US3253958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell stack with torsion bar seal follow-up
Assignee: RTX Corp
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Filing: 1962-02-28
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Granted: 1966-05-31
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Byron H Shinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:16
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/24; H01M8/2465; H01M8/247; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE COMBINATION WITH A PLURALITY OF FUEL CELLS ARRANGED IN STACKED RELATION AND EACH HAVING PERIPHERAL RINGS THEREON, SEALS LOCATED BETWEEN ADJACENT RINGS TO RETAIN THE ELECTROLYTE IN THE INDIVIDUAL CELLS, CLAMPING MEANS FOR HOLDING THE STACK OF FUEL CELLS TOGETHER AND SPRING MEANS AT LEAST AT ONE END OF THE STACK BETWEEN SAID CLAMPING MEANS AND THE PERIPHERAL RINGS, SAID SPRING MEANS COMPRISING A CENTRAL SUPPORT SPACED FROM THE END OF SAID STACK OF CELLS AND A PLURALITY OF TORSION BARS CONNECTED TO SAID SUPPORT AND EXTENDING RADIALLY THEREFROM, SAID TORSION BARS INCLUDING MEANS ENGAGING ONLY WITH SAID STACK OF CELLS
Claim 2
Dependent Claim
102 words
THE COMBINATION WITH A PLURALITY OF FUEL CELLS ARRANGED IN STACKED RELATION AND EACH HAVING PERIPHERAL RINGS THEREON, SEALS LOCATED BETWEEN ADJACENT RINGS TO RETAIN THE ELECTROLYTE IN THE INDIVIDUAL CELLS, CLAMPING MEANS FOR HOLDING THE STACK OF FUEL CELLS TOGETHER AND SPRING MEANS AT LEAST AT ONE END OF THE STACK BETWEEN SAID CLAMPING MEANS AND THE PERIPHERAL RINGS, SAID SPRING MEANS COMPRISING A CENTRAL SUPPORT SPACED FROM THE END OF SAID STACK OF CELLS AND A PLURALITY OF TORSION BARS CONNECTED TO SAID SUPPORT AND EXTENDING RADIALLY THEREFROM, SAID TORSION BARS INCLUDING MEANS ENGAGING ONLY WITH SAID STACK OF CELLS
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |