US3674385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid vane motor
Assignee: Motors Liquidation Co
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Filing: 1970-08-28
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Granted: 1972-07-04
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Expires: 1990-08-28
Abstract
Abstract A FLUID MOTOR HAVING A ROTATABLE OUTER RING AND A STATIONARY INNER CAM MEMBER. A PLURALITY OF VANES ARE SLIDABLY DISPOSED IN THE RING MEMBER AND EXTEND INWARDLY THEREFROM INTO FLUID CHAMBERS FORMED BETWEEN THE RING AND CAM. A FLUID OPERATED PISTON WITH DIFFERENTIAL AREAS ON THE ENDS IS ASSOCIATED WITH EACH VANE MEMBER SUCH THAT THE PRESENCE OF FLUID PRESSURE TO DRIVE THE MOTOR OPERATES ON THE PISTON TO MOVE THE VANES INWARDLY TO ENGAGE THE SURFACE OF THE CAM THUS FORMING CLOSED FLUID CHAMBER BETWEEN THE RING AND THE CAM.
Inventors
- 👤 Robert P Rohde
- 👤 Clarence E Welsh
- 👤 Hans Engelhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |