US3071115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic motor with overspeed safety device
Assignee: Thomas C Wilson Inc
•
Filing: 1961-07-06
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Granted: 1963-01-01
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 Donald E Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:04
CPC Classifications
F; F01; F01C; F01C20/00; F01C20/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A PNEUMATIC MOTOR, WHICH COMPRISES A HOUSING WITH AN INLET FOR AIR UNDER PRESSURE, A CYLINDER WITHIN THE HOUSING, A PASSAGE IN THE HOUSING LEADING FROM THE INLET TO THE CYLINDER AND FORMED IN PART OF A CIRCULAR VALVE SEAT, THE PASSAGE HAVING A CONSTRICTION BETWEEN THE SEAT AND THE CYLINDER, A HOLLOW ROTOR WITHIN THE CYLINDER, THE INTERIOR OF THE ROTOR BEING OPEN TO THE PASSAGE, A SPINDLE CARRYING THE ROTOR, A GOVERNOR WITHIN THE HOUSING FOR CONTROLLING THE FLOW OF AIR THROUGH THE VALVE SEAT, THE GOVERNOR INCLUDING A VALVE MEMBER CO-OPERATING WITH THE VALVE SEAT AND MEANS ACTUATED BY CENTRIFUGAL FORCE FOR OPERATING THE VALVE MEMBER, A SHUT-OFF VALVE MEMBER MOUNTED ON THE SPINDLE FOR MOVEMENT LENGTHWISE THEREOF INTO THE PASSAGE TO STOP THE FLOW OF AIR TO THE CYLINDER, THE SHUT-OFF VALVE MEMBER HAVING ONE END EXPOSED TO THE AIR PRESSURE WITHIN THE INTERIOR OF THE ROTOR AND THE OTHER TO THE LOWER AIR PRESSURE IN THE CONSTRICTION IN THE PAS-
Claim 2
Dependent Claim
165 words
A PNEUMATIC MOTOR, WHICH COMPRISES A HOUSING WITH AN INLET FOR AIR UNDER PRESSURE, A CYLINDER WITHIN THE HOUSING, A PASSAGE IN THE HOUSING LEADING FROM THE INLET TO THE CYLINDER AND FORMED IN PART OF A CIRCULAR VALVE SEAT, THE PASSAGE HAVING A CONSTRICTION BETWEEN THE SEAT AND THE CYLINDER, A HOLLOW ROTOR WITHIN THE CYLINDER, THE INTERIOR OF THE ROTOR BEING OPEN TO THE PASSAGE, A SPINDLE CARRYING THE ROTOR, A GOVERNOR WITHIN THE HOUSING FOR CONTROLLING THE FLOW OF AIR THROUGH THE VALVE SEAT, THE GOVERNOR INCLUDING A VALVE MEMBER CO-OPERATING WITH THE VALVE SEAT AND MEANS ACTUATED BY CENTRIFUGAL FORCE FOR OPERATING THE VALVE MEMBER, A SHUT-OFF VALVE MEMBER MOUNTED ON THE SPINDLE FOR MOVEMENT LENGTHWISE THEREOF INTO THE PASSAGE TO STOP THE FLOW OF AIR TO THE CYLINDER, THE SHUT-OFF VALVE MEMBER HAVING ONE END EXPOSED TO THE AIR PRESSURE WITHIN THE INTERIOR OF THE ROTOR AND THE OTHER TO THE LOWER AIR PRESSURE IN THE CONSTRICTION IN THE PAS-
References Cited (Backward Citations)
US1884584A
Cited
US2586968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |