Patent US4042818A successfully refreshed from Google Patents.
US4042818A
Expired / Lapsed
US
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Lamp assembly
Assignee: Magneti Marelli UK Ltd
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Filing: 1976-03-16
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Granted: 1977-08-16
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Expires: 1996-03-16
Abstract
Abstract A lamp assembly comprises a hollow body having two recesses therein, a bulbholder and a reflector in each recess, and a colorless transparent lens extending across the openings of the recesses. In one of the recesses is mounted a standard bulb and a filter element in the form of a domed cover surrounding the bulb. A neutrally colored light-absorbing material is incorporated into the filter element or is provided as a layer over a surface thereof remote from the bulb.
Inventors
- 👤 Stanley Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:24
CPC Classifications
F; F21; F21V; F21V9/00; F21V9/08; F21S; F21S43/00; F21S43/20; F21S43/255
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
100 words
A lamp assembly comprising a hollow body, a reflector in said hollow body, a colorless lens overlying said reflector, a bulbholder disposed in said hollow body, a bulb mounted in said bulbholder, a colored filter element mounted in said hollow body and completely covering said bulb, and a neutrally colored light-absorbing material completely covering a surface of said colored filter element remote from said bulb, said light-absorbing material reducing the intensity of externally incident light passing therethrough said colored filter element and thereby causing the color of said colored filter element visible externally of said light-absorbing material to be subdued.
Claim 2
Dependent Claim
100 words
A lamp assembly comprising a hollow body, a reflector in said hollow body, a colorless lens overlying said reflector, a bulbholder disposed in said hollow body, a bulb mounted in said bulbholder, a colored filter element mounted in said hollow body and completely covering said bulb, and a neutrally colored light-absorbing material completely covering a surface of said colored filter element remote from said bulb, said light-absorbing material reducing the intensity of externally incident light passing therethrough said colored filter element and thereby causing the color of said colored filter element visible externally of said light-absorbing material to be subdued.
Claim 3
Dependent Claim
26 words
The lamp assembly according to claim 1, wherein said light-absorbing material comprises a layer on said surface of said colored filter element remote from said bulb.
Claim 4
Dependent Claim
22 words
The lamp assembly according to claim 2, wherein said layer is made of sheet light-absorbing material which has been formed to shape.
Claim 5
Dependent Claim
21 words
The lamp assembly according to claim 2, wherein said layer is made of light-absorbing powder which has been molded to shape.
Claim 6
Dependent Claim
15 words
The lamp assembly according to claim 4, wherein said light-absorbing powder is an acrylic powder.
Claim 7
Dependent Claim
15 words
The lamp assembly according to claim 4, wherein said light-absorbing powder is a polycarbonate-based powder.
Claim 8
Dependent Claim
23 words
The lamp according to claim 1, wherein said colored filter element is in the form of a domed cover disposed over said bulb.
Claim 9
Dependent Claim
25 words
The lamp assembly according to claim 7, wherein said light-absorbing material comprises a layer on a surface of said domed cover remote from said bulb.
Claim 10
Dependent Claim
22 words
The lamp assembly according to claim 1, wherein said light-absorbing material has a light transmission factor of between 20% and 75% inclusive.
Claim 11
Dependent Claim
22 words
The lamp assembly according to claim 9, wherein said light-asborbing material has a light transmission factor of between 20% and 50% inclusive.
Claim 12
Dependent Claim
90 words
A lamp assembly comprising a hollow body, a reflector in said hollow body, a colorless lens overlying said reflector, a bulbholder disposed in said hollow body, a bulb mounted in said bulbholder, a colored filter element mounted in said hollow body and completely covering said bulb, and a neutrally colored light-absorbing material incorporated throughout said colored filter element, said light-absorbing material reducing the intensity of externally incident light passing through said colored filter element and thereby causing the color of said colored filter element visible externally thereof to be subdued.
Claim 13
Dependent Claim
90 words
A lamp assembly comprising a hollow body, a reflector in said hollow body, a colorless lens overlying said reflector, a bulbholder disposed in said hollow body, a bulb mounted in said bulbholder, a colored filter element mounted in said hollow body and completely covering said bulb, and a neutrally colored light-absorbing material incorporated throughout said colored filter element, said light-absorbing material reducing the intensity of externally incident light passing through said colored filter element and thereby causing the color of said colored filter element visible externally thereof to be subdued.
Claim 14
Dependent Claim
107 words
A lamp comprising a hollow body having at least two recesses therein, a reflector disposed in each recess, a bulbholder disposed in each recess, a bulb mounted in each bulbholder, a colorless lens extending over all of the recesses, a colored filter element mounted in one of the recesses and completely covering said bulb therein, and a neutrally colored light-absorbing material completely covering a surface of said colored filter element, said light-absorbing material reducing the intensity of externally incident light passing therethrough and through said colored filter element and thereby causing the color of said colored filter element visible externally of said light-absorbing material to be subdued.
Claim 15
Dependent Claim
107 words
A lamp comprising a hollow body having at least two recesses therein, a reflector disposed in each recess, a bulbholder disposed in each recess, a bulb mounted in each bulbholder, a colorless lens extending over all of the recesses, a colored filter element mounted in one of the recesses and completely covering said bulb therein, and a neutrally colored light-absorbing material completely covering a surface of said colored filter element, said light-absorbing material reducing the intensity of externally incident light passing therethrough and through said colored filter element and thereby causing the color of said colored filter element visible externally of said light-absorbing material to be subdued.
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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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |