Viscous fluid clutch
Abstract
Abstract A VISCOUS FLUID CLUTCH INCLUDING RELATIVE ROTATABLE FIRST AND SECOND DRIVE MEMBER HAVING A FLUID SHEAR SPACE THEREBETWEEN AND WHICH ARE COOPERABLE WITH A FLUID MEDIUM IN THE SHEAR SPACE TO PROVIDE A SHEAR-TYPE FLUID DRIVE THEREBETWEEN, AN ANNULAR RESERVOIR FOR AT TIMES STORING THE FLUID MEDIUM, A TEMPERATURE-RESPONSIVE VALVE FOR CONTROLLING THE FLOW OF THE FLUID MEDIUM FROM THE ANNULAR RESERVOIR TO THE FLUID SHEAR SPACE, UNEQUALLY SPACED AND UNEQUALLY RADIALLY POSITIONED INLET PORTS BETWEEN THE RESERVOIR AND THE FLUID SHEAR SPACE FOR ASSURING A GRADUAL INCREASE IN FAN SPEED WITH INCREASED TEMPERATURE TO BOTH SATISFY ENGINE REQUIREMENTS AND ABATE FAN NOISE, AND A COOPERATING ANNULAR CAVITY ASSOCIATED WITH THE FLUID SHEAR SPACE FOR COMPENSATING FOR MANUFACTURING AND ASSEMBLY VARATIONS IN FLUID AND/OR RESERVOIR VOLUMES.
Inventors
- 👤 Robert J Riner
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |