US3216543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch
Assignee: Jean Walterscheid GmbH
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Filing: 1962-05-14
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Granted: 1965-11-09
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Schroter Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:34
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/21; F16D43/213; F16D43/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A FRICTION CLUTCH COMPRISING FIRST AND SECOND ROTATABLE CLUTCH MEMBERS FOR FRICTIONAL ENGAGEMENT WITH EACH OTHER, A CLUTCHING MEMBER ENGAGEABLE WITH ONE OF SAID CLUTCH MEMBERS TO URGE SAID CLUTCH MEMBERS INTO FRICTIONAL ENGAGEMENT, AN ACTUATING MEMBER ADJACENT SAID CLUTCHING MEMBER, SAID CLUTCHING AND ACTUATING MEMBERS HAVING PAIRS OF COOPERATING RECESSES, SLOPING WALLS, BALLS POSITIONED IN SAID PAIRS OF RECESSES TO DRIVINGLY CONNECT SAID CLUTCHING AND ACTUATING MEMBERS WHILE PERMITTING LIMITED RELATIVE ROTATION THEREBETWEEN, AN AXIALLY DISPLACEABLE DISC SPRING CLAMPED BETWEEN SAID ACTUATING MEMBER AND A PORTION OF ONE OF SAID CLUTCH MEMBERS AND ROTATABLE THEREWITH TO URGE SAID ACTUATING MEMBER TOWARDS SAID CLUTCH MEMBERS, SAID SPRING FORCEDEFLECTION CHARACTERISTICS AND THE SLOPES OF SAