US3117660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch
Assignee: Individual
•
Filing: 1961-01-27
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Granted: 1964-01-14
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Expires: 1981-01-27
Abstract
No abstract record available.
Inventors
- 👤 John M Dodwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:13
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/20; F16D41/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A CLUTCH COMPRISING A FIRST MEMBER HAVING AN EXTERNALLY FACING PERIPHERAL V-GROOVE THEREIN, A SECOND CLUTCH MEMBER HAVING AN INTERNALLY FACING POCKET POSITIONED OVER AND FACING SAID GROOVE, A TORQUE-TRANSMITTING BAND PRECURVED TO OVERLAP ITSELF AND WRAPPINGLY ENGAGE THE SIDEWALLS OF SAID V-GROOVE, ONE END OF SAID BAND EXTENDING OUT OF SAID GROOVE AND BEING ENLARGED TO A WIDTH SUBSTANTIALLY GREATER THAN THE WIDTH OF SAID GROOVE AND MEANS CONNECTING SAID ONE END OF SAID BAND IN SAID POCKET, SAID MEANS COMPRISING AN OUTWARDLY PROJECTING PORTION SECURED TO SAID ONE END OF SAID BAND AGAINST LONGITUDINAL MOVEMENT RELATIVE THERETO IN THE POCKET, THE PROJECTING PORTION AND ITS POCKET HAVING CONTACTING TORQUETRANSMITTING SURFACES LYING IN SUBSTANTIALLY PARALLEL PLANES INCLINED AT AN ANGLE TO A PLANE DEFINED BY THE AXIS OF ROTATION OF SAID MEMBERS AND A RADIUS LINE DRAWN THROUGH SAID SURFACES, SAID OUTWARDLY PROJECTING PORTION COMPRISING A KEY SECURED TO SAID BAND BY A CYLINDRICAL PIN RIGID WITH SAID KEY AND PIVOTALLY SECURED TO SAID BAND ON AN AXIS GENERALLY RADIAL TO SAID AXIS OF ROTATION.
Claim 2
Dependent Claim
176 words
A CLUTCH COMPRISING A FIRST MEMBER HAVING AN EXTERNALLY FACING PERIPHERAL V-GROOVE THEREIN, A SECOND CLUTCH MEMBER HAVING AN INTERNALLY FACING POCKET POSITIONED OVER AND FACING SAID GROOVE, A TORQUE-TRANSMITTING BAND PRECURVED TO OVERLAP ITSELF AND WRAPPINGLY ENGAGE THE SIDEWALLS OF SAID V-GROOVE, ONE END OF SAID BAND EXTENDING OUT OF SAID GROOVE AND BEING ENLARGED TO A WIDTH SUBSTANTIALLY GREATER THAN THE WIDTH OF SAID GROOVE AND MEANS CONNECTING SAID ONE END OF SAID BAND IN SAID POCKET, SAID MEANS COMPRISING AN OUTWARDLY PROJECTING PORTION SECURED TO SAID ONE END OF SAID BAND AGAINST LONGITUDINAL MOVEMENT RELATIVE THERETO IN THE POCKET, THE PROJECTING PORTION AND ITS POCKET HAVING CONTACTING TORQUETRANSMITTING SURFACES LYING IN SUBSTANTIALLY PARALLEL PLANES INCLINED AT AN ANGLE TO A PLANE DEFINED BY THE AXIS OF ROTATION OF SAID MEMBERS AND A RADIUS LINE DRAWN THROUGH SAID SURFACES, SAID OUTWARDLY PROJECTING PORTION COMPRISING A KEY SECURED TO SAID BAND BY A CYLINDRICAL PIN RIGID WITH SAID KEY AND PIVOTALLY SECURED TO SAID BAND ON AN AXIS GENERALLY RADIAL TO SAID AXIS OF ROTATION.
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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |