US Pat. No. 9,051,155

ELEVATOR RESCUE SYSTEM INCLUDING COMMUNICATIONS OVER A RESCUE OPERATION SIGNAL TRANSMISSION PATH

Otis Elevator Company, F...

1. Elevator rescue system for moving an elevator car to a disembarkation position in a rescue operation, the elevator rescue
system comprising:
a rescue device coupled to a brake system of an elevator, the rescue device comprising a rescue power source, wherein the
rescue device is disposed near the brake system of the elevator;

an operation panel comprising a manual rescue operation switch, the operation panel being disposed remotely from the rescue
device; and

a rescue operation signal transmission path between the rescue device and the operation panel, the rescue operation signal
transmission path being part of an elevator control communication network, which comprises a plurality of nodes.

US Pat. No. 9,422,135

ELEVATOR DRIVE POWER SUPPLY CONTROL

Otis Elevator Company, F...

1. An elevator control system, comprising:
an elevator drive;
a safety chain configured to monitor at least one condition of a selected elevator system component;
a first switch that is operable to interrupt power supply to the elevator drive, the first switch being controlled by the
safety chain depending on the monitored condition;

a second switch in series with the first switch, the second switch being operable to interrupt power supply to the elevator
drive, the second switch being controlled by the safety chain depending on the monitored condition; and

a monitoring device configured to
determine when the first and second switches should be in a power supplying condition for supplying power to the elevator
drive,

determine that the first switch is in the power supplying condition before allowing the safety chain to control the second
switch for supplying power to the elevator drive,

determine whether the second switch is in a power supplying condition when the first switch is in the power supplying condition,
and

prevent the elevator drive from being powered responsive to determining that either the first switch or the second switch
is not in a desired condition.

US Pat. No. 9,156,653

CONTROLLING ACCESS TO FLOORS WITHIN A BUILDING VIA ELEVATORS

OTIS ELEVATOR COMPANY, F...

1. A method of controlling access to floors within a building via elevators, the method comprising:
receiving a passenger input at a floor of the passenger input indicating a desired destination floor a passenger seeks to
travel to in an elevator;

accessing a stored database containing data about which floors passengers are allowed to access via elevator when coming from
the floor of the passenger input;

determining if access is allowed based upon the floor of the passenger input, the desired destination floor and the data;
and

controlling operation of the elevator to deliver the passenger to the desired destination floor if access is allowed;
wherein the data includes one of open access, no access and authorization required for access for each combination of floor
of the passenger input and desired destination floor.

US Pat. No. 9,321,610

FRICTIONAL DAMPER FOR REDUCING ELEVATOR CAR MOVEMENT

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
an elevator car;
a plurality of ropes suspending the elevator car;
at least one guide rail situated to guide vertical movement of the elevator car; and
a damping device supported on the elevator car, the damping device including
at least one friction member that is selectively moveable into a damping position in which the friction member engages the
guide rail to damp movement of the elevator car and

a solenoid actuator having an armature that is situated for vertical movement, the armature moving upward when the solenoid
is energized to move the friction member into the damping position, a mass of the armature urging the armature in a downward
vertical direction causing the friction member to move out of the damping position when the solenoid is not energized.

US Pat. No. 9,272,880

ELEVATOR SYSTEM INCLUDING CONTROL ELECTRONICS SUPPORTED ON AN ELEVATOR MACHINE SUPPORT

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car;
a machine including a motor, a brake, and a traction sheave;
a roping, arrangement suspending the elevator car, the roping an arrangement at least partially winding about the traction
sheave;

a machine support that is configured to support a load associated with an elevator machine, at least a portion of the machine
support extending generally horizontally at least partially across a hoistway; and

a support for control electronics that operate the elevator machine, wherein the support for control electronics is situated
at least partially outside the hoistway, wherein the support for control electronics includes a housing and vertically oriented
rigid members on opposite sides of the housing, and wherein the support for control electronics is connected to the machine
support with the vertically oriented rigid members beneath the machine support such that the vertically oriented rigid members
support at least a portion of the load of the machine support wherein the support has one end supported on a horizontal surface
of a floor near the hoistway.

US Pat. No. 9,487,378

MACHINE ROOMLESS ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. A machine-roomless elevator comprising:
a car within a hoistway;
a counterweight within a space between said car and a wall of said hoistway, and on which a plurality of counterweight suspension
wheels is arranged;

a traction sheave; and
a plurality of hoist ropes that is arranged to round the traction sheave,
wherein the hoist ropes are divided into a plurality of groups corresponding to a number of said counterweight suspension
wheels after corresponding portions of the hoist ropes round said traction sheave, each group rounding a corresponding one
of the counterweight suspension wheels with a first one of the groups rounding a first one of the counterweight suspension
wheels without rounding a second one of the counterweight suspension wheels and a second one of the groups rounding the second
one of the counterweight suspension wheels without rounding the first one of the counterweight suspension wheels each group
being fixed on a counterweight-side termination after rounding the corresponding one of said counterweight suspension wheels.

US Pat. No. 9,296,591

DETERMINING ELEVATOR CAR POSITION USING BI-STABLE SENSORS

OTIS ELEVATOR COMPANY, F...

1. A system for monitoring elevator car travel, the system comprising:
a plurality of bi-stable sensors traveling with an elevator car;
a plurality of sense elements positioned along a path of the sensors;
the sense elements causing the sensors to assume one of a first state and a second state;
wherein states of the sensors define a zone code identifying a zone corresponding to the elevator car position, the zone code
being a gray code, the zone code used to control a stopping device associated with the elevator car;

wherein the sense elements include a first sense element having a first characteristic and a second sense element having a
second characteristic different from the first characteristic;

wherein a first sense element causes a first bi-stable sensor to assume a first state when the car is traveling in a first
direction, the first sense element causing the first bi-stable sensor to assume a second state when the elevator car is traveling
in a second direction, the second direction opposite the first direction.

US Pat. No. 9,302,885

BEST GROUP SELECTION IN ELEVATOR DISPATCHING SYSTEM INCORPORATING GROUP SCORE INFORMATION

OTIS ELEVATOR COMPANY, F...

1. An elevator dispatching system, comprising:
a plurality of elevator groups, each of the plurality of elevator groups comprising a respective group controller and a respective
plurality of elevator cars, each of the plurality of elevator groups serving a respective set of floors; and

a redirector that is in communication with the respective group controller of each of the plurality of elevator groups, the
redirector configured to:

receive a service request comprising a destination floor;
determine whether more than one elevator group of the plurality of elevator groups serves the destination floor; and
based on determining that more than one elevator group of the plurality of elevator groups serves the destination floor:
communicate the service request to the respective group controller of each of the more than one elevator groups;
receive, from the respective group controller of each of the more than one elevator groups, a respective group score that
was calculated based on the service request;

determine a best group of the one or more elevator groups for the service request based on the received respective group scores;
and

assign the service request to the determined best group, wherein the respective group controller of the best group determines
a best car for the service request from the respective plurality of elevator cars of the determined best group.

US Pat. No. 9,193,565

ROLLER GUIDE WITH SPEED DEPENDENT STIFFNESS

Otis Elevator Company, F...

1. A guide device for use in an elevator system, comprising:
an elevator guide roller having a hardness that varies depending on a speed of rotation of the roller, and wherein a variation
in the speed of rotation of the roller directly causes the hardness of the roller to vary.

US Pat. No. 9,126,807

ELEVATOR DISPATCH CONTROL TO AVOID PASSENGER CONFUSION

Otis Elevator Company, F...

1. A method of controlling an elevator system, comprising the steps of:
determining a direction of travel from a source floor of a new call from a passenger desiring elevator service;
simulating a path of a considered elevator car if the new call were assigned to the considered elevator car by determining
at least one of the following relationships:

(i) a relationship between a position of the considered elevator car and the source floor or
(ii) a relationship between a direction of movement of the considered elevator car and the direction of travel; and
assigning the new call to one of a plurality of elevator cars if the assigning will satisfy each of
(i) the one of the elevator cars will not move in a direction opposite the direction of travel during a time between the passenger
boarding the one of the elevator cars and arriving at a destination of the passenger, and

(ii) the one of the elevator cars will not move in a direction opposite a travel direction of any currently assigned passenger
during a time between the currently assigned passenger boarding the one of the elevator cars and arriving at a destination
of the currently assigned passenger.

US Pat. No. 9,550,653

ELEVATOR TENSION MEMBER

OTIS ELEVATOR COMPANY, F...

1. A tension member for an elevator system, the tension member longitudinally extending along a longitudinal axis and comprising:
a plurality of fibers formed into one or more primary strands or cords extending parallel to the longitudinal axis;
a plurality of fibers formed into one or more secondary strands or cords extending along the longitudinal axis and through
less than a full length of the tension member; and

a jacket at least substantially retaining the one or more primary and one or more secondary strands or cords, the one or more
secondary strands or cords having a tensile modulus greater than a tensile modulus of the jacket and less than a tensile modulus
of the one or more primary strands or cords, the jacket having a jacket width and jacket thickness, the jacket width greater
than the jacket thickness;

wherein each and every of the one or more primary strands or cords is positioned within a primary tension zone and each and
every of the one or more secondary tension strands or cords is positioned outside of the primary tension zone;

wherein the primary tension zone is defined by two imaginary planes parallel and equidistant to a center axis of the tension
member, the two imaginary planes being parallel to a surface of the jacket corresponding to the jacket width.

US Pat. No. 9,481,547

ELEVATOR SYSTEM WITH DYNAMIC TRAFFIC PROFILE SOLUTIONS

Otis Elevator Company, F...

1. A method of controlling an elevator system that includes a plurality of elevator cars within a building, comprising the
steps of:
determining that a temporary heavy traffic condition exists that includes a plurality of passengers requiring elevator service
from an originating floor in the building that is distinct from a lobby floor;

temporarily dedicating a plurality of elevator cars to carry the passengers from the originating floor; and
temporarily using a peak travel scheduling strategy for controlling the plurality of elevator cars for a selected period of
time including

using a first scheduling strategy for controlling a first one of the elevator cars; and
using a second, different scheduling strategy for controlling a second one of the elevator cars.

US Pat. No. 9,272,882

DETECTION OF PEOPLE RELATIVE TO A PASSENGER CONVEYOR WITH A CAPACITIVE SENSOR

OTIS ELEVATOR COMPANY, F...

1. A system for detecting a person relative to a passenger conveyer having a structural component and a passenger riding area,
the system comprising:
a driving circuit for supplying an oscillating drive signal;
a capacitive sensor having a first electrode configured to produce an electric field toward a second electrode in response
to the oscillating drive signal;

a detection circuit connected to the capacitive sensor that senses a change in capacitance of the capacitive sensor and produces
an output as a function of capacitance; and

a controller responsive to the detection circuit output to selectively adjust an operation mode of the passenger conveyor;
wherein the first and second electrodes are disposed on portions of the passenger conveyor structural component on opposite
sides of the passenger riding area, and wherein a change in capacitance is caused by the presence of a person in the electric
field between the first and second electrodes;

the driving circuit further comprising:
an oscillator for creating an oscillating drive signal;
an amplifier connected to the oscillator to amplify the oscillating drive signal;
an impedance matching network connected between the amplifier and the capacitive sensor; and
a mode selector operable to drive the capacitive sensor in a selected mode.

US Pat. No. 9,158,289

SAFETY CIRCUIT

Otis Elevator Company, F...

1. A safety circuit, comprising:
a plurality of contacts that are configured to establish a conductive path across the contacts when the contacts are in electrically
conductive contact with each other and to selectively interrupt a conductive path across the contacts when the contacts are
separated; and

a controller that selectively introduces a voltage pulse across the contacts at a voltage level that is effective to overcome
an electrical resistance of any contamination on at least one of the contacts, the controller introducing the voltage pulse
at least when the contacts are expected to be in contact to establish the conductive path.

US Pat. No. 9,126,806

ELEVATOR SYSTEM WITH DISTRIBUTED DISPATCHING

Otis Elevator Company, F...

1. An elevator input device, comprising:
an input device passenger interface configured to allow a passenger to place a call to indicate a desired elevator service;
and

an input device controller configured to
(i) interpret any passenger input regarding the call,
(ii) identify which of a plurality of elevator cars would be able to provide the desired elevator service according to a predetermined
criterion, wherein the plurality of elevator cars considered includes every elevator car that is capable of serving the call,
and

(iii) assign the call to the identified elevator car.

US Pat. No. 9,056,750

ESCALATOR HANDRAIL CHAIN

OTIS ELEVATOR COMPANY, F...

1. A handrail assembly for an escalator system comprising:
a handrail movable along a length of the escalator;
a handrail guide assembly defining a travel path for the handrail including:
a handrail guide;
a plurality of sliding bearing supports interconnected to form a handrail chain and secured to the handrail guide;
one or more sliding bearings extending at least partially through each sliding bearing support of the handrail chain;
a shaft extending through each sliding bearing support and in sliding contact with the one or more sliding bearings;
a plurality of rollers secured to at least one end of the shaft and in rolling contact with the handrail; and
a boss extending laterally from the sliding bearing support and disposed longitudinally entirely between a first roller of
the plurality of rollers and a second roller of the plurality of rollers relative to a length of the handrail assembly, the
first roller and second roller having no additional rollers disposed longitudinally therebetween, the boss extending beyond
a lateral extent of the rollers.

US Pat. No. 9,051,651

ELEVATOR LOAD BEARING MEMBER HAVING A CONVERSION COATING ON TENSION MEMBER

Otis Elevator Company, F...

23. A load bearing member for use in an elevator system comprising:
at least one elongated steel tension member;
a conversion coating on the elongated steel tension member, the conversion coating including at least one of chromium phosphate,
black iron oxide, or nickel phosphate; and

a zinc coating between the at least one elongated steel tension member and the conversion coating.

US Pat. No. 9,457,987

STOP SEQUENCING FOR BRAKING DEVICE

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a car;
a first brake having a first magnetic brake coil, the first brake movable between a disengaged and an engaged position; and
a brake control device having a brake power source, the brake control device electrically connected to the first brake and
configured to selectively delay the movement of the first brake to the engaged position with a first residual current from
the first magnetic brake coil;

wherein the delay of the movement of the first brake to the engaged position is controlled by recirculating the first residual
current through the first magnetic brake coil.

US Pat. No. 9,321,612

ELEVATOR SYSTEM INCLUDING A 4:1 ROPING ARRANGEMENT

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
an elevator car;
at least one guiderail that guides movement of the elevator car, the guiderail having a length in a direction of movement
of the elevator car and a depth generally perpendicular to the length;

a plurality of flat belts situated relative to the elevator car such that movement of the flat belts for causing movement
of the elevator car is approximately four times a corresponding movement of the elevator car; and

a first plurality of sheaves that the flat belts at least partially wrap around, the first plurality of sheaves remaining
fixed near one end of the guiderail, the first plurality of sheaves rotating about coaxially aligned axes and having a collective
width along the axes that is no greater than the depth of the guiderail.

US Pat. No. 9,296,588

BEST GROUP SELECTION IN ELEVATOR DISPATCHING SYSTEM INCORPORATING REDIRECTOR INFORMATION

OTIS ELEVATOR COMPANY, F...

1. An elevator dispatching system, comprising:
a plurality of elevator groups, each of the plurality of elevator groups comprising a group controller and a plurality of
elevator cars, each of the plurality of elevator groups serving a respective set of floors; and

a redirector configured to receive a service request comprising a destination floor, and, in the event more than one elevator
group serves the destination floor, determine a best group to service the request from the plurality of elevator groups based
on information stored in the redirector, wherein the group controller of the determined best group is configured to determine
a best car from the plurality of elevator cars in the determined best group, wherein the information stored in the redirector
comprises a timer, such that the redirector is configured to alternate an elevator group chosen as the best group in the event
the timer expires.

US Pat. No. 9,150,385

SYSTEM FOR PROVIDING DC POWER TO ELEVATOR CAR

OTIS ELEVATOR COMPANY, F...

1. An elevator door controller system for operating car doors of an elevator car, the system comprising:
a DC power supply unit for supplying DC power;
a travelling cable for delivering DC power to the car, the travelling cable connected between the DC power supply unit and
the car;

a power storage device located on the car for storing DC power from the travelling cable;
a DC motor for operating the car doors; and
an elevator door drive powered by the power storage device for driving the DC motor to operate the car doors.

US Pat. No. 9,126,810

AUXILIARY BRAKES FOR PASSENGER CONVEYORS

Otis Elevator Company, F...

24. A method for modifying a passenger conveyor with an auxiliary braking system, the passenger conveyor having a truss with
a first end and a second end, the first end rotatably supporting a first turnaround, the second end rotatably supporting a
second turnaround with an endless loop extending around the first and second turnarounds, the passenger conveyor also including
a controller, the method comprising:
coupling a brake bar to the truss with a biasing member that biases the brake bar towards the loop, the brake bar having a
braking surface,

coupling a friction bar to an actuator, the friction bar including a first side that engages the loop when placed onto the
loop, the friction bar also including a second side, the actuator spacing the friction bar from the loop when in an inactive
state,

linking the actuator to the controller,
programming the controller to send a signal to the actuator to activate the actuator and place the first side of the friction
bar onto a first section of the loop as the first section of the loop passes beneath the brake bar thereby causing the top
of the friction bar to frictionally engage the braking surface of the brake bar and brake movement of the loop.

US Pat. No. 9,382,098

ELEVATOR DEVICE AND ROLLER GUIDE ASSEMBLY

Nippon Otis Elevator Comp...

1. An elevator device comprising:
an elevator car going up or down along a hoistway;
a guide rail which is disposed along the hoistway, and arranged to guide the elevator car to go up or down;
the elevator car including a roller guide assembly which is guided by the guide rail,
the roller guide assembly including a plurality of horizontal fixing shafts disposed adjacent to the guide rail, and rollers
which are rotatably supported by the respective horizontal fixing shafts, and which are arranged to be rolled on the guide
rail,

each of the rollers including a roller outer circumference portion made from elastic material, and abutted on the guide rail,
a bearing provided on an inner circumference side of the roller outer circumference portion, and an elastic member which has
an annular shape, which is disposed between the bearing and the horizontal fixing shaft, and which has a hardness relatively
smaller than a hardness of the elastic material,

a stopper section which includes a pair of stoppers which are located on both sides of the roller in an axial direction and
are arranged to restrict a maximum displacement of the elastic member in a radial direction, to a predetermined amount,

wherein the stopper section further comprises a protruding portion which is located radially outside the elastic member in
the radial direction, and radially inside the roller outer circumference portion in the radial direction, and which protrudes
in the axial direction, and the pair of stoppers are supported around the horizontal fixing shaft which is a center; the stopper
section includes a stopper portion which is located on an outer circumference portion of at least one stopper of the pair
of stoppers that faces the roller, and which is arranged to restrict a movement of the protruding portion outwardly in the
radial direction.

US Pat. No. 9,365,395

ELEVATOR LOAD BEARING MEMBER

Otis Elevator Company, F...

1. An elevator load bearing member, comprising:
a plurality of tension members for bearing weight associated with an elevator car, said plurality of tension members extending
along a length;

an outer cover at least partially covering said plurality of tension members;
said outer cover having a first surface and a second surface, said plurality of tension members being situated between said
first surface and said second surface, said first surface being configured for traction engagement on a sheave;

wherein said first surface and said second surface define a cross-section transverse to said length, said cross-section having
a first end portion, a middle portion, and a second end portion;

wherein said middle portion has a first width between said first surface and said second surface, wherein said first width
is smaller than a second width between said first surface and said second surface, said second width being at one of said
first end portion and said second end portion; and

wherein each of said first end portion, said middle portion and said second end portion includes at least one of said tension
members, at least one of said tension members in said middle portion is spaced closer to said first surface than at least
one of said tension members in one of said first end portion and said second end portion.

US Pat. No. 9,352,935

TENSION MEMBER FOR AN ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. A traction drive for an elevator system, the elevator system including a car and a counterweight, the traction drive including
a traction sheave driven by a machine and a tension member interconnecting the car and counterweight, the tension member supporting
a load of the car and a load of the counterweight, the tension member having a width w, a thickness t measured in the bending
direction, said tension member having a plurality of cords therein including wires, each wire being less than 0.25 mm in diameter,
said cords being spaced apart in a direction along the width and having a coating material between adjacent cords, said tension
member further having an engagement surface defined by the width of the tension member, wherein the tension member has an
aspect ratio, defined as the ratio of width w to thickness t, of greater than one, the traction sheave including a traction
surface configured to receive the engagement surface of the tension member such that traction between the traction sheave
and the engagement surface of the tension member causes movement of the tension member that moves the car and counterweight,
wherein the traction sheave includes a pair of retaining rims on opposite sides of the traction sheave,
wherein the are of wires arranged in a plurality of strands, each strand having several wires twisted around a center wire,
wherein said strands are arranged in a twisted pattern with several strands twisted around a center strand, and
wherein said center wire of said center strand in each individual cord is larger than all other wires in each individual cord
while having a diameter of less than 0.25 mm.

US Pat. No. 9,254,985

ELEVATOR SYSTEM BELT HAVING CONNECTING DEVICES ATTACHED THERETO

OTIS ELEVATOR COMPANY, F...

1. An assembly comprising:
(a) a belt, which includes cords extending lengthwise of the belt with spaces therebetween, and includes a coating of the
cords extending into spaces between the cords, said belt being configured for use in an elevator system as a suspension belt
for a car and a counterweight, or being configured for use in the elevator system as a drive belt for the car or for the counterweight,
or being configured for use in the elevator system as a combined suspension and drive belt for the car and the counterweight;

(b) a first connecting device including a first number of cord contacting elements providing electrical connections contacting
element-to-cord; and

(c) a second connecting device, including a second number of cord contacting elements providing electrical connections contacting
element-to-cord, and including at least two conductive elements, each conductive element being electrically connected to a
respective one of the second cord contacting elements, the conductive elements being provided for making electrical connections
to a belt monitoring unit which monitors the proper condition of the cords on the basis of electrical signals passed through
the cords;

(d) wherein at least one of the first and second connecting devices includes at least one bridge type cord contacting element,
which extends into a gap between two cords of the cords and provides physical and electrical connection to both of the two
cords, thereby electrically connecting the two cords.

US Pat. No. 9,128,155

SWITCH DETECTION SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A switch detection system comprising:
a first switch having a pole node, a normally closed contact, and a normally open contact, the pole node of the first switch
connected to a voltage source node;

a second switch having a pole node, a normally closed contact and a normally open contact, the pole node of the second switch
connected to the normally closed contact of the first switch;

a voltage detector connected to the normally closed contact of the second switch;
a first resistor connected to the normally open contact of the first switch;
a second resistor connected to the normally open contact of the first switch and the normally open contact of the second switch;
and

a processor having a first connection connected to the pole node of the first switch and a second connection connected to
the first resistor;
wherein the processor is configured to:
determine a voltage across the first connection of the processor and the second connection of the processor;
determine a voltage drop across the connections of the processor; and
calculate a number of resistors in series between the first connection of the processor and the second connection of the processor.

US Pat. No. 9,321,611

ELEVATOR BRAKE HAVING A BRAKE RELEASE FEATURE

OTIS ELEVATOR COMPANY, F...

1. An elevator braking device, comprising:
a first brake member for applying a braking force to a first side of an element;
a second brake member that is moveable relative to the first brake member for applying a braking force to a second side of
the element;

a brake release member adjacent the first brake member to be received against the first side of the element between the first
brake member and the first side of the element, the brake release member being moveable relative to the first brake member
for selectively releasing the elevator braking device from engagement with the element; and

at least one guide pin, wherein
said brake release member is selectively movable relative to said first brake member on the at least one guide pin;
said first brake member includes a first arm and a second arm;
the brake release member is received between said first arm and said second arm;
a top of the brake release member being beneath an upper one of said first arm and said second arm;
a bottom of the brake release being above a lower one of said first arm and said second arm;
one of said first arm and said second arm limits movement of said brake release member in a first direction beyond a selected
position that corresponds to a position of the brake release member when the braking force is applied to the first side of
the element; and

the other of said first arm and said second arm limits movement of said brake release member in a second, opposite direction.

US Pat. No. 9,434,578

SHEAVE ASSEMBLY AND SUSPENSION SYSTEM FOR AN MRL ELEVATOR

Otis Elevator Company, F...

1. A machine room-less elevator system comprising;
at least one rail;
a car that is selectively movable along the rail;
a machine mounted to a surface on top of the at least one rail, the top surface being disposed above an uppermost portion
of the car with the car at the an uppermost position on the at least one rail;

a sheave assembly supported on the car, the sheave assembly having at least two profiled belt engaging sheave portions rotatable
about a common axis, with a spacing between the at least two profiled belt engaging sheave portions, wherein the at least
two profiled belt engaging sheave portions each include a first radial dimension and the spacing between the two profiled
belt engaging sheave portions includes a second radial dimension smaller than the first radial dimension with the rail extending
into the space between the at least two profiled belt engaging sheave portions past the first radial dimension toward the
second radial dimension; and

a shaft supporting each of the at least two profiled belt engaging sheave portions for rotation about the common axis.

US Pat. No. 9,423,369

RESISTANCE-BASED MONITORING SYSTEM AND METHOD

OTIS ELEVATOR COMPANY, F...

1. A monitoring system for a tensile support structure, comprising:
a voltage input node to supply a voltage, the voltage applied to the tensile support structure;
a resistance circuit connected to an effective resistance of the tensile support structure, the resistance circuit having
a first set of resistors and a second set of resistors, the second set of resistors being coupled to the voltage input and
configured to provide a reference voltage;

the first set of resistors including at least two resistors in series and coupled to the voltage input, the at least two resistors
in series being in parallel with the effective resistance of the tensile support structure; and

an interface circuit directly coupled to the resistance circuit and having two or more comparators, each comparator being
configured to directly compare a voltage across at least one of the at least two resistors with the reference voltage and
generate an output signal corresponding to the comparison, the interface circuit being configured to monitor the effective
resistance of the tensile support structure based on the output signals.

US Pat. No. 9,359,173

ELEVATOR GOVERNOR HAVING TWO TRIPPING MECHANISMS ON SEPARATE SHEAVES

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car;
a first governor sheave supported on the elevator car for movement with the elevator car and for rotational movement relative
to the elevator car responsive to movement of the elevator car;

a first governor tripping mechanism supported on the first governor sheave that provides an indication to perform a first
governor function to control movement of the elevator car responsive to the elevator car moving at a speed above a first threshold
speed;

a second governor sheave supported on the elevator car for movement with the elevator and for rotational movement relative
to the elevator car responsive to movement of the elevator car;

a second governor tripping mechanism supported on the second governor sheave that provides an indication to perform a second
governor function to control movement of the elevator car responsive to the elevator car moving at a speed above a second
threshold speed.

US Pat. No. 9,362,037

MAGNETIC DEVICE FOR CONTROLLING DOOR MOVEMENT AND METHOD THEREOF

Otis Elevator Company, F...

1. A locking or coupling device, comprising:
a first set and a second set of:
(1) a plurality of magnets, each magnet of the plurality of magnets of each set having a direction of magnetization;
(2) a plurality of pole shoe members, for each set, each pole shoe member of the plurality of pole shoe members is located
adjacently between selected ones of the magnets in an alternating fashion,

wherein the first set and second set are positioned adjacent each other; and
a moveable support supporting the first set of the plurality of magnets and plurality of pole shoe members, the moveable support
being moveable relative to the second set of the plurality magnets and plurality of pole shoe members to selectively change
a relative orientation of the directions of magnetization between;

(i) a first relative orientation wherein a flow of magnetic flux is primarily directed between the magnets through the pole
shoe members and the magnetic flux remains essentially in a plane containing the magnets and the pole shoe members, so as
to generally not provide magnetic coupling of objects outside the plane, and

(ii) a second, different relative orientation wherein the flow of magnetic flux is primarily directed from the pole shoe members
in a transverse direction away from the plane, thereby providing magnetic coupling of objects outside the plane.

US Pat. No. 9,290,359

TIMER-BASED CONTROL OF FIXTURE CHANNELS

OTIS ELEVATOR COMPANY, F...

1. A method for controlling a fixture, the method comprising:
receiving a message from a controller;
determining whether the message includes an address associated with the fixture;
when the message includes an address associated with the fixture, then processing the message to determine a channel state
change, updating a fixture channel in response to the channel state change, associating control of the updated fixture channel
with a controller address in the message and resetting timers associated with the updated fixture channel;

when the message does not include an address associated with the fixture and the message does not include an instruction to
change a state of a fixture channel, then retrieving a controller address from the message and resetting timers associated
with any channels in the fixture that are controlled by a controller associated with the controller address.

US Pat. No. 9,371,210

ELEVATOR SAFETY SYSTEM HAVING MULTIPLE BUSES

OTIS ELEVATOR COMPANY, F...

1. An elevator safety system comprising:
a controller located at a single location;
a hoistway safety node arranged at a pit portion of an elevator hoistway, the hoistway node being operatively connected to
one of a pit safety device and a lower hoistway device arranged at the elevator pit;

a first bus linking the hoistway node and the controller, the first bus passing communication signals from the hoistway node
to the controller;

a car node arranged in an elevator car, the car node being operatively connected to a car safety device arranged at the elevator
car; and

a second bus linking the car node and the controller, the second bus passing communication signals from the car node to the
controller.

US Pat. No. 9,371,212

ELEVATOR SYSTEM INCLUDING A 4:1 ROPING ARRANGEMENT

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car;
a plurality of belts situated relative to the elevator car such that movement of the belts for causing movement of the elevator
car is approximately four times a corresponding movement of the elevator car;

a first sheave, a second sheave, a third sheave and a fourth sheave all supported for vertical movement with the elevator
car and rotational movement relative to the elevator car; and

wherein each belt has a portion extending across the elevator car between the first and second sheaves that is vertically
aligned with another portion of the same belt extending across the elevator car between the third and fourth sheaves.

US Pat. No. 9,359,178

DETECTOR FOR ELECTROMAGNETIC BRAKE

OTIS ELEVATOR COMPANY, F...

1. A detector for an electromagnetic brake, while a brake force is generated by pressing a brake piece on a member for braking
with the recovery force based on elastic deformation of a brake spring, said brake piece is driven away from the member for
braking against the recovery force of said brake spring by means of an electromagnetic attracting force caused by excitation
of a solenoid so that the brake force is released; the detector comprising:
a load sensor that detects the recovery force of said brake spring;
a judgment means that determines a condition of the electromagnetic brake based on the output of said load sensor;
wherein said judgment means determines whether the brake force of the electromagnetic brake is lower than a prescribed normal
judgment lower limit or higher than a prescribed normal judgment upper limit based on the output of said load sensor, and,
if the brake force of the electromagnetic brake is found to be lower than a prescribed normal judgment lower limit or higher
than a prescribed normal judgment upper limit, a detection signal is output to a monitoring center; and wherein said detection
signal is either:

a first detection signal sent to a monitoring center that the brake force of said electromagnetic brake is lower than said
normal judgment lower limit and is higher than an operation stop value preset to be lower than said normal judgment lower
limit, or if the brake force of said electromagnetic brake is higher than said acceptable upper limit, while operation of
the elevator is continued, or

a second detection signal sent to the monitoring center that the brake force of the electromagnetic brake is even lower than
said operation stop preset value, said second detection signal indicating the state is output as said detection signal to
the monitoring center, while operation of the elevator is turned off.

US Pat. No. 9,227,817

TOE GUARD ASSEMBLY FOR AN ELEVATOR SYSTEM

Otis Elevator Company, F...

1. An elevator system, comprising:
a hoistway;
an elevator car that is moveable within the hoistway;
a first toe guard panel supported near a bottom of the elevator car;
a second toe guard panel that is slidable relative to the first panel in a first direction between an extended position and
a retracted position, the first toe guard panel moving in a second, different direction from an extended position toward a
folded position responsive to the second panel moving toward the retracted position;

a folding mechanism that facilitates the first panel moving between the extended position and the folded position; and
an instigator supported on the second panel, the instigator instigating folding the folding mechanism, wherein the instigator
comprises a contact surface that moves from a non-contact position into a contact position where the contact surface contacts
a portion of the folding mechanism as the second panel moves relative to the first panel, the contact resulting in the portion
of the folding mechanism urging the first panel toward the folded position.

US Pat. No. 9,067,762

ENERGY SAVINGS WITH OPTIMIZED MOTION PROFILES

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a car;
a hoist motor for elevating and lowering the car;
a brake for limiting car movement;
an input device for selecting a destination for a run; and
a controller for receiving a command from the input device and for controlling operation of the hoist motor and the brake,
wherein the controller has a loss reduction mode wherein the controller selects a velocity profile for the run that varies
according to car load, run direction, and run distance to reduce a combined set of energy losses for the run;

wherein the combined set of energy losses is substantially minimized within a set of constraints in the loss reduction mode;
wherein the set of constraints includes limits on velocity, acceleration, jerk, and time for the run.

US Pat. No. 9,428,365

TOE GUARD ASSEMBLY FOR AN ELEVATOR SYSTEM

Otis Elevator Company, F...

1. An elevator assembly, comprising:
a hoistway having a bottom surface;
an elevator car configured to move in the hoistway having a frame member;
at least one toe guard panel that is moveable between a first position and a second position, in the first position the toe
guard panel is situated to provide a vertical surface beneath the elevator car and the toe guard panel has an end at a bottom
of the toe guard panel, the end being spaced a first distance from the elevator car, in the second position the toe guard
panel is situated with a second, shorter distance between the end and the elevator car;

a moving mechanism coupled with the toe guard panel for selectively moving the toe guard panel from the first position into
the second position; and

an instigator member situated in a selected vertical position above the hoistway bottom surface and above the end of the toe
guard panel to interact with the moving mechanism to begin movement of the toe guard panel from the first position when the
frame member of the elevator car is approximately at the selected vertical position;

wherein the moving mechanism comprises a cable that pulls the toe guard panel toward the second position responsive to interaction
with the instigator member; and

wherein the moving mechanism comprises a hook near one end of the cable and the instigator member comprises a catch member
that catches the hook as the elevator car frame member descends toward the selected vertical position, the hook remaining
on the catch member as the elevator car frame member descends beneath the selected vertical position such that the cable continues
to pull the toe guard panel away from the first position as the elevator car frame member descends beneath the selected vertical
position.

US Pat. No. 9,422,133

ELEVATOR CAR CONTROL IN A LANDING ZONE USING A MACHINE BRAKE IN RESPONSE TO UNDESIRED CAR MOVEMENT

Otis Elevator Company, F...

1. A method of controlling movement of an elevator car in an elevator system that includes a machine for moving the elevator
car and a machine brake for preventing movement of the elevator car, the method comprising the steps of:
determining whether the elevator car is near a landing;
determining whether a door of the elevator car is open;
performing a desired operation that includes desired movement of the elevator car while the elevator car is near the landing
and the door is open;

determining whether the elevator car moves other than according to the desired movement; and
stopping movement of the elevator car by applying the machine brake responsive to elevator car movement other than the desired
movement while the elevator car is near the landing and the door is open,

wherein the desired operation comprises departing from the landing before the door has closed.

US Pat. No. 9,394,138

METHOD AND SYSTEM FOR DAMPENING NOISE OR VIBRATION USING A MOTOR

OTIS ELEVATOR COMPANY, F...

1. A system for active control of noise and/or vibration, comprising:
an electric machine having a motor and traction sheave;
at least one sensor for sensing at least one of noise and vibration in the machine and generating at least one of a noise
signal representing noise and a vibration signal representing vibration;

a controller obtaining at least one of the noise signal and the vibration signal, the controller generating control signals
to reduce at least one of noise and vibration in the machine; and

power electronics receiving the control signals and generating drive signals for the machine, the drive signals driving the
motor as an actuator to generate corrective forces to dampen at least one of noise and vibration in the machine.

US Pat. No. 9,371,873

PERMANENT MAGNET CENTERING SYSTEM FOR BRAKE

OTIS ELEVATOR COMPANY, F...

1. A brake assembly, comprising:
a rotating element;
a fixed element mounted in operational association with the rotating element; and
a positioning device connected to the fixed element and magnetically interfacing with the rotating element to facilitate centering
of the fixed element relative to the rotating element;

wherein the positioning device includes a first interfacing surface having a first plurality of teeth with a first plurality
of tips and the rotating element includes a second interfacing surface having a second plurality of teeth with a second plurality
of tips, the first interfacing surface and the second interfacing surface interfacing with one another to magnetically interface
the positioning device with the rotating element.

US Pat. No. 9,359,172

ELEVATOR ROPE SWAY DETECTION AND DAMPING

Otis Elevator Company, F...

1. An elevator system, comprising:
a first mass that is moveable within a hoistway;
a second mass that is moveable within the hoistway;
a plurality of elongated members coupling the first mass to the second mass;
at least one damper that selectively contacts at least one of the elongated members responsive to lateral movement of the
at least one of the elongated members;

a sensor that detects contact between the damper and the at least one of the elongated members, wherein the sensor provides
an indication of at least one feature of the detected contact between the damper and the at least one of the elongated members,
the indication of at least one feature comprising at least one of:

(i) an indication of a force incident on the damper resulting from contact with the at least one of the elongated members,
(ii) an indication of noise associated with contact between the damper and the at least one of the elongated members.
(iii) a length of time during which the contact is detected, and
(iv) a number of times that the detected contact occurs; and
a controller that controls at least one aspect of elevator system operation responsive to the detected contact, wherein the
controller selects the at least one aspect of elevator system operation for adjustment based upon the magnitude of the indication
from the sensor, the at least one aspect including at least one of

limiting a length of an elevator run,
moving the elevator car to a designated location within the hoistway that is considered an advantageous location during sway
conditions, and

causing the elevator car proceed to a selected position and causing the elevator car doors to open.

US Pat. No. 9,296,589

ELEVATOR REGENERATIVE DRIVE CONTROL REFERENCED TO DC BUS

Otis Elevator Company, F...

1. A regenerative elevator drive device, comprising:
a DC bus;
a power section having a plurality of power components electrically referenced to the DC bus; and
a control section having a plurality of control components including a drive controller and controller inputs electrically
referenced to the DC bus,

wherein at least one of the controller inputs is coupled to a current sensing resistor in the power section so that the controller
can determine a current of a corresponding component of the power section.

US Pat. No. 9,233,798

SEAL ASSEMBLY FOR A BEARING ASSEMBLY

OTIS ELEVATOR COMPANY, F...

10. A seal assembly comprising:
a rotating member configured and disposed to be mounted for rotation with a roller member; and
a stationary member configured and disposed to be fixedly mounted relative to an axel member, the rotating member and the
stationary member forming an annular cavity, the rotating member and stationary member cooperating to establishing a pressure
gradient at the annular cavity that substantially prevent foreign objects from contacting one of an associated bearing member
and the axle member.

US Pat. No. 9,227,818

PASSENGER CONVEYOR WITH MOVABLE LATERAL PANEL MEMBERS

Otis Elevator Company, F...

1. A passenger conveyor, comprising
a tread band comprising a plurality of treads,
at least one drive member,
the drive member being driven around a first and a second turnaround section by a drive,
the drive member being connected with the treads, and
a plurality of panel members located on each lateral side of the treads such as to be movable with respect to the treads,
the panel members being supported such as to respectively remain stationary with respect to at least one portion of the drive
member, the panel members on each lateral side have the same configuration,

wherein the treads are respectively associated with at least one of the panel members.

US Pat. No. 9,108,824

REMOTE ACCESS OF AN ELEVATOR CONTROL SYSTEM WITH MULTIPLE SUBSYSTEMS

OTIS ELEVATOR COMPANY, F...

1. A method for providing remote access to multiple subsystems (102) of an elevator control system (104) comprising:
receiving a request to establish a remote connection at an elevator control subsystem (112) from a remote user system (110) via a communication unit (106) connected to the elevator control subsystem (112) of the multiple subsystems (102);

determining whether a local connection is established between the elevator control subsystem (112) and service equipment (120);

establishing the remote connection in response to determining that the local connection is not established between the elevator
control subsystem (112) and the service equipment (120); and

sending a time since the service equipment (120) was last active on the local connection and providing an option to complete the remote connection in response to determining
that the local connection is established between the elevator control subsystem (112) and the service equipment (120), the elevator control subsystem (112) is operating in a first mode of operation, and a configurable local activity timeout period for communication between the
elevator control subsystem (112) and the service equipment (120) has not expired.

US Pat. No. 9,457,994

METHOD OF ASSEMBLING AN ELEVATOR MACHINE FRAME

Otis Elevator Company, F...

1. A method of assembling an elevator machine frame comprising the steps of:
situating at least a portion of a motor in a desired position;
placing a first elevator frame support plate against the portion of the motor;
connecting a plurality of support rods to the first elevator frame support plate;
connecting a second elevator frame support plate to the support rods such that the first and second elevator frame support
plates are spaced from each other and in a desired alignment with each other; and

while the first and second elevator frame support plates are spaced from each other in the desired alignment, inserting a
traction sheave and an associated motor component through an opening in the second support plate in a direction from the second
elevator support plate toward the first elevator frame support plate and inserting at least a portion of the associated motor
component through a corresponding opening in the first elevator frame support plate.

US Pat. No. 9,434,579

ELEVATOR DEVICE AND ROLLER GUIDE ASSEMBLY

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
a car and/or a counterweight; and
a roller guide assembly mounted to the car and/or counterweight, the roller guide assembly comprising:
a shaft including shaft root portion and a spindle, the spindle for supporting a roller for engaging a guide rail;
a shaft support member that receives the shaft root portion therein; and
a member inserted between the shaft root portion and the aforementioned shaft support member, wherein the member limits the
shaft root portion from turning relative to the shaft support member; wherein an exterior surface of the shaft root portion
is restrained by an interior surface of the member and an exterior surface of the member is restrained by an interior surface
of the shaft support member to limit rotation of the shaft root portion relative to the shaft support member;

wherein the member is positioned concentrically about the shaft root portion and the shaft support member is positioned concentrically
about the member;

wherein the member is positioned concentrically about the shaft root portion around a common axis, the shaft support member
is positioned concentrically about the member around the common axis and the member limits rotation of the shaft root portion
relative to the shaft support member about the common axis.

US Pat. No. 9,302,886

ELEVATOR DOOR COUPLER ASSEMBLY

Otis Elevator Company, F...

1. An elevator door assembly, comprising:
a car door subassembly comprising:
a car door;
a first vane supported for movement relative to the car door;
a second vane supported for movement relative to the car door; and
a door mover;
a hoistway door subassembly comprising:
a hoistway door;
a locking member configured to selectively lock the hoistway door; and
a coupler member associated with the locking member,
wherein, when the car door is in a position adjacent the hoistway door:
the first vane is configured to be moved, relative to the car door, by the door mover so as to position the first vane in
contact with the coupler member and thereafter to cause movement of the coupler member such that the locking member moves
into an unlocked position prior to movement of the car door and the hoistway door from a closed position toward an open position;
and

the second vane is retained in a non-blocking position by the coupler member when the car door and the hoistway door move
from the closed position toward the open position, and

wherein, the second vane moves into a blocking position in which further movement of the car door is inhibited when the car
door is in another position different than the position adjacent the hoistway door and the car door moves toward the open
position.

US Pat. No. 9,150,384

ELEVATOR INSTALLATION WITH REDUCED HOISTWAY DIMENSIONS

Otis Elevator Company, F...

1. An elevator system, comprising:
a hoistway having a pit depth and an overhead height;
an elevator car arranged to move vertically within the hoistway, the elevator car having at least one idler sheave mounted
thereon, the elevator car having a front-to-back depth between 1 and 1.6 meters and sides that have a horizontal length corresponding
to the depth;

a rope suspending the car via the idler sheave;
a counterweight suspended by the rope and positioned on one of the sides of the elevator car;
first and second counterweight rails that guide movement of the counterweight, the counterweight rails being separated by
a distance of at least the front-to-back depth minus 0.2 meters; and

a drive machine arranged in the hoistway and engaging the rope to move the car, wherein said idler sheave is mounted at least
partially within the vertical projection of the car and has a diameter of less than 120 mm and wherein the elevator system
satisfies the condition that the sum of the pit depth and the overhead height is greater than the height of the car by no
more than 1.4 meters.

US Pat. No. 9,499,376

TURNAROUND MECHANISM FOR PASSENGER CONVEYORS

OTIS ELEVATOR COMPANY, F...

1. A turnaround mechanism for a passenger conveyor, the turnaround mechanism comprising:
a turnaround track for facilitating a smooth transition of a plurality of pallets between a passenger side and a return side,
each of the plurality of pallets having a front end portion engaging the turnaround track and a rear end portion connected
to a pallet chain , the pallet chain riding on a pallet chain roller track;

a track exchange mechanism having a track exchanger engageable with the front edge portion of each of the plurality of pallets
for transitioning the front edge portion of each of the plurality of pallets between the passenger side and the return side,
each of the plurality of pallets maintaining a generally horizontal orientation during the transitioning; and

a plurality of levers including an upper lever and a lower lever, the upper lever and the lower lever in toothed arrangement
with one another, the upper lever connected to the turnaround track.

US Pat. No. 9,394,144

OFFSET PALLET GUIDANCE FOR PASSENGER CONVEYOR

OTIS ELEVATOR COMPANY, F...

1. A passenger conveyor comprising:
a plurality of pallets arranged to form a travel surface of the passenger conveyor;
a first guide member extending from a first longitudinal end of the travel surface and disposed at a first lateral side of
the plurality of pallets, the first guide member supported of two or more pallets of the plurality of pallets; and

a second guide member extending from the first longitudinal end and disposed at a second lateral side of the plurality of
pallets, a position of the second guide member offset in a longitudinal direction along the travel surface relative to the
first guide member, the second guide member supportive of two or more pallets of the plurality of pallets, the first guide
member and the second guide member operably connected to two or more sprockets;

wherein the first guide member and the second guide member are pivotably connected to the plurality of pallets to guide movement
of the plurality of pallets;

the first guide member and the second guide member defining a guide track, a travel path of the plurality of pallets defining
a pallet track;

wherein a travel portion of the pallet track is radially offset from a travel portion of the guide track relative to an axis
defined by centers of the two or more sprockets.

US Pat. No. 9,120,646

SYSTEMS AND METHODS FOR DETERMINING FUNCTIONALITY OF AN AUTOMATIC DOOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A method for determining functionality of an automatically closing door system, comprising the steps of:
monitoring an obstruction signal output by a first sensor configured to detect an obstruction in a pathway of a door of the
door system, the obstruction signal corresponding to one of at least three states including a normal state, a first abnormal
state and a second abnormal state;

closing the door at a first speed if the obstruction signal corresponds to the normal state; closing the door at a second
speed if the obstruction signal corresponds to any one of the first and second abnormal states, the second speed being slower
than the first speed, the first abnormal state corresponding to a consistently active obstruction signal and the second abnormal
state corresponding to a consistently inactive obstruction signal;

monitoring a door position signal output by a second sensor configured to detect a current position of the door, the door
position signal corresponding to one of at least three states including a closed state, an open state and a blocked state;

determining if the first sensor is malfunctioning if the obstruction signal corresponds to the first abnormal state and the
door position signal corresponds to the closed state, or if the obstruction signal corresponds to the second abnormal state
and the door position signal corresponds to the blocked state; and

declaring the door system as malfunctioning if the first sensor is malfunctioning.

US Pat. No. 9,120,644

BRAKING DEVICE

Otis Elevator Company, F...

1. A braking device for an elevator, comprising:
a motor capable of generating a counter-electromotive force;
a braking system having a disengaged and an engaged position, wherein the braking system moves to the disengaged position
upon being energized and moves to the engaged position upon being de-energized; and

first and second switches having an open state, wherein in the open state, the first and second switches electrically couple
the motor to the braking system, enabling the counter-electromotive force of the motor to energize the braking system.

US Pat. No. 10,046,946

MEASURING WEIGHT OF A COMPARTMENT

OTIS ELEVATOR COMPANY, F...

1. A load measurement system, comprising:a compartment;
a damper configured to be positioned between the compartment and a platform and to compress at a predetermined rate based on a load of the compartment; and
a weight calculation unit configured to calculate a weight of the compartment based on the compression of the damper;
a non-contact sensor configured to measure a distance between the sensor and the compartment, wherein the weight calculation unit calculates the weight of the compartment based on the measured distance between the sensor and the compartment;
wherein the sensor includes an H-shaped plate on a bottom surface of the compartment having ends of the H extending substantially to edges of the bottom surface.

US Pat. No. 9,803,708

BRAKING DEVICE FOR A PASSENGER CONVEYOR

OTIS ELEVATOR COMPANY, F...

1. A braking device for a passenger conveyor having at least one moveable part comprising at least one projection on a side
of the moveable part, the projection projecting away from a surface on the side of the moveable part at least partially in
a direction that is generally parallel to an axis of rotation about which the moveable part rotates, the surface being generally
perpendicular to the axis of rotation, the braking device comprising:
a braking element having a braking portion that is selectively engageable with the moving part,
the braking element being moveable in a first direction into an engagement position where the braking element engages the
projection on the moveable part,

the braking element being moveable in a second, different direction from the engagement position to a braking position, the
braking element moving into the braking position responsive to movement of the moveable part urging the braking element toward
the braking position,

the braking element blocking movement of the moveable part beyond the braking position once the braking element reaches the
braking position, and

a stop member that an abutment surface of the braking element is received against in the braking position, engagement between
the stop member and the abutment surface preventing movement of the braking element and the moveable part beyond the braking
position,

wherein the braking element comprises a shaft having one end configured to engage the moveable part,
wherein the first direction is aligned with a longitudinal axis of the shaft and the second direction is transverse to the
first direction.

US Pat. No. 9,505,588

RETRACTABLE STOP FOR LOW OVERHEAD ELEVATORS

OTIS ELEVATOR COMPANY, F...

1. An elevator retractable stop retractable from a deployed position to a retracted position comprising:
a mounting bracket mounted in a vertical orientation, the vertical orientation corresponding to a direction of motion of a
counterweight, the mounting bracket having upper and lower portions;

an impact plate having proximal and distal portions, the proximal portion of the impact plate being pivotably connected to
the mounting bracket; and

a support member having an upper end pivotably connected to the distal portion of the impact plate and a lower end movable
in relation to the mounting bracket;

wherein the proximal portion of the impact plate is pivotably connected to the upper portion of the mounting bracket, and
the impact plate is horizontal in the deployed position to block downward movement of the counterweight and is vertical in
the retracted position, wherein horizontal is perpendicular to vertical; and

wherein the support member remains vertical both in the deployed position and the retracted position.

US Pat. No. 9,372,083

DEVICE AND METHOD FOR DETERMINING POSITION INFORMATION USING ACCELEROMETERS ON A ROTATING COMPONENT

Otis Elevator Company, F...

1. A device for determining a position of a component moved by operation of a motor, the device comprising:
a rotating member that rotates responsive to operation of the motor;
at least one accelerometer supported on the rotating member, the accelerometer providing an indication of at least one of
a tangential force that is tangential to a direction of rotation of the rotating member and a radial force that is perpendicular
to the tangential force; and

a controller that determines a position of the component based on the at least one force indication from the at least one
accelerometer;

wherein
the motor is moveable in a rotary direction that is distinct from rotation of the rotating member,
the device comprises a sensor that provides an indication of an amount of motor movement in the rotary direction and
the controller uses the indication of the amount of motor movement to cancel out any effect of the motor movement on the determination
of the position of the component.

US Pat. No. 9,067,763

BEARING CARTRIDGE AND ELEVATOR MACHINE ASSEMBLY

Otis Elevator Company, F...

1. A bearing cartridge assembly, comprising:
an inner sleeve;
an outer housing supported for rotation relative to the inner sleeve, the outer housing having side walls at opposite axial
ends of the outer housing, the outer housing having an end wall extending in an axial direction between the side walls, wherein
the end wall and the side walls are situated with respect to the inner sleeve so that there is a closed interior space defined
between the sidewalls of the outer housing and between the end wall of the outer housing and an axially extending, radially
outer most surface on the inner sleeve, the side walls of the outer housing having radially facing ends that are received
adjacent to the axially extending, radially outermost surface of the inner sleeve; and

a bearing member within the outer housing and received about the inner sleeve for facilitating rotation of the outer housing
relative to the inner sleeve, the bearing member having an axial dimension that is smaller than an axial dimension of the
end wall in the interior space, the bearing member being positioned relative to the inner sleeve and the outer housing to
provide a first lubricant space between one of the side walls of the outer housing and the bearing member.

US Pat. No. 9,688,510

HYDRAULIC BRAKE SYSTEM FOR ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. A braking system for an elevator comprising:
a brake disc;
one or more brake calipers interactive with the brake disc; and
a hydraulic brake unit operably connected to the one or more brake calipers, the hydraulic brake unit including a plurality
of valves to control hydraulic fluid flow during engagement of the brake calipers to the brake disc, the plurality of valves
including:

a first electromagnetic valve positioned and configured to control hydraulic fluid flow from a hydraulic fluid source to the
one or more brake calipers;

a second electromagnetic valve positioned and configured to control hydraulic fluid flow from the one or more brake calipers;
and

a third electromagnetic valve is positioned to direct hydraulic fluid flow from the one or more brake calipers to a hydraulic
fluid source;

wherein the third electromagnetic valve directs hydraulic fluid flow to a flow control valve to reduce a hydraulic fluid flow
rate in the brake unit, thereby reducing brake caliper to brake disc impact force and noise.

US Pat. No. 9,586,789

ELEVATOR BRAKING IN A BATTERY POWERED ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a battery;
a machine having a motor to impart motion to an elevator car;
an inverter having a plurality of switches to convert DC power from the battery to AC power for the machine in a motoring
mode;

a speed sensor coupled to the machine, the speed sensor to generate a speed signal indicative of machine speed; and
a controller to apply braking signals to a group of the switches in a braking mode, the braking signals having a duty cycle
in response to the speed signal.

US Pat. No. 9,399,562

ELEVATOR SPEED AND POSITION DETECTION SYSTEM USING AN OPTICAL SENSOR

OTIS ELEVATOR COMPANY, F...

1. An elevator system including a hoistway having a width and a speed and position detection system, comprising:
an elevator component associated within the hoistway;
an optical sensor associated within the hoistway, and capable of emitting a signal and receiving a reflected signal of the
emitted signal;

an object positioned within the hoistway in such a manner to be aligned in a path of the optical sensor and having surface
features; and

a processor operatively coupled to the optical sensor and capable of processing the reflected signal to provide an output
indicative of a speed and position of the elevator component, the processor using a time delay between emitting the signal
and receiving the reflected signal and an angle between the signal and the reflected signal to determine the speed and position
of the elevator component.

US Pat. No. 9,376,289

ELEVATOR CONTROL SYSTEM WITH SLEEP MONITOR

OTIS ELEVATOR COMPANY, F...

1. An elevator control system, comprising:
a control power supply;
a computing core in communication with the control power supply;
a communication power supply in communication with the computing core; and
a sleep monitor in communication with the control power supply, the computing core, and the communication power supply;
wherein, the sleep monitor is disposed to selectively turn on/off the control power supply and the computing core, and the
sleep monitor is disposed to selectively change an operating state of the communication power supply to a low voltage state.

US Pat. No. 9,878,875

BUILDING SELECTION IN ELEVATOR SYSTEM SUPPORTING MOBILE DEVICE CALLS

OTIS ELEVATOR COMPANY, F...

1. A method for connecting a mobile device to an elevator system, the mobile device executing a mobile application for issuing
elevator calls to the elevator system, the method comprising:
determining a geographical location of the mobile device;
obtaining a list of buildings within a geographical range of the geographical location of the mobile device;
determining if a registered building is in the list of buildings, the registered building being a building at which a user
has registered with the elevator system; and

automatically establishing a connection between the mobile device and the elevator system at the registered building nearest
to the geographical location of the mobile device.

US Pat. No. 9,376,295

ELEVATOR BRAKE DEVICE INCLUDING PERMANENT MAGNET BIAS TO APPLY A BRAKING FORCE

Otis Elevator Company, F...

1. An elevator brake device, comprising:
a permanent magnet;
a core supporting the permanent magnet;
a first plate near one side of the core with a first gap between the first plate and the core;
a second plate near another side of the core with a second gap between the second plate and the core, the first and second
plates remaining fixed relative to each other, the first and second plates being arranged to permit relative movement between
the core and the first and second plates; and

an electromagnet that selectively influences an amount of magnetic flux density across the first and second gaps, respectively,
to control a braking force of the brake device.

US Pat. No. 10,072,162

METHOD OF MAKING A CORD AND POLYMER JACKET ASSEMBLY HAVING A FLAME RETARDANT IN THE POLYMER JACKET MATERIAL

OTIS ELEVATOR COMPANY, F...

1. A method of making an elevator load bearing member, the method comprising:applying a thermoplastic polymer material to at least one elongated tension member to form a jacket of a desired shape, wherein the formed jacket includes a plurality of voids in the formed jacket; and
at least partially filling the plurality of voids in the formed jacket with a flame retardant material, wherein the flame retardant material comprises at least one of a halogen-free melamine based intumescent, a nanoscale filler, carbon nanotubes, and carbon nanofibers.

US Pat. No. 9,522,805

ELEVATOR SYSTEM FIXTURES AND SERVER FOR CONTROLLING THE FIXTURES

Otis Elevator Company, F...

1. A system for communicating with an elevator passenger, comprising:
a plurality of elevator system passenger interface device fixtures configured to allow an elevator passenger to provide input
to indicate at least an elevator service request and to communicate at least elevator service information to the elevator
passenger; and

a server that centralizes the processing required for handling passenger input for an elevator call at any of the interface
device fixtures and providing passenger information at any of the interface device fixtures, the server being configured to
communicate with the plurality of interface device fixtures,

the server being configured to determine when there is input at any of the interface device fixtures,
the server being configured to determine a meaning of the input,
the server being configured to determine output to provide at the corresponding interface device fixture and to communicate
the determined output to the corresponding interface device fixture, the determined output being responsive to the determined
meaning of the input.

US Pat. No. 9,102,502

DOUBLE-DECK ELEVATOR

Otis Elevator Company, F...

1. A double-deck elevator comprising:
two elevator cabs:
a frame that supports the cabs, the frame being at least partially situated on an outside of the cabs with spacing between
the frame and the cabs, the frame being arranged in a hoistway such that the frame can move vertically for carrying the cabs
along the hoistway;

a support member that supports the frame within the hoistway;
a machine associated with the support member, the machine causing selective movement of at least a portion of the support
member for moving the frame and the elevator cabs along the hoistway

a driving device that drives at ne of cabs to move relative to the other of the cabs;
a linking mechanism that operates responsive to the driving device to change a distance between the cabs, the linking mechanism
including at least two link members and a pivot that facilitates movement of the two link members relative to each other;

wherein said linking mechanism is located along at least one side of the cabs and the pivot is within the spacing between
the cabs and the frame;

wherein the frame includes a vertical beam and said pivot is situated in a longitudinal central portion of the vertical beam;
and

wherein said linking mechanism is arranged in a gap between said vertical beam and said two cabs.

US Pat. No. 9,850,093

SYSTEM AND METHOD FOR CONTROLLING ELEVATOR SYSTEM ACCESS

OTIS ELEVATOR COMPANY, F...

1. A method of controlling elevator system access, comprising the steps of:
receiving a request from a portable wireless communication device indicating a desire for at least access to the elevator
system;

providing an indication of an access credential to the portable wireless communication device if the request satisfies a selected
criterion, the access credential at least temporarily indicating that the desired access should be granted; and

granting the desired access responsive to receiving the provided access credential from the portable wireless communication
device.

US Pat. No. 9,809,418

ADVANCED SMOOTH RESCUE OPERATION

OTIS ELEVATOR COMPANY, F...

1. A method of operating an elevator system, the method comprising:
detecting, using a controller, when an external power source is unavailable;
controlling, using the controller, a plurality of components of the elevator system, wherein controlling comprises operating
at least one of an elevator car, a drive unit, an inverter and a brake;

detecting, using the controller, an original direction of travel of the elevator car;
detecting, using the controller, a mode of the elevator car, wherein the mode includes at least one of a motoring mode, a
near balance mode, and a regenerative mode;

determining, using the controller, a target floor; and
adjusting, using the controller, a velocity of the elevator car to reach the target floor in response to the mode detected;
allowing, using the controller, the velocity of the elevator car to decrease to about zero velocity, when the near balance
mode is detected; maintaining, using the controller, the about zero velocity for a selected duration of time; increasing,
using the controller, the velocity of the elevator car in the original direction of travel until it reaches an automatic rescue
operation velocity; maintaining, using the controller, the automatic rescue operation velocity for a second selected duration
of time; and decreasing, using the controller, the velocity of the elevator car as the elevator car approaches the target
floor;

wherein secondary power is provided to the brake, elevator doors, and a positional reference system in the controller;
wherein secondary power is not provided to a drive unit to propel the elevator.

US Pat. No. 9,809,420

COMPENSATORY MEASURE FOR LOW OVERHEAD OR LOW PIT ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. A safety system for an elevator, comprising:
a safety brake, operatively connectable to one of an elevator car or a counterweight, the safety brake comprising a safety
linkage configured to engage the safety brake when actuated;

a safety device, configured to be mounted to a guide rail, the safety device including an actuator and an actuation device,
the actuation device being movable between a first position and a second position,

wherein when the actuation device is in the first position, the safety device does not actuate the safety linkage of the safety
brake, and when the actuation device is in the second position, the safety device is configured to actuate the safety linkage
of the safety brake by physically contacting the safety linkage, wherein gravity causes the actuation device to move between
the first position and the second position.

US Pat. No. 9,604,823

ASSEMBLY FOR ROPING AN ELEVATOR

Otis Elevator Company, F...

1. A device for use in manually controlling vertical movement of an elongated member for an elevator system, comprising:
a base adapted to be secured in a set position;
a speed control member that is moveable relative to the base and configured to selectively contact the elongated member and
control a speed that the elongated member moves relative to the base;

a stop member biased into a stop position in which the stop member is configured to prevent movement of the elongated member
relative to the base absent an input force applied by a user to overcome the bias, the stop member having an exterior contour
corresponding to an exterior of the elongated member to avoid deflecting the elongated member when the elongated member is
engaged by the stop member in the stop position;

a first manual input member comprising one of a foot pedal or a handle configured to be manually moved by the user to overcome
the bias and move the stop member out of the stop position; and

a second manual input member comprising the other of the foot pedal or the handle configured to be manually moved by the user
to control a position of the speed control member.

US Pat. No. 9,599,582

SIMPLIFIED RESISTANCE BASED BELT INSPECTION

OTIS ELEVATOR COMPANY, F...

1. A resistance circuit for monitoring a support structure, comprising:
a voltage input node to supply a voltage;
a first set of resistors disposed at a belt-side of the structure and configured to indicate one or more voltages thereacross
corresponding to an effective resistance of the support structure, the first set of resistors including at least one temperature-dependent
resistor;

the first set of resistors including at least two resistors in series and coupled to the voltage input node, the at least
two resistors in series being in parallel with the effective resistance of the support structure; and

a second set of resistors disposed at a monitor-side of the structure and configured to indicate one or more voltages thereacross
corresponding to an initial effective resistance of the support structure, the second set of resistors including at least
one switched resistor having an adjustable resistance capable of selectively approximating the initial effective resistance;

wherein the first set of resistors is disposed at least partially in parallel relative to the effective resistance of the
support structure and the temperature-dependent resistor is disposed in series relative to the effective resistance of the
support structure, the temperature-dependent resistor being disposed in series with at least one fixed-resistance resistor,
the temperature-dependent resistor and the fixed-resistance resistor being configured to approximate a temperature coefficient
of a plurality of tension members disposed within the support structure.

US Pat. No. 9,517,918

CAR MOUNTED OVERSPEED GOVERNOR ACTUATION DEVICE

OTIS ELEVATOR COMPANY, F...

1. A device for reducing an actuation force spike in an elevator car safety system, the device comprising:
an elevator car mounted overspeed governor;
a safety gear;
a safety lever; and
a force reducing mechanism connected with the safety lever to reduce an impact force transmitted from the overspeed governor
to the safety lever and on to the safety gear;

wherein the force reducing mechanism comprises at least one of a torsion spring and a linear spring at least partially contained
within the overspeed governor.

US Pat. No. 9,511,976

POSITION FEEDBACK FOR ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A feedback system for a motor of an elevator system, comprising:
a first sensor disposed in proximity to a drive component of the elevator system, the first sensor being configured to detect
a change in position of the drive component; and

a processing circuit configured to receive a first data signal from the first sensor corresponding to the change in position
of the drive component and generate a feedback signal for controlling the motor based on the first data signal;

wherein the processing circuit-is configured to receive a second data signal from a second sensor and generate the feedback
signal based on the first and second data signals; and;

wherein the first data signal corresponds to a change in position of a traction sheave and the second data signal corresponds
to a change in position of a tension member, the processing circuit being configured to determine a state of traction between
the tension member and the traction sheave based on any discrepancies between the first and second data signals.

US Pat. No. 9,403,663

MANAGING REMOTE CONTROL OF AN ELEVATOR SYSTEM

Otis Elevator Company, F...

1. A method of managing remote control of an elevator system, comprising:
preventing any source located remotely from a site of the elevator system from controlling an operation of the elevator system
when there is an indication that the elevator system is being serviced by a mechanic;

determining whether a preselected time period has expired since the indication was provided;
performing the preventing when the indication exists and the time period has not yet expired; and
overriding the preventing when the time period has expired even if the indication still exists.
US Pat. No. 9,115,466

METHOD OF MAKING A WOVEN FABRIC HAVING A DESIRED SPACING BETWEEN TENSION MEMBERS

Otis Elevator Company, F...

1. A method of making a woven fabric, comprising the steps of:
weaving a plurality of load supporting tension members and a plurality of cross fibers together into a woven fabric having
a spacing between adjacent ones of the tension members, the spacing having a first dimension; and

shrinking at least some of the cross fibers to thereby decrease the spacing between the adjacent ones of the tension members
to a second, smaller dimension;

wherein the load supporting tension members are the primary load supporting elements of an elevator load bearing assembly.

US Pat. No. 10,055,657

DEPTH SENSOR BASED PASSENGER DETECTION

Otis Elevator Company, F...

1. A passenger conveyance system, comprising:a depth-sensing sensor within a passenger conveyance enclosure for capturing depth map data from within the passenger conveyance enclosure;
a processing module in electronic communication with the depth-sensing sensor to receive the depth map data, the processing module uses the depth map data to detect an object therein;
a data capture module in electronic communication with the depth-sensing sensor and the processing module, the data capture module operable to receive the depth map data from the depth-sensing sensor for communication to the processing module to classify the object, wherein the classification comprises identification of a human via application of a human shape model; and
a load sensor in electronic communication with the data capture module, the load sensor operable to trigger the data capture module to obtain the depth map data if the sensed load weight is less than a preset threshold.

US Pat. No. 9,840,395

MULTI-DRIVE THRUST MANAGER FOR ELEVATOR CONTROL

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a propulsion system comprising a plurality of motor segments forming a primary portion and a plurality of drives to impart
force on a secondary portion coupled to an elevator car; and

a controller operable to identify a local neighborhood of the drives, determine a health status of each of the drives within
the local neighborhood, and adjust a thrust command per active drive of the local neighborhood based on at least one of the
health status and a position of each active drive of the local neighborhood with respect to the secondary portion.

US Pat. No. 9,517,921

MACHINE ROOMLESS HYDRAULIC ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
a hoistway;
an elevator car supported within the hoistway;
a hydraulic cylinder associated with the elevator car for selectively moving the elevator car;
a reservoir within the hoistway, the reservoir being configured to contain fluid for selectively causing extension of the
cylinder;

a control valve within the hoistway, the control valve controlling communication of the fluid between the reservoir and the
cylinder;

a controller within the hoistway for controlling movement of the elevator car;
an access panel on one side of the hoistway for selectively closing an opening into the hoistway near the control valve and
the controller, the opening providing access to at least the control valve and the controller from outside of the hoistway
wherein the control valve and controller remain in the hoistway while being accessed through the access panel.

US Pat. No. 9,242,834

WIRELESS DESTINATION ENTRY FOR ELEVATOR DISPATCHING SYSTEM VIA WEB PAGE THAT IS PUSHED TO A WIRELESS DEVICE

OTIS ELEVATOR COMPANY, F...

1. A method for wireless destination entry in an elevator dispatching system, the elevator dispatching system comprising a
wireless transmitter/receiver (T/R), the method comprising:
receiving a request to join a network of the T/R from a wireless device;
determining whether the wireless device is on a list of approved wireless devices based on a device identifier of the wireless
device;

based on determining that the wireless device is on the list of approved wireless devices based on the device identifier of
the wireless device, pushing a web page from the T/R to the wireless device;

receiving a service request by the T/R from the wireless device via the web page;
communicating the service request from the T/R to a group controller; and
dispatching an elevator car by the group controller to service the service request.

US Pat. No. 10,246,299

SYSTEM INCLUDING STRUCTURALLY INDEPENDENT ELEVATOR MACHINE GUIDERAIL MOUNTS

Otis Elevator Company, F...

1. An elevator system, comprising:a car guiderail, a first counterweight guiderail and a second counterweight guiderail spaced from the first counterweight guiderail in a lateral direction, the car guiderail located between the first counterweight guiderail and the second counterweight guiderail in the lateral direction;
an elevator machine including a frame, a motor, a brake and a sheave;
a first guiderail mount structurally connecting the frame to the first and the second counterweight guiderails, the first guiderail mount structurally connected to the frame at a connection point located laterally between the motor and the brake; and
a second guiderail mount structurally connecting the frame to the car guiderail independent of the first guiderail mount.

US Pat. No. 10,072,795

LUBRICANT DISTRIBUTOR

OTIS ELEVATOR COMPANY, F...

1. A lubricant distributor of a lubrication system configured to lubricate a plurality of components of a device, comprising:a housing including an input opening, a plurality of output openings, and a shaft opening, wherein each of the output openings is associated with one or more components; and
a valve stem arranged within the shaft opening, the valve stem including a bore and a plurality of lubricant outlets, each of the plurality of lubricant outlets includes a recess formed in an outer diameter of the valve stem and a channel extending through the recess to the bore, the bore is configured to fluidly couple the input opening to each of the lubricant outlets, each lubricant outlet is associated with and configured to provide lubricant to at least one of the plurality of output openings at a distinct position of the valve stem.

US Pat. No. 10,071,881

SAFETY SYSTEM FOR USE IN A DRIVE SYSTEM

Otis Elevator Company, F...

1. A safety system configured for use in a drive system, the safety system comprising:a first safety sensor operable to provide a first sensor signal indicative of a safety condition of the drive system;
a second safety sensor operable to provide a second sensor signal indicative of the safety condition;
a safety device operable to process the first and second sensor signals to determine a safety state of the drive system, wherein the safety device is operable to control a unit of the drive system based on the safety state of the drive system;
wherein the safety device includes a multi-core processor that includes a first processing core and a second processing core, the first processing core is operable to receive directly from the first safety sensor the first sensor signal and to receive directly from the second safety sensor the second sensor signal, the second processing core is operable to receive the second sensor signal from the second safety sensor, and the first processing core is operable to process the first sensor signal and the second sensor signal and the second processing core is operable to process the second sensor signal to determine the safety state of the drive system;
wherein the safety device includes a safety control unit, the safety control unit being operable to receive signals from the first and second processing cores, and the safety control unit being operable to control the unit of the safety system based on the signals received from the first and second processing cores;
wherein the unit includes a drive unit and a first brake unit, and wherein the safety system further comprises a second brake unit, and wherein each of the first and second processing cores is operable to control the second brake unit by providing a signal indicative of a safety state of the drive system directly to the second brake unit.

US Pat. No. 10,059,569

MONITORING SYSTEM OF A PASSENGER CONVEYOR, A PASSENGER CONVEYOR, AND A MONITORING METHOD THEREOF

OTIS ELEVATOR COMPANY, F...

1. A monitoring system for a passenger conveying device comprising:an imaging sensor and/or a depth sensing sensor used for sensing a monitoring area of the passenger conveying device to acquire data frames; and
a processing device used for performing data processing on the data frames to monitor whether the monitoring area is abnormal, wherein the processing device is configured to:
perform a background acquisition process, wherein the background acquisition process includes acquiring a background model based on data frames sensed when the monitoring area is in a normal state;
perform a foreground detection process, wherein the foreground detection process includes comparing data frames sensed in real time with the background model to obtain a foreground object;
perform a foreground feature extraction process, wherein the foreground feature extraction process includes:
defining an abnormal human body model based on human body non-self-learning modeling and/or human body self-learning modeling; and
extracting a corresponding foreground object markup feature from the foreground object; and
perform a state judgment process, wherein the state judgment process includes judging whether the foreground object belongs to an abnormal population at least based on the foreground object markup feature.

US Pat. No. 10,046,951

FIXING MODULES AND PALLETS FOR A PALLET CONVEYOR

OTIS ELEVATOR COMPANY, F...

14. A pallet conveyor comprising a pallet conveyor drive mechanism, the drive mechanism comprising a plurality of fixing modules, the fixing module comprising:a pallet side comprising a connection portion, which is configured to be fixed in a non-rotatable manner to a pallet of the pallet conveyor;
a pallet chain side, which is configured for facing the pallet chain and for receiving at least one fixing element protruding from the pallet chain; and
a securing mechanism, comprising at least one moveable securing element which is configured for securing the at least one fixing element within the fixing module so that the fixing module is non-rotatably fixed to at least one pallet chain link of the pallet chain, and at least one pallet chain.

US Pat. No. 9,862,571

ELEVATOR CORD HEALTH MONITORING

OTIS ELEVATOR COMPANY, F...

14. An elevator system comprising:
an elevator car;
one or more sheaves;
a belt or rope comprising a plurality of wires arranged into a plurality of cords for supporting and/or driving the elevator
car routed across the one or more sheaves and operably connected to the elevator car, the plurality of cords interconnected
to form a bridge circuit, at least two legs of the bridge circuit comprising separate and distinct cords of the plurality
of cords;

wherein each leg of the bridge circuit is configured as an LCR circuit allowing for measurement of complex impedance of the
legs of the bridge circuit.

US Pat. No. 9,550,655

PALLET RETURN IN MOVING WALKWAYS

OTIS ELEVATOR COMPANY, F...

15. A moving walkway, comprising:
a plurality of pallets coupled to and guided by a pallet track, each of the plurality of pallets having at least one front
roller and at least one rear roller for guiding each of the plurality of pallets in the pallet track;

a pallet return apparatus having a return guide for facilitating a turnaround of each of the plurality of pallets from a passenger
side to a return side; and

a leg movably connected to each of the plurality of pallets, each of the legs guiding the at least one rear roller into engagement
with the return guide while the at least one front roller continues along the pallet track.

US Pat. No. 9,505,584

ELEVATOR CAR ASSIGNMENT STRATEGY THAT LIMITS A NUMBER OF STOPS PER PASSENGER

OTIS ELEVATOR COMPANY, F...

1. A method of controlling an elevator system, comprising the steps of:
determining that a new passenger requests elevator service from a departure floor to a destination floor;
ranking any candidate elevator cars based on at least one criterion;
determining a number of stops for each assigned passenger for a ranked candidate elevator car if the new passenger is assigned
to the ranked candidate elevator car;

determining whether any ranked candidate elevator car is a qualified car that can accept the new passenger and limit a number
of stops for each passenger assigned to the qualified car to a desired maximum number of stops; and

assigning the new passenger to a qualified car that has a most favorable ranking of any qualified cars.

US Pat. No. 10,093,518

REMOTE INSPECTION OF PASSENGER CONVEYORS

OTIS ELEVATOR COMPANY, F...

1. A remote inspection device for a passenger conveyor, comprising:at least one camera mounted directly above the passenger conveyor for monitoring external conditions of the passenger conveyor;
a remote controller for performing a remote visual inspection using the camera;
a passenger conveyor controller for operating the passenger conveyor at a normal speed during a normal operation and for operating the passenger conveyor at a slower speed or bringing it to a complete stop during a remote visual inspection; and
a sensor connected to the passenger conveyor controller and arranged in the vicinity of the entrance of the passenger conveyor for detecting the presence of a passenger approaching the entrance of the passenger conveyor,
wherein the remote controller is connected to the passenger conveyor controller and the camera via remote access server, and
wherein the passenger conveyor controller is configured to transmit a signal to the remote controller for interrupting the initiation of a remote visual inspection in response to the detection of a passenger approaching the entrance when initiating the remote visual inspection, and/or transmit a signal to the remote controller for interrupting the remote visual inspection and resume normal operation of the passenger conveyor in response to the detection of a passenger approaching the entrance during the remote visual inspection.

US Pat. No. 9,994,428

BRAKE FOR USE IN PASSENGER CONVEYOR SYSTEM

Otis Elevator Company, F...

1. A brake for use in a passenger conveyor system, the passenger conveyor system including a drive system operable to drive a drive component in a desired direction, wherein the brake is actuated by a reversal in direction of movement of the drive component, wherein the drive system is operable to rotationally drive the drive component in the desired direction; andwherein the brake further comprises:
an outer ring connected to the drive component such that the outer ring and the drive component are concentrically aligned about a rotation axis; and
an inner block disposed within a cavity defined by the outer ring such that the inner block and the outer ring are axially and concentrically aligned, the inner block being configured such that a first channel is formed between the inner block and the outer ring.

US Pat. No. 9,887,649

MOTOR TORQUE RIPPLE REDUCTION USING DC BUS HARMONICS

OTIS ELEVATOR COMPANY, F...

1. A method comprising:
sensing an electric parameter of an input electric signal;
detecting a ripple in an AC component of the electric parameter;
determining a correction to reduce the ripple in the AC component; and
applying the correction to an electric signal supplied to an energy sink to reduce torque ripple; wherein:
detecting the ripple comprises using a discrete Fourier transform on the input electric signal to detect a non-zero result.

US Pat. No. 9,862,572

SYSTEM AND METHOD FOR MONITORING WIRE ROPES

Otis Elevator Company, F...

1. A system for monitoring a first wire rope and a second wire rope, the first and second wire ropes each including a contact
portion that contacts a sheave, a first end portion, and a monitored portion that extends between the contact portion and
the first end portion, the sheave electrically connecting the contact portions of the first and second wire ropes, the system
comprising:
a controller that is electrically connected to each of the first and second wire ropes to form a circuit with the monitored
portions of the first and second wire ropes;

wherein the controller selectively applies a signal to the monitored portions of the first and second wire ropes and determines
an electrical characteristic thereof;

wherein the controller uses the determined electrical characteristic to determine a condition of the first and second wire
ropes.

US Pat. No. 9,783,392

ELEVATOR DOOR STOPPING DEVICE

OTIS ELEVATOR COMPANY, F...

1. An elevator door stopping device to prevent an elevator door from closing by itself, the elevator door including a motor
for opening and closing the elevator door, the elevator door stopping device comprising:
a first magnetic body fixed on a shaft rotating in interlock with opening and closing of the elevator door, the first magnetic
body generating a first magnetic force in a radial direction perpendicular to the shaft, and a second magnetic body at a pre-determined
interval from the first magnetic body in such a manner that the second magnetic body has an opposite pole to the first magnetic
body, so that a second magnetic force is generated in a radial direction perpendicular to the shaft;

wherein the first magnetic body includes a first magnetic body plate and a plurality of first permanent magnets fixed along
a circumferential surface of the first magnetic body plate;

wherein the second magnetic body includes a second magnetic body plate and a plurality of second permanent magnets attached
to a circumferential surface of the second magnetic body plate;

wherein the first magnetic body and the second magnetic body are concentric;
wherein the rotary force of the shaft when the motor is operated is stronger than the first magnetic force and the second
magnetic force between the first magnetic body and the second magnetic body.

US Pat. No. 9,630,805

NON-LINEAR STIFFNESS ROLLER ASSEMBLY

OTIS ELEVATOR COMPANY, F...

1. A roller apparatus, comprising:
a bearing wheel configured to rotatably couple the roller apparatus to a roller shaft; and
a resilient member radially disposed about the bearing wheel and configured to contact a guiderail at different magnitudes
of loads, the resilient member including a first section of a first diameter and a second section of a second diameter, the
first section being caused to deflect in response to loads within a first load range, the second section being caused to deflect
in response to loads within a second load range, the resilient member configured to exhibit a stepwise increase in stiffness
with a gradual increase in load, the first diameter being greater than the second diameter, the first section including at
least two separate, radially extended surfaces and the second section disposed between the at least two separate, radially
extended surfaces, wherein the second section comes in direct contact with the guiderail upon the stepwise increase in stiffness.

US Pat. No. 10,071,884

DETECTION OF STATE OF ENGAGEMENT BETWEEN STEP AND COMB PLATE OF PASSENGER CONVEYOR

OTIS ELEVATOR COMPANY, F...

1. An engaging state detection system of steps and comb plates of a passenger conveyor, comprising:a depth sensing sensor configured to sense at least an engaging portion between a step and a comb plate of the passenger conveyor to obtain depth maps; and
a processing apparatus configured to analyze the depth maps to detect whether the engaging state between the step and the comb plate is a normal state, the processing apparatus being configured to comprise:
a background acquisition module configured to acquire a background model based on depth maps sensed when the passenger conveyor has no load and the engaging state is a normal state;
a foreground detection module configured to compare a depth map sensed in real time with the background acquisition model to obtain a foreground object; and
an engaging state judgment module configured to process data at least based on the foreground object to judge whether the engaging state is a normal state.

US Pat. No. 10,046,948

VARIABLE ELEVATOR ASSIGNMENT

OTIS ELEVATOR COMPANY, F...

1. A system for assigning an elevator to a user, comprising:an input/output (110) unit for receiving a user request to call an elevator; and
a processor for processing the user request to assign an elevator to the user, the processor configured to perform one of a first assignment process and a second assignment process, the first assignment process including determining whether a delay condition exists for delaying assignment of the elevator to the user, the delay condition based on one or more of an elevator position, a user position, an elevator arrival time, and a user arrival time at elevator doors, the first assignment process further including delaying assignment of the elevator to the user based on determining that the delay condition exists, and assigning the elevator to the user based on determining that the delay condition does not exist, and the second assignment process including assigning the elevator to the user and notifying the user of the assignment, determining whether an assignment change condition exists, changing the assignment to another elevator based on determining that the assignment change condition exists, and notifying the user of the assignment change.

US Pat. No. 9,919,900

BEDPLATE FOR ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A support member configured for use in a machine room of an elevator system, comprising:
a base including a car end and a counterweight end, the counterweight end being arranged substantially parallel to a wall
of the machine room, the counterweight end being arranged at an angle relative to the car end;

an idler sheave having a plurality of grooves mounted to the base in an orientation generally parallel to the car end, the
idler sheave being configured to rotate about a first axis of rotation; and

a plurality of individual sheaves mounted to the base in a staggered configuration substantially complementary to the angle
of the counterweight end relative to the car end, each of the plurality of individual sheaves being configured to rotate about
a second axis of rotation parallel to the first axis of rotation and about a substantially vertical third axis of rotation.

US Pat. No. 9,850,099

SKIRT FOR PASSENGER CONVEYER

OTIS ELEVATOR COMPANY, F...

11. A passenger conveyor step comprising:
a tread with a tread surface; and
a skirt secured to the step, the skirt including an upper tread edge;
wherein the upper tread edge extends beyond the tread surface by at least about 10 mm.

US Pat. No. 9,834,406

ELEVATOR SYSTEM INCLUDING A POWER STORAGE DEVICE WITH A SUPERCAPACITOR UNIT AND A BATTERY UNIT

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car and a counterweight operable to be translated within a hoistway;
a load bearing flexible member extending between the elevator car and the counterweight;
a motor having a drive, which motor is operable to move the load bearing member and thereby drive the elevator car and counterweight
within the hoistway, and wherein the elevator motor and drive are configured to selectively produce regenerative power; and

an elevator control system that includes a power manager unit and a power storage device, wherein the power storage device
includes a supercapacitor unit and a battery unit, and wherein the power manager unit is operable to selectively manage a
flow of power between the power storage device and the motor drive, and a flow of regenerative power from the motor drive
to the power storage device;

wherein the power manager unit is further operable to selectively manage power flow between the supercapacitor unit and the
battery unit.

US Pat. No. 9,791,009

BRAKE TORQUE MONITORING AND HEALTH ASSESSMENT

OTIS ELEVATOR COMPANY, F...

1. A method for monitoring brake torque of an elevator having a motor, the method comprising:
engaging an elevator brake;
determining a minimum motor current required to drive an output shaft of the motor through the brake while engaging the brake;
computing a baseline brake torque based at least partially on the minimum motor current;
periodically monitoring the brake torque for any significant decrease as compared with the baseline brake torque; and
generating an alert if a subsequently computed brake torque is determined to be less than a predefined fraction of the baseline
brake torque.

US Pat. No. 9,725,279

ELEVATOR TRAFFIC MONITORING SYSTEM AND METHOD

OTIS ELEVATOR COMPANY, F...

1. A method comprising the steps of:
distributing identifying tags to a plurality of potential elevator passengers such that each passenger has a uniquely identifiable
one of the tags, wherein at least some of the identifying tags are associated with each other based on some relationship between
the passengers having the associated identifying tags;

monitoring movement of a plurality of the tags; and
determining collective elevator system traffic information based on the monitored movement of individual ones of the plurality
of tags and corresponding elevator system operation.

US Pat. No. 9,688,512

ELEVATOR BRAKE

OTIS ELEVATOR COMPANY, F...

1. A brake for an elevator system, the brake comprising:
a first brake lining configured to be frictionally engageable with a rail of the elevator system;
a second brake lining configured to be frictionally engageable with the rail;
a first biasing member configured to urge the first brake lining to engage the rail; and
a first actuator configured to move the first brake lining to disengage the rail when the first actuator is energized, wherein
the brake is configured to be mounted on an elevator car of the elevator system;

wherein the first actuator further comprises a backing block, a first solenoid housed in the backing block, and an armature
disposed between the solenoid and the first brake lining;

wherein an end of the armature is sloped toward the backing block.

US Pat. No. 9,637,349

ELEVATOR BRAKE INCLUDING COAXIALLY ALIGNED FIRST AND SECOND BRAKE MEMBERS

Otis Elevator Company, F...

1. An elevator brake, comprising
a first braking member, said first braking member being biased by a first spring member into engagement with a braking surface,
said first braking member comprising a first armature being arranged such as to be actuated by an electromagnetic actuator,
to disengage said first braking member from said braking surface against the biasing force from said first spring member,
said first braking member comprising a first housing; and

a second braking member, said second braking member being biased by a second spring member into engagement with a braking
surface, said second braking member comprising a second armature being arranged such as to be actuated by an electromagnetic
actuator, to disengage said second braking member from said braking surface against the biasing force from said second spring
member, said second braking member comprising a second housing;

wherein said elevator brake comprises a first electromagnetic actuator adapted to actuate said first armature, and a second
electromagnetic actuator adapted to actuate said second armature; and

wherein said first spring member comprises a plurality of first springs arranged along the periphery of a circle around an
axis in equal angular distances to each other, and said second spring member comprises a plurality of second springs arranged
along the periphery of a circle around said axis in equal angular distances to each other, said first springs being accommodated
within respective recesses formed in said first housing, and said second springs being accommodated within respective recesses
formed in said second housing.

US Pat. No. 9,663,327

ELEVATOR BRAKING SYSTEM

OTIS ELEVATOR COMPANY, F...

5. An elevator system comprising:
one or more rails fixed in a hoistway;
an elevator car configured to move through the hoistway along the one or more rails;
one or more braking systems including:
a first braking surface secured to the elevator car and frictionally engageable with a first side of a rail of the elevator
system;

a second braking surface secured to the elevator car and frictionally engageable with a second side of the rail, opposite
the first side;

a braking actuator operably connected to the first braking surface configured to urge engagement or disengagement of the first
braking surface with the rail to stop and/or hold the elevator car during operation of the elevator system, wherein the braking
actuator is a solenoid; and

a safety of the elevator operably connected to the second braking surface; wherein the second braking surface is operably
connected to and translatable along a braking device slot via a pin disposed in the braking device slot and operably connected
to the safety, the braking device slot is positioned nonparallel to the rail;

wherein the second braking surface is movable along the braking system parallel to the slot via a safety actuator and via
frictional interaction with the rail, the second braking surface urging movement of one or more surfaces of the safety into
engagement with the rail; and

wherein the braking system is asymmetric about a longitudinal axis disposed at a centerline of the rail.

US Pat. No. 9,580,276

ELEVATOR SYSTEM WITH MESSAGING FOR AUTOMATED MAINTENANCE

Otis Elevator Company, F...

1. An elevator system, comprising:
a controller configured to determine a condition of at least one elevator system component, the controller classifying the
determined condition as one of (i) pertaining to a need for elevator maintenance, (ii) pertaining to a condition in which
an elevator is blocked, or (iii) pertaining to a condition in which an elevator is running with disturbance; and

a message transceiver coupled with the controller, the message transceiver being configured as a cellular communication device
to utilize a cellular communication service to send a notification message to a remotely located mobile station that includes
an indication of the condition determined and classified by the controller without requiring a mechanic to be onsite at the
location of the elevator system, the message transceiver being configured to receive a response message from the remotely
located mobile station that indicates how the controller can address the determined condition.

US Pat. No. 9,906,183

PARALLEL INTERLEAVED 2-LEVEL OR 3-LEVEL REGENERATIVE DRIVES

OTIS ELEVATOR COMPANY, F...

1. A three-phase paralleled active front-end drive, comprising:
a first plurality of interphase inductors configured for connection to a three phase alternating current (AC) power source
and operable to distribute power from a three phase alternating current source to a first converter and a second converter
configured to transfer power to a first and an second direct current (DC) bus respectively;

a bus coupler operably coupling the first DC bus to a second DC bus;
a first inverter operably connected to the first DC bus;
a second inverter operably connected the second DC bus, the first inverter and second the inverter each configured to provide
a plurality of motor excitation signals;

a first controller operably connected to the first converter and the second converter as well as the first inverter and the
second inverter, the first controller configured to generate control signals to cause the first converter and the second converter
to transfer power to a first and an second direct current (DC) bus respectively, and the first controller configured to generate
control signals to cause the first inverter and the second inverter to generate a plurality of motor excitation signals respectively;
and

a second plurality of interphase inductors operable to combine the plurality of motor excitation signals from the first inverter
with the plurality of motor excitation signals from the second inverter.

US Pat. No. 9,884,744

ROPELESS HIGH-RISE ELEVATOR INSTALLATION APPROACH

OTIS ELEVATOR COMPANY, F...

1. A method for constructing a building with an elevator system, the method comprising:
forming a first hoistway for the elevator system within two adjacent levels of the building;
installing a first stationary part of a first linear permanent magnet motor within the first hoistway;
placing a first elevator car within the first hoistway;
mounting a first moving part of the first linear permanent magnet motor on the first elevator car;
using the first stationary part and the first moving part of the first linear permanent magnet motor to generate a vertical
thrust force to move the first elevator car within the first hoistway, the first elevator car carrying at least one of passengers,
equipment and materials for construction of upper levels of the elevator system and the building

forming a second hoistway for the elevator system next to, and distinct from, the first hoistway;
installing a second stationary part of a second linear permanent magnet motor within the second hoistway;
mounting a second moving part of the second linear permanent magnet motor on the second elevator car;
placing a second elevator car within the second hoistway; and
coupling the first and second elevator cars together such that they share an interior compartment, wherein the first coupled
elevator car is located within the first hoistway and the first coupled elevator car is programed to move upwards and downwards
within the first hoistway, and wherein the second coupled elevator car is located within the second hoistway and the second
coupled elevator car is programed to move upwards and downwards within the second hoistway.

US Pat. No. 9,884,745

SYSTEMS AND METHODS FOR DETERMINING FIELD ORIENTATION OF MAGNETIC COMPONENTS IN A ROPELESS ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A ropeless elevator system (20) comprising:
an elevator car (24);

a hoistway 22 in which the elevator car (24) travels;

a ropeless propulsion system (50), the ropeless propulsion system (50) comprising:

electrical windings (60) energized by a power source (68), the electrical windings (60) affixed to a stationary structure (54), the stationary structure (54) associated with the hoistway (22); and

a magnet (58), the magnet (58) affixed to a moving structure (52), the moving structure (52) associated with the elevator car (24), and interaction between the electrical windings (60) and the magnet (58) generates a thrust force on the elevator car (24) traveling in the hoistway (22); and

an array of Hall effect sensors (81), the array of Hall effect sensors (81) determining a sensed magnetic field, the sensed magnetic field being associated with electrical currents carried by the
windings (60) and used to determine a magnetic field orientation of the electrical currents carried by the windings (60) with respect to the magnet (58).

US Pat. No. 9,884,749

SENSOR ASSEMBLY, SECURITY SYSTEM AND PASSENGER CONVEYOR

OTIS ELEVATOR COMPANY, F...

1. A sensor assembly for a passenger conveying device, characterized in that the sensor assembly comprises:
an optical fiber disposed along a length of a skirt board of the passenger conveying device;
a light source disposed at a first end of the optical fiber, light of the light source being incident into the optical fiber;
and

an optical receiver disposed at the first end of the optical fiber, the optical receiver receiving backwards scattered light
from the optical fiber and being capable of sensing a signal indication of the backwards scattered light,

wherein the optical fiber is associated with a sensing element such that the sensing element causes deformation of the optical
fiber when the sensing element is subjected to a pressure, and the optical receiver is capable of sensing a change in the
signal indication of the backward scattered light caused by the deformation of the optical fiber.

US Pat. No. 9,873,593

FIRE RESISTANT COATED STEEL BELT

OTIS ELEVATOR COMPANY, F...

1. A belt for suspending and/or driving an elevator car of an elevator system comprising:
a plurality of tension members arranged in a lengthwise direction;
a jacket substantially retaining the plurality of tension members, the jacket defining a traction portion, a back portion,
and an inner portion between the traction portion and the back portion; and

an edge treatment at one or more lateral edges of the belt to increase fire resistance of the lateral edges, the edge treatment
entirely perimetrically enclosing a tension member of the plurality of tension members;

wherein the traction portion is formed from a first material and the inner portion is formed from a second material having
an increased fire resistance compared to the first material.

US Pat. No. 9,828,211

ACTIVELY DAMPING VERTICAL OSCILLATIONS OF AN ELEVATOR CAR

Otis Elevator Company, F...

1. A system for damping vertical oscillations of an elevator car stopped at an elevator landing, the system comprising:
an elevator traction sheave operable to receive a torque, wherein oscillations in the torque correspond to the vertical oscillations
of the car stopped at the landing during a first mode of operation;

a sensor operable to provide a sensor signal indicative of the torque;
a controller operable to provide a control signal based on the sensor signal; and
a motor operable to apply the torque to the sheave and drive the sensor signal towards a baseline value in response to receiving
the control signal during a second mode of operation, wherein the driving of the sensor signal towards the baseline value
reduces the vertical oscillations of the car;

wherein the controller is operable to determine the baseline value based on changes in the sensor signal during at least a
portion of at least one of the vertical oscillations of the car, and the baseline value is substantially equal to an average
of the sensor signal during the at least one of the vertical oscillations of the elevator car.

US Pat. No. 9,821,983

ELEVATOR BRAKING DEVICE

OTIS ELEVATOR COMPANY, F...

1. An elevator braking device comprising:
a brake housing;
at least one roller supported by the brake housing, the roller being selectively moveable between a first position in which
the roller does not engage a guide rail and a second position in which the roller engages and rolls along the guide rail;

at least one biasing member supported by the brake housing, associated with the at least one roller and biasing the roller
toward the guide rail in the second position; and

at least one braking surface supported by the brake housing and engaging a periphery of the roller that faces the guide rail
such that friction between the periphery of the roller and the braking surface provides a stopping force for stopping vertical
movement of an associated elevator car or counterweight.

US Pat. No. 9,815,665

BATTERY MOUNTING IN ELEVATOR HOISTWAY

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
an elevator car movably mounted within a hoistway;
a machine operatively connected to the elevator car and capable of moving the elevator car within the hoistway; and
a power source mounted within the hoistway and operatively connected to the machine, the power source configured to supply
power to the machine, wherein the supplied power is sufficient to move the elevator car under normal operating conditions;

a bedplate mounted within the hoistway;
wherein the power source and the machine are mounted to the bedplate;
an inverter mounted on the bedplate, the inverter receiving power from the power source and providing power to the machine.

US Pat. No. 9,776,832

SELF-PROPELLED CARGO LIFT FOR ELEVATOR SYSTEMS

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a car, configured to travel through a hoistway;
a first stationary drive unit, configured to be mounted in the hoistway,
a first movable drive unit mounted to the car and driven by the first stationary drive unit,
a second car, configured to travel through the hoistway, a second movable drive unit mounted to the second car;
wherein the second car is physically connected to the car.

US Pat. No. 9,718,646

CHAIN DRIVE SYSTEM WITH POLYGON COMPENSATION

OTIS ELEVATOR COMPANY, F...

1. A chain drive comprising:
a chain configured to rotate in a closed loop forming a load track and a return track interconnected by first and second turnaround
sections;

a drive which is arranged in the first turnaround section for driving the chain;
wherein the second turnaround section comprises a stationary turnaround structure which is configured to reverse the direction
of travel of the chain by 180 degrees, the stationary turnaround structure extending at least partially along a polygon compensation
curve designed for compensating the polygon effect of the chain traveling along the loop providing a polygon compensation
system.

US Pat. No. 9,599,201

POLYGON COMPENSATION COUPLING FOR CHAIN AND SPROCKET DRIVEN SYSTEMS

OTIS ELEVATOR COMPANY, F...

1. A polygon compensation coupling system, the system comprising:
a chain sprocket; and
a main drive chain sprocket in engagement with the chain sprocket, the engagement defined by a compensation curve to reduce
a polygon effect;

wherein the chain sprocket comprises a plurality of compensation holes;
wherein the main drive chain sprocket comprises a plurality of axles, the main drive chain sprocket is engaged to the chain
sprocket through each of the plurality of compensation holes by a respective axle of the plurality of axles, wherein rotation
of the main drive chain sprocket causes rotation of each of the respective axles within each of the plurality of compensation
holes in accordance with the compensation curve.

US Pat. No. 9,592,993

CUSTOMIZED ELEVATOR PASSENGER INTERFACE

Otis Elevator Company, F...

1. An elevator passenger interface device, comprising:
a communication component that facilitates communications between a passenger and an associated elevator system, the communications
comprising at least one of passenger input to request elevator service and information provided to the passenger, the communication
component being a destination entry device that is situated to allow the passenger to provide an indication of a desired destination
before the passenger enters an elevator car; and

a controller that controls a functionality of the communication component, the controller including a customization module
configured to change the functionality of the communication component responsive to authorized user input that is distinct
from the passenger input, the authorized user input including a selection of at least one of a feature used to present information
to a passenger or a feature used to allow a passenger to request elevator service,
and wherein
the communication component comprises a display and the controller controls the display to provide selected information to
the passenger

the customization module provides an authorized user with a plurality of pre-selected background appearances and a plurality
of preconfigured passenger input images to be displayed on the display to facilitate the authorized user arranging content
on the display in a desired manner;

the passenger input images presents only destinations that are available according to a schedule set by the authorized user;
the controller accepts passenger input only corresponding to a presented destination;
the background appearance is scheduled to be different for each of a plurality of time periods;
and
the interface device is integrated with a building security system that controls access over particular areas within a building
during particular times.

US Pat. No. 9,573,794

DRIVE SYSTEM FOR PASSENGER CONVEYOR

OTIS ELEVATOR COMPANY, F...

1. A drive assembly for a chain drive device having pallet chain links, pallet chain rollers and extension pins, comprising:
a drive chain band having a first drive band and a second drive band;
a plurality of intermediate connectors disposed between the first and second drive bands, each intermediate connector having
a first toothed profile coupled to the first drive band and a second toothed profile coupled to the second drive band, the
first and second toothed profiles being configured to receive the extension pins;

at least one sprocket wheel having a first sprocket and a second sprocket, the first sprocket being configured to engage the
first drive band, the second sprocket being configured to engage the second drive band;

wherein the sprocket wheel includes a leading wheel having a first leading sprocket and a second leading sprocket, and a trailing
wheel having a first trailing sprocket and a second trailing sprocket, the first drive band being engaged about the first
leading sprocket and the first trailing sprocket, the second drive band being engaged about the second leading sprocket and
the second trailing sprocket; and

at least one drive sprocket coaxially coupled to the leading wheel, the drive sprocket being configured to receive a rotational
torque from a drive machine.

US Pat. No. 9,556,002

ELEVATOR NOISE MONITORING

OTIS ELEVATOR COMPANY, F...

1. A method, comprising:
receiving, from a portable recording device, multiple recordings of sounds made by an elevator during operation of the elevator,
the multiple recordings generated at different times;

analyzing, by a sound analysis circuit, the multiple recordings generated at the different times to detect changes in an elevator
characteristic over time; and

generating, based on detecting the changes in the elevator characteristic over time, a notification to perform an action on
the elevator.

US Pat. No. 10,138,091

VARIABLE LINEAR MOTOR GAP

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:a hoistway;
an elevator car to travel in the hoistway;
a first motor portion mounted to one of the elevator car and the hoistway, the first motor portion having a first coil and a second coil, the first coil at a first hoistway location, the second coil at a second hoistway location;
a second motor portion mounted to the other of the elevator car and the hoistway, the second motor portion having at least one permanent magnet; and
a gap between the first motor portion and the second motor portion, wherein the gap includes a first gap distance at the first hoistway location and a second gap distance at the second hoistway location, the second gap distance being greater than the first gap distance.

US Pat. No. 9,994,429

HANDRAIL WITH A BUILT-IN RBI

OTIS ELEVATOR COMPANY, F...

1. A system for detecting a defect in at least one wire embedded in a handrail of a passenger conveyor, comprising:a non-contact inspection device embedded in the handrail for inspecting a condition of the wire and transmitting a signal regarding the condition of the wire;
a non-contact power supply device arranged in proximity to the handrail for supplying power wirelessly to the non-contact inspection device from the outside of the handrail; and
a controller arranged outside of the handrail for receiving the signal regarding the condition wirelessly and determining whether there is a defect in the wire;
wherein the non-contact inspection device is configured to measure a resistance of each wire and transmit the resistance to the controller, and the controller is configured to detect a defect in the wires based on the resistance of each wire.

US Pat. No. 9,906,112

ELECTROMAGNETIC PROPULSION SYSTEM HAVING A WIRELESS POWER TRANSFER SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An electromagnetic propulsion system comprising:
a plurality of primary windings;
a permanent magnet arranged to move with respect to the plurality of primary windings;
a secondary winding disposed in a non-moving relationship with the permanent magnet; and
an excitation energy applied to the plurality of primary windings for creating a magnetic field including a base component
and low frequency harmonic components, and wherein the base component substantially contributes toward motion between the
plurality of primary windings and the permanent magnet and the low frequency harmonic components substantially contributes
toward generating an electro-motive force in the secondary winding based on displacement between the plurality of primary
windings and the permanent magnet.

US Pat. No. 9,862,568

ELEVATOR RUN PROFILE MODIFICATION FOR SMOOTH RESCUE

OTIS ELEVATOR COMPANY, F...

1. A method of operating an elevator system, the method comprising:
powering, using a battery, the elevator system when an external power source is unavailable;
controlling, using a controller, a plurality of components of the elevator system, wherein controlling comprises operating
at least one of the battery, an elevator car, a drive unit, and a brake;

determining, using the controller, a run profile of the elevator car in response to a selected deceleration;
operating, using the controller, the elevator car in response to the run profile determined;
determining, using the controller, an actual velocity of the elevator car; and
adjusting, using the controller, the run profile to match the actual velocity when the actual velocity is less than a selected
velocity.

US Pat. No. 9,850,098

POLYGON COMPENSATION COUPLING SYSTEM FOR CHAIN AND SPROCKET DRIVEN SYSTEMS

OTIS ELEVATOR COMPANY, F...

1. Polygon compensation coupling system, the system comprising:
a first rotatable element;
a second rotatable element;
at least one linkage coupling the first rotatable element with the second rotatable element, the linkage comprising:
at least one first coupling element pivotably coupled to the first rotatable element at a position which is radially spaced
apart from the axis of rotation of the first rotatable element;

at least one second coupling element pivotably coupled to the second rotatable element at a position which is radially spaced
apart from the axis of rotation of the second rotatable element;

wherein the first and second coupling elements are pivotably coupled to each other at a hinge point, and
wherein the hinge point is configured to move along a compensation curve varying the coupling between the first rotatable
element and the second rotatable element so that a rotation of the first rotatable element with constant angular velocity
results in a rotation of the second rotatable element with a non-constant, fluctuating angular velocity.

US Pat. No. 9,802,788

ELEVATOR SECURITY SYSTEM INCLUDING A CREDENTIAL TRANSMITTED TO A USER

OTIS ELEVATOR COMPANY, F...

1. An elevator security system for a building comprising:
data relating to a floor that a user may access in said building,
a device storing said data,
a credential transmitted electronically to said user, said credential allowing said user to place said credential in a machine
readable format and use said data to access said floor, and

a first machine reader reading said credential in the machine readable format for querying said device whether said user may
access said floor, said device providing access to an elevator car for transport to said floor if said credential is in agreement
with said data stored in said device,

wherein said user is a first distance from the first machine reader when the credential is transmitted to the user, and the
user is a second distance from the first machine reader when the first machine reader reads the credential, the second distance
being less than the first distance.

US Pat. No. 9,804,612

REGULATED BOOTSTRAP POWER SUPPLY

OTIS ELEVATOR COMPANY, F...

1. A power supply, comprising:
a low side switch;
a high side switch;
a driver that controls operation of the high side switch;
a bootstrap capacitor that supplies power to the driver;
an energy storage portion in parallel with the bootstrap capacitor; and
a voltage regulator in parallel with the bootstrap capacitor for limiting current provided to the bootstrap capacitor and
for regulating a voltage of the bootstrap capacitor.

US Pat. No. 9,731,939

ELEVATOR CORD HEALTH MONITORING

OTIS ELEVATOR COMPANY, F...

11. An elevator system comprising:
an elevator car;
one or more sheaves;
a belt or rope comprising a plurality of wires arranged into a plurality of strands and/or cords for supporting and/or driving
the elevator car; and

a fault detection unit operably connected to the belt or rope, the fault detection unit configured to:
subject the belt or rope to an AC excitation voltage; and
measure an electrical impedance profile of at least a portion of the belt or rope subjected to the AC excitation voltage.

US Pat. No. 9,731,941

BRAKING DEVICE FOR A DOOR OPERATOR

Otis Elevator Company, F...

1. A device for inhibiting closing of an elevator car door that controls entry to an elevator car, said device comprising:
a powered mechanism for closing said door,
a first magnet disposed on a driven portion of said door, and
a second magnet disposed on a portion of said car, wherein said first magnet and said second magnet are permanent magnets,
wherein said first magnet and said second magnet are configured to register with each other as said door moves toward a closed
position, and

wherein, if the first and second magnets are registered with each other, a pole of said first magnet is in close proximity
of a pole of said second magnet such that said first magnet and said second magnet react to each other to inhibit motion of
said door towards the closed position in a condition in which power for the powered mechanism is off.

US Pat. No. 9,725,282

ELEVATOR LOAD BEARING ASSEMBLY INCLUDING DIFFERENT SIZED LOAD BEARING MEMBERS

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
a traction sheave;
an elevator car;
a counterweight;
a load bearing assembly coupling the elevator car and the counterweight, the load bearing assembly including a plurality of
flat belts including at least one flat belt having a different load carrying capacity than at least one other of the flat
belts, the plurality of flat belts supporting a load of the elevator car and the counterweight, the plurality of flat belts
being moved by the drive sheave to cause movement of the elevator car and the counterweight;

a first termination associated with the one flat belt and having a spring for establishing a first tension on the one flat
belt;

a second termination associated with the at least one other flat belt having a spring for establishing a second, different
tension on the at least one other flat belt;

wherein:
the spring of the first termination has a first length when the first tension is established;
the spring of the second termination has a second, shorter length when the second tension is established; and
the second termination includes a spacer member that has a length corresponding to a difference between the first and second
lengths.

US Pat. No. 9,719,569

BRAKE FOR ELECTRIC MOTOR

OTIS ELEVATOR COMPANY, F...

1. A brake, comprising:
a rotor having a plurality of magnets and a plurality of ferromagnetic poles radially disposed thereabout; and
a stator having a plurality of shunts and a plurality of teeth radially disposed thereabout, at least one of the plurality
of shunts and the plurality of teeth being configured to selectively move between an engagement state and a free engagement
state, the teeth being configured to generate magnetic flux with the ferromagnetic poles so as to generate a braking torque
during the engagement state, the shunts being configured to redirect the magnetic flux therethrough and reduce the braking
torque between the teeth and the ferromagnetic poles during the free engagement state; and

an actuator assembly configured to selectively extend the one of the plurality of shunts and teeth relative to the other to
achieve the engagement state, and to retract the one of the plurality of shunts and teeth relative to the other to achieve
the free engagement state.

US Pat. No. 9,663,328

ELEVATOR SYSTEM BELT

OTIS ELEVATOR COMPANY, F...

10. A belt and sheave combination for an elevator system comprising:
an elevator car;
one or more sheaves; and
one or more belts operably connected to the car and interactive with the one or more sheaves for suspending and driving the
elevator car, each belt of the one or more belts including:

a plurality of cords, each cord of the plurality of cords formed from a plurality of wires, the plurality of cords including
one or more inner cords disposed at an innermost portion of the belt relative to a lateral end of the belt and one or more
outer cords disposed laterally outboard of the one or more inner cords, the one or more outer cords having a construction
distinct from the one or more inner cords such that the one or more outer cords have an outer cord flexibility greater than
an inner cord flexibility of the one or more inner cords; and

a jacket substantially retaining the plurality of cords;
wherein the different construction of the one or more outer cords includes the outer cords being formed from wires of a first
diameter, different than a second diameter of wires utilized to form the one or more inner cords.

US Pat. No. 9,561,936

ELEVATOR SYSTEM DOOR FRAME THAT SUPPORTS GUIDE RAILS

Otis Elevator Company, F...

1. An elevator door frame, comprising:
a frame sill member;
a frame header member;
a plurality of frame jamb members between the sill member and the header member;
a door sill member;
a door header member;
door jamb members between the door sill member and the door header member;
a plurality of guide rail brackets supported on at least one of the frame sill member, frame header member or one of the frame
jamb members; and

at least one guide rail section secured in a selected position relative to the door frame by the guide rail brackets, the
at least one guide rail section being distinct from the frame jamb members and the door jamb members.

US Pat. No. 9,556,005

SELF-CLAMPING HANDRAIL DRIVE

OTIS ELEVATOR COMPANY, F...

1. A method for providing a self-clamping handrail drive, comprising:
providing a normal force to the handrail based at least in part on a tension force in the handrail; and
varying the normal force by moving a clamping frame when the tension force increases relative to an initial value;
wherein varying the normal force comprises moving the clamping frame along a clamping curve in a direction of the tension
force when the tension force increases relative to the initial value.

US Pat. No. 9,469,505

SHEET METAL GUIDE RAIL FOR AN ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A guide rail for an elevator system in a hoistway, comprising:
a base connectable with a wall of the hoistway;
a web section connected to and extending from the base, the web section having a web cross-sectional width; and
a tip section disposed at an end of the web section and operably connectable to an elevator car of the elevator system, the
tip section having a tip cross-sectional width greater than the web cross-sectional width;

wherein the base, the web section and the tip section are formed of one or more thicknesses of sheet metal material and configured
such that braking forces applied to the guide rail by a braking mechanism reduce the speed of the elevator car without resulting
in failure of the guide rail;

wherein the tip section includes a tip cavity disposed therein; and
wherein the tip section includes a stiffener disposed in the tip cavity extending along an entire length of the guide rail
to reinforce and provide rigidity to the tip section.

US Pat. No. 10,071,880

LOW PROFILE DRIVE UNIT FOR ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A drive unit for an elevator system, the drive unit comprising:a multilayer, power circuit board;
a first DC link formed in a layer of the power circuit board;
a second DC link formed in a layer of the power circuit board;
a first switch having a first terminal, the first switch mounted to a surface of the power circuit board;
a first via electrically coupling the first terminal to the first DC link;
a second switch having a second terminal, the second switch mounted to the surface of the power circuit board; and
a second via electrically coupling the second terminal to the second DC link;
the first via conducting heat from the first switch to the first DC link;
the second via conducting heat from the second switch to the second DC link.

US Pat. No. 10,051,040

ELEVATOR SYSTEM USING DUAL COMMUNICATION CHANNELS

OTIS ELEVATOR COMPANY, F...

1. An elevator control system, comprising:at least one destination entry fixture coupled to a controller area network (CAN) bus that provides a first communication channel, the at least one destination entry fixture operable to transmit destination information over the CAN bus;
a plurality of elevator car controllers each associated with a respective elevator car, the plurality of elevator car controllers coupled to the CAN bus to receive the destination information;
the plurality of elevator car controllers coupled to a ring network that provides a second communication channel;
a group controller operable to determine an elevator car to be dispatched in response to receiving the destination information;
a security-group bridge configured to provide communications between an outside network and the CAN bus, wherein security information for one or more passengers is provided over the security-group bridge.

US Pat. No. 9,994,423

RESURFACING OF BELT FOR ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A resurfacer for a belt for suspending and/or driving an elevator car of an elevator system comprising:a resurfacing roller having a selected surface roughness;
a heater element to heat the belt to a selected temperature; and
a biasing element to urge the resurfacing roller into contact with the belt, the resurfacing roller applying a selected pressure to the belt;
wherein applying the resurfacing roller to the heated belt at the selected pressure modifies a surface finish of an outer surface of the belt,
wherein the resurfacer is configured to be fixed at a hoistway of the elevator system, the belt passes through the resurfacer.

US Pat. No. 9,985,566

DUAL THREE-PHASE ELECTRICAL MACHINE AND DRIVE WITH NEGLIGIBLE COMMON-MODE NOISE

OTIS ELEVATOR COMPANY, F...

1. A power electronics system, comprising:a power electronics converter configured as a motive drive and to provide pulse-width-modulation; and
a dual-three-phase machine comprising the power electronics converter, a current controller, six phase windings divided into a first and second windings groups, a common-neutral connection connecting the six phase windings, and a common-mode capacitor,
wherein the power electronics converter is a paralleled inverter comprising a first inverter connected to the first windings group and a second inverter connected to the second windings group,
wherein the paralleled inverter is configured to provide a pulse-width-modulation as a motor drive to the six phase windings to generate a zero common-mode pulse width modulation across the first and second windings groups; and
wherein the common-mode capacitor is between the common-neutral connection and a ground,
wherein the common-neutral connection comprises a first neutral connection connecting the first windings group and a second neutral connection, which is separate from the second neutral connection, connecting the second windings group,
wherein the zero common-mode pulse width modulation provided by the paralleled inverter utilizes a reference voltage generated by the current controller and comprises a triangle relationship defined by:
where t1 and t2 are two vectors corresponding to the first and second windings groups, Vref is the reference voltage with a position of angle ?, and Ts is a switching period,wherein a voltage of the common-mode pulse width modulation is zero or negligible due to the triangle relationship,
wherein each winding of the first windings groups corresponds to and is in-phase with a winding of the second windings group.

US Pat. No. 9,926,172

SYSTEMS AND METHODS FOR DETERMINING FIELD ORIENTATION OF MAGNETIC COMPONENTS IN A ROPELESS ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A ropeless elevator system (20) comprising:an elevator car (24);
a hoistway 22 in which the elevator car (24) travels;
a ropeless propulsion system (50), the ropeless propulsion system (50) comprising:
electrical windings (60) energized by a power source (68), the electrical windings (60) affixed to a stationary structure (54), the stationary structure (54) associated with the hoistway (22); and
a magnet (58), the magnet (58) affixed to a moving structure (52), the moving structure (52) associated with the elevator car (24), and interaction between the electrical windings (60) and the magnet (58) generates a thrust force on the elevator car (24) traveling in the hoistway (22); and
an array of Hall effect sensors (81), the array of Hall effect sensors (81) determining a sensed magnetic field, the sensed magnetic field being associated with electrical currents carried by the windings (60) and used to determine a magnetic field orientation of the electrical currents carried by the windings (60) with respect to the magnet (58).

US Pat. No. 9,896,304

SECURITY SYSTEM FOR ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. A method of operating an elevator system comprising:
presenting a credential at a security panel disposed at an elevator system landing of a public area of a building;
opening an electrical contact between the security panel and an elevator control system if the credential is correct; and
placing a call via the elevator control system for an elevator car to the landing once the electrical contact is opened.

US Pat. No. 9,896,309

OBJECT DETECTOR, AND METHOD FOR CONTROLLING A PASSENGER CONVEYOR SYSTEM USING THE SAME

Otis Elevator Company, F...

1. A detector for use in a passenger conveyor system, comprising:
a structured light source operable to project light into a detection area in a predetermined projected pattern;
a structured light detector operable to generate reflected light signals indicative of light reflected back toward the structured
light detector from the detection area;

a controller operable to receive the reflected light signals from the structured light detector;
the controller is operable to process the reflected light signals to determine a reflected pattern;
the controller is operable to compare the reflected pattern and the predetermined projected pattern to generate pattern comparison
information;

the controller is operable to analyze the pattern comparison information to provide depth information about an object in the
detection area; and

the controller is operable to control an operation of the conveyor system based on the depth information.

US Pat. No. 9,878,876

ELEVATOR DEMAND ENTERING DEVICE

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:
a demand entering device that:
receives an elevator destination command for at least one elevator via an interface of the demand entering device comprising
at least one of a keyboard, a keypad, a touchscreen and a touch panel configured to receive the elevator destination command;

receives a request from a user, via the interface of the demand entering device, for:
statistical data regarding use of the at least one elevator, and
field data in connection with a field service, maintenance, repair, or installation activity associated with the at least
one elevator; and

presents to the user, via the interface of the demand entering device, the statistical data and the field data.

US Pat. No. 9,835,216

FRICTION BRAKE ASSEMBLY WITH AN ABRADABLE METAL FOAM BRAKE PAD

Otis Elevator Company, F...

1. A brake assembly, comprising:
a substrate; and
a brake pad comprising abradable cellular metal foam, wherein the brake pad is affixed to the substrate, and extends away
from the substrate to form a brake pad friction surface, and wherein the metal foam consists essentially of at least one carbide
and at least one metal alloy; and

wherein the metal alloy comprises at least one of cobalt, titanium or boron; and
wherein the metal alloy forms a metal alloy matrix which bonds particles of the carbide together.

US Pat. No. 9,815,664

STRANGER PREVENTION FOR ELEVATOR DESTINATION ENTRY SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An elevator taking user management system, comprising:
a detection apparatus, for detecting the number of persons in an elevator waiting area;
a processing module, electrically connected to the detection apparatus and a target floor transport system of the elevator,
wherein the processing module is used for receiving a signal at least indicating the detected number of persons sent by the
detection apparatus, and acquiring the number of persons who have input target floors from the target floor transport system,
and the processing module compares the detected number of persons with the number of persons who have input target floors
at the floor where the detection apparatus is located, and when the detected number of persons is greater than the number
of persons who have input target floors, sends a reminding signal; and

an output apparatus, electrically connected to the processing module, for receiving the reminding signal and presenting the
reminding signal in the elevator waiting area, so as to remind those who do not input target floors to input the target floors.

US Pat. No. 9,815,667

COATED SHEAVE

OTIS ELEVATOR COMPANY, F...

1. A method for making a coated sheave, comprising:
obtaining a sheave comprising a contact surface;
obtaining a fluorinated polymer compound selected from polyurethanes, epoxy polymers, polyesters, polyureas, polyamides, polyimides,
or silicones, where fluorine is chemically or covalently bonded to the polymer; and

coating the sheave contact surface with the fluorinated polymer compound.

US Pat. No. 9,764,925

ELEVATOR SYSTEM INCLUDING A CAR STOP FOR MAINTAINING OVERHEAD CLEARANCE

OTIS ELEVATOR COMPANY, F...

1. A car stop for maintaining a minimum safe working area above an elevator car located in a hoistway, the car stop comprising:
a plurality of leg members, each leg member having a first end configured to be pivotally attached to a top of the elevator
car, and a second end;

a cross member, configured to be secured to the second end of each of the leg members; and
a plurality of mounting brackets, configured to be secured to a machine mount located proximate a top of the hoistway and
secured to a plurality of guide rails,

wherein the plurality of legs are configured to pivot between a first position in which the cross member is proximate the
top of the elevator car and a second position in which the cross member is proximate the plurality of mounting brackets when
the elevator car is proximate a top of the hoistway, and

wherein the car stop physically prohibits upward movement of the elevator car when the plurality of legs are in the second
position and the cross member is proximate the plurality of mounting brackets.

US Pat. No. 9,731,938

COATED ROPE OR BELT FOR ELEVATOR SYSTEMS

OTIS ELEVATOR COMPANY, F...

1. A belt for suspending and/or driving an elevator car, the belt comprising:
a plurality of cords retained in a jacket to form the belt, the belt having an aspect ratio of width to thickness of greater
than one;

at least one cord of the plurality of cords comprising a plurality of filaments that are free of second-order helical structure,
wherein the filaments comprise at least one inner filament and a plurality of outer filaments surrounding the at least one
inner filament, the outer filaments forming a first-order helical structure wherein the at least one inner filament is free
of first-order helical structure;

wherein the at least one inner filament is formed from a polymeric material and the outer filaments are formed from a metallic
material having greater load-bearing strength than the polymeric material.

US Pat. No. 9,725,281

ELEVATOR ROLLER GUIDE

OTIS ELEVATOR COMPANY, F...

1. A vertically moveable elevator cab, comprising:
a top portion comprising a ceiling of the cab;
a bottom portion comprising a floor of the cab;
a plurality of vertically oriented portions each respectively comprising a sidewall of the cab, the side portions respectively
having a side portion length that is at least as long as a distance between the top and bottom portions, at least one of the
side portions comprising a vertically oriented sheet having a vertically extending sheet length at least as long as the side
portion length, the sheet establishing a roller guide support;

a first roller at least partially disposed on a first side of the sheet, an axis of the first roller at least partially passing
through at least one roller support arm extending away from the first side of the sheet, the axis being generally parallel
with another portion of the sheet, wherein the roller support arm is a bent portion of the sheet; and

second and third rollers supported by the sheet such that the second and third rollers are on a second, oppositely facing
side of the sheet with an axis of each of the second and third rollers generally perpendicular to the axis of the first roller,
the axis of each of the second and third rollers always remaining in a single location that is in a fixed position relative
to the sheet,

wherein the first side of the sheet establishes an interior of at least some of the at least one sidewall and the oppositely
facing second side establishes an exterior of at least some of the at least one sidewall.

US Pat. No. 9,701,515

UNDERSLUNG ELEVATOR CAR CONFIGURATION

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car having an integrated cabin and car frame structure including a platform thickness between a floor surface
in the cabin and a lowermost surface on a support beam used for supporting the car beneath the floor surface;

a sheave assembly supported beneath the floor surface, the sheave assembly including a plurality of sheaves and a plurality
of subframe beams, the sheaves and subframe beams fitting within the platform thickness such that the subframe beams and the
sheaves are no lower than the lowermost surface on the support beam, wherein the subframe beams do not directly contact the
elevator car; and

a plurality of isolation members between the sheave assembly and the elevator car, the isolation members isolating vibrations
associated with movement of the sheaves from an interior of the cabin,

wherein the isolation members comprise resilient pads positioned between the subframe beams and a corresponding structural
surface on the elevator car, and

wherein at least one of the subframe beams or the corresponding structural surface on the elevator car includes a recess that
at least partially receives a portion of a corresponding one of the isolation members for limiting movement of the subframe
beams relative to the elevator car in at least two directions.

US Pat. No. 9,670,035

FIRE-RETARDANT BELT

Otis Elevator Company, F...

1. A belt, comprising:
a plurality of lengthwise-extending tension members; and
a jacket substantially retaining the plurality of tension members, the jacket having a first side region, a second side region,
and a center region between the first and second side regions;

wherein the first and second side regions of the jacket are more fire retardant than the center region of the jacket, and
wherein the jacket includes one or more woven fibers.

US Pat. No. 9,630,806

SHEAVE FOR AN ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. A method for constructing an interface between a sheave and a coated belt or rope of an elevator system, comprising:
selecting the sheave such that a work of adhesion between the coated belt or rope and the sheave has a defined relationship
with a work of adhesion threshold to reduce noise;

wherein a sheave surface of the sheave satisfies the following equations:
?=?d+?p; and

Wa=2(?dbelt?dsheave+?pbelt?psheave)
wherein ?, ?d and ?p represent total surface energy, dispersive surface energy, and polar surface energy respectively; and
Wa represents the work of adhesion.

US Pat. No. 9,624,071

ELEVATOR PASSENGER INTERFACE INCLUDING SPECIAL ASSISTANCE FEATURES

OTIS ELEVATOR COMPANY, F...

1. An elevator passenger interface device, comprising:
a touch screen configured to allow a passenger to indicate a request for elevator service by touching the screen;
an assistance button near the touch screen; and
a controller configured to
determine a destination requested by a passenger touching the screen, and
determine whether the assistance button has been manipulated and then to determine a destination requested by a passenger
from a subsequent manipulation of the assistance button

wherein the controller is configured to
determine that the assistance button has been pressed and released,
prompt the passenger to press and hold the assistance button a second time until the passenger hears an audible announcement
of the passenger's desired destination from the device,

cause an audible announcement of a plurality of possible destinations to be provided to the passenger from the device, and
determine the passenger's intended destination based on a timing that the assistance button is released relative to the audible
announcement.

US Pat. No. 9,617,118

ELEVATOR SUSPENSION AND/OR DRIVING ASSEMBLY HAVING AT LEAST ONE TRACTION SURFACE DEFINED BY WEAVE FIBERS

Otis Elevator Company, F...

1. An elevator system, comprising:
an elevator car;
a counterweight; and
at least one elongated elevator load bearing member coupling the elevator car to the counterweight and supporting a load associated
with the elevator car and counterweight, the at least one elongated elevator load bearing member including

tension elements;
weave fibers transverse to the tension elements and woven with the tension elements, the weave fibers defining at least one
traction surface of the load bearing member; and

a coating over the weave fibers, the coating having an exterior surface texture defined at least in part by the weave fibers.

US Pat. No. 9,975,729

ELEVATOR SYSTEM USING DYNAMIC BRAKING

OTIS ELEVATOR COMPANY, F...

1. A system comprising:a motor having a plurality of motor windings;
a plurality of braking switches coupled to the motor windings, the braking switches coupling the motor windings to a common electrical point;
a sensor coupled to the motor, the sensor providing a sensed signal indicative of a parameter of the motor; and
a controller providing a braking signal to the braking switches in response to the sensed signal to selectively control the braking switches to short the motor windings;
wherein the controller compares the sensed signal to a threshold and generates the braking signal in response the sensed signal exceeding the threshold.

US Pat. No. 9,975,735

CAB ISOLATION OF AN ELEVATOR CAR

OTIS ELEVATOR COMPANY, F...

1. An elevator car constructed and arranged to move along a hoistway, the elevator car comprising:a single cab;
a platform disposed below the cab;
a first vertical member extending upward from the platform;
a first flex joint connected to and extending between the platform and the first vertical member;
a crosshead member disposed above and extending over the cab; and
a second flex joint connected to and extending between the first vertical member and the crosshead member.

US Pat. No. 9,950,902

STATOR STRUCTURE FOR SELF-PROPELLED ELEVATOR

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:a hoistway;
an elevator car to travel in the hoistway, the elevator car having permanent magnets mounted thereto;
a stator mounted in the hoistway, the stator coacting with the permanent magnets to control motion of the elevator car in the hoistway, the stator including:
a plurality of modular coil modules, each coil module including stacked coil assemblies, each coil assembly including stacked coil units, each coil unit corresponding to one phase of the stator;
wherein at least one coil unit includes a tab shaped first connector extending along one side of the coil assembly, the first connector for connecting to an upper coil unit of the same phase in an upper adjacent coil assembly.

US Pat. No. 9,932,205

ASYMMETRIC AND STEERED SHEAVES FOR TWISTED MULTI-BELT ELEVATOR SYSTEMS

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:an elevator car disposed in a hoistway;
two or more belts operably connected to the elevator car to drive and/or support the elevator car along the hoistway; and
two or more sheaves over which the two or more belts are routed, each sheave of the two or more sheaves including:
an outer surface rotatable about a central axis; and
a flange disposed at at least one lateral end of the sheave;
the two or more sheaves arranged in sheave groups, each sheave of the sheave group guiding a separate belt of the two or more belts, a first sheave of the sheave group and a second sheave of the sheave group disposed at and configured to rotate about a common shaft, the common shaft configured such that
a first central axis of the first sheave of the sheave group intersects a second central axis of the second sheave of the sheave group at a non-zero sheave angle.

US Pat. No. 9,919,896

DETECTION METHOD FOR ELEVATOR BRAKE MOMENT

OTIS ELEVATOR COMPANY, F...

1. A method for detecting elevator brake moment in an elevator including a controller, a motor, a brake and a frequency converter,
the method comprising:
initiating an automatic detection function;
determining, by the controller, whether the elevator is in an idle state;
in response to the elevator not being in the idle state, continuing to perform the determining until the elevator is in the
idle state;

in response to the elevator being in the idle state, controlling, by the controller, the frequency converter to continuously
output stagewise-changing torque current to the motor while applying the brake and recording a torque at which the motor rotates;

calculating, by the controller, whether the torque at which the motor rotates is larger than a design moment range of the
brake;

in response to the torque at which the motor rotates being larger than a design moment range of the brake, terminating the
automatic detection function and restoring the elevator to normal running;

in response to the torque at which the motor rotates not being larger than the design moment range of the brake, entering
a fault protection state and stopping the elevator from running;

calculating, by the controller, a brake moment decline curve in response to a plurality of recordings of the torque at which
the motor rotates; and

in response to a slope of the brake moment decline curve being larger than a preset slope and the torque at which the motor
rotates being larger than the design moment range of the brake, the controller generating a warning that the brake needs to
be maintained.

US Pat. No. 9,919,897

GOVERNOR FOR CONTROLLING THE SPEED OF A HOISTED OBJECT RELATIVE TO A GUIDE MEMBER

Otis Elevator Company, F...

1. A governor operable to aid in controlling speed of a hoisted object relative to a guide member, the governor comprising:
a housing defining a housing cavity;
a pulley disposed at least partially within the housing cavity;
a belt in contact with the pulley, the belt being operable to rotate the pulley at a rotational speed related to speed of
the hoisted object relative to the guide member;

a first flyweight and a second flyweight, the first and second flyweights being pivotably connected to the pulley, and being
biased towards one another;

wherein at least a portion of the first and second flyweights are operable to move away from the pulley when the rotational
speed of the pulley is increasing toward a predetermined threshold rotational speed; and

wherein the first and second flyweights are operable to contact the housing, and thereby transmit rotational energy to the
housing, when the rotational speed of the pulley is equal to at least the predetermined threshold rotational speed.

US Pat. No. 9,908,743

ADAPTIVE POWER CONTROL FOR ELEVATOR SYSTEM USING POWER PROFILES

OTIS ELEVATOR COMPANY, F...

1. A system for managing power in an elevator system, the system comprising:
an elevator controller;
an elevator car in communication with the controller;
a component associated with the elevator car;
a power management system in communication with the controller; and
a database in communication with the power management system, the database including a power profile; wherein the power management
system provides power commands to the elevator controller to enter a power savings mode in response to the power profile,
the controller sending a power off signal to the component in response to the power command;

the power profile provides graded power savings by identifying a first component to power off after a first time period and
a second component to power off after a second time period, the second time period longer than the first time period.

US Pat. No. 9,890,016

POSITION RECOVERY VIA DUMMY LANDING PATTERNS

OTIS ELEVATOR COMPANY, F...

18. A position determining system including:
a plurality of first position indicators;
a plurality of second position indicators, each of the plurality of second position indicators being mounted at a predetermined
vertical position between various of the first position indicators; and

a sensor, movable relative to the plurality of first position indicators and the plurality of second position indicators,
the sensor being configured to determine when it is adjacent one of the plurality of first position indicators or one of the
plurality of second position indicators,

wherein the plurality of first position indicators and the plurality of second position indicators are positioned to form
a sequence of unique patterns.

US Pat. No. 9,828,216

CONNECTOR FOR INSPECTION SYSTEM OF ELEVATOR TENSION MEMBER

OTIS ELEVATOR COMPANY, F...

1. An electrical inspection system for an elevator load bearing member comprising:
an electrically conductive, low resistance wrap disposed at the load bearing member, and uniformly contacting the load bearing
member around a circumference of the load bearing member; and

an inspection unit configured to apply an electrical current through the load bearing member and determine an electrical resistance
of the load bearing member;

wherein the inspection unit is electrically connected to the load bearing member at the wrap to distribute electrical current
uniformly through the load bearing member.

US Pat. No. 9,799,156

CONTROLLING TRAFFIC WITHOUT INTEGRATING WITH A SECURITY VENDOR

OTIS ELEVATOR COMPANY, F...

1. An apparatus comprising:
at least one processor; and
memory having instructions stored thereon that, when executed by the at least one processor, cause the apparatus to:
receive a rule pertaining to access to a floor of a building,
receive a request to access the floor of the building, and
grant access to the floor based on a determination that the rule indicates that access to the floor should be granted without
determining an identity of a requester;

wherein the rule is based on an identification of an originating floor and an identification of a destination floor.

US Pat. No. 9,708,157

CONTROLLING SPEED OF AN ELEVATOR USING A SPEED REDUCING SWITCH AND GOVERNOR

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:
an elevator car;
a speed governor adapted to trip when a speed of the elevator car reaches a second speed corresponding to an electrical tripping
point; and

a control system for controlling operation of the elevator car the control system providing a speed reducing switch adapted
to trip when the speed of the elevator car reaches a first speed corresponding to a software tripping point of the speed reducing
switch, the first speed being lower than the second speed.

US Pat. No. 9,643,815

ADJUSTABLE SAFETY BRAKE

OTIS ELEVATOR COMPANY, F...

1. An elevator safety comprising:
a first brake member having a braking surface for engaging a rail;
a block, the first brake member secured to the block;
a plurality of shims located between the first brake member and the block to control a gap between the first brake member
and the block, the plurality of shims being positioned in the gap between the first brake member and the block;

the first brake member having grooves on a back surface, the back surface opposite the braking surface;
the plurality of shims being positioned in the grooves;
a first adjustment control device for adjusting the position of the first brake member relative to the block along an axis
normal to a braking surface of the first brake member; and

a second adjustment control device for changing the position of the plurality of shims relative to the first brake member
along an axis parallel to a braking surface of the first brake member, the second adjustment control device moving the plurality
of shims from a location entirely within the grooves to a position partially within the grooves.

US Pat. No. 9,561,934

ELEVATOR SYSTEM WITH GUIDE RAIL BRACKET

Otis Elevator Company, F...

1. A door frame assembly useful in an elevator system, comprising:
a plurality of door frame members including a header, a sill and jambs, the door frame members being configured to be located
in a desired position along a hoistway; and

at least one guide rail bracket supported by at least one of the door frame members, the guide rail bracket being moveable
relative to the at least one of the door frame members between a handling position in which at least a base of the guide rail
bracket is generally parallel with at least one of the header or the sill and a deployed position in which at least the base
of the guide rail bracket is generally perpendicular to the at least one of the header or the sill, the at least one guide
rail bracket being situated for facilitating installing a guide rail in the elevator system in the deployed position.

US Pat. No. 10,059,566

CONNECTING CARS IN A MULTICAR ELEVATOR SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An elevator system comprising:a first hoistway having a shuttle section where no floors are serviced and serviced floors;
a second hoistway having a shuttle section where no floors are serviced and serviced floors;
a first elevator car;
a second elevator car;
a coupler physically connecting the first elevator car and the second elevator car during travel in the shuttle section;
an upper transfer station for transferring at least one of the first elevator car and the second elevator car from the first hoistway to the second hoistway;
a lower transfer station for transferring at least one of the first elevator car and the second elevator car from the second hoistway to the first hoistway;
wherein the first elevator car and the second elevator car are decoupled for servicing the serviced floors.

US Pat. No. 9,998,031

PWM CONTROLLED NEUTRAL POINT CLAMPED MULTILEVEL CONVERTER

OTIS ELEVATOR COMPANY, F...

1. A neutral point clamped, multilevel level converter, comprising:a DC voltage link;
a first capacitor coupling one side of the DC link to a neutral point;
a second capacitor coupling another side of the DC link to the neutral point;
a plurality of phase legs, each phase leg including devices, the devices including clamping diodes and switches, each phase leg coupled to an AC node; and
a controller generating a PWM signal to control the switches, the controller providing one of thermal balance across the devices and neutral point current balance in response to a thermal balance enable signal.

US Pat. No. 9,960,786

ENCODER RESOLUTION REDUCTION

OTIS ELEVATOR COMPANY, F...

1. A method comprising:receiving, by a device, two channels associated with an output of an encoder;
executing, by the device, a first algorithm to detect a direction of movement of an entity the encoder is applied to based on the two channels;
executing, by the device, a second algorithm to generate two channels with a reduced resolution relative to the two channels associated with the output of the encoder, the two channels with the reduced resolution comprising the detected direction of movement; and
outputting, by the device, the two channels with the reduced resolution.

US Pat. No. 9,932,204

DRIVE UNIT FOR MULTIPHASE PERMANENT MAGNET SYNCHRONOUS MOTOR

OTIS ELEVATOR COMPANY, F...

1. A conveyance system comprising:a car;
a machine for imparting motion to the car, the machine including a stator and a rotor, the stator including 12*k stator teeth, the rotor including 11*k rotor poles, wherein k is a natural even number, the machine including windings located at the stator teeth, the windings arranged in 6 phases; and
a drive unit for providing drive signals to the machine, the drive unit including a plurality of drives, the number of drives being an integer multiple of 2;
wherein the drives include a first drive and a second drive, the first drive generating drive signals of a first phase and the second drive generating drive signals of a second phase.

US Pat. No. 9,908,746

ELEVATOR SYSTEM SOUND REDUCING ASSEMBLY AND METHOD

OTIS ELEVATOR COMPANY, F...

1. An elevator system sound reducing assembly comprising:
an elevator car moveably disposed in an elevator shaft;
a counterweight moveably disposed in the elevator shaft, the counterweight operatively coupled to and guided along a counterweight
frame; and

a barrier located at a height of the elevator shaft that corresponds to passage of the elevator car and the counterweight
relative to each other, the barrier disposed between the counterweight and the elevator car upon passage of the elevator car
and the counterweight, wherein the barrier is directly coupled to the counterweight frame.

US Pat. No. 9,701,517

METHODS AND APPARATUSES FOR APPLYING A SUBSTRATE ONTO AN ELEVATOR SHEAVE

Otis Elevator Company, F...

1. A method for applying a substrate onto an elevator sheave that engages with an elevator tension member, the method comprising:
positioning a substrate applicator adjacent to the sheave, wherein the substrate is engaged with the applicator and includes
an adhesive backing;

disposing an end of the substrate between the sheave and the tension member at a first end of a sheave-member interface; and
applying the substrate to the sheave by rotating the sheave, and by attaching the substrate to the sheave with the adhesive
backing during the rotation of the sheave.

US Pat. No. 10,135,299

ELEVATOR WIRELESS POWER TRANSFER SYSTEM

OTIS ELEVATOR COMPANY, F...

1. An elevator system, comprising:an elevator car disposed in and arranged to move along a hoistway extending in an axial direction;
a secondary resonant coil mounted to the elevator car and configured to get induced an electro-motive force and output a voltage or current;
a plurality of primary resonant coils distributed along the hoistway and configured to transmit power to the secondary resonant coil when a primary resonant coil of the plurality of resonant coils is adjacent to the secondary resonant coil and is selectively energized;
a control system configured to select and energize the plurality of primary resonant coils, the control system including a plurality of switches with each one of the plurality of switches being associated with a respective one of the plurality of primary resonant coils, and wherein the plurality of switches selectively close to energize a selected one of the plurality of primary resonant coils associated with a location of the elevator car; and
a plurality of permanent magnets carried by the elevator car, and wherein the plurality of primary resonant coils are configured to sequentially propel the elevator car in the hoistway when proximate to the plurality of permanent magnets.