Patent US3149706A successfully refreshed from Google Patents.
US3149706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction coupling
Assignee: Dana Inc
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Filing: 1963-06-25
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Granted: 1964-09-22
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Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 James A Mason
- 👤 Andrew H Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:29
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/10; F16D27/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A FRICTION COUPLING COMPRISING MEMBERS RELATIVELY ROTATABLE ABOUT A COMMON AXIS AND HAVING PERIPHERAL FRICTION SURFACES SPACED ALONG SUCH AXIS, A RADIALLY EXPANSIBLE AND CONTRACTIBLE ARCUATE BAND COMPLEMENTING THE CONTOUR OF AND EXTENDING LOOSELY AROUND SAID SURFACES FOR GRIPPING THEREOF WHEN MOVED RADIALLY AND FOR FREE ANGULAR FLOATING RELATIVE THERETO WHEN RELAXED, A HELICAL ACTUATOR COIL OF RESILIENT WIRE TELESCOPED WITH RESPECT TO THE SURFACE OF SAID BAND ON THE SIDE THEREOF OPPOSITE TO SAID FRICTION SURFACES AND INCLUDING A PLURALITY OF TURNS, SUBSTANTIALLY ALL OF WHICH ARE CHANGEABLE IN DIAMETER TO APPLY RADIAL PRESSURE ONLY TO THE BAND TO PRESS THE SAME AGAINST SAID FRICTION SURFACES, MEANS ANCHORING ONE END OF SAID ACTUATOR COIL TO A FIRST ONE OF SAID RELATIVELY ROTATABLE MEMBERS WHILE LEAVING THE OTHER END OF SAID COIL FREE, MEANS ON THE OTHER OF SAID RELATIVELY ROTATABLE MEMBERS COOPERATING WITH SAID FREE END OF SAID COIL TO FORM A PILOT FRICTION CLUTCH, AND MEANS CONTROLLING THE ENERGIZATION AND DEENERGIZATION OF SAID PILOT CLUTCH TO CONTROL THE WINDING AND UNWINDING OF SAID COIL AND THEREBY REGULATE THE APPLICATION OF RADIAL PRESSURE TO SAID BAND TO PRESS THE SAME AGAINST SAID FRICTION SURFACES, SAID BAND SURFACE AND THE ASSOCIATED SURFACES OF SUCCESSIVE ONES OF SAID PLURALITY OF ADJACENT
Claim 2
Dependent Claim
210 words
A FRICTION COUPLING COMPRISING MEMBERS RELATIVELY ROTATABLE ABOUT A COMMON AXIS AND HAVING PERIPHERAL FRICTION SURFACES SPACED ALONG SUCH AXIS, A RADIALLY EXPANSIBLE AND CONTRACTIBLE ARCUATE BAND COMPLEMENTING THE CONTOUR OF AND EXTENDING LOOSELY AROUND SAID SURFACES FOR GRIPPING THEREOF WHEN MOVED RADIALLY AND FOR FREE ANGULAR FLOATING RELATIVE THERETO WHEN RELAXED, A HELICAL ACTUATOR COIL OF RESILIENT WIRE TELESCOPED WITH RESPECT TO THE SURFACE OF SAID BAND ON THE SIDE THEREOF OPPOSITE TO SAID FRICTION SURFACES AND INCLUDING A PLURALITY OF TURNS, SUBSTANTIALLY ALL OF WHICH ARE CHANGEABLE IN DIAMETER TO APPLY RADIAL PRESSURE ONLY TO THE BAND TO PRESS THE SAME AGAINST SAID FRICTION SURFACES, MEANS ANCHORING ONE END OF SAID ACTUATOR COIL TO A FIRST ONE OF SAID RELATIVELY ROTATABLE MEMBERS WHILE LEAVING THE OTHER END OF SAID COIL FREE, MEANS ON THE OTHER OF SAID RELATIVELY ROTATABLE MEMBERS COOPERATING WITH SAID FREE END OF SAID COIL TO FORM A PILOT FRICTION CLUTCH, AND MEANS CONTROLLING THE ENERGIZATION AND DEENERGIZATION OF SAID PILOT CLUTCH TO CONTROL THE WINDING AND UNWINDING OF SAID COIL AND THEREBY REGULATE THE APPLICATION OF RADIAL PRESSURE TO SAID BAND TO PRESS THE SAME AGAINST SAID FRICTION SURFACES, SAID BAND SURFACE AND THE ASSOCIATED SURFACES OF SUCCESSIVE ONES OF SAID PLURALITY OF ADJACENT
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |