Patent US3228500A successfully refreshed from Google Patents.
US3228500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable fluid shear clutch
Assignee: Individual
•
Filing: 1964-04-29
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Granted: 1966-01-11
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Kurt W Hollander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:47
CPC Classifications
F; F16; F16D; F16D35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A VARIABLE TORQUE TRANSFER APPARATUS FOR VARYING THE TORQUE BETWEEN A DRIVEN INPUT ELEMENT AND AN OUTPUT ELEMENT, COMPRISING: A CHAMBER FILLED WITH VISCOUS FLUID; COAXIAL INPUT AND OUTPUT ELEMENTS, EACH EXTENDING INTO SAID CHAMBER AND EACH HAVING A PLURALITY OF VANES MOUNTED THEREON FOR COACTION WITH THE VISCOUS FLUID; AND MEANS COMPRISING A PLURALITY OF AXIALLY MOVABLE MEMBERS; EACH OF SAID MEMBERS HAVING A GUIDING MEANS; FOLLOWING MEANS LOCATED ON EACH VANE OF SAID PLURALITY OF VANES; AND A CYLINDRICAL FRAME MEANS MOUNTED IN SAID CHAMBER RESTRAINING SAID VANES TO ESSENTIALLY RADIAL MOVEMENT UNDER THE INFLUENCE OF THE AXIAL MOVEMENT OF SAID
Claim 2
Dependent Claim
103 words
A VARIABLE TORQUE TRANSFER APPARATUS FOR VARYING THE TORQUE BETWEEN A DRIVEN INPUT ELEMENT AND AN OUTPUT ELEMENT, COMPRISING: A CHAMBER FILLED WITH VISCOUS FLUID; COAXIAL INPUT AND OUTPUT ELEMENTS, EACH EXTENDING INTO SAID CHAMBER AND EACH HAVING A PLURALITY OF VANES MOUNTED THEREON FOR COACTION WITH THE VISCOUS FLUID; AND MEANS COMPRISING A PLURALITY OF AXIALLY MOVABLE MEMBERS; EACH OF SAID MEMBERS HAVING A GUIDING MEANS; FOLLOWING MEANS LOCATED ON EACH VANE OF SAID PLURALITY OF VANES; AND A CYLINDRICAL FRAME MEANS MOUNTED IN SAID CHAMBER RESTRAINING SAID VANES TO ESSENTIALLY RADIAL MOVEMENT UNDER THE INFLUENCE OF THE AXIAL MOVEMENT OF SAID
References Cited (Backward Citations)
US1234776A
Cited
US1655743A
Cited
US1921048A
Cited
US1940918A
Cited
US2002629A
Cited
US2400186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |