Patent CA537149A successfully refreshed from Google Patents.
Patent US4044277A successfully refreshed from Google Patents.
US4044277A
Expired / Lapsed
US
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Mechanically assembled base for electric lamps
Assignee: General Electric Co
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Filing: 1976-05-24
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Granted: 1977-08-23
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Expires: 1996-05-24
Abstract
Abstract A mechanically assembled base is disclosed in which the insulator portion comprises an undercut for supporting the portion of the base shell holding the insulator in place.
Inventors
- 👤 William J. Komyati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:24
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/50; H01J5/54; H01J5/58; H01J5/60
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A mechanically assembled base for an electric lamp comprising: a base shell having an inwardly tapered end portion; a hollow insulator having a cylindrical portion having an annular groove and a conical portion having the base thereof merging with said cylindrical portion, the taper of said conical portion being approximately the same as the taper of the end portion of said shell, said conical portion terminating in a plateau; conductive contact means positioned on said plateau and attached to said insulator; and means for engaging said groove for attaching said insulator to said shell.
Claim 2
Dependent Claim
94 words
A mechanically assembled base for an electric lamp comprising: a base shell having an inwardly tapered end portion; a hollow insulator having a cylindrical portion having an annular groove and a conical portion having the base thereof merging with said cylindrical portion, the taper of said conical portion being approximately the same as the taper of the end portion of said shell, said conical portion terminating in a plateau; conductive contact means positioned on said plateau and attached to said insulator; and means for engaging said groove for attaching said insulator to said shell.
Claim 3
Dependent Claim
13 words
The base as set forth in claim 1 wherein said shell is threaded.
Claim 4
Dependent Claim
25 words
The base as set forth in claim 2 wherein said tapered end portion of said shell overlies part of the conical portion of said insulator.
Claim 5
Dependent Claim
26 words
The base as set forth in claim 3 wherein said engaging means comprises a bead located in said shell between said flange and said opposite end.
Claim 6
Dependent Claim
22 words
The base as set forth in claim 3 wherein the end of said flange is curved inward to form a reentrant opening.
Claim 7
Dependent Claim
20 words
The base as set forth in claim 5 wherein said engaging means comprises a bead formed in said reentrant opening.
Claim 8
Dependent Claim
16 words
The base as set forth in claim 5 wherein said engaging means comprises a snap ring.
Claim 9
Dependent Claim
28 words
The base as set forth in claim 7 wherein the diameter of the base of said conical portion exceeds the diameter of said cylindrical portion of said insulator.
Claim 10
Dependent Claim
22 words
The base as set forth in claim 5 wherein said engaging means comprises the end of said flange forming said reentrant opening.
Claim 11
Dependent Claim
28 words
The base as set forth in claim 9 wherein the diameter of the base of said conical portion exceeds the diameter of said cylindrical portion of said insulator.
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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |