US3629640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp base
Assignee: GTE Sylvania Inc
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Filing: 1970-01-02
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Granted: 1971-12-21
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Expires: 1990-01-02
Abstract
Abstract An electric lamp having a contact base, and a contact base for said lamp, the base having a metal shell closed at one end by a glass plug with a hole at its apex through which a lead-in wire can pass, a metal cylinder being fitted to the plug over the lead-in wire to be the center contact.
Inventors
- 👤 Emery Audesse
- 👤 Robert Wilbur Cookson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:46
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54; H01J5/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
An electric lamp comprising a sealed lamp bulb, a lead-in wire extending from one end thereof, a base affixed to said end of said bulb around said lead-in wire, said base having a shall one end of the shell being attached to said end of said lamp bulb, the other end of said shell Being closed by a glass plug having a protuberance extending outwardly therefrom with a hole in said protuberance through which a lead-in wire extends and is bent back against said protuberance, the latter having means for mechanically engaging a contact cap, and a contact cap engaged by said means and mechanically held firm in contact with said leadin wire and said protuberance.
Claim 2
Dependent Claim
116 words
An electric lamp comprising a sealed lamp bulb, a lead-in wire extending from one end thereof, a base affixed to said end of said bulb around said lead-in wire, said base having a shall one end of the shell being attached to said end of said lamp bulb, the other end of said shell Being closed by a glass plug having a protuberance extending outwardly therefrom with a hole in said protuberance through which a lead-in wire extends and is bent back against said protuberance, the latter having means for mechanically engaging a contact cap, and a contact cap engaged by said means and mechanically held firm in contact with said leadin wire and said protuberance.
Claim 3
Dependent Claim
21 words
The lamp of claim 1, in which the means for engaging a contact cap is a reentrant portion of said protuberance.
Claim 4
Dependent Claim
17 words
The lamp of claim 2, in which the reentrant portion is a conical wall on said protuberance.
Claim 5
Dependent Claim
22 words
The lamp of claim 1, in which the protuberance terminates in a flat portion against which the lead-in wire can be bent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |