US3081708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary motor or pump
Assignee: SARGENT ENGINEERING Corp
•
Filing: 1960-08-10
•
Granted: 1963-03-19
•
Expires: 1980-08-10
Abstract
No abstract record available.
Inventors
- 👤 Nyman Hugo
- 👤 Paul M Devendorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:00
CPC Classifications
F; F01; F01B; F01B1/00; F01B1/06; F01B1/0641; F01B1/0644; F01B1/0658; F01B13/00; F01B13/04; F01B13/06; F01B13/061; F01B13/063; F01B13/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A ROTARY MOTOR OR PUMP, THE COMBINATION OF: A HOUSING HAVING A ROTOR MOUNTED TO TURN THEREIN, THE ROTOR HAVING TWO ROWS OF RADIALLY EXTENDING CYLINDERS, A PLURALITY OF PISTONS, EACH PISTON BEING SLIDABLY MOUNTED FOR RADIAL MOVEMENT AND TURNING MOVEMENT WITHIN ONE OF SAID CYLINDERS, RESPECTIVELY, A SHELL ROTATABLY MOUNTED WITHIN THE HOUSING AND ECCENTRICALLY POSITIONED WITH RESPECT TO THE ROTOR, EACH OF THE PISTONS HAVING A HEAD FIXED THEREON CONTACTING SAID SHELL, THE PATH OF THE PISTON HEADS IN ONE ROW OVERLYING THE PATH OF THE PISTON HEADS IN THE OTHER ROW EACH PISTON HEAD HAVING AN ANNULAR RADIAL SHOULDER, AND A FREE FLOATING RING INTERPOSED BETWEEN SAID ROWS OF CYLINDERS AND HAVING A CYLINDRICAL SURFACE CONTACTING SAID ANNULAR SHOULDERS WHEREBY THE PISTON HEADS ARE MAINTAINED IN CONTACT WITH SAID SHELL.
Claim 2
Dependent Claim
134 words
IN A ROTARY MOTOR OR PUMP, THE COMBINATION OF: A HOUSING HAVING A ROTOR MOUNTED TO TURN THEREIN, THE ROTOR HAVING TWO ROWS OF RADIALLY EXTENDING CYLINDERS, A PLURALITY OF PISTONS, EACH PISTON BEING SLIDABLY MOUNTED FOR RADIAL MOVEMENT AND TURNING MOVEMENT WITHIN ONE OF SAID CYLINDERS, RESPECTIVELY, A SHELL ROTATABLY MOUNTED WITHIN THE HOUSING AND ECCENTRICALLY POSITIONED WITH RESPECT TO THE ROTOR, EACH OF THE PISTONS HAVING A HEAD FIXED THEREON CONTACTING SAID SHELL, THE PATH OF THE PISTON HEADS IN ONE ROW OVERLYING THE PATH OF THE PISTON HEADS IN THE OTHER ROW EACH PISTON HEAD HAVING AN ANNULAR RADIAL SHOULDER, AND A FREE FLOATING RING INTERPOSED BETWEEN SAID ROWS OF CYLINDERS AND HAVING A CYLINDRICAL SURFACE CONTACTING SAID ANNULAR SHOULDERS WHEREBY THE PISTON HEADS ARE MAINTAINED IN CONTACT WITH SAID SHELL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |