Illumination – With static structure – Wall or ceiling
Patent
1995-09-21
1999-08-10
Quach, Y.
Illumination
With static structure
Wall or ceiling
362218, 362267, 362365, F21V 3102
Patent
active
059347864
ABSTRACT:
A lighting unit adapted to provide a sealed closure in an opening in a Clean-Room ceiling includes a housing which supports one or more light emitting means and has a perimeter structure for supporting the housing in place over the ceiling opening, and a substantially impermeable light diffuser sealingly mounted to the housing by a peripheral frame. A perimeter gasket is retained between and sealingly engages perimeter surfaces of the frame and the opening in the ceiling, and a reversibly adjustable retention device supports the frame and housing together to cause the gasket to sealingly engage the perimeter surface of the frame and the opening in the ceiling. The lighting unit is adapted to prevent or abate leakage of filtered, conditioned air from a room, e.g., a Clean-Room, and is adapted to prevent or abate infiltration of unfiltered, contaminated air into the room from the space above the ceiling.
REFERENCES:
patent: 2327552 (1943-08-01), Poehling
patent: 2873358 (1959-02-01), Dunker
patent: 3015721 (1962-01-01), Guth, Jr.
patent: 3281587 (1966-10-01), Quin
patent: 3555267 (1971-01-01), Sutter
patent: 3570385 (1971-03-01), Heisterkamp
patent: 3838268 (1974-09-01), Fabbri
patent: 3860829 (1975-01-01), Fabbri
patent: 4171535 (1979-10-01), Westerman
patent: 4188656 (1980-02-01), Howard
patent: 4410931 (1983-10-01), DeCandia et al.
patent: 4461205 (1984-07-01), Shuler
patent: 4494175 (1985-01-01), Gawad et al.
patent: 4580200 (1986-04-01), Hess et al.
patent: 4625267 (1986-11-01), Mikalonis
patent: 4671811 (1987-06-01), Cadwell, Jr. et al.
patent: 4860180 (1989-08-01), Degelman
patent: 4883513 (1989-11-01), Monson et al.
patent: 4967530 (1990-11-01), Clunn
patent: 5161878 (1992-11-01), Degelmann et al.
patent: 5279632 (1994-01-01), Decker et al.
LandOfFree
Sealed lighting unit for clean-rooms and the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealed lighting unit for clean-rooms and the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealed lighting unit for clean-rooms and the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1112791