US3232173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air motor
Assignee: Cooper Bessemer Corp
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Filing: 1964-02-27
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Granted: 1966-02-01
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Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Paul R Van Sittert
- 👤 Robert L Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
F; F01; F01C; F01C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN AN AIR MOTOR INCLUDING A ROTOR CARRYING VANES AND WALL MEANS ECCENTRICALLY DISPOSED RELATIVE TO SAID ROTOR DEFINING A CHAMBER BETWEEN SAID ROTOR, SAID MALL MEANS AND SAID VANES, WHICH CHAMBER IS ADAPTED TO ROTATE ON AN INTAKE AND AN EXHAUST CYCLE, THAT IMPROVEMENT WHICH COMPRISES AN EXHAUST PORT LEADING FROM SAID CHAMBER ON SAID EXHAUST CYCLE, SAID EXHAUST PORT BEING SO DESIGNED THAT THE CROSS-SECTIONAL AREA OF SAID PORT IS SUBSTANTIALLY PROPORTIONAL TO THE RATE OF CHANGE OF VOLUME OF SAID CHAMBER FOR ALL POSITIONS IN SAID EXHAUST CYCLE.
Claim 2
Dependent Claim
91 words
IN AN AIR MOTOR INCLUDING A ROTOR CARRYING VANES AND WALL MEANS ECCENTRICALLY DISPOSED RELATIVE TO SAID ROTOR DEFINING A CHAMBER BETWEEN SAID ROTOR, SAID MALL MEANS AND SAID VANES, WHICH CHAMBER IS ADAPTED TO ROTATE ON AN INTAKE AND AN EXHAUST CYCLE, THAT IMPROVEMENT WHICH COMPRISES AN EXHAUST PORT LEADING FROM SAID CHAMBER ON SAID EXHAUST CYCLE, SAID EXHAUST PORT BEING SO DESIGNED THAT THE CROSS-SECTIONAL AREA OF SAID PORT IS SUBSTANTIALLY PROPORTIONAL TO THE RATE OF CHANGE OF VOLUME OF SAID CHAMBER FOR ALL POSITIONS IN SAID EXHAUST CYCLE.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |