US4293900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire reflector
Assignee: FORUM Inc
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Filing: 1979-10-09
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Granted: 1981-10-06
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Expires: 1999-10-09
Abstract
Abstract A bowl-type luminaire reflector having a series of reflector segments which in turn consist of a stepped vertical series of reflector sections which are pre-focused to direct light in predetermined zones. The reflector sections have inwardly-convex curvature in the horizontal direction.
Inventors
- 👤 Theodore D. Dziubaty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:35
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/09; F21V7/0008
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
89 words
A luminaire reflector comprising a side-by-side series of vertically-curved reflector segments forming in combination at least a larger segment of a bowl-like reflector with reflective surfaces on the inside thereof and having a mouth at its upper end which forms the largest diameter thereof, each of said reflector segments consisting of a stepped vertical series of reflector sections pre-focused to direct light coming from a source within the bowl-like reflector out over said mouth into a predetermined radiation zone, said reflector sections having inwardly-convex curvature in the horizontal direction.
Claim 2
Dependent Claim
89 words
A luminaire reflector comprising a side-by-side series of vertically-curved reflector segments forming in combination at least a larger segment of a bowl-like reflector with reflective surfaces on the inside thereof and having a mouth at its upper end which forms the largest diameter thereof, each of said reflector segments consisting of a stepped vertical series of reflector sections pre-focused to direct light coming from a source within the bowl-like reflector out over said mouth into a predetermined radiation zone, said reflector sections having inwardly-convex curvature in the horizontal direction.
Claim 3
Dependent Claim
27 words
The luminaire reflector of claim 1 wherein each of said reflector sections has compound curvature in the form of inwardly-vertical-concave curvature in conjunction with said inwardly-horizontal-convex curvature.
Claim 4
Dependent Claim
14 words
The luminaire reflector of claim 2 wherein said reflector section vertical-concave curvature is parabolic.
Claim 5
Dependent Claim
12 words
The luminaire reflector of claim 3 wherein said horizontal-convex curvature is circular.
Claim 6
Dependent Claim
26 words
The luminaire reflector of claim 1, 2, 3 or 4 wherein said reflector sections are pre-focused to reflect light into said zone in substantially parallel rays.
Claim 7
Dependent Claim
18 words
The luminaire reflector of claim 4 wherein the overall mean vertical curvature of said reflector segments is parabolic.
Claim 8
Dependent Claim
32 words
The luminaire reflector of claim 1, 2, 3 or 4 wherein said sections are pre-focused to reflect light out over said mouth with maximum candle power at about 15° above the horizontal.
Claim 9
Dependent Claim
16 words
The luminaire reflector of claim 1 wherein said reflector segments are formed of highly polished metal.
Claim 10
Dependent Claim
12 words
The luminaire reflector of claim 8 wherein said segments are hydro-formed aluminum.
Claim 11
Dependent Claim
14 words
The luminaire reflector of claim 1 wherein said bowl-like reflector is molded of plastic.
Claim 12
Dependent Claim
22 words
The luminaire reflector of claim 1 wherein there are six to eight of said reflector sections in each of said reflector segments.
Claim 13
Dependent Claim
15 words
The luminaire reflector of claim 1 wherein said reflector segments form an entire bowl-like reflector.
Claim 14
Dependent Claim
14 words
The luminaire reflector of claim 12 including eleven to sixteen of said reflector segments.
Claim 15
Dependent Claim
17 words
The luminaire reflector of claim 1 including a light aperture in the bottom of said bowl-like reflector.
Claim 16
Dependent Claim
19 words
The luminaire reflector of claim 1 including means to retain at least one light source within said bowl-like reflector.
References Cited (Backward Citations)
US2089610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |