US Pat. No. 9,945,548

RECESSED LIGHTING UNIT WITH WIRE CONNECTOR

DMF, Inc., Carson, CA (U...

1. A recessed lighting unit comprising:a housing having an outer surface, an inner surface, and a bottom opening that is open to a cavity, the cavity being defined in part by an inner surface of the housing,
wherein the housing has a through-duct formed therein, the through-duct having a first through-duct opening in the outer surface that leads to a second through-duct opening in the inner surface,
wherein the through-duct has an upper portion and a lower portion, between the first through-duct opening and the second through-duct opening, and
the lower portion forms an elbow between the upper portion and the second through-duct opening.

US Pat. No. 9,673,597

WALL CLAMPING JUNCTION BOX

DMF Inc., Carson, CA (US...

1. A wall clamping box for installation between wall edges of an opening defined in a wall, comprising:
a housing having a plurality of side walls between a top and a bottom;
a pair of outer flanges exterior to an opposite two of said side walls;
a pair of slots in said opposite two of said side walls;
a clamping bracket slidable in each of said slots; and
a pair of clamping screws captive to said housing and threaded to said clamping brackets, said screws rotatable for drawing
said brackets along said slots from an initial elevated position towards said outer flanges;

said brackets moving through said slots from an initial retracted position in said initial elevated position to an extended
position responsive to rotation of said screws;

such that a pair of said wall edges adjacent to said side walls is clamped between the extended brackets and said outer flanges
thereby fastening said box to said wall.

US Pat. No. 10,244,607

DAYLIGHT HARVESTING LIGHT FIXTURE AND CONTROL SYSTEM FOR SAME

DMF Inc., Carson, CA (US...

1. An apparatus for controlling a lamp comprising a lamp housing defining an aperture, an electrically powered light source mounted in the housing for illuminating a space through the aperture, a power supply that provides power for the light source, and a photosensor in the housing that is arranged for sensing illumination in the space through the aperture, the apparatus comprising:a switch connected in a circuit path with the light source and the power supply, the switch being arranged to controllably interrupt and restore power to the light source from the power supply;
a controller coupled to the switch and to the photosensor, wherein the controller is adapted to cause the switch to interrupt power to the light source for a dark interval and to measure an output of the photosensor during the dark interval, the controller further being adapted to control an amount of illumination from the light source based on the measured output; and
a resistor in an output path of the photosensor, wherein the resistor is configured to limit a duration of the dark interval.

US Pat. No. 9,404,639

RECESSED LIGHTING ASSEMBLY WITH INTEGRATED INTERFACE MODULE

DMF, Inc., Carson, CA (U...

1. A compact recessed lighting system, comprising:
a light source module for emitting light;
a set of electrical contacts for contacting electrical leads on the light source module to provide electricity from a power
source to the light source module; and

an integrated interface module for supporting the set of electrical contacts and the light source module, wherein the electrical
contacts are coupled to the integrated interface module such that the electrical contacts apply pressure to the electrical
leads of the light source module.

US Pat. No. 10,616,968

METHODS AND APPARATUS FOR TRIAC-BASED DIMMING OF LEDS

DMF. Inc., Carson, CA (U...

1. An LED driver to increase or reduce light output from an LED light source in response to adjustment of a triac-based dimmer coupled to the LED driver, the LED driver comprising:a rectifier to provide a rectified voltage based on a dimmer output of the triac-based dimmer;
a power converter, coupled to the rectifier, to provide output power for the LED light source based at least in part on the rectified voltage; and
an impedance generation circuit, coupled to the power converter, to generate a voltage-controlled resistive-like impedance to provide an adaptive holding current for the triac-based dimmer, wherein the adaptive holding current significantly facilitates reduction in the light output of the LED light source, in response to the adjustment of the triac-based dimmer, to less than 5% of a full power light output of the LED light source.

US Pat. No. 9,854,642

DAYLIGHT HARVESTING LIGHT FIXTURE AND CONTROL SYSTEM FOR SAME

DMF, INC., Carson, CA (U...

1. An electric lamp comprising a lamp housing defining an aperture, an electrically powered light source mounted in said housing
for illuminating a space through said aperture, a power supply for powering said light source, and a photosensor in said housing
arranged for sensing illumination in said space through said aperture;
a switch connected for interrupting and restoring electrical power to said light source to cause a dark interval of duration
imperceptible to the human eye;

circuit means connected to said photosensor and cooperative with said switch means for deriving an ambient illumination signal
during said dark interval representative of existing illumination of said space free of contribution from said light source;

processor means receiving said ambient illumination signal for estimating a supplemental light output requirement from said
light source which in combination with said existing illumination suffices to raise total illumination of said space to a
target illumination level; and

power control means responsive to said processor means for restoring power to said light source at an adjusted power level
for producing said supplemental light output.

