Patent US4100463A successfully refreshed from Google Patents.
US3201284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way vent valve for batteries
Assignee: Gould National Batteries Inc
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Filing: 1962-11-05
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Granted: 1965-08-17
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Grenville B Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:54
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/308; H01M50/342; F; F16; F16K; F16K15/00; F16K15/14; F16K15/141; F16K15/142; H01M50/317; H01M50/325; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN COMBINATION, A NORMALLY CLOSED BATTERY CONTAINER SUBJECT TO VARIABLE INTERNAL GAS PRESSURE, AND A PRESSURE VENT VALVE COMPRISING A TUBULAR BODY HAVING A LOWER END PORTION COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER AND A NORMALLY CLOSED UPPER END PORTION EXTENDING TO THE EXTERIOR OF SAID CONTAINER AND FORMED WITH AN ANNULAR GROOVE IN ITS OUTER PERIPHERY, A PLURALITY OF FLEXIBLE ELASTIC SEALING RINGS CONFINED UNDER LATERAL COMPRESSION IN SAID GROOVE, EACH OF SAID SEALING RINGS HAVING A VALVE SEAT SURFACE CONTACTING A VALVE SEAT SURFACE OF A SECOND SEALING RING, AND A PASSAGE FOR GAS EXTENDING THROUGH SAID UPPER END PORTION OF SAID BODY TO THE EXTERIOR THEREOF ADJACENT TO INTERIOR OF SAID SEALING RINGS, SAID VALVE SEAT SURFACES BEING SEPARABLE TO VENT THE INTERIOR OF SAID CONTAINER UPON THE DEVELOPMENT OF PREDETERMINED GAS PRESSURE DIFFERENTIALLS AT THE EXTERIOR SIDES OF SAID SEALING RINGS.
Claim 2
Dependent Claim
146 words
IN COMBINATION, A NORMALLY CLOSED BATTERY CONTAINER SUBJECT TO VARIABLE INTERNAL GAS PRESSURE, AND A PRESSURE VENT VALVE COMPRISING A TUBULAR BODY HAVING A LOWER END PORTION COMMUNICATING WITH THE INTERIOR OF SAID CONTAINER AND A NORMALLY CLOSED UPPER END PORTION EXTENDING TO THE EXTERIOR OF SAID CONTAINER AND FORMED WITH AN ANNULAR GROOVE IN ITS OUTER PERIPHERY, A PLURALITY OF FLEXIBLE ELASTIC SEALING RINGS CONFINED UNDER LATERAL COMPRESSION IN SAID GROOVE, EACH OF SAID SEALING RINGS HAVING A VALVE SEAT SURFACE CONTACTING A VALVE SEAT SURFACE OF A SECOND SEALING RING, AND A PASSAGE FOR GAS EXTENDING THROUGH SAID UPPER END PORTION OF SAID BODY TO THE EXTERIOR THEREOF ADJACENT TO INTERIOR OF SAID SEALING RINGS, SAID VALVE SEAT SURFACES BEING SEPARABLE TO VENT THE INTERIOR OF SAID CONTAINER UPON THE DEVELOPMENT OF PREDETERMINED GAS PRESSURE DIFFERENTIALLS AT THE EXTERIOR SIDES OF SAID SEALING RINGS.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |