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US 4,086,480 AGranted
Suspension ceiling and recessed lighting system
AssigneeDonn Products, Inc.
InventorAlbert H. Lahm
Life of this patent
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AssigneeDonn Products, Inc.
InventorAlbert H. Lahm
Estimating the term…
An integrated suspension ceiling and recessed lighting fixture system is disclosed in which a fixture is supported primarily on arched bridging members which extend between parallel runs of the grid of the suspension ceiling. The bridging members lock at their ends in the runs and maintain a predetermined spacing between the runs thus permitting relatively long uninterrupted fixtures to be installed in the suspension ceiling. The bridging members also support a continuous channel or raceway which permits the fixture to be wired as a unit regardless of its total length. A reflector is supported by flanges of the inverted tees constituting the runs along the sides of the fixture so separate framing is not required. With the invention recessed lighting fixtures of substantially any desired length may be installed in a suspension ceiling system.
A recessed lighting system comprising a planar grid defining an elongated lighting opening, said grid including parallel runs of inverted tee members along opposite sides of said opening providing flanges extending inwardly along opposite sides of said opening, a plurality of arched bridging members extending across said opening and locked at their ends to said tee members of said runs, said bridging members operating to maintain a predetermined spacing between said runs, an elongated channel supported by said bridging member above the plane of said grid and providing support for lights and a raceway for wiring, and an elongated unitary reflector extending across said opening and providing opposite edges extending over and resting on said flanges and covering said raceway, said parallel runs along opposite sides of said opening providing the framing of said lighting fixture and in cooperation with said reflector providing the finished enclosure of the sides of said lighting system.
An integrated suspension ceiling and recessed lighting fixture comprising a planar grid of main tee and cross tee members interconnected to define panel openings and an elongated lighting opening, said grid being supported from the building structure in which the ceiling is installed, said lighting opening being uninterrupted by tee members, said tee members providing flanges extending inwardly along opposite sides of said lighting opening, a plurality of arched bridging members extending across said lighting opening and connected at their ends to the tee members along the sides of such opening to maintain a predetermined spacing between the tees along the sides of said lighting opening and providing the full support of said bridging members, a raceway supported said bridging members above said grid plane, and a reflector positioned below said raceway and extending across said lighting opening, said reflector extending over said inwardly extending flanges and being supported along its edges directly on said inwardly extending flanges, said tee members in cooperation with said reflector providing the entire framing along the sides of said lighting fixture.
A recessed lighting fixture for suspension ceilings which include planar grid of main tee and cross tee members arranged to define an elongated lighting opening and provide inwardly extending flanges along the sides of said opening comprising a plurality of arched bridging members adapted to connect at their ends to the tee members along the sides of said opening and maintain a predetermined spacing therebetween, a raceway adapted to be supported by said bridging members above the plane of said grid and an arched reflector adapted to be positioned below said raceway and extending across said opening with its edges extending over and directly supported on said inwardly extending flanges, said fixture being free of any framing structure along its sides and being entirely framed by the tee members extending along the elongated opening in which it is installed.
Dependencies are inferred from the claim text.