US4261029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting device with rotatable reflector
Assignee: SABIR 156 BOULEVARD HAUSSMAN A CORP OF
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Filing: 1979-02-05
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Granted: 1981-04-07
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Expires: 1999-02-05
Abstract
Abstract A lighting device with rotating reflector in which the lamp is eccentric so as to obtain an asymmetrical luminous flux. The said device comprises a main reflector 1, a lamp 7 which is eccentric with respect to the reflector 1 and an additional convex-cylindrical reflector 4 mounted perpendicularly to the plane crossing the rotating axis of the reflector 1 and crossing the lamp 7, a further reflector 11 extending from the reflector 1 on the lamp side.
Inventors
- 👤 Noel Mousset
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:07
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/02; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086; F21V14/00; F21V14/02; F21V14/04; F21V7/00; F21V7/0025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A lighting device comprising-a main concave reflector formed as a surface of revolution around a vertical axis, a support mounted inside said main reflector for rotation about said axis, the support comprising a lamp socket for a lamp which is eccentric with respect to said axis, whereby a maximal concentration of light is obtained in the direction opposite the eccentricity of the lamp with respect to said axis, and a support arm diametrically opposed to said socket with said support arm and said lamp socket being in a vertical diametrical plane including said axis, a second reflector of generally convex cylindrical shape and whose generatrices are perpendicular to said vertical diametrical plane, said second reflector being adapted for rotation with the lamp about said axis and for reflecting the light toward the direction of maximal concentration of light.
Claim 2
Dependent Claim
138 words
A lighting device comprising-a main concave reflector formed as a surface of revolution around a vertical axis, a support mounted inside said main reflector for rotation about said axis, the support comprising a lamp socket for a lamp which is eccentric with respect to said axis, whereby a maximal concentration of light is obtained in the direction opposite the eccentricity of the lamp with respect to said axis, and a support arm diametrically opposed to said socket with said support arm and said lamp socket being in a vertical diametrical plane including said axis, a second reflector of generally convex cylindrical shape and whose generatrices are perpendicular to said vertical diametrical plane, said second reflector being adapted for rotation with the lamp about said axis and for reflecting the light toward the direction of maximal concentration of light.
Claim 3
Dependent Claim
21 words
A lighting device as claimed in claim 1, wherein said lamp socket is mounted for movement within said vertical diametrical plane.
Claim 4
Dependent Claim
25 words
A lighting device as claimed in claim 2, wherein said lamp socket is mounted for movement on an axis perpendicular to said vertical diametrical plane.
Claim 5
Dependent Claim
28 words
A lighting device as claimed in any one of claims 1 to 3, wherein the second reflector is mounted for rotation about an axis parallel to its generatrices.
Claim 6
Dependent Claim
33 words
A lighting device as claimed in any one of claims 1 to 3, which includes an auxiliary reflector extending from the main reflector, said auxiliary reflector being diametrically opposed to the second reflector.
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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |