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US2707200A
Expired / Lapsed
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Leak-resistant dry cell
Assignee: Union Carbide Canada Ltd
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Filing: 1954-03-15
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Granted: 1955-04-26
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Lewis F Urry
- 👤 William L Kennedy
- 👤 Howard M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:32
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A LEAK-RESISTANT DRY CELL COMPRISING IN PART A CONTAINER- ANODE OF CONSUMABLE METAL, A NON-METALLIC SHEATH HAVING A MOISTURE BARRIER EMBRACING SAID CONTAINERANODE, A METALLIC BOTTOM PLATE LOCKED TO SAID SHEATH, A TOP CLOSURE FOR SAID CONTAINER-ANODE IN LIQUID-TIGHT ENGAGEMENT WITH SAID SHEATH, AND AN ELECTRICALLY CONDUCTIVE STRIP BETWEEN SAID SHEATH AND SAID CONTAINER-ANODE MAKING ELECTRICAL CONTACT THEREWITH AND MECHANICALLY LOCKED INTO ENGAGEMENT WITH SAID BOTTOM PLATE.
Claim 2
Dependent Claim
67 words
A LEAK-RESISTANT DRY CELL COMPRISING IN PART A CONTAINER- ANODE OF CONSUMABLE METAL, A NON-METALLIC SHEATH HAVING A MOISTURE BARRIER EMBRACING SAID CONTAINERANODE, A METALLIC BOTTOM PLATE LOCKED TO SAID SHEATH, A TOP CLOSURE FOR SAID CONTAINER-ANODE IN LIQUID-TIGHT ENGAGEMENT WITH SAID SHEATH, AND AN ELECTRICALLY CONDUCTIVE STRIP BETWEEN SAID SHEATH AND SAID CONTAINER-ANODE MAKING ELECTRICAL CONTACT THEREWITH AND MECHANICALLY LOCKED INTO ENGAGEMENT WITH SAID BOTTOM PLATE.
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) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |