Patent US3664632A successfully refreshed from Google Patents.
US3664632A
Expired / Lapsed
US
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Locking means for a valve operating plunger
Assignee: Bendix Westinghouse Automotive Air Brake Co
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Filing: 1970-12-10
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Granted: 1972-05-23
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Expires: 1990-12-10
Abstract
Abstract IN A VALVE DEVICE OF THE TYPE HAVING A RECIPROCABLE MANUALLY OPERABLE PLUNGER AND A KNOB CARRIED THEREBY, THE KNOB AND PLUNGER BEING MOBABLE DOWNWARDLY WITHIN A CASING A PREDETERMINED DISTANCE FOR OPERATING A VALVE MEMBER TOGETHER WITH A LOCKING DEVICE COOPERATING WITH THE CASING FOR NORMALLY PREVENTING MOVEMENT OF SAID PLUNGER TO SAID PREDETERMINED DISTANCE, THE LOCKING DEVICE BEING MOVABLE TO A RELEASED POSITION BY RELATIVE MOVEMENT OF THE KNOB WITH RESPECT TO THE PLUNGER.
Inventors
- 👤 Harry M Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:58
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/022; F16K35/025
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |