Patent US4039822A successfully refreshed from Google Patents.
US4039822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular recessed lighting fixture
Assignee: Genlyte Group Inc
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Filing: 1976-05-05
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Granted: 1977-08-02
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Expires: 1996-05-05
Abstract
Abstract The present invention is directed to an improved recessed lighting fixture for flush mounting in a hung ceiling structure or the like. The fixture is characterized by its ability to be securely anchored in position, yet be readily removed from a position below the ceiling for the changing of bulbs, replacement of electrical connections, etc. The apparatus includes a frame permanently mounted above the ceiling, installation of the reflector and attached light source components being effected by simple vertical movement of the reflector assembly. Removal of the reflector assembly from the frame is accomplished by a relative rotation of the reflector and frame.
Inventors
- 👤 Kingsley Chan
- 👤 Neil Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:34
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16; F21V17/164; F21S; F21S8/00; F21S8/02; F21V21/00; F21V21/02; F21V21/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
200 words
A flush mounted ceiling light fixture comprising, in combination, a frame adapted to be mounted above a ceiling, a cylindrical bezel depending from said frame and having a downwardly open circular mouth portion, a plurality of hardened metal spring members having first ends fixed to said frame at mutually angularly spaced positions surrounding said mouth, said spring members inluding free end portions extending inwardly and overlying said mouth portion, said spring members including inwardly facing cutting lip portions adjacent said free ends, said lip portions being inclined to the horizontal and defining segments of helices having substantially the same pitch angle and direction of inclination, said lip portions being spaced equally from the axis of said bezel and being disposed in generally coplanar alignment, a reflector member formed of substantially softer material than said lip portions, said reflector member being circular in transverse section, the diameter of external portions of said reflector being coordinated with the spacing of said lip portions to provide a snug frictional interfit of said lips and external portions, whereby a reflector supported between said lips may be demounted by relative rotation of said reflector and bezel in the direction of inclination of said lip portions.
Claim 2
Dependent Claim
200 words
A flush mounted ceiling light fixture comprising, in combination, a frame adapted to be mounted above a ceiling, a cylindrical bezel depending from said frame and having a downwardly open circular mouth portion, a plurality of hardened metal spring members having first ends fixed to said frame at mutually angularly spaced positions surrounding said mouth, said spring members inluding free end portions extending inwardly and overlying said mouth portion, said spring members including inwardly facing cutting lip portions adjacent said free ends, said lip portions being inclined to the horizontal and defining segments of helices having substantially the same pitch angle and direction of inclination, said lip portions being spaced equally from the axis of said bezel and being disposed in generally coplanar alignment, a reflector member formed of substantially softer material than said lip portions, said reflector member being circular in transverse section, the diameter of external portions of said reflector being coordinated with the spacing of said lip portions to provide a snug frictional interfit of said lips and external portions, whereby a reflector supported between said lips may be demounted by relative rotation of said reflector and bezel in the direction of inclination of said lip portions.
Claim 3
Dependent Claim
15 words
A light fixture in accordance with claim 1 wherein said reflector is comprised of aluminum.
Claim 4
Dependent Claim
42 words
A light fixture in accordance with claim 1 and including lighting means at an upper end of said fixture, the lower end of said fixture having a radially outwardly extending flange portion adapted to be disposed adjacent and outwardly lap said ceiling.
Claim 5
Dependent Claim
49 words
Apparatus in accordance with claim 3 and including an annular mask portion having a central aperture, the inside diameter of said aperture being greater than the diameter of said reflector but less than the diameter of said flange, whereby said mask is sandwiched against said ceiling by said flange.
Claim 6
Dependent Claim
30 words
Apparauts in accordance with claim 1 wherein the said lip portions are inclined upwardly, whereby said reflector may be inserted by axial shifting movement into supported position between said lips.
Claim 7
Dependent Claim
39 words
Apparatus in accordance with claim 5 wherein said reflector is conical, upper portions of said reflector being of lesser diameter than lower portions thereof, whereby said lips are cammed apart responsive to said axial upward movement of said reflector.
Claim 8
Dependent Claim
19 words
Apparatus in accordance with claim 1 wherein the inwardly facing portions of said lips include sharpened cutting edge portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |