Fire-rated recessed downlight

Details Fire-rated recessed downlight Fire-rated recessed downlight

2005-05-23

2008-12-30

OShea, Sandra (Department: 2875)

Illumination

Housing

Recessed

C362S147000, C362S148000, C362S150000, C362S365000

Reexamination Certificate

active

07470048

ABSTRACT:
The fire-rated recessed downlight includes a mantle, and a light fixture which is fixed in the mantle, said mantle having at least one radiating hole, in which a dilatable fireproof piece is fixed. The radiating hole is connected with outside of the mantle through a radiating aperture. The radiating hole of the mantle and the dilatable fireproof piece could help to radiate the heat in ordinary situations and the dilatable fireproof piece will expand rapidly to close the radiating hole when on fire, therefore the fire inside the mantle will not spread to the outside.

REFERENCES:
patent: 3778609 (1973-12-01), Liberman
patent: 4754377 (1988-06-01), Wenman
patent: 6357891 (2002-03-01), Newbold et al.
patent: 6431723 (2002-08-01), Schubert et al.
patent: 7320536 (2008-01-01), Petrakis et al.
patent: 0909919 (1999-04-01), None
patent: 2234938 (1991-02-01), None
patent: 2326467 (1998-12-01), None
patent: 264352 (1998-06-01), None
patent: WO 98/12472 (1998-03-01), None

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