Sealed lighting fixture having mechanisms for venting and...

Details Sealed lighting fixture having mechanisms for venting and... Sealed lighting fixture having mechanisms for venting and...

2007-07-31

2007-07-31

Luebke, Renee (Department: 2875)

Illumination

Light source and modifier

With sealing means or artificial atmosphere

C362S264000, C362S362000, C362S147000

Reexamination Certificate

active

11150000

ABSTRACT:
A lighting fixture assembly includes a housing assembly that forms an interior. A valve mechanism is associated with the housing assembly and is configured to automatically vent fluid from the interior to the atmosphere when the pressure in the interior exceeds a threshold level. Otherwise, the valve mechanism seals the interior from the atmosphere. The lighting fixture also includes a pressure-equalization mechanism, separate from the valve mechanism, which is also associated with the housing assembly. The pressure-equalization mechanism is configured to, upon activation, substantially equalize the interior pressure with the atmosphere pressure and to otherwise seal the interior from the atmosphere.

REFERENCES:
patent: 3989061 (1976-11-01), Pelton
patent: 5251111 (1993-10-01), Nagengast et al.
patent: 5269208 (1993-12-01), Kolvites et al.
patent: 6161948 (2000-12-01), Hagen
patent: 6254258 (2001-07-01), Case
patent: 2002/0159273 (2002-10-01), Erion
patent: 2004/0246709 (2004-12-01), Hagen
Journal of Hydraulic Research, vol. 39, 2001, No. 6, On The Head-Discharge Relation of a “Duckbill” Elastomer Check Valve, Lee et al., pp. 619-627.

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