US Pat. No. 10,072,805

RECESSED LIGHTING UNIT WITH UNIVERSAL ADAPTER

DMF, INC., Carson, CA (U...

1. A recessed lighting unit for mounting behind a ceiling or a wall comprising:a thermally conductive housing having a trim portion, wherein the trim portion has an outer periphery and an inner periphery, wherein the housing extends rearward and inward from the inner periphery of the trim portion and forms an intermediate portion, wherein the housing extends rearward and inward from the intermediate portion and forms a base;
a light source module being attached to the base and positioned between a bottom of the base and a front-most point of the trim portion;
an optical plate attached to the intermediate portion, the light source module to illuminate a back face of the optical plate, wherein an outer periphery of the optical plate conforms to an outer periphery of the intermediate portion so that a space between the optical plate and the base is enclosed; and
a plurality of locking members, for engaging a universal adapter, that are directly formed on the intermediate portion and extend rearward from the intermediate portion of the housing.

US Pat. No. 10,563,850

OUTER CASING FOR A RECESSED LIGHTING FIXTURE

DMF, Inc., Carson, CA (U...

1. A recessed lighting fixture comprising:an outer casing for housing a) a light source module for emitting light and b) a driver for powering the light source module to emit light, wherein the outer casing has a base end joined to one end of a side wall, and an inner surface of the base end and an inner surface of the side wall define a cavity, and wherein the side wall of the outer casing has another end that defines an opening of the cavity;
a trim for covering an opening in a ceiling or a wall behind which the outer casing is installed;
a mounting mechanism to couple the side wall of the outer casing to a hangar bar whose length is adjustable along a first direction, wherein the mounting mechanism allows a position of the outer casing to be adjusted relative to the hangar bar in a second direction substantially perpendicular to the first direction;
a ring having a flat portion and attached to the side wall of the outer casing, the ring having a plurality of holes formed in the flat portion thereof, each hole of the plurality of holes to receive a corresponding fastener for securing a unified casting to the ring, the unified casting housing the driver and the light source module together with a reflector and a lens as a single unit; and
a plurality of wire connectors within the outer casing to join a first plurality of wires, which carry electrical power with at least one of 120 VAC or 277 VAC and that extend into the casing to deliver the electrical power from a circuit breaker or wall switch, to a second plurality of wires extending out of the driver,
wherein the outer casing serves as both a junction box to house the plurality of wire connectors and a luminaire enclosure,
wherein the trim has a) a trim base with an outer surface and b) a flange extending outwardly from the outer surface of the trim base, and
wherein when the trim base is positioned inside the cavity of the outer casing the flange lies against a front face of the ceiling or wall behind which the outer casing is installed.

US Pat. No. 10,247,390

COMPACT TILTABLE AND ROTATABLE RECESSED LIGHTING FIXTURE

DMF INC., Carson, CA (US...

1. A luminaire, comprising:a housing that completely encloses a light source module, the light source module including at least a power supply, wherein the housing including the enclosed light source module are installed within a cavity of a junction box; and
a heat sink that accommodates a light source, wherein the heat sink is tiltable with respect to the housing while remaining fastened to the housing but without being fastened to the junction box, such that the heat sink is attached to the junction box via the housing.

US Pat. No. 10,568,306

METHOD AND SYSTEM OF GROWING LIVING ORGANISMS

DMF SPRL, Marche-en-Fame...

1. A method of growing, maintaining and/or harvesting multicellular living organisms by controlling their physiology and lifetime according to sidereal time, and reducing via the sidereal time about 4 minutes difference according to present time each day, for a total of about 24 hours every year.

US Pat. No. 10,609,785

MULTI-PURPOSE MULTI-AGENT INFRARED SENSOR SYSTEM FOR COMMERCIAL AND RESIDENTIAL LUMINAIRES

DMF Inc., Carson, CA (US...

1. An occupancy detection system, comprising:a plurality of luminaires configured to wirelessly communicate with each other;
wherein each luminaire of the plurality of luminaires includes:
a wireless interface configured to communicate with the rest of the plurality of luminaires via a network;
a thermal infrared (IR) imaging sensor configured to collect thermal IR images of a vicinity of the luminaire; and
a microcontroller configured to process the thermal IR images for detecting one or more humans in the vicinity of the luminaire and to generate dimming signals for one or more of the plurality of luminaires and communicated from the each luminaire via the network based on the detection.

US Pat. No. 10,591,120

LIGHTING MODULE FOR RECESSED LIGHTING SYSTEMS

DMF, Inc., Carson, CA (U...

1. A lighting module for a recessed lighting system, the lighting module comprising:a housing having a sidewall, the sidewall surrounding an interior cavity of the housing that has an open rear end and an open front end, wherein the interior cavity is divided by a partition into a top interior cavity and a bottom interior cavity, the top interior cavity extending to the open rear end, the bottom interior cavity extending to the open front end;
a power supply circuit board positioned inside the top interior cavity of the housing;
a light source positioned inside the bottom interior cavity of the housing to emit light through the open front end of the housing that illuminates a room;
a first plurality of wires that passes through an opening in the partition, wherein the first plurality of wires is coupled to the power supply circuit board at one end and to the light source at another end, to deliver power to the light source;
a cover that covers the open rear end enclosing the top interior cavity, and is secured to the housing; and
an optic position inside of the bottom cavity of the housing, the optic having a reflector portion,
wherein the open rear end is sufficiently large so as to allow the power supply circuit board to be placed into and/or removed from the top interior cavity through the open rear end.

US Pat. No. 9,964,266

UNIFIED DRIVER AND LIGHT SOURCE ASSEMBLY FOR RECESSED LIGHTING

DMF, Inc., Carson, CA (U...

1. A compact recessed lighting system, comprising:a light source module for emitting light;
a driver for powering the light source module to emit light, the driver including an electronic device to at least one of supply and regulate electrical energy to the light source module;
a unified casting with a heat conducting closed rear face, a heat conducting sidewall and an open front face wherein the heat conducting sidewall is joined to the heat conducting closed rear face at one end and defines the open front face of the unified casting at another end, wherein the heat conducting sidewall has a first dimension between the heat conducting closed rear face and the open front face of less than 2 inches and extends 360 degrees around a center axis of the unified casting to define a first cavity that extends forward from the heat conducting closed rear face to the open front face of the unified casting and outward to the heat conducting sidewall, wherein the light source module and the driver are positioned inside the first cavity while being coupled to the heat conducting closed rear face of the unified casting such that the light source module is closer to the closed rear face of the unified casting than the open front face of the unified casting, and wherein the unified casting includes a plurality of elements positioned proximate to the open front face so as to align with corresponding tabs of a standard junction box and thereby facilitate holding the unified casting up against the standard junction box when the unified casting is installed in the standard junction box; and
a reflector positioned inside the first cavity of the unified casting and coupled to and surrounding the light source module such that the reflector directs light produced by the light source module into an area surrounding the compact recessed lighting system while enclosing the driver from exposure to the area surrounding the compact recessed lighting system,
wherein the heat conducting closed rear face and the heat conducting sidewall of the unified casting significantly dissipate heat generated by the light source module during operation of the light source module.

US Pat. No. 10,551,044

RECESSED LIGHTING ASSEMBLY

DMF, Inc., Carson, CA (U...

1. A recessed lighting unit comprising:a casing having a closed top end, a side wall having a top edge that joins the closed top end, wherein the side wall extends downward from the closed top end so as to completely surround a cavity that is between the closed top end and an open bottom end of the casing that is defined by a bottom edge of the sidewall;
a light source module having a plurality of driver wires that are to be electrically connected to a plurality of building electrical power wires, respectively, inside the cavity of the casing;
a holding bracket disposed inside the cavity of the casing, the holding bracket comprising:
a frame having a border that encloses a frame opening, the frame opening being shaped such that a housing of the light source module is insertable through the frame opening; and
an arm having a proximal end coupled to the frame and a distal end positioned above the frame, the arm including a slot that runs along a length of the arm between the proximal end and the distal end; and
an attaching member, disposed on the sidewall of the casing, that extends into the cavity of the casing and passes through the slot of the arm thereby substantially constraining the arm to the sidewall such that the arm is slidably adjustable along the slot relative to the attaching member.

US Pat. No. 10,488,000

THIN PROFILE SURFACE MOUNT LIGHTING APPARATUS

DMF, INC., Carson, CA (U...

1. An LED lighting apparatus, comprising:a housing comprising at least one sidewall having a front facing edge and a back facing edge positioned adjacent to a ceiling when the LED lighting apparatus is installed in an opening of the ceiling, wherein a depth of the at least one sidewall of the housing, between the front facing edge and the back facing edge, is less than one inch such that the apparatus does not visibly appear to protrude substantially from a surface of the ceiling when the apparatus is installed in the opening of the ceiling;
an LED board coupled to the housing, the LED board comprising a plurality of LEDs; and
a lens coupled to the housing, the lens having a back side facing the LED board and a front side opposite to the back side, wherein the front side of the lens provides a downward facing surface when the LED lighting apparatus is installed in the opening of the ceiling, the lens being disposed with respect to the LED board such that the plurality of the LEDs illuminate the back side of the lens,
wherein:
a first spacing of the plurality of the LEDs on the LED board causes resulting light from the downward facing surface of the lens to be substantially uniform during operation of the apparatus; and
the front side of the lens, providing the downward facing surface when the LED lighting apparatus is installed in the opening in the ceiling, is essentially flush with the front facing edge of the at least one sidewall of the housing.

US Pat. No. 10,139,059

ADJUSTABLE COMPACT RECESSED LIGHTING ASSEMBLY WITH HANGAR BARS

DMF, Inc., Carson, CA (U...

1. A compact recessed lighting system, comprising:a junction box having a sidewall that joins a top, defines an open bottom, and surrounds a cavity, wherein the junction box is fire-resistant and complies with an Underwriters Laboratories (UL) fire rating of up to two hours;
a unified casting having contained therein a light source module for emitting light and that is attached to a top inside surface of the unified casting, wherein the unified casting is at least partially positioned inside the cavity of the junction box such that the light source module is contained within the cavity of the junction box;
a driver for powering the light source module and that is positioned inside the cavity of the junction box;
a plurality of hangar bars for holding the junction box in a gap between beams in a structure, each one of the plurality of hangar bars being attached to one of a plurality of single piece hangar bar holders;
wherein each of the plurality of single piece hangar bar holders is moveably coupled to the junction box through an attachment mechanism formed on each of the plurality of single piece hangar bar holders, wherein each attachment mechanism is received in a corresponding one of a plurality of holes formed in the sidewall of the junction box,
wherein each single piece hangar bar holder has a front side facing inward towards the sidewall of the junction box, a back side facing outward, and a hangar bar holder railing structure extending outward that is to slide along a corresponding one of the hangar bars.

US Pat. No. 10,408,395

RECESSED LIGHTING SYSTEMS

DMF, Inc., Carson, CA (U...

1. A recessed light system, comprising:a compact lighting assembly, comprising:
a light source module including at least one LED;
electrical wires to receive AC voltage from an electrical system of a buiding;
an AC to DC converter to receive electrical energy from the electrical wires and supply regulated electrical energy to power the light source module;
a lens;
a reflector; and
a heat-sinking housing having a rear portion above which a cavity is formed, a front position that surrounds a aperture, and a sidewall, wherein:
a first end of the sidewall is joined to the rear portion and a second end of the sidewall is joined to the front portion;
the sidewall extends around the central axis of the heat-sinking housing;
the rear portion and the sidewall are formed of a heat conductive material capable of dissipating heat generated by the light source module away from the light source module;
the heat-sinking housing further comprises a twist-and-lock mechanism comprising flanges that extend outward from the front portion of the heat-sinking housing, wherein a maximum ouside width of the flanges is greater than 3 ½ inches;
the distance along the sidewall, between the flanges and an outside surface of the rear portion, is less than 1 ½ inches;
a maximum width of the sidewall, between the flanges and the rear portion, is less than 3 ½ inches; and
the light source module is positioned inside the cavity closer to an inside surface of the rear portion than to an exterior surface of the front portion of the heat-sinking housing;
wherein:
at least a portion of a front surface of the lens is coplanar with the exterior surface of the front portion of the heat-sinking housing to direct light produced by the light source module through the aperture into an area surrounding the recessed lighting system;
the reflector is positioned inside the heat-sinking housing to direct light emitted from the light source module through the lens;
the electrical wires pass through the rear portion of the heat-sinking casting; and
the AC to DC converter is positioned between the rear portion of the heat-sinking housing and the reflector.

US Pat. No. 10,989,390

FOLDED OPTICS METHODS AND APPARATUS FOR IMPROVING EFFICIENCY OF LED-BASED LUMINAIRES

DMF, Inc., Carson, CA (U...

1. A hybrid lens to redirect light emitted by a light source during operation of the light source, the hybrid lens comprising:a folded optic element defining an optical axis of the hybrid lens, the folded optic element comprising:
an output surface from which the light exits the hybrid lens, the output surface reflecting at least a portion of the light within the folded optic element prior to the portion of the light exiting the hybrid lens;
a first flange oriented parallel with the output surface;
an outer reflective surface comprising a plurality of triangular-shaped grooves forming corresponding total internal reflection (TIR) prisms, the plurality of triangular-shaped grooves being radially oriented with respect to the optical axis and separated from the first flange; and
a hollow core comprising:
a sidewall sharing an edge with the first flange;
a core output boundary disposed proximate to and in concentric alignment with the output surface; and
a core input opening, defined by the edge, through which the light enters the folded optic element; and
a reflector, optically coupled to the core input opening and disposed outside the hollow core, to receive the light emitted by the light source, reflect a first portion of the light, and directly transmit a second portion of the light into the hollow core without reflection by the reflector.

US Pat. No. 10,663,153

METHODS AND APPARATUS FOR ADJUSTING A LUMINAIRE

DMF, INC., Carson, CA (U...

30. An adjustable lighting apparatus, comprising:a lighting module, comprising:
a heat sink having a first cavity, the first cavity having a central region;
a light source, disposed partially in the first cavity and coupled to the central region of the heat sink, to emit light;
a driver, coupled to the heat sink, to supply electrical power to the light source;
a first heat sink arm, coupled to a first side of the heat sink, having a first motion track and a first pivot arm;
a second heat sink arm, coupled to a second side of the heat sink opposite to the first side of the heat sink, having a second motion track and a second pivot arm, the second heat sink arm being aligned to the first heat sink arm so as to be substantially symmetric about a first symmetry plane,
wherein the lighting module is rotatable about a first rotation axis perpendicular to both the first side of the heat sink and the second side of the heat sink, the first rotation axis intersecting the first pivot arm and the second pivot arm;
an adjustable mount, comprising:
a base structure having a sidewall that defines a second cavity that substantially surrounds the light source, a first opening that is aligned proximate to the lighting module, and a second opening through which light from the light source passes through, the base structure further including a first slot, disposed on a first side of the base structure, defining a first translation axis and a second slot, disposed on a second side of the base structure opposite to the first side of the base structure, defining a second translation axis, the first translation axis and the second translation axis being substantially parallel, the first rotation axis being substantially orthogonal to both the first translation axis and the second translation axis,
wherein the first rotation axis is translatable along the first translation axis and the second translation axis;
a first retainer, mechanically coupled to the first side of the base structure, having a first motion rail that slides relative to the first motion track;
a second retainer, mechanically coupled to the second side of the base structure, having a second motion rail that slides relative to the second motion track,
wherein the first motion rail is aligned to the second motion rail so as to be substantially symmetric about the first symmetry plane,
wherein the first motion rail, the first motion track, the second motion rail, and the second motion track are shaped such that the lighting module translates along the first translation axis when the lighting module rotates about the first rotation axis;
a shield, disposed, at least in part, in both the first cavity and the second cavity, having a third cavity that substantially surrounds the light source, the light source being disposed, in part, through a rotation slot on the shield, a first tab rotatably coupled to the first pivot arm of the first heat sink arm, a second tab rotatably coupled to the second pivot arm of the second heat sink arm, a first stabilizing slot, disposed on a first side of the shield, defining a third translation axis substantially parallel to the first translation axis, and a second stabilizing slot, disposed on a second side of the shield, defining a fourth translation axis substantially parallel to the first translation axis,
the first stabilizing slot receiving a first stabilizing pin rigidly coupled to the first retainer such that the first stabilizing slot is slidable along the first stabilizing pin,
the second stabilizing slot receiving a second stabilizing pin rigidly coupled to the second retainer such that the second stabilizing slot is slidable along the second stabilizing pin,
wherein the first tab, the first stabilizing slot, the second tab, and the second stabilizing slot cause the shield to translate along the first translation axis with the lighting module when the lighting module rotates about the first rotation axis; and
a secondary shield, mechanically coupled to the shield, to cover a portion of the rotation slot of the shield.

US Pat. No. 10,663,127

THIN PROFILE SURFACE MOUNT LIGHTING APPARATUS

DMF, Inc., Carson, CA (U...

1. An LED lighting apparatus, comprising:a housing including at least one sidewall, wherein a thickness of at least a portion of the at least one sidewall is less than ten millimeters;
an LED board coupled to the housing, the LED board comprising a plurality of LEDs; and
a lens coupled to the housing, the lens having a back side facing the LED board and a front side opposite to the back side, the lens being disposed with respect to the LED board such that the plurality of the LEDs illuminate the back side of the lens,
wherein the quotient of:
an LED-to-LED spacing of adjacent LEDs of the plurality of LEDs on the LED board; and
a spacing between the LED board and the lens,
is in a range of from 7.5/8 to 8.5/8.

US Pat. No. 10,753,558

LIGHTING APPARATUS AND METHODS

DMF, Inc., Carson, CA (U...

1. A lighting apparatus, comprising:a junction box having a first sidewall coupled to a first top and defining a first cavity having a first aperture, the junction box being formed of at least one of a metal, a polymer, a metal alloy, or a heat insulating material, the junction box having a shape that is at least one of a polyhedron, an ellipsoid, a cone, or a cylinder, the junction box receiving a first wiring from an electrical system of a building, the junction box having one or more tabs coupled to the first sidewall and disposed so as to partially cover the first aperture, wherein at least one of the one or more tabs includes a hole, the first sidewall having at least one knockout;
a lighting module, disposed, at least in part, inside the first cavity of the junction box, the lighting module comprising:
a casting having a second sidewall coupled to a second top and defining a second cavity having a second aperture, the casting being formed of at least one of aluminum alloys, copper, copper-tungsten pseudoalloy, aluminum silicon carbide, Dymalloy, E-Material, thermally conductive plastic, or thermally conduct ceramic, the casting having one or more fins formed on at least an exterior surface of the second sidewall to dissipate heat, the casting having one or more elements that align to the at least one of the one or more tabs of the junction box having a hole, wherein each hole in the at least one of the one or more tabs of the junction box receives a screw or a bolt to couple the casting to the junction box, the casting having one or more first elements forming at least a first part of at least one twist and lock connector;
a light source module, disposed inside the second cavity, to emit light, the light source module having at least one of a light-emitting diode (LED), an organic light-emitting diode (OLED), or a polymer light-emitting diode (PLED);
an AC to DC converter, disposed inside the second cavity, to power the light source module;
a lens, disposed so as to cover the second aperture, to diffuse the light, the lens being formed of at least one of a glass or a hard plastic;
a second wiring, passing through the second top, to supply electrical power to the lighting module, the second wiring having at least one keyed or interlocking connector coupled to a corresponding keyed or interlocking connector of the first wiring;
a trim to cover a hole in a wall or a ceiling in which the lighting apparatus is placed, the trim having one or more second elements forming at least a second part of the twist and lock connector to couple the trim to the casting;
a plurality of hangar bar holders, each one of the plurality of hangar bar holders being movably coupled to the junction box through a first attachment mechanism formed on each one of the plurality of hangar bar holders, wherein each first attachment mechanism is received by a corresponding one of a plurality of holes formed on the first sidewall of the junction box, wherein each one of the plurality of hangar bar holders includes a hangar bar holder lock to secure each one of the hangar bar holders at a position along the corresponding one of the hangar bars;
a plurality of hangar bars to hold the junction box in a gap between a plurality of support structures in the building, each one of the plurality of hangar bars being coupled to a corresponding one of the plurality of hangar bar holders via a railing structure disposed on each one of the hangar bar holders such that each one of the hangar bar holders slides along a corresponding one of the hangar bars, each one of the plurality of hangar bars comprising:
an inner bar element;
an outer bar element, the outer bar element being coupled to the inner bar element such that the outer bar element slides in a telescopic manner relative to the inner bar element; and
a pair of mounting blocks, disposed on each one of the plurality of hangar bars, to couple the hangar bars to the plurality of support structures, wherein each mounting block includes a second attachment mechanism to couple the junction box to the plurality of support structures in the building,
wherein the plurality of support structures is at least one of a joist, a metal stud, or a T-bar.

US Pat. No. 10,816,148

RECESSED LIGHTING SYSTEMS

DMF, Inc., Carson, CA (U...

1. A recessed lighting system, comprising:a lighting assembly, comprising:
a light source module including at least one LED;
an AC to DC converter to receive an AC voltage and supply regulated electrical energy to power the light source module;
a lens;
a reflector; and
a heat-sinking unified casting having a closed rear face and a sidewall wherein:
the sidewall is joined to the closed rear face at one end and joined to a front end face of the heat-sinking unified casting at another end of the heat-sinking unified casting;
the sidewall extends 360 degrees around the central axis of the heat-sinking unified casting and defines a casting cavity that extends forward from the closed rear face to the front end face of the heat-sinking unified casting and outward to the sidewall;
the sidewall has beat sink fins formed on its outside surface;
the closed rear face and the sidewall are formed of a heat conductive material to dissipate beat generated by the light source module;
the heat-sinking unified casting further comprises a twist-and-lock mechanism comprising multiple flanges that extend radially outward from a perimeter of the front end face of the heat-sinking unified casting;
the height of the sidewall, between the flanges and an outside surface of the closed rear face, is less than 1½ inches;
an outside width of the sidewall, between the flanges and the closed rear face, is less than 3½ inches and can fit between multiple tabs of a standard junction box; and
the light source module is positioned inside the casting cavity closer to the closed rear face than to a surface of the front end face of the heat-sinking unified casting;
wherein:
at least a portion of a front surface of the lens is coplanar with the front end face of the heat-sinking unified casting to direct light produced by the light source module out into an area surrounding the recessed lighting system;
the reflector is positioned inside the heat-sinking unified casting to direct light emitted from the light source module through the lens;
a plurality of electrical wires coupled to the AC to DC converter pass through the closed rear face of the heat-sinking casting; and
the AC to DC converter is positioned proximate to the closed rear face of the heat-sinking unified casting, and is coupled to the heat-sinking unified casting using a connecting mechanism, and is insulated from the heat-sinking unified casting.

US Pat. No. 10,982,829

ADJUSTABLE ELECTRICAL APPARATUS WITH HANGAR BARS FOR INSTALLATION IN A BUILDING

DMF, Inc., Carson, CA (U...

1. An apparatus, comprising:a junction box comprising:
a sidewall having an exterior shape defined at least in part by at least eight sides; and
a cavity, surrounded by the sidewall, to contain electrical wires that receive a voltage of at least 120 VAC from an electrical system of a building, the cavity of the junction box having a size in compliance with at least one applicable building and safety code and/or regulation;
a first telescoping hangar bar assembly, disposed on and in direct contact with a first side of the at least eight sides of the sidewall of the junction box, to facilitate installation and positioning of the junction box in a wall or a ceiling in the building; and
a second telescoping hangar bar assembly, disposed on and in direct contact with a second side of the at least eight sides of the sidewall of the junction box, to further facilitate installation and positioning of the junction box in the wall or the ceiling in the building,
wherein:
the second side of the sidewall of the junction box on which the second telescoping hangar bar assembly is disposed is opposite to the first side of the sidewall of the junction box on which the first telescoping hangar bar assembly is disposed; and
a position of the junction box with respect to the first telescoping hangar bar assembly and the second telescoping hangar bar assembly is adjustable over two different directions.

US Pat. No. 10,975,570

ADJUSTABLE HANGER BAR ASSEMBLY

DMF, Inc., Carson, CA (U...

1. A hanger bar assembly (200), comprising:a first hanger bar (66A) having a first interlocking structure (75A);
a second hanger bar (66B) having a second interlocking structure (75B) to interlock with the first hanger bar, the second hanger bar being mechanically coupled to the first hanger bar such that the second hanger bar slides relative to the first hanger bar in a telescopic manner along a first axis; and
a hanger bar holder (56) to hold at least one of the first hanger bar or the second hanger bar,
wherein:
the first interlocking structure constrains lateral movement of the second hanger bar relative to the first hanger bar along a second axis, perpendicular to the first axis, and a third axis, perpendicular to the first axis and the second axis;
the second interlocking structure constrains lateral movement of the first hanger bar to the second hanger bar along the second axis and the third axis;
the hanger bar holder includes a frame (58) comprising:
a first section (80A) to guide at least the first hanger bar through the hanger bar holder along the first axis and constrain lateral movement of the first hanger bar relative to the hanger bar holder along the second axis and the third axis; and
a second section (80B) to guide at least the second hanger bar through the hanger bar holder along the first axis and constrain lateral movement of the second hanger bar relative to the hanger bar holder along the second axis and the third axis,
wherein:
the frame partially surrounds the first hanger bar and the second hanger bar so as to form a passageway (82) for the first hanger bar and the second hanger bar;
the hanger bar holder has a length along the first axis; and
at least a portion of the first section of the frame and the second section of the frame are overlapping along at least a portion of the length of the hanger bar holder.

US Pat. No. 10,969,069

RECESSED LIGHTING SYSTEMS

DMF, Inc., Carson, CA (U...

1. A recessed lighting system, comprising: a lighting assembly, comprising: a light source module including at least one LED; an AC to DC converter to receive an AC voltage and supply regulated electrical energy to power the light source module; a lens; a reflector; a heat-sinking unified casting having a closed rear wall and a sidewall; and a front end face, wherein: the sidewall is joined to the closed rear wall and joined to the front end face; the sidewall extends 360 degrees around the central axis of the heat-sinking unified casting and defines a casting cavity that extends forward from the closed rear wall to the front end face and outward to the sidewall; the heat-sinking unified casting has heat sink fins formed on at least a portion of its outside surface; the closed rear wall and the sidewall are formed of a heat conductive material to dissipate heat generated by the light source module; the front end face further comprises a twist-and-lock mechanism comprising at least one of multiple slots or multiple flanges that extend radially outward; an outside width of the sidewall, between the front end face and the closed rear wall, is less than 3½ inches and fits between multiple tabs of a standard junction box; and the light source module is positioned inside the casting cavity closer to the closed rear face than to a surface of the front end face, wherein: the lens is positioned to direct light produced by the light source module out into an area surrounding the recessed lighting system; the reflector is positioned inside the heat-sinking unified casting to direct light emitted from the light source module through the lens; a plurality of electrical wires coupled to the AC to DC converter pass through the closed rear wall of the heat-sinking casting; and the AC to DC converter is physically coupled to the heat-sinking unified casting using a connecting mechanism and is insulated from the heat-sinking unified casting.

US Pat. No. 10,960,160

ANESTHETIC CIRCUIT HAVING A HOLLOW FIBER MEMBRANE

DMF MEDICAL INCORPORATED,...

17. A fluid separation apparatus fluidly connectable to an anesthetic circuit, the anesthetic circuit having a flow passage for transporting an exhaled fluid mixture containing at least exhaled anesthetic agent, exhaled carbon dioxide, exhaled oxygen, and an exhaled metabolic product through the flow passage, the fluid separation apparatus comprises:a membrane having a membrane internal side that is internal to the flow passage, and a membrane external side that is external to the flow passage, the membrane internal side located downstream from the entry inlet,
wherein the membrane is at least partially impervious to the exhaled anesthetic agent to at least partially retain the exhaled anesthetic agent in the flow passage after the exhaled fluid mixture contacts the membrane, and
a membrane housing containing the membrane therein, the membrane housing having a sweep fluid flow path having at least one sweep inlet to receive a sweep fluid comprising sweep fluid oxygen therethrough and at least one sweep outlet to expel the sweep fluid from the membrane housing,
wherein the housing is configured to receive the exhaled fluid mixture via a housing inlet,
wherein the membrane housing is configured to direct the exhaled fluid mixture into contact with the membrane, and wherein the membrane is more pervious to each of the exhaled carbon dioxide, the exhaled oxygen, and the exhaled metabolic product than the exhaled anesthetic agent such that the membrane has selectivities of exhaled carbon dioxide, exhaled oxygen, and exhaled metabolic product to exhaled anesthetic agent that are each greater than 1, whereby the membrane is configured to transfer a portion of the exhaled carbon dioxide and exhaled metabolic product from the exhaled fluid mixture into the sweep fluid flow path, and configured to transfer the sweep fluid oxygen into the flow passage to provide leave a modified fluid mixture having lower amounts of the exhaled carbon dioxide and the exhaled metabolic product and a higher amount of the oxygen than the exhaled fluid mixture, and
wherein the membrane housing directs the modified fluid mixture out of the membrane housing via a housing outlet.

US Pat. No. 10,816,169

COMPACT LIGHTING APPARATUS WITH AC TO DC CONVERTER AND INTEGRATED ELECTRICAL CONNECTOR

DMF, Inc., Carson, CA (U...

1. A lighting apparatus, comprising:a housing structure comprising:
a rear face;
a sidewall coupled to the rear face and defining an interior cavity, the sidewall having at least one exterior width dimension such that at least a portion of the sidewall proximate to the rear face fits into a space having a width of less than 3.5 inches;
a front end face that surrounds an aperture of the interior cavity; and
at least one connecting mechanism to couple a trim to the front end face of the housing structure without the use of separate tools or other devices;
a light source module positioned inside the interior cavity of the housing structure and including at least one LED; and
an AC to DC converter, positioned inside the interior cavity of the housing structure, to receive electrical energy and supply regulated electrical energy to power the light source module.