US3288650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-resistant dry cell
Assignee: Union Carbide Corp
•
Filing: 1961-05-01
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Granted: 1966-11-29
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Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Reilly
- 👤 Johnson R Beckman
- 👤 Harry K Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:16
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A LEAK-RESISTANT DRY CELL COMPRISING, IN COMBINATION, A CUP ELECTRODE OF A CONSUMABLE METAL CONTAINING DEPOLARIZER MIX, ELECTROLYTE AND A CARBON ELECTRODE EMBEDDED WITHIN SAID DEPOLARIZER MIX; AND A PLASTIC CONTAINER ENCASING SAID CAP ELECRODE HAVING A TOP CLOSURE PROVIDED WITH GAS VENTING MEANS THEREIN, SAID TOP CLOSURE FITTING TIGHLY AROUND SAID CARBON ELECTRODE AND HAVING AN INTEGRALLY FORMED SUBSTANTIALLY TUBULAR SLEEVE MEMBER SURROUNDING BUT SPACED FROM SAID CARBON ELECTRODE PROVIDING A FREE SPACE BETWEEN SAID TUBULAR SLEEVE MEMBER AND SAID CARBON ELECTRODE AND AN EXUDATE CHAMBER SURROUNDING SAID TUBULAR SLEEVE MEMBER, SAID TUBULAR SLEEVE MEMBER BEING EMBEDDED WITHIN SAID DEPOLARIZER MIX AND DEFINING A BARRIER WHICH PROTECT SAID CARBON ELECTRODE FROM CONTACT BY LIQUID EXUDATE FROM SAID CELL, SAID TUBULAR SLEEVE MEMBER IN CONJUNCTION WITH SAID GAS VENTING MEANS IN SAID TOP CLOSURE PROVIDING A PATH FOR VENTING GAS FROM SAID CELL.
Claim 2
Dependent Claim
143 words
A LEAK-RESISTANT DRY CELL COMPRISING, IN COMBINATION, A CUP ELECTRODE OF A CONSUMABLE METAL CONTAINING DEPOLARIZER MIX, ELECTROLYTE AND A CARBON ELECTRODE EMBEDDED WITHIN SAID DEPOLARIZER MIX; AND A PLASTIC CONTAINER ENCASING SAID CAP ELECRODE HAVING A TOP CLOSURE PROVIDED WITH GAS VENTING MEANS THEREIN, SAID TOP CLOSURE FITTING TIGHLY AROUND SAID CARBON ELECTRODE AND HAVING AN INTEGRALLY FORMED SUBSTANTIALLY TUBULAR SLEEVE MEMBER SURROUNDING BUT SPACED FROM SAID CARBON ELECTRODE PROVIDING A FREE SPACE BETWEEN SAID TUBULAR SLEEVE MEMBER AND SAID CARBON ELECTRODE AND AN EXUDATE CHAMBER SURROUNDING SAID TUBULAR SLEEVE MEMBER, SAID TUBULAR SLEEVE MEMBER BEING EMBEDDED WITHIN SAID DEPOLARIZER MIX AND DEFINING A BARRIER WHICH PROTECT SAID CARBON ELECTRODE FROM CONTACT BY LIQUID EXUDATE FROM SAID CELL, SAID TUBULAR SLEEVE MEMBER IN CONJUNCTION WITH SAID GAS VENTING MEANS IN SAID TOP CLOSURE PROVIDING A PATH FOR VENTING GAS FROM SAID CELL.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |