US5143446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture with an improved light transmitting film
Assignee: LEXALITE INTERNATIONAL Corp A CORPORATION OF
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Filing: 1992-02-11
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Granted: 1992-09-01
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Expires: 2012-02-11
Abstract
Abstract An improved lighting fixture includes a light reflecting and/or light transmitting member for reflecting or transmitting visible light. A light transmitting film is disposed adjacent the light reflecting or transmitting member. The light transmitting film is formed of a glutarimide acrylic copolymer. The glutarimide acrylic copolymer film provides protection to the light reflecting and/or transmitting member from damaging effects of ultraviolet radiation and is substantially resistant to ultraviolet radiation.
Inventors
- 👤 Josh T. Barnes
- 👤 Thomas F. Barnes
- 👤 Earl E. Smith
- 👤 Dale A. Troppman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:34
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B27/06; B32B27/08; B32B27/36; B32B27/365; B32B2307/00; B32B2307/40; B32B2307/41; B32B2307/70; B32B2307/71; B32B2369/00; B32B2551/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
An improved lighting fixture including a light source comprising: an enclosure for said light source including light reflecting and/or light transmitting means for reflecting and/or transmitting visible light; a light transmitting film disposed adjacent and between said light source and said light reflecting and/or light transmitting means; said light transmitting film being formed of a glutarimide acrylic copolymer.
Claim 2
Dependent Claim
58 words
An improved lighting fixture including a light source comprising: an enclosure for said light source including light reflecting and/or light transmitting means for reflecting and/or transmitting visible light; a light transmitting film disposed adjacent and between said light source and said light reflecting and/or light transmitting means; said light transmitting film being formed of a glutarimide acrylic copolymer.
Claim 3
Dependent Claim
24 words
An improved lighting fixture as recited in claim 1 wherein said light transmitting film has a thickness in a range between 0.010-inch and 0.040-inch.
Claim 4
Dependent Claim
19 words
An improved lighting fixture as recited in claim 1 wherein said light transmitting film is opaque to ultraviolet radiation.
Claim 5
Dependent Claim
55 words
A lighting fixture including a light transmitting film located between a light source and a light reflecting and/or light transmitting member of said lighting fixture, said light transmitting film comprising: a glutarimide acrylic copolymer film disposed adjacent said light reflecting and/or light transmitting member; and said light transmitting film being substantially opaque to ultraviolet radiation.
Claim 6
Dependent Claim
55 words
A lighting fixture including a light transmitting film located between a light source and a light reflecting and/or light transmitting member of said lighting fixture, said light transmitting film comprising: a glutarimide acrylic copolymer film disposed adjacent said light reflecting and/or light transmitting member; and said light transmitting film being substantially opaque to ultraviolet radiation.
Claim 7
Dependent Claim
28 words
A light fixture as recited in claim 4 wherein said light transmitting film is formed to approximate the contour of said adjacent light reflecting and/or light transmitting member.
Claim 8
Dependent Claim
23 words
A light fixture as recited in claim 4 wherein said light transmitting film has a thickness in a range between 0.010-inch and 0.040-inch.
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) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |