Patent US3298486A successfully refreshed from Google Patents.
US3298486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring clutch mechanism
Assignee: Curtiss Wright Corp
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Filing: 1965-01-28
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Granted: 1967-01-17
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 John S Perryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:54
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/08; F16D41/00; F16D41/20; F16D41/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A SPRING CLUTCH COMPRISING AN INPUT MEMBER HAVING A CYLINDRICAL SURFACE THEREON, AN OUTPUT MEMBER; HELICAL SPRING MEANS CONCENTRIC WIT THE CYLINDRICAL SURFACE ON THE INPUT MEMBER AND OUT OF CONTACT WITH THE SAID CYLINDRICAL SURFACE; STRUCTURE ON THE OUTPUT MEMBER AT ONE END OF THE SPRING MEANS TO PREVENT ROTATIONAL MOVEMENT OF THE SAID ONE END OF THE SPRING MEANS IN AT LEAST ONE DIRECTION RELATIVE TO THE OUTPUT MEMBER; MEANS FOR CONTROLLING OPERATION OF THE CLUTCH, ROTATABLE WITH THE INPUT MEMBER AND ENGAGEABLE WITH THE OTHER END OF THE SPRING MEANS TO CAUSE THE SPRING MEANS TO WIND AGAINST THE CYLINDRICAL SURFACE ON THE INPUT MEMBER UPON ROTATION OF THE INPUT MEMBER IN SAID ONE DIRECTION AND THEREBY DRIVABLY CONNECT THE INPUT AND OUTPUT MEMBERS THROUGH THE SPRING MEANS, ONE OF THE SAID MEANS INCLUDING A RESILIENT PORTION EFFECTIVE FOR BIASING A PART OF THE SAID ONE MEANS TO A POSITION WHEREIN THE CLUTCH CONTROLLING MEANS AND SPRING MEANS ENGAGE TO DRIVABLY CONNECT THE INPUT AND OUTPUT MEMBERS, AND EFFECTIVE TO RENDER THE SAID PART DEFLECTABLE BY CAMMING ACTION OF THE SPRING MEANS AND THE CONTROL MEANS TO A POSITION PERMITTING THE OUTPUT MEMBER TO ROTATE AT A GREATER SPEED THAN THE INPUT MEMBER.
Claim 2
Dependent Claim
206 words
A SPRING CLUTCH COMPRISING AN INPUT MEMBER HAVING A CYLINDRICAL SURFACE THEREON, AN OUTPUT MEMBER; HELICAL SPRING MEANS CONCENTRIC WIT THE CYLINDRICAL SURFACE ON THE INPUT MEMBER AND OUT OF CONTACT WITH THE SAID CYLINDRICAL SURFACE; STRUCTURE ON THE OUTPUT MEMBER AT ONE END OF THE SPRING MEANS TO PREVENT ROTATIONAL MOVEMENT OF THE SAID ONE END OF THE SPRING MEANS IN AT LEAST ONE DIRECTION RELATIVE TO THE OUTPUT MEMBER; MEANS FOR CONTROLLING OPERATION OF THE CLUTCH, ROTATABLE WITH THE INPUT MEMBER AND ENGAGEABLE WITH THE OTHER END OF THE SPRING MEANS TO CAUSE THE SPRING MEANS TO WIND AGAINST THE CYLINDRICAL SURFACE ON THE INPUT MEMBER UPON ROTATION OF THE INPUT MEMBER IN SAID ONE DIRECTION AND THEREBY DRIVABLY CONNECT THE INPUT AND OUTPUT MEMBERS THROUGH THE SPRING MEANS, ONE OF THE SAID MEANS INCLUDING A RESILIENT PORTION EFFECTIVE FOR BIASING A PART OF THE SAID ONE MEANS TO A POSITION WHEREIN THE CLUTCH CONTROLLING MEANS AND SPRING MEANS ENGAGE TO DRIVABLY CONNECT THE INPUT AND OUTPUT MEMBERS, AND EFFECTIVE TO RENDER THE SAID PART DEFLECTABLE BY CAMMING ACTION OF THE SPRING MEANS AND THE CONTROL MEANS TO A POSITION PERMITTING THE OUTPUT MEMBER TO ROTATE AT A GREATER SPEED THAN THE INPUT MEMBER.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |