US3278340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformation-safe dry cell
Assignee: VARTA Pertrix Union GmbH
•
Filing: 1963-05-27
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Granted: 1966-10-11
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Glaister S Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:58
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/317; H01M50/325; H01M6/00; H01M6/04; H01M6/06; H01M6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PRIMARY BATTERY CELL COMPRISING A CONTAINER; AN ACTIVE BATTERY ASSEMBLE INCLUDING A NEGATIVE ELECTRODE, AN ELECTROLYTE, AND A POSITIVE ELECTRODE ARRANGED IN THE CONTAINER; A COVER FOR THE CONTAINER, THE COVER DEFINING AN AIR SPACE WITH THE ACTIVE BATTERY ASSEMBLE IN THE CONTAINER; AND A TWO-PART VALVE MOUNTED IN THE AIR SPACE BETWEEN THE ACTIVE BATTERY ASSEMBLE AND THE CONTAINER COVER, THE TWO VALVE PARTS CONSISTING OF A VALVE SEAT AND AN IMPERMEABLE CHECK VALVE BODY NORMALLY BIASED INTO SEALING RELATIONSHIP WITH THE SEAT AND ADAPTED TO BE DISPLACED THEREFROM FOR VENTING TO THE INTERIOR THROUGH THE PERMEABLE COVER ONLY UPON DEVELOPMENT OF EXCESSIVE GAS PRESSURE IN THE ACTIVE BATTERY ASSEMBLE AND BEING COMPOSED OF INSULATING AND ELASTIC MATERIAL CHEMICALLY INERT TO THE ACTIVE BATTERY ASSEMBLE COMPONENTS.
Claim 2
Dependent Claim
128 words
A PRIMARY BATTERY CELL COMPRISING A CONTAINER; AN ACTIVE BATTERY ASSEMBLE INCLUDING A NEGATIVE ELECTRODE, AN ELECTROLYTE, AND A POSITIVE ELECTRODE ARRANGED IN THE CONTAINER; A COVER FOR THE CONTAINER, THE COVER DEFINING AN AIR SPACE WITH THE ACTIVE BATTERY ASSEMBLE IN THE CONTAINER; AND A TWO-PART VALVE MOUNTED IN THE AIR SPACE BETWEEN THE ACTIVE BATTERY ASSEMBLE AND THE CONTAINER COVER, THE TWO VALVE PARTS CONSISTING OF A VALVE SEAT AND AN IMPERMEABLE CHECK VALVE BODY NORMALLY BIASED INTO SEALING RELATIONSHIP WITH THE SEAT AND ADAPTED TO BE DISPLACED THEREFROM FOR VENTING TO THE INTERIOR THROUGH THE PERMEABLE COVER ONLY UPON DEVELOPMENT OF EXCESSIVE GAS PRESSURE IN THE ACTIVE BATTERY ASSEMBLE AND BEING COMPOSED OF INSULATING AND ELASTIC MATERIAL CHEMICALLY INERT TO THE ACTIVE BATTERY ASSEMBLE COMPONENTS.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |