US Pat. No. 9,650,780

HANGER BRACKET

MITEK HOLDINGS, INC., Wi...

1. A hanger bracket for mounting a skewed beam at a junction of two adjacent beams, comprising;
a supporting section configured to support the skewed beam;
fixing flanges substantially perpendicular to the supporting section configured for attaching the bracket to the adjacent
beams along surfaces of the fixing flanges positioned to engage respective ones of the adjacent beams when attached thereto,
the surfaces defining planes that are non-parallel and non-coincident with each other, and holes in each of the fixing flanges,
the holes extending through the planes of the fixing flanges;

reinforcing faces located between the supporting section and each of the fixing flanges, wherein the reinforcing faces are
inclined relative to the supporting section and fixing flanges, the reinforcing faces being inclined at an angle between 30
and 60 degrees relative to the supporting section; and holes in at least one of the supporting section and the reinforcing
faces configured to receive fasteners to secure the skewed beam to the hanger bracket.

US Pat. No. 9,506,239

GUSSET PLATE CONNECTION IN BEARING OF BEAM TO COLUMN

MITEK HOLDINGS, INC., Wi...

1. A joint connection structure of a building framework comprising:
a column assembly including a column having a longitudinal axis, a pair of gusset plates connected to the column on opposite
sides of the column and extending laterally outward from the column and bearing elements operatively connected to the gusset
plate and projecting from the gusset plate, the bearing elements of the column assembly each having an exterior bearing engagement
surface; and

a beam assembly including a beam having a longitudinal axis, upper and lower flanges, an end portion received between the
gusset plates and at least one bearing element operatively connected to the beam and projecting from the beam, the bearing
element of the beam assembly having an exterior bearing engagement surface;

the bearing elements of the column assembly and the bearing element of the beam assembly being positioned with respect to
each other for engagement of the exterior bearing engagement surface of the bearing elements of the column assembly with the
exterior engagement bearing surface of the bearing element of the beam assembly to prevent movement of the beam assembly relative
to the column assembly in a direction along the longitudinal axis of the beam, wherein the exterior bearing engagement surface
of one of said bearing elements of the column assembly opposes the exterior bearing engagement surface of the bearing element
of the beam assembly along the longitudinal axis of the beam and prevents relative movement between the beam assembly and
column assembly in a direction along the longitudinal axis of the beam through bearing engagement of the exterior bearing
engagement surface of said one of the bearing elements of the column assembly with the exterior bearing engagement surface
of the bearing element of the beam assembly.

US Pat. No. 10,144,059

CONTINUOUS CASTING OF LEAD ALLOY STRIP FOR HEAVY DUTY BATTERY ELECTRODES

MITEK HOLDINGS, INC., Wi...

1. A method of making an apparatus for continuously casting a lead alloy strip, the method comprising:providing a drum having an aluminum outer circumferential casting surface;
abrading the outer circumferential casting surface of the drum with an angular abrading medium thereby wearing away material from the aluminum outer circumferential casting surface of the drum to create a coarse, irregular, and non-smooth abraded casting surface configured to reduce the rate of heat transfer and slow cooling of the lead alloy strip cast on the abraded casting surface.

US Pat. No. 9,409,309

OBSTRUCTION DETECTION DEVICE

MITEK HOLDINGS, INC., Wi...

1. An obstruction detection device for use with a truss fabrication system including a truss assembly table having spaced
accessways, a controller, and a gantry press mounted on the truss assembly table for movement relative to the truss assembly
table, the obstruction detection device comprising:
a support structure configured for attachment to the truss assembly table having spaced accessways for movement relative to
the truss assembly table;

an obstruction sensor mounted on the support structure and configured to detect obstructions in the spaced accessways of the
truss assembly table, the obstruction sensor having an activated state and a deactivated state; and

a control system operatively connected to the obstruction sensor to activate and deactivate the obstruction sensor in response
to a position of the obstruction sensor relative to the spaced accessways, wherein the control system activates the obstruction
sensor when the obstruction sensor is aligned with one of the spaced accessways of the truss assembly table so that the obstruction
sensor can detect obstruction in the spaced accessway and signal the controller to stop the gantry press of the truss fabrication
system if an obstruction is detected, and wherein the control system deactivates the obstruction sensor when the obstruction
sensor is out of alignment with the spaced accessways of the truss assembly table to prevent the obstruction sensor from stopping
the gantry press of the truss fabrication system.

US Pat. No. 9,421,607

CONTINUOUS CASTING OF LEAD ALLOY STRIP FOR HEAVY DUTY BATTERY ELECTRODES

MITEK HOLDINGS, INC., Wi...

20. An apparatus for continuously casting a lead alloy strip, the apparatus comprising:
a tundish having a bottom, opposed sidewalls, and an open front;
a lip insert configured for attachment to the tundish, the lip insert having a floor, opposed sidewalls, and an open front,
the lip insert and the tundish being configured to contain molten lead alloy for casting a lead alloy strip;

a primary rotatable drum configured to rotate about an axis;
a casting surface on the primary rotatable drum configured to be moved upwardly adjacent the lip insert open front and the
tundish open front for depositing molten lead alloy from the tundish and the lip insert onto the casting surface to cast a
lead alloy strip;

a secondary rotatable drum positioned adjacent the primary rotatable drum, the lip insert and the secondary rotatable drum
being disposed on opposite sides of a vertical plane including the axis of the primary rotatable drum; and

a scraper plate disposed adjacent a nip of the secondary rotatable drum with the primary rotatable drum for peeling the lead
alloy strip off of the primary rotatable drum.

US Pat. No. 9,605,868

FAN ARRAY BACKFLOW PREVENTER

MITEK HOLDINGS, INC., Wi...

1. A backflow preventer for use in an air handling system including at least one fan having an inlet and an outlet for drawing
air from an inlet area and expelling air into a discharge area, the backflow preventer comprising:
a main body having a top wall, a bottom wall, and opposed side walls extending between the top and bottom walls, the main
body defining an open front end and an open rear end and adapted for attachment to the fan of the air handling system adjacent
the inlet of the fan such that air flowing into the fan inlet must first pass through the main body; and

doors attached to the main body and configured for movement between an open position in which air is permitted to enter through
the open front end to flow toward the open rear end and a closed position in which the doors block the open front end and
air is prevented from entering through the open front end to flow toward the open rear end, the doors being movable between
the open position and the closed position by a pressure differential between the inlet area and the discharge area, the attachment
of the doors to the main body being configured so that when the main body is mounted on the at least one fan, the doors are
not biased toward the closed position when the fan is off.

US Pat. No. 10,094,103

GUSSET PLATE CONNECTION OF BEAM TO COLUMN

MITEK HOLDINGS, INC., Wi...

1. A prefabricated column assembly comprising:a column having a length and a longitudinal axis extending along the column's length, the column including flanges and a web extending between the flanges;
a pair of gusset plates each including opposite major surfaces and edge surfaces extending between the major surfaces, the major surfaces having larger surface areas than the edge surfaces, the major surfaces of the gusset plates extending parallel to the longitudinal axis of the column, across the column and laterally outward from the column, and configured for receiving a beam therebetween with the major surfaces of the gusset plates on horizontally opposite sides of flanges of the beam to connect the beam to the column;
bolts attaching the gusset plates to the column on opposite sides of the column, the bolts extending parallel to the flanges of the column; and
a plurality of first connecting members separately formed from the column and the gusset plates and attached directly to the flanges of the column, the first connecting members each having a vertically extending plate with bolt holes for receiving some of said bolts therein, each of said plurality of first connecting members being mounted on only respective ones of the flanges, said plurality of first connecting members attaching only one of said pair of gusset plates to the column;
wherein the flanges of the column each comprise a pair of side edges and an outwardly facing surface extending between the side edges, each of said plurality first connecting members engaging the outwardly facing surface extending between the side edges of a respective one of the flanges such that each vertically extending plate extends away from both flanges of the column.

US Pat. No. 9,863,649

DUAL BYPASS DIRECT FIRED HEATING SYSTEM WITH PRESSURE CONTROL

MITEK HOLDINGS, INC., Wi...

1. A heating system for use in conditioning air in a building by supplying air to a duct system of the building, the heating
system comprising:
an enclosure having an outside air opening for drawing outside air into the enclosure and a return air opening for drawing
return air from within the building into the enclosure;

a burner box positioned in the enclosure adjacent the outside air opening such that air flowing into the enclosure through
the outside air opening must pass through the burner box, the burner box comprising a direct fired burner for heating at least
a portion of air flowing through the outside air opening and flowing over the direct fired burner, the direct fired burner
being configured for optimized operation at a predetermined target pressure difference across the burner, the burner box comprising:

a main body defining an open upstream end and an open downstream end, the open upstream end being divided into a first bypass
opening and a second bypass opening spaced from the first bypass opening by a burner opening, the main body further including:

a mixing chamber adjacent the open downstream end; a first bypass passage extending from the first bypass opening to the mixing
chamber;

a second bypass passage extending from the second bypass opening to the mixing chamber; and
a burner passage extending from the burner opening to the mixing chamber, the direct fired burner being positioned in the
burner passage, such that the burner air flow is drawn into the main body from the outside environment through the burner
opening and directed through the burner passage over the direct fired burner for heating,
wherein air drawn into the main body from the outside environment through the first and second bypass passages is shunted
around the burner passage and converges with the heated air from the burner passage in the mixing chamber downstream from
the burner passage before exiting the main body through the open downstream end of the main body, the return air opening of
the enclosure being positioned outside the main body, the open downstream end of the main body lying within an orthogonal
projection of the return air opening projecting orthogonally from the return air opening through the enclosure such that mixed
air exiting the mixing chamber through the open downstream end of the main body of the burner box is mixed with the return
air entering the enclosure.

US Pat. No. 10,113,768

INSULATED PANEL ASSEMBLY

MITEK HOLDINGS, INC., Wi...

1. An insulated panel assembly for use in forming an air handling enclosure, the insulated panel assembly comprising:a first panel member having a base portion, first and second side portions projecting transversely from the base portion, and first and second side mounting flanges extending projecting transversely from the respective first and second side portions;
a second panel member having a base portion, first and second side portions projecting transversely from the base portion, and first and second side mounting flanges projecting transversely from the respective first and second side portions; and
a double-sided adhesive strip attaching the first and second side mounting flanges of the first panel member to the respective first and second side mounting flanges of the second panel member, the first and second panel members being arranged with respect to each other so that at least a portion of the second panel member extends beyond a corresponding portion of the first panel member;
the first and second panel members defining and fully enclosing a cavity, the insulated panel assembly further comprising a thermally insulating core disposed in the cavity, a portion of the thermally insulated core extending laterally beyond the first side portion of the first panel member;
wherein the insulated panel assembly is constructed to be arranged in a side-by-side, overlapping relationship with another insulated panel assembly having the same construction for use in forming a wall of the air handling enclosure.

US Pat. No. 10,177,369

METHOD AND APPARATUS FOR CONTINUOUSLY MIXING BATTERY PASTES

MITEK HOLDINGS, INC., Wi...

1. A method for continuously producing battery paste for use in a process for continuous production of pasted battery plates comprising feeding particulate lead oxide to an elongated reactor mixer having a plurality of mixing paddles and conveying paddles in series wherein the mixing paddles are structurally distinct from the conveying paddles, continuously injecting water and sulphuric acid sequentially to the lead oxide in the reactor mixer, rapidly mixing and reacting the sulphuric acid with the wetted particulate lead oxide to form a mixture for passage through the elongated reactor mixer for a controlled retention time in the reactor mixer under predetermined mixing and conveying conditions whereby the mixture is subjected to a ratio of mixing paddles to conveying paddles in the reactor mixer of about 65:35 to 80:20, and controlling the temperature of the mixture of lead oxide, water and sulphuric acid as it passes through the elongated reactor along the length of the reactor mixer for a maximum exit temperature of a discharge product in the range of above 60° C. to about 80° C., discharging the battery paste from the elongated reactor mixer for application to battery grids in a state in which the size of tribasic lead sulphate crystals in the battery paste is 5 microns or less, whereby the rate of reaction of the sulphuric acid with the lead oxide for the production of lead sulphate and the particle size, homogeneity, consistency, density, plasticity and porosity of the reaction product are controlled, wherein the 5 micron or less tribasic lead sulphate crystals in the discharged battery paste are produced by the mixing and reacting of the sulphric acid with the wetted particulate lead oxide to grow the 5 micron or less tribasic lead sulphate crystals in the reactor mixer prior to the mixture being discharged from the reactor mixer and cured.

US Pat. No. 10,179,991

FORMING COLUMN ASSEMBLIES FOR MOMENT RESISTING BI-AXIAL BEAM-TO-COLUMN JOINT CONNECTIONS

MITEK HOLDINGS, INC., Wi...

1. A method of fabricating a column assembly including a hollow tubular column and connected gusset plates configured to form bi-axial moment connections with beams in a building framework, the method comprising using the column as a jig to locate gusset plates for assembling a gusset plate assembly of the gusset plates, connecting at least some of the gusset plates located by the column to the column, connecting at least some of the gusset plates to each other to form the gusset plate assembly, the connection of the gusset plates to each other being separate from the connection of the gusset plates to the column, wherein the step of using the column as a jig comprises orienting the column in a horizontal position, connecting a first of the gusset plates to the column with the first gusset plate in a horizontal position, rotating the column about its longitudinal axis and connecting a second of the gusset plates to the column with the second gusset plate in a horizontal position.

US Pat. No. 10,214,897

HANGER BRACKET

MITEK HOLDINGS, INC., Wi...

1. A hanger bracket for mounting a skewed beam at a junction of two adjacent beams, comprising;a supporting section configured to support the skewed beam;
fixing flanges substantially perpendicular to the supporting section configured for attaching the bracket to the adjacent beams, the fixing flanges including surfaces and edges, the surfaces extending between the edges, the surfaces of the fixing flanges being positioned to engage respective ones of the adjacent beams when attached thereto, the surfaces lying in planes that are non-parallel and non-coincident with each other;
reinforcing faces located between the supporting section and each of the fixing flanges, the reinforcing faces being inclined relative to the supporting section and fixing flanges; and holes in at least one of the supporting section and the reinforcing faces configured to receive fasteners to secure the skewed beam to the hanger bracket.

US Pat. No. 10,229,227

DESIGN-MODEL MANAGEMENT USING A GEOMETRIC CRITERION

MITEK HOLDINGS, INC., Wi...

1. A computer-implemented method comprising:correlating a group of geometric objects to a set of spatial zones associated with an architectural layout, wherein at least one of the set of spatial zones includes a set of polytopes or the group of geometric objects includes a group of polytopes;
executing, by a design-model management application of a host device, a detection operation to detect a first geometric object of the group of geometric objects, wherein the first geometric object has a first geometric object size value;
executing, by the design-model management application of the host device, a conversion operation to convert the first geometric object by comparing the first geometric object size value with a threshold geometric object size value;
executing, by the design-model management application of the host device, an identification operation to identify for the first geometric object, based on proximity, a group of conversion candidates of the group of geometric objects;
executing, by the design-model management application of the host device, a determination operation to determine a second geometric object using a geometric criterion based on the first geometric object and the group of conversion candidates; and,
executing, by the design-model management application of the host device, an establishment operation to establish a design-model of the architectural layout using the second geometric object.

US Pat. No. 10,302,323

BALANCING DISCHARGE AIRFLOW DURING AIR HANDLING SYSTEM OPERATION

MITEK HOLDINGS, INC., Wi...

1. An air handling system comprising:a first fan array coupled to a shared inlet area and a first discharge area, the first fan array comprising at least one fan for drawing air from the shared inlet area and expelling air into the first discharge area;
a second fan array coupled to the shared inlet area and a second discharge area, the second fan array comprising at least one fan for drawing air from the shared inlet area and expelling air into the second discharge area;
a first controller associated with the first fan array, wherein the first controller is configured to monitor an airflow of the at least one fan of the first fan array and control a fan speed thereof;
a second controller associated with the second fan array, wherein the second controller is configured to monitor an airflow of the at least one fan of the second fan array and control a fan speed thereof; and
a control network communicatively coupling the first controller and the second controller, wherein the first controller is configured to monitor the fan speed and the airflow of the at least one fan of the second fan array via the control network to balance the airflow of the at least one fan of the first fan array therewith by adjusting the fan speed of the at least one fan of the first fan array, and wherein the first controller comprises a processor and a processor-readable storage device configured to store processor-executable instructions comprising an algorithm to monitor the fan speed and the airflow of the at least one fan of the second fan array via the control network to balance the airflow of the at least one fan of the first fan array therewith by adjusting the fan speed of the at least one fan of the first fan array;
wherein the algorithm comprises:
decreasing a fan speed setpoint of the at least one fan of the first fan array by a predetermined percentage of the fan speed when the airflow of the at least one fan of the first fan array is greater than a sum of an airflow setpoint and an airflow deadband of the first fan array; and
increasing the fan speed setpoint of the at least one fan of the first fan array by the predetermined percentage when:
the airflow of the at least one fan of the first fan array is less than a difference between the airflow setpoint and the airflow deadband of the first fan array,
at least one of:
the airflow of the at least one fan of the first fan array is greater than a difference between an airflow of the at least one fan of the second fan array and an airflow deadband thereof,
the airflow of the at least one fan of the second fan array is less than the airflow setpoint, and
a fan speed of the at least one fan of the second fan array is less than a fan speed deadband thereof away from a maximum fan speed thereof, and
a fan speed of the at least one fan of the first fan array is less than a fan speed deadband thereof away from a maximum fan speed thereof.

US Pat. No. 10,274,221

HEAT EXCHANGER

MITEK HOLDINGS, INC., Wi...

1. A heat exchanger for exchanging heat between first and second air streams respectively flowing through first and second ducts of a ventilation system that are spaced apart along a horizontal axis, the heat exchanger comprising:a plurality of heat pipes, each heat pipe having first and second end portions spaced apart along a heat pipe axis and top and bottom legs extending along the heat pipe axis between the first and second end portions and having first and second end sections connected to the first and second end portions, respectively; and
a frame mounting the heat pipes, the frame being configured for installation in the ventilation system in a horizontal orientation in which the frame fixes each heat pipe so that the first end sections of the top and bottom legs are received in the first duct for thermal communication with the first air stream, the second end sections of the top and bottom legs are received in the second duct for thermal communication with the second air stream, and the heat pipe axis is inclined with respect to the horizontal axis such that the first end sections are positioned above the second end sections.