US3382770A
Expired / Lapsed
US
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Mechanism for controlling a fluid motor
Assignee: Parker Hannifin Corp
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Filing: 1964-10-01
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Granted: 1968-05-14
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 John F Berninger
- 👤 Walter W Davis
- 👤 Robert W Lanman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:20
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/15; F01; F01B; F01B17/00; F01B17/02; F02; F02B; F02B71/00; F03; F03C; F03C1/00; F03C1/08; F03C1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A MECHANISM FOR CONTROLLING A FLUID MOTOR COMPRISING A CYLINDER, A PISTON MOUNTED FOR MOVEMENT IN A BORE OF SAID CYLINDER, A PLUNGER MOUNTED FOR MOVEMENT BY AND RELATIVE TO SAID PISTON, A MEMBER MOUNTED FOR MOVEMENT BY SAID PLUNGER AT AN ANGLE RELATIVE THERETO, MEANS FOR PLACING OPPOSITE END PORTIONS OF SAID PLUNGER IN FLUID COMMUNICATION WITH SAID BORE WHEREBY FLUID PRESSURE IN SAID BORE ACTS UPON THE OPPOSITE END PORTIONS OF SAID PLUNGER, AND MEANS FOR AT ALL TIMES ISOLATING SAID MEMBER FROM THE FLUID PRESSURE IN SAID BORE.
Claim 2
Dependent Claim
91 words
A MECHANISM FOR CONTROLLING A FLUID MOTOR COMPRISING A CYLINDER, A PISTON MOUNTED FOR MOVEMENT IN A BORE OF SAID CYLINDER, A PLUNGER MOUNTED FOR MOVEMENT BY AND RELATIVE TO SAID PISTON, A MEMBER MOUNTED FOR MOVEMENT BY SAID PLUNGER AT AN ANGLE RELATIVE THERETO, MEANS FOR PLACING OPPOSITE END PORTIONS OF SAID PLUNGER IN FLUID COMMUNICATION WITH SAID BORE WHEREBY FLUID PRESSURE IN SAID BORE ACTS UPON THE OPPOSITE END PORTIONS OF SAID PLUNGER, AND MEANS FOR AT ALL TIMES ISOLATING SAID MEMBER FROM THE FLUID PRESSURE IN SAID BORE.
References Cited (Backward Citations)
US1056736A
Cited
US1264168A
Cited
CH197755A
Cited
US2949098A
Cited
FR1181985A
Cited
US3216329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |