Patent US4425607A successfully refreshed from Google Patents.
US4425607A
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US
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Sealed beam lamp unit
Assignee: General Electric Co
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Filing: 1982-02-05
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Granted: 1984-01-10
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Expires: 2002-02-05
Abstract
Abstract An adhesively sealed beam lamp unit including a lens and reflector having substantially rectangular peripheries and cooperating and opposing step-shaped sealing surfaces located approximately about the lens and reflector peripheries. Contact between the lens and reflector sealing surfaces is limited to one or more portions along the long sides of a pair of opposing steps. Additionally reservoirs, located on either side of the sealing surfaces, restrict excess adhesive from spreading onto areas affecting lamp unit optical performance or outer dimensions.
Inventors
- 👤 Bruce E. Shanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:56
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/30; F; F21; F21S; F21S41/00; F21S41/20; F21S41/29
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A sealed beam lamp unit comprising a lens and reflector having substantially rectangular peripheries, cooperating and opposing step-shaped sealing surfaces characterized by long and short sides and corners, located approximately about said peripheries, and spaced apart, so as to provide physical contact between said sealing surfaces limited to one or more portions along said long sides, and further including reservoirs located on either side of said sealing surfaces, with adhesive disposed thereon and therebetween except for said one or more portions which are in physical contact with each other, and said reservoirs containing excess adhesive which has oozed from between said sealing surfaces.
Claim 2
Dependent Claim
103 words
A sealed beam lamp unit comprising a lens and reflector having substantially rectangular peripheries, cooperating and opposing step-shaped sealing surfaces characterized by long and short sides and corners, located approximately about said peripheries, and spaced apart, so as to provide physical contact between said sealing surfaces limited to one or more portions along said long sides, and further including reservoirs located on either side of said sealing surfaces, with adhesive disposed thereon and therebetween except for said one or more portions which are in physical contact with each other, and said reservoirs containing excess adhesive which has oozed from between said sealing surfaces.
Claim 3
Dependent Claim
23 words
A sealed beam lamp unit as defined in claim 1 wherein said pair of opposing steps is located nearest the lamp unit interior.
Claim 4
Dependent Claim
23 words
A sealed beam lamp unit as defined in claim 1 wherein said pair of opposing steps is located nearest the lamp unit exterior.
Claim 5
Dependent Claim
55 words
A sealed beam lamp unit as defined in claim 1 wherein each step of said pair of opposing steps, having one or more portions contacting each other along said long sides, is biplanar comprising a lower plane defined by said corners and short sides thereof and a higher plane defined by said long sides thereof.
Claim 6
Dependent Claim
54 words
A sealed beam lamp unit as defined in claim 1 wherein one of said pair of opposing steps, having one or more portions contacting each other along said long sides, is biplanar comprising a lower plane defined by said corners and short sides thereof and a higher plane defined by said long sides thereof.
Claim 7
Dependent Claim
25 words
A sealed beam lamp unit as defined in claim 4 or 5 wherein the height between said planes ranges from approximately 0.1 to 0.4 millimeters.
Claim 8
Dependent Claim
16 words
A sealed beam lamp unit as defined in claim 1 wherein said steps are substantially level.
Claim 9
Dependent Claim
21 words
A sealed beam lamp unit as defined in claim 1 wherein said steps are substantially transverse to the lamp unit axis.
Claim 10
Dependent Claim
28 words
A sealed beam lamp unit as defined in claim 1 wherein said lens and reflector materials are each selected from the group consisting of glass, quartz and plastic.
References Cited (Backward Citations)
US4240131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |