Patent US3616783A successfully refreshed from Google Patents.
US3616783A
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US
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Vapor control valve
Assignee: Borg Warner Corp
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Filing: 1970-03-06
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Granted: 1971-11-02
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Expires: 1990-03-06
Abstract
Abstract A MULTIFUNCTION VALVE FOR CONTROLLING VAPOR FROM A FUEL TANK, OPENS AT A FIRST PRESSURE PERMITTING VAPOR FLOW TOWARD VAPOR COLLECTING APPARATUS AND REMAINS OPEN UNTIL THE PRESSURE HAS DROPPED TO A SECOND LOWER PRESSURE, IN ADDITION A CHECK VLAVE IS PROVIDED TO COMPENSATE FOR NEGATIVE PRESSURE OR LOWERING OF FUEL LEVEL, AND A SAFETY RELIEF VALVE IS PROVIDED TO PROTECT THE TANK AND SYSTEM FROM EXCESSIVE PRESSURE.
Inventors
- 👤 George D La Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:51
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/08; F02M25/0836; F16; F16K; F16K17/00; F16K17/18; F16K17/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |