Patent US4142026A successfully refreshed from Google Patents.
US4142026A
Expired / Lapsed
US
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Dry cell adapter
Assignee: Individual
•
Filing: 1977-04-22
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Granted: 1979-02-27
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Expires: 1997-04-22
Abstract
Abstract An adapter consisting of a tube with one mode using a metallic base that provides a support for the electrical conducting spring whose function is to complete an electrical circuit between base of tube and base of "C" cell battery that will be in contact with spring when adapter is in use.
Inventors
- 👤 Macario J. Zordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:26
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/20; H01M50/204; H01M50/207; H01M50/213; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
142 words
A dry cell adapter comprising a non-conductive cylindrical tube open at one end and closed at the other end by a hollow interior metallic closure including two parts each part having a bottom and a surrounding rim, said rims being fitted together forming the hollow closure, the bottom of one part being externally flush with an end of the cylinder, said tube having external dimensions approximately equal to those of a size D cell with its inside diameter permitting snug insertion of a size C cell, the bottom of the other closure part having a protuberance in its center of sufficient area and height, interior of said tube, permitting reliable electrical connection of said closure to permit electrical continuity for a distance equal to the difference in length between that of a size D cell and that of a size C cell.
Claim 2
Dependent Claim
142 words
A dry cell adapter comprising a non-conductive cylindrical tube open at one end and closed at the other end by a hollow interior metallic closure including two parts each part having a bottom and a surrounding rim, said rims being fitted together forming the hollow closure, the bottom of one part being externally flush with an end of the cylinder, said tube having external dimensions approximately equal to those of a size D cell with its inside diameter permitting snug insertion of a size C cell, the bottom of the other closure part having a protuberance in its center of sufficient area and height, interior of said tube, permitting reliable electrical connection of said closure to permit electrical continuity for a distance equal to the difference in length between that of a size D cell and that of a size C cell.
Claim 3
Dependent Claim
16 words
In combination, a size C cell battery and dry cell adapter as claimed in claim 1.
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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |