Abstract: An improved optics, recessed lighting fixture specially designed for easy installation into sloped ceilings is described. The improved optics are provided by a novel asymmetrical dome reflector which adapts the fixture to sloped ceilings for directing reflected light to within the natural cone of illumination emitted by a lamp in the absence of a reflector.

Abstract: Lighting fixtures which may be employed in inclined ceiling applications. The fixtures feature substantially elliptical cross-sectioned housings which, when intersected by the plane of an inclined ceiling, yield a circular opening and trim in order to lend an aesthetically pleasing appearance. Such fixtures may also employ adjustable socket housings in order to allow the lamp contained within the fixture to be disposed substantially perpendicular to the floor space, or as otherwise desired, to impart a desired lighting pattern.

Abstract: A device for providing light along a runway or taxiway at an airport. A base receptacle is adapted to be positioned along the runway and has an open end. A sleeve member is movably received within the base receptacle and has a sleeve member passageway. Replaceable light fixture connecting apparatus is used to connect a light fixture to the sleeve member. Sleeve member connecting apparatus selectively connects the sleeve member to the base receptacle at varying positions.

Abstract: A down lighting system for elevator cabs and the like includes halogen lights in standard and emergency light fixtures. Both types of fixtures are connected to the ceiling by a clamp arrangement which is universally adaptable to a wide variety of ceiling types without changing the light housing dimensions. The clamp arrangement fastens light housings against rotation with respect to the ceiling and it is adjustable to different height ceiling configurations merely by connection to different vertical positions of the outer surface of the fixture. The standard fixture includes a halogen bulb with its own reflector. The emergency lighting fixture includes a halogen bulb/reflector unit with the emergency self focusing bulbs concentrically spaced around it. Both light sources pass focused light directly into the space below the ceiling for meeting test point candle power requirements.

Abstract: The disclosure herein describes a light fixture for mounting to a ceiling, wall or the like which comprises a pot having a peripheral edge abutting the area adjacent a hole made in the ceiling or wall. A hook and a bolt extending through appropriate openings in the inner wall and the side wall of the pot cooperate to secure the pot to the ceiling. Rotating the bolt causes the hook to move into an abutting engagement with the rear surface of the ceiling, the latter thus being contacted, on the outside, by the peripheral edge of the pot and, on the inside, by that portion of the hook engaging the rear surface of the ceiling.

Abstract: A housing for mounting electrical fixtures behind surfaces such as walls and ceilings, includes a surface flange and a plurality of pairs of axially directed slots in the side wall. When inserted in a hole in a ceiling or wall until the housing flange is flush with the wall or ceiling surface, a pair of spring elements are compressed and inserted through a pair of slots which allow the springs to bear against the slot and interior surface of the ceiling or wall to hold the flange flush.

Abstract: A light fixture support member is attached to a cam plate portion of a mounting member having an elongated slot of uniform width by a cam head fastener mechanism that includes a screw having a head portion, a shank portion and a lock portion between the head portion and the shank portion. The shank portion is threaded and passes through the hole in the base portion of the support member. The lock portion is normally received in the slot of the cam plate portion and is of a size and shape such that the screw cannot rotate substantially when the lock portion is received in the slot. The head portion includes opposite shoulders that are engageable with surface portions of the mounting member on opposite sides of the slot in one rotational position of the screw and disengageable from said portions in another rotational position of the screw so that the head can pass through the slot.

Abstract: A fastening device (10) for securing a recessed casing in a cavity in a surface, comprises a guide (11) along which runs a slider (12) with a front engaging end (29). The slider (12) has unidirectional coupling means (19, 20) which engage with the guide (11). The slider (12) is also provided, towards the front end (29), with a cam surface (28) acting on the guide (11) in slots (21, 22) to increase the distance of the front end (29) of the slider (12) from the guide (11) when it is made to slide along the guide by manual shifting means (15). In this way, the front end (29) is brought into contact with the surface of the cavity and the slider (12) engages with the guide (11) by means of the unidirectional coupling means (19, 20).

Abstract: A lighting fixture is convertible for selective use in different suspended ceilings having grid members with bearing surfaces of a predetermined height differential. The fixture comprises a housing including a main section and two longitudinal side sections releasably securable to the main section. The main section carries a fluorescent lamp(s), and the side sections carry a shielding media, such as a deep cell louver assembly or a luminous element. The side sections carry tabs which are selectively insertable within either of two vertically spaced rows of slots in the main section to enable the main section (and the lamp) to be vertically adjusted relative to the side sections (and the shielding media) in order to maintain a prescribed photometric relationship between the lamp and shielding media, regardless of which grid suspension system is utilized.

Abstract: An adapter for sloped ceilings or the like mounts a recessed lighting assembly in a ceiling at an angle to the ceiling surface. A lamp mounting sleeve is pivotable on the adapter frame and is fastenable in a plurality of angular positions by a strap extending between the mounting sleeve and the adapter frame. Mounting of the lighting assembly in the ceiling is accomplished by butterfly clips which permit the used of a variety of hanger bars and brackets.

Abstract: A self locking mounting bar having a notch near one end, which notch fits onto the upper edge of a main runner of a suspended ceiling. The other end of the bar slides into one end of a lighting fixture frame. The bars are generally used in pairs to provide an adjustable mounting apparatus for recessed lighting fixtures; a pair of bars mounted at the same end of the fixture frame, but on opposite sides thereof, may slide toward or away from each other to accomodate variable ceiling runner spacings. Preferably, two pairs of self locking adjustable mounting bars are used to mount a fixture, one pair at each end of the fixture frame. The bar is mounted by placing the notched portion of the bar onto the upper edge of a ceiling runner. The bar then may be locked in place by bending a tab at the end thereof underneath the upper edge of the runner.

Abstract: An adjustable mounting frame, and a kit including this frame, for mounting recessed lighting fixtures, and a method therefor. The mounting frame includes a mounting ring and spring members which can hold a lighting fixture trim in place. In addition to the mounting frame, the kit may also include fastening means for mounting the frame onto the ceiling, a junction box, an electrical conduit and/or a socket cup. The mounting method generally involves the steps of installing the mounting frame in the ceiling, and mounting the trim in the frame by inserting the trim into the spring members.

Abstract: A recessed light fixture assembly includes a plaster frame having a rectangular floor. A bar hanger bracket is supportably connected to each of two opposed edges of the floor. Each bar hanger bracket includes a support ledge supportably connected to its respective edge of the floor, and an upright sidewall formed integral with each support ledge. A bar hanger retaining finger is formed integral with each side of the sidewall. A pair of opposed retaining tabs is formed integral with each side of each sidewall and is spaced from the retaining finger on the respective side. A bar hanger including an elongated arm is positioned between each pair of retaining tabs and is thereby slideably connected to each bar hanger bracket and captured by the retaining finger. Each bar hanger has an elongated arm which arm has two assembly notches in one edge.

Abstract: A plaster frame or base for recessed lighting fixtures has hanger bar receiving corners which are bendable to accommodate parallel or perpendicular axis orientation relative to ceiling joists or suspension grids. The frame spans the space between a pair of hanger bars and its corners have a plurality of mountings to accommodate different types of hanger bar such as flat horizontal, flat vertical, and adjustable interlocking hanger bars. The frame is preferably a rectangular metal plate with a flat base having upstanding side flanges, a fixture receiving aperture through the base between the flanges having a depending skirt or collar to surround and mount the fixture, mountings on the base for a junction box adjacent the aperture, and bendable hanger bar securing corners. The plate is sufficiently narrow to fit through the conventional ceiling aperture for the fixture.

Abstract: A clip for retaining a light canister in a ceiling includes a bendable leg member which is positionable between a first position and a second position. In the first position, the canister is insertable into a hole in a ceiling and in the second position, the bendable leg member is moved away from the canister so as to retain the canister within the ceiling. A brace member extends between the bendable leg member and the canister to retain the bendable leg member in its second position.

Abstract: A lighting fixture is provided for an inclined surface. The fixture includes a lamp housing for receiving a lamp, and the housing defines a bottom opening for accommodating a baffle. The baffle has a generally cylindrical internal configuration relative to a longitudinal axis. The baffle has an upper open end and a lower open end. The lower open end of the baffle is defined by a plane at an oblique angle relative to the baffle longitudinal axis so as to provide an elliptical aperture which may be disposed parallel to the plane of the sloped ceiling when the fixture is mounted in the sloped ceiling.

Abstract: This loudspeaker mounting system provides an enclosure (10) which is intended for installation into a drywall ceiling (12). The enclosure (10) includes an upper wall (16), and an annular lower flange (18) interconnected by a cylindrical sidewall (20). The sidewall includes a circumferentially spaced generally tee-shaped slots (30) each receiving an individual support bracket member (32) having a generally ell-shaped forward portion (54) and a slotted rearward portion (56). Inwardly projecting threaded fasteners (52) are attached to the sidewall adjacent each slot (30) to receive the slotted transverse portion (56). When the bracket member forward portions (54) are inserted into the sidewall (20) the bracket members can be guided into engagement with the ceiling (12) so that the ceiling is sandwiched between the flange (18) and the individual bracket members (32).

Abstract: Ceiling lights have recessed cans with sockets mounted centrally on a resilient, usually cantilevered, support. A lamp with an integrally connected reflector and external trim ring are connected to the socket. The resilient support pulls the trim ring up against an area of the ceiling surrounding the recessed can, causing the trim ring to act as a self-leveling device for the lamp, while functioning in the manner as a suitable trim for covering the unsightly hole in the ceiling which accommodates the recessed can or fixture. This arrangement allows the near-maximum use of the diametrical width of the opening provided by the recessed fixture as a means of projecting more usable light downward.

Abstract: Mounting device for rotatable adjustment of asymmetric reflector within luminaire housing to vary the light distribution from the luminaire. The mounting device includes a plurality of brackets circumferentially spaced around the lower portion of the dome-shaped luminaire housing for supporting the circular rim of the asymmetric reflector, which is formed with a corresponding plurality of recesses for clearing the brackets when the asymmetric reflector is inserted in or removed from the luminaire housing. Adjustable clamps are arranged adjacent the brackets for securing the reflector in the desired rotational position.

Abstract: A ceiling mounted support structure for mounting light fixtures, louvers, and the like, including at least one support piece mounted or supported by at least one building ceiling support, the piece having an elongate slot therein in which an enlarged end of a flipper bar rotates. The flipper bar rotates upwardly to permit the fixture part to be supported to pass upwardly therepast and rotates downwardly to provide the in-place support for the fixture part.

Abstract: An improved pressed glass lens member for a sealed beam lamp unit is provided to include an outer sealing rim of varying thickness to compensate for thermal contraction of the lens member when molded in a predetermined manner. Specifically, the ordinary warped condition encountered with thermal contraction of the pressed glass article when initially formed is compensated for so as to permit subsequent heat sealing with a pressed glass reflector member by thermally fusing the glass material of both members in the sealing regions and without encountering the manufacturing defects now being experienced. The preferred embodiments illustrate such controlled thickness variation of the body section in the outer sealing rim region of a pressed glass lens member for both circular-shaped and rectangular-shaped lens configurations.