Patent US4464708A successfully refreshed from Google Patents.
US4464708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: Bron Elektronik AG
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Filing: 1982-09-07
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Granted: 1984-08-07
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Expires: 2002-09-07
Abstract
Abstract A lighting fixture which comprises a light reflecting fixture case having a transparent wall disposed next to an opening to provide light outflow, a light source disposed in the fixture case, and a diffuser wall covering the light outflow providing opening of the case and which is attached to the transparent wall and which reaches to at least the outer face of the transparent case wall. Thus the face of the diffuser wall can completely be used as light providing surface. Preferably, the transparent case wall is covered with a thin layer of reflecting and opaque material.
Inventors
- 👤 Armin Nussli
- 👤 Hans-Peter Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:47
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; F; F21; F21S; F21S2/00; F21V; F21V7/00; F21W; F21W2131/00; F21W2131/40; F21W2131/406; F21Y; F21Y2103/00; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A lighting fixture comprising a light reflecting fixture case having a case wall made of transparent material, which is coated on the outside with a reflecting and opaque covering, and where the case wall is disposed next to an opening to provide light outflow; light source disposed in the fixture case; and a diffuser wall covering the light outflow, providing opening of the case and attached to the transparent wall such as to join with the edge of the diffuser wall on all sides flush to the case wall and the case wall reaching to at least the outer face of the adjacent transparent case wall.
Claim 2
Dependent Claim
106 words
A lighting fixture comprising a light reflecting fixture case having a case wall made of transparent material, which is coated on the outside with a reflecting and opaque covering, and where the case wall is disposed next to an opening to provide light outflow; light source disposed in the fixture case; and a diffuser wall covering the light outflow, providing opening of the case and attached to the transparent wall such as to join with the edge of the diffuser wall on all sides flush to the case wall and the case wall reaching to at least the outer face of the adjacent transparent case wall.
Claim 3
Dependent Claim
15 words
The lighting fixture according to claim 1 wherein the light source is a flash lamp.
Claim 4
Dependent Claim
21 words
The lighting fixture according to claim 1 wherein the diffuser wall is attached to the front face of the case wall.
Claim 5
Dependent Claim
22 words
The lighting fixture according to claim 3 wherein the diffuser wall is adhesively attached to the front face of the case wall.
Claim 6
Dependent Claim
28 words
The lighting fixture according to claim 3 wherein the adjacently disposed faces of the case wall and the diffuser wall are mitred to each other along joint edges.
Claim 7
Dependent Claim
27 words
The lighting fixture according to claim 3 wherein the case wall with its front edges makes a butt connection to the inner face of the diffuser wall.
Claim 8
Dependent Claim
16 words
The lighting fixture according to claim 1 wherein the case wall comprises a transparent plastic material.
Claim 9
Dependent Claim
17 words
The lighting fixture according to claim 1 wherein the diffuser wall comprises a white opal plastic material.
Claim 10
Dependent Claim
36 words
The lighting fixture according to claim 1 wherein the outer face of the case wall is provided with a reflecting layer and where this reflecting layer is covered from the outside by an opaque covering layer.
Claim 11
Dependent Claim
18 words
The lighting fixture according to claim 9 wherein the reflecting layer and the covering layer are colored layers.
Claim 12
Dependent Claim
37 words
The lighting fixture according to claim 10 wherein the reflecting layer and the covering layer are formed by the outer faces of a plastic foil, which is solidly attached to the outer face of the case wall.
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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |