US3274946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Individual
•
Filing: 1964-04-13
•
Granted: 1966-09-27
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Edward E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
F; F01; F01B; F01B13/00; F01B13/04; F01B13/06; F01B13/068; F01B1/00; F01B1/06; F01B1/0641; F01B1/0644; F01B1/0655; F01B1/0675; F01B1/0686; F01B1/0689
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A HYDRAULIC PUMP AND MOTOR COMPRISING A HOUSING, A CYLINDRICAL RACE MOUNTED WITHIN SAID HOUSING, A SPINDLE FIXED TO SAID HOUSING, A ROTOR ROTATABLY RECEIVED ON SAID SPINDLE FOR ROTATION WITHIN SAID RACE ABOUT AN AXIS LOCATED ECCENTRICALLY RELATIVE TO THE AXIS OF SAID CYLINDRICAL RACE, SAID ROTOR HAVING A PLURALITY OF RADIAL SPOKES WITH A RADIAL PASSAGE THROUGH EACH OF SAID SPOKES EACH OF SAID SPOKES HAVING A ROUNDED BALL SHAPE AT ITS DISTAL END, SAID SPINDLE HAVING A PAIR OF PASSAGE THERETHROUGH ONE OF WHICH OPENS ON ONE SIDE OF SAID SPINDLE AND THE OTHER OF WHICH OPENS ON THE OTHER OF SAID SPINDLE AND OVER BOTH OF WHICH SAID ROTOR ROTATES, AND CUP-LIKE ELEMENTS EACH RECEIVED OVER A RESPECTIVE SPOKE AND HAVING AN OUTER SURFACE WHICH RIDES AGAINST THE INSIDE OF SAID RACE WHEREBY ROTATION OF SAID ROTOR OCCURS SIMULTANEOUSLY WITH THE PASSAGE OF FLUID
Claim 2
Dependent Claim
148 words
A HYDRAULIC PUMP AND MOTOR COMPRISING A HOUSING, A CYLINDRICAL RACE MOUNTED WITHIN SAID HOUSING, A SPINDLE FIXED TO SAID HOUSING, A ROTOR ROTATABLY RECEIVED ON SAID SPINDLE FOR ROTATION WITHIN SAID RACE ABOUT AN AXIS LOCATED ECCENTRICALLY RELATIVE TO THE AXIS OF SAID CYLINDRICAL RACE, SAID ROTOR HAVING A PLURALITY OF RADIAL SPOKES WITH A RADIAL PASSAGE THROUGH EACH OF SAID SPOKES EACH OF SAID SPOKES HAVING A ROUNDED BALL SHAPE AT ITS DISTAL END, SAID SPINDLE HAVING A PAIR OF PASSAGE THERETHROUGH ONE OF WHICH OPENS ON ONE SIDE OF SAID SPINDLE AND THE OTHER OF WHICH OPENS ON THE OTHER OF SAID SPINDLE AND OVER BOTH OF WHICH SAID ROTOR ROTATES, AND CUP-LIKE ELEMENTS EACH RECEIVED OVER A RESPECTIVE SPOKE AND HAVING AN OUTER SURFACE WHICH RIDES AGAINST THE INSIDE OF SAID RACE WHEREBY ROTATION OF SAID ROTOR OCCURS SIMULTANEOUSLY WITH THE PASSAGE OF FLUID
References Cited (Backward Citations)
US879512A
Cited
US2293692A
Cited
US2651999A
Cited
US2747516A
Cited
US2729165A
Cited
US2929334A
Cited
US3084633A
Cited
US3034451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |