Patent US3236157A successfully refreshed from Google Patents.
US3236157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid motors
Assignee: GUNVER Manufacturing CO
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Filing: 1962-03-15
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Granted: 1966-02-22
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Walter C Lovell
- 👤 Iii Edmund S Lee
- 👤 Peter J Gunas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:23
CPC Classifications
F; F03; F03C; F03C1/00; F03C1/007; F03C1/0073; F03C1/0076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A FLUID MOTOR COMPRISING A CYLINDER, A PISTON RECIPROCABLE THEREIN, A SEALING MEMBER RECIPROCBLE IN SAID CYLINDER AND ENGAGEABLE WITH ONE SIDE OF SAID PISTON, AN INLET FOR INTRODUCING PRESSURIZED FLUID INTO THE SEALING MEMBER END OF SAID CYLINDER TO DISPLACE THE SEALING MEMBER AND PISTON TOWARD THE PISTON END OF THE CYLINDER, DIS CHARGE PASSAGEWAY MEANS FOR EXHAUSTING FLUID FROM THE SEALING MEMBER END OF THE CYLINDER, SAID DISCHARGE PASSAGEWAY MEANS BEING SEALED BY ENGAGEMENT OF THE SEALING MEMBER AND PISTON, RESILIENT MEANS ACTING ON SAID PISTON AND OPPOSING ITS MOVEMENT TOWARD THE PISTON END OF THE CYLINDER, MEAND DISPOSED WITHIN THE SEALING MEMBER END OF THE CYLINDER FOR LIMITING MOVEMENT OF THE SEALING MEMBER TOWARDS THE PISTON END OF THE CYLINDER TO DISENGAGE THE SEALING MEMBER FROM THE PISTON AND RETURNING THE SEALING MEMBER TOWARDS THE SEALING MEMBER END OF THE CYLINDER IN SPACED RELATIONSHIP FROM SAID PISTON, SAID RESILIENT MEANS PROVIDING THE SOLE MEANS FOR LIMITING MOVEMENT OF THE PISTON AFTER THE SEALING MEMBER IS DISENGAGED AND RETURNING THE PISTON TOWARD THE SEALING MEMBER END OF THE CYLINDER TO REENGAGE THE SEALING MEMBER FOR A SUBSEQUENT CYCLE OF OPERATION.
Claim 2
Dependent Claim
192 words
A FLUID MOTOR COMPRISING A CYLINDER, A PISTON RECIPROCABLE THEREIN, A SEALING MEMBER RECIPROCBLE IN SAID CYLINDER AND ENGAGEABLE WITH ONE SIDE OF SAID PISTON, AN INLET FOR INTRODUCING PRESSURIZED FLUID INTO THE SEALING MEMBER END OF SAID CYLINDER TO DISPLACE THE SEALING MEMBER AND PISTON TOWARD THE PISTON END OF THE CYLINDER, DIS CHARGE PASSAGEWAY MEANS FOR EXHAUSTING FLUID FROM THE SEALING MEMBER END OF THE CYLINDER, SAID DISCHARGE PASSAGEWAY MEANS BEING SEALED BY ENGAGEMENT OF THE SEALING MEMBER AND PISTON, RESILIENT MEANS ACTING ON SAID PISTON AND OPPOSING ITS MOVEMENT TOWARD THE PISTON END OF THE CYLINDER, MEAND DISPOSED WITHIN THE SEALING MEMBER END OF THE CYLINDER FOR LIMITING MOVEMENT OF THE SEALING MEMBER TOWARDS THE PISTON END OF THE CYLINDER TO DISENGAGE THE SEALING MEMBER FROM THE PISTON AND RETURNING THE SEALING MEMBER TOWARDS THE SEALING MEMBER END OF THE CYLINDER IN SPACED RELATIONSHIP FROM SAID PISTON, SAID RESILIENT MEANS PROVIDING THE SOLE MEANS FOR LIMITING MOVEMENT OF THE PISTON AFTER THE SEALING MEMBER IS DISENGAGED AND RETURNING THE PISTON TOWARD THE SEALING MEMBER END OF THE CYLINDER TO REENGAGE THE SEALING MEMBER FOR A SUBSEQUENT CYCLE OF OPERATION.
References Cited (Backward Citations)
US165027A
Cited
US583802A
Cited
US807452A
Cited
US890065A
Cited
US1104071A
Cited
US1132063A
Cited
US1072701A
Cited
US1173326A
Cited
US1224008A
Cited
US1369256A
Cited
US1861042A
Cited
US1910644A
Cited
US2620162A
Cited
US2758817A
Cited
US2943603A
Cited
US2813516A
Cited
US2813514A
Cited
US2873093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |