US3253548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Motors Liquidation Co
•
Filing: 1963-05-27
•
Granted: 1966-05-31
•
Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Philip B Zeigler
- 👤 William B Thompson
- 👤 Robert P Rohde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PUMP INCLUDING A CASING HAVING INLET AND OUTLET PORTS, A CAM RING WITHIN SAID CASING, A ROTOR WITHIN SAID CAM RING CARRING CIRCUMFERENTIALLY SPACED VANCES, DRIVE MEANS EXTENDING INTO SAID CASING AND OPERABLY CONNECTED TO SAID ROTOR TO ROTATE THE SAME AR VARYING SPEED, SUCH ROTATION BEING ACCOUMPAINED BY RADIAL RECIPROCATION OF SAID VANES INDUCED BY SAID CAM RING, A PRESSURE PLATE WITHIN SAID CASING AT ONE OF SAID ROTOR AND ABUTTING THE CORRESPONDING SIDE OF SAID CAM RING, A THRUST PLATE WITHIN SAID CASING AT THE OTHER SIDE OF SAID ROTOR AND ABUTTING THE CORRESPONDING SIDE OF SAID CAM RING, SAID PLATES COMPRISING RE-ENTRANT PORTIONS PROVIDING A PAIR OF PORTS IN CIRCUMFERENTIAL ALIGNMENT, SAID PRESSURE PLATE AND SAID CAM RING COMPRISING OPENINGS IN THE BODIES. THEREOF PROVIDING A PAIR OF PORTS IN CIRCUMFERENTIAL ALIGNMENT CIRCUMFERENTIALLY SPACED FROM SAID FIRST-MENTIONED
Claim 2
Dependent Claim
141 words
A PUMP INCLUDING A CASING HAVING INLET AND OUTLET PORTS, A CAM RING WITHIN SAID CASING, A ROTOR WITHIN SAID CAM RING CARRING CIRCUMFERENTIALLY SPACED VANCES, DRIVE MEANS EXTENDING INTO SAID CASING AND OPERABLY CONNECTED TO SAID ROTOR TO ROTATE THE SAME AR VARYING SPEED, SUCH ROTATION BEING ACCOUMPAINED BY RADIAL RECIPROCATION OF SAID VANES INDUCED BY SAID CAM RING, A PRESSURE PLATE WITHIN SAID CASING AT ONE OF SAID ROTOR AND ABUTTING THE CORRESPONDING SIDE OF SAID CAM RING, A THRUST PLATE WITHIN SAID CASING AT THE OTHER SIDE OF SAID ROTOR AND ABUTTING THE CORRESPONDING SIDE OF SAID CAM RING, SAID PLATES COMPRISING RE-ENTRANT PORTIONS PROVIDING A PAIR OF PORTS IN CIRCUMFERENTIAL ALIGNMENT, SAID PRESSURE PLATE AND SAID CAM RING COMPRISING OPENINGS IN THE BODIES. THEREOF PROVIDING A PAIR OF PORTS IN CIRCUMFERENTIAL ALIGNMENT CIRCUMFERENTIALLY SPACED FROM SAID FIRST-MENTIONED
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |