US3351497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-spill vent plug
Assignee: Richardson Co
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Filing: 1962-12-10
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Granted: 1967-11-07
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Gordon B Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:23
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/30; H01M50/308; H01M50/60; H01M50/609; H01M50/627; H01M50/636; H01M50/645; H01M50/655; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A BATTERY CELL VENT PLUG COMPRISING A HOLLOW CUPLIKE BASE COMPOSED OF A CYLINDRICAL, CLOSED-END LOWER SECTION WITH A VENT OPENING IN THE BOTTOM THEREOF AND AN INTEGRAL OUTWARDLY FLARED ANNULAR UPPER SECTION PROVIDED WITH A LEDGE EXTENDING AROUND ITS INNER PERIPHERY, A PLURALITY OF CIRCUMFERENTIALLY SPACED UPWARDLY EXTENDING BOSSES DISPOSED AROUND THE INTERNAL WALL OF SAID BASE AT SUBSTANTIALLY THE JUNCTURE OF SAID SECTIONS, THE OUTER SIDE OF SAID BOSSES EXTENDING DOWNWARDLY AND OUTWARDLY, A CAP PROVIDED WITH A VENT OPENING SUPPORTING BY SAID LEDGE; AND A VALVE OF RELATIVELY HEAVY MASS DISPOSED WITHIN THE VENT PLUG HAVING A CIRCUMFERENTIAL SHOULDER PROVIDED WITH A DOWNWARDLY EXTENDING PERIPHERAL FLANGE, SAID VALVE BEING SUPPORTED BY SAID SHOULDER ON SAID BOSSES IN A POSITION INTERMEDIATE OF THE CAP AND THE BOTTOM OF THE BASE WITH SAID PERIPHERAL FLANGE BEING DISPOSED AROUND THE OUTER SIDES OF SAID BOSSES WHEREBY THE INTERIOR OF SAID PLUG IS DIVIDED INTO TWO CONNECTING COMPARTMENTS, SAID VALVE BEING CAPABLE OF MOVEMENT TOWARD THE UNDERSIDE OF THE CAP TO CLOSE ITS VENT OPENING WHEN THE VENT PLUG IS PARTIALLY OR WHOLLY INVERTED.
Claim 2
Dependent Claim
183 words
A BATTERY CELL VENT PLUG COMPRISING A HOLLOW CUPLIKE BASE COMPOSED OF A CYLINDRICAL, CLOSED-END LOWER SECTION WITH A VENT OPENING IN THE BOTTOM THEREOF AND AN INTEGRAL OUTWARDLY FLARED ANNULAR UPPER SECTION PROVIDED WITH A LEDGE EXTENDING AROUND ITS INNER PERIPHERY, A PLURALITY OF CIRCUMFERENTIALLY SPACED UPWARDLY EXTENDING BOSSES DISPOSED AROUND THE INTERNAL WALL OF SAID BASE AT SUBSTANTIALLY THE JUNCTURE OF SAID SECTIONS, THE OUTER SIDE OF SAID BOSSES EXTENDING DOWNWARDLY AND OUTWARDLY, A CAP PROVIDED WITH A VENT OPENING SUPPORTING BY SAID LEDGE; AND A VALVE OF RELATIVELY HEAVY MASS DISPOSED WITHIN THE VENT PLUG HAVING A CIRCUMFERENTIAL SHOULDER PROVIDED WITH A DOWNWARDLY EXTENDING PERIPHERAL FLANGE, SAID VALVE BEING SUPPORTED BY SAID SHOULDER ON SAID BOSSES IN A POSITION INTERMEDIATE OF THE CAP AND THE BOTTOM OF THE BASE WITH SAID PERIPHERAL FLANGE BEING DISPOSED AROUND THE OUTER SIDES OF SAID BOSSES WHEREBY THE INTERIOR OF SAID PLUG IS DIVIDED INTO TWO CONNECTING COMPARTMENTS, SAID VALVE BEING CAPABLE OF MOVEMENT TOWARD THE UNDERSIDE OF THE CAP TO CLOSE ITS VENT OPENING WHEN THE VENT PLUG IS PARTIALLY OR WHOLLY INVERTED.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |