Patent US4450513A successfully refreshed from Google Patents.
US4450513A
Expired / Lapsed
US
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Lighting fixture for opposite direction reflection
Assignee: Sterner Lighting Systems Inc
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Filing: 1982-01-25
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Granted: 1984-05-22
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Expires: 2002-01-25
Abstract
Abstract A light fixture having a reflector for directing light beams generally in a first direction, such as an indirect lighting reflector, which has a tab that is partially punched out and bent to reflect a restricted spot of light in an opposite direction. This permits the highlighting or illumination of an area on the back side of the reflector without extra bulbs and without ugly add-on reflectors.
Inventors
- 👤 Arthur R. Guggemos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:31
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/0008; F21V7/0016; F21S; F21S6/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
A light fixture comprising: a primary reflector having a wall, the wall having a reflector surface defining a cavity, the cavity having an opening facing generally in a first direction, the primary reflector being positioned for directing light beams from an illumination source in the first direction and having a second opening smaller than the cavity defined through the wall; and a secondary reflector positioned within the cavity at a location so as to direct light beams from the same illumination source in a second direction generally opposite from the first direction through the second smaller opening through the wall of the primary reflector.
Claim 2
Dependent Claim
104 words
A light fixture comprising: a primary reflector having a wall, the wall having a reflector surface defining a cavity, the cavity having an opening facing generally in a first direction, the primary reflector being positioned for directing light beams from an illumination source in the first direction and having a second opening smaller than the cavity defined through the wall; and a secondary reflector positioned within the cavity at a location so as to direct light beams from the same illumination source in a second direction generally opposite from the first direction through the second smaller opening through the wall of the primary reflector.
Claim 3
Dependent Claim
17 words
The fixture of claim 1 and an illumination source positioned within the cavity of the primary reflector.
Claim 4
Dependent Claim
30 words
The fixture of claim 1 wherein the secondary reflector is mounted on the wall of the primary reflector adjacent the second smaller opening in the wall of the primary reflector.
Claim 5
Dependent Claim
20 words
The fixture of claim 1 wherein the secondary reflector comprises a tab formed from the wall of the primary reflector.
Claim 6
Dependent Claim
102 words
The fixture of claim 4 wherein the secondary reflector is a tab slit from the wall of the primary reflector and remaining attached to the wall along one edge of the tab, the second smaller opening in the wall being the area of the wall cut out to form the tab, the end of the tab being bent away from the wall so that a portion of the light beams from an illumination source within the cavity area of the primary reflector are directed by a reflector surface on the tab through the smaller opening in the wall of the primary reflector.
Claim 7
Dependent Claim
89 words
The fixture of claim 1 further comprising: a housing having side walls and a bottom wall attached to the side walls, the side walls of the housing defining a generally open top, the primary reflector being mounted in the housing on the side walls so that light beams are directed by the primary reflector in the generally first direction through the open top of the housing, and the bottom wall of the housing having an aperture aligned with the second smaller opening in the wall of the primary reflector.
Claim 8
Dependent Claim
21 words
The fixture of claim 1 wherein a fresnel lens is positioned in the aperture of the bottom wall of the housing.
Claim 9
Dependent Claim
109 words
A light fixture comprising: a single light source; a primary reflector having a wall with one surface thereof being light-reflective and defining a cavity, the cavity having an opening facing generally in a first direction, the primary reflector being positioned for reflecting light beams from the light source in the first direction and having a second opening smaller than the cavity defined through the wall; and a secondary reflector having a light-reflective surface and being positioned within the cavity to reflect light beams from the light source in a second direction generally opposite from the first direction through the second smaller opening of the wall of the primary reflector.
Claim 10
Dependent Claim
109 words
A light fixture comprising: a single light source; a primary reflector having a wall with one surface thereof being light-reflective and defining a cavity, the cavity having an opening facing generally in a first direction, the primary reflector being positioned for reflecting light beams from the light source in the first direction and having a second opening smaller than the cavity defined through the wall; and a secondary reflector having a light-reflective surface and being positioned within the cavity to reflect light beams from the light source in a second direction generally opposite from the first direction through the second smaller opening of the wall of the primary reflector.
References Cited (Backward Citations)
US335979A
Cited
US1471625A
Cited
US1457426A
Cited
US1948516A
Cited
US2128470A
Cited
US3701898A
Cited
US4174533A
Cited
US4300185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |