Patent US3272293A successfully refreshed from Google Patents.
US3272293A
Expired / Lapsed
US
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Viscous fluid clutch with flow circulation means
Assignee: Eaton Corp
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Filing: 1964-03-02
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Granted: 1966-09-13
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Heater Richard William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:18
CPC Classifications
F; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/023; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A FLUID COUPLING OF THE SHEAR TYPE COMPRISING RELATIVELY ROTATABLE COUPLING MEMBERS, ONE OF SAID COUPLING MEMBERS DEFINING A FLUID WORKING CHAMBER AND THE OTHER OF SAID COUPLING MEMBERS BEING ROTATABLE IN SAID FLUID WORKING CHAMBER, SAID COUPLING MEMBERS HAVING OPPOSED SPACED SURFACES PROVIDING A FLUID SHEAR SPACE THEREBETWEEN AND CO-OPERABLE WITH A FLUID SHEAR MEDIUM IN SAID SHEAR SPACE TO TRANSMIT TORWUE BETWEEN THE COUPLING MEMBERS, A RESERVOIR CHAMBER COMMUNICATING WITH SAID WORKING CHAMBER, MEANS FOR EFFECTING FLUID FLOW INTO SAID SHEAR SPACE FROM THE RESERVOIR CHAMBER TO VARY THE TORQUE TRANSMITTED BETWEEN SAID INPUT AND OUTPUT COUPLING MEMBERS, AND NOTCH MEANS PROVIDED ON THE OUTER PERIPHERY OF THE OTHER COUPLING MEMBER AND OPERABLE TO RETARD THE RATE OF FLUID FLOW FROM THE RESERVOIR CHAMBER INTO SAID SHEAR SPACE.
Claim 2
Dependent Claim
130 words
A FLUID COUPLING OF THE SHEAR TYPE COMPRISING RELATIVELY ROTATABLE COUPLING MEMBERS, ONE OF SAID COUPLING MEMBERS DEFINING A FLUID WORKING CHAMBER AND THE OTHER OF SAID COUPLING MEMBERS BEING ROTATABLE IN SAID FLUID WORKING CHAMBER, SAID COUPLING MEMBERS HAVING OPPOSED SPACED SURFACES PROVIDING A FLUID SHEAR SPACE THEREBETWEEN AND CO-OPERABLE WITH A FLUID SHEAR MEDIUM IN SAID SHEAR SPACE TO TRANSMIT TORWUE BETWEEN THE COUPLING MEMBERS, A RESERVOIR CHAMBER COMMUNICATING WITH SAID WORKING CHAMBER, MEANS FOR EFFECTING FLUID FLOW INTO SAID SHEAR SPACE FROM THE RESERVOIR CHAMBER TO VARY THE TORQUE TRANSMITTED BETWEEN SAID INPUT AND OUTPUT COUPLING MEMBERS, AND NOTCH MEANS PROVIDED ON THE OUTER PERIPHERY OF THE OTHER COUPLING MEMBER AND OPERABLE TO RETARD THE RATE OF FLUID FLOW FROM THE RESERVOIR CHAMBER INTO SAID SHEAR SPACE.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |