Patent US4057400A successfully refreshed from Google Patents.
Patent US3288257A successfully refreshed from Google Patents.
US3288257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch device with pressure multiplying and automatic wear compensating means
Assignee: Individual
•
Filing: 1964-02-24
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Granted: 1966-11-29
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Otmar M Ulbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:42
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A CLUTCH COMPRISING A PAIR OF CLUTCH ELEMENTS, ONE CLUTCH ELEMENT BEING SECURED TO A DRIVEN MEMBER AND THE OTHER CLUTCH MEMBER BEING SECURED TO THE DRIVING MEMBER, A PLURALITY OF TIE BARS, MEANS TO MOVE ONE END OF EACH OF SAID TIE BARS RELATIVE TO ITS OTHER END ALONG A CIRCULAR PATH ABOUT THE AXIS OF SAID CLUTCH TO TILT SAID TIE BARS TO FORCE SAID ONE CLUTCH ELEMENT INTO ENGAGEMENT WITH THE OTHER ELEMENT, AND MEANS FOR AUTOMATICALLY ADJUSTING THE EFFECTIVE LENGTHS OF THE TIE BARS ALONG THEIR AXES IN RESPONSE TO THE TILTING OF SAID TIE BARS THROUGH A PREDETERMINED ANGLE IN A CLUTCH ENGAGING OPERATION WHEREBY WEAR IS COMPENSATED.
Claim 2
Dependent Claim
113 words
A CLUTCH COMPRISING A PAIR OF CLUTCH ELEMENTS, ONE CLUTCH ELEMENT BEING SECURED TO A DRIVEN MEMBER AND THE OTHER CLUTCH MEMBER BEING SECURED TO THE DRIVING MEMBER, A PLURALITY OF TIE BARS, MEANS TO MOVE ONE END OF EACH OF SAID TIE BARS RELATIVE TO ITS OTHER END ALONG A CIRCULAR PATH ABOUT THE AXIS OF SAID CLUTCH TO TILT SAID TIE BARS TO FORCE SAID ONE CLUTCH ELEMENT INTO ENGAGEMENT WITH THE OTHER ELEMENT, AND MEANS FOR AUTOMATICALLY ADJUSTING THE EFFECTIVE LENGTHS OF THE TIE BARS ALONG THEIR AXES IN RESPONSE TO THE TILTING OF SAID TIE BARS THROUGH A PREDETERMINED ANGLE IN A CLUTCH ENGAGING OPERATION WHEREBY WEAR IS COMPENSATED.
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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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |