Patent US4229785A successfully refreshed from Google Patents.
US4229785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floodlight reflector mounting
Assignee: General Electric Co
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Filing: 1979-01-18
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Granted: 1980-10-21
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Expires: 1999-01-18
Abstract
Abstract Flexible sheet reflector for floodlight is supported at its ends by cradle members having parabolic openings into which the reflector ends are inserted, so that the reflector is formed and held in the desired shape by the cradle members, thereby avoiding distortion of the reflector which would otherwise result from the use of screw mountings or other fasteners.
Inventors
- 👤 Clarence J. Tuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:58
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/10; F21V7/16; F21V21/00; F21V21/14; F21V21/30; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
A lighting fixture comprising, in combination, a housing having a window, a plurality of spaced cradle members mounted in said housing adjacent said window, each cradle member formed with an opening having a portion of predetermined shape, and a flexible reflector member inserted at opposite sides into the openings of said spaced cradle members and arranged facing said window, said cradle members holding said reflector member in said predetermined shape, said openings of said cradle members each being defined by a rear cradle portion for shaping said reflector and front cradle portions for holding said reflector against said rear cradle portion.
Claim 2
Dependent Claim
101 words
A lighting fixture comprising, in combination, a housing having a window, a plurality of spaced cradle members mounted in said housing adjacent said window, each cradle member formed with an opening having a portion of predetermined shape, and a flexible reflector member inserted at opposite sides into the openings of said spaced cradle members and arranged facing said window, said cradle members holding said reflector member in said predetermined shape, said openings of said cradle members each being defined by a rear cradle portion for shaping said reflector and front cradle portions for holding said reflector against said rear cradle portion.
Claim 3
Dependent Claim
20 words
A lighting fixture as defined in claim 1, said cradle members constituting the sole means for holding said reflector member.
Claim 4
Dependent Claim
45 words
A lighting fixture as defined in claim 2, said openings of said cradle members each being defined by a curved portion intersectinhg a straight portion, said flexible reflector member lying against and formed by said curved portion and abutting said straight portion at its edges.
Claim 5
Dependent Claim
13 words
A lighting fixture as defined in claim 3, said curved portion being parabolic.
Claim 6
Dependent Claim
28 words
A lighting fixture as defined in claim 1, and lamp support means secured to said cradle members for holding a lamp along an axis passing through said openings.
Claim 7
Dependent Claim
36 words
A lighting fixture as defined in claim 5, said openings of said cradle members each being defined by a parabolic portion intersecting a straight portion, said axis being substantially at the focus of said parabolic portion.
Claim 8
Dependent Claim
37 words
A lighting fixture as defined in claim 1, said plurality of spaced cradle members comprising a pair of plate-like members each having a flange along one side, said members being attached at said flanges to said housing.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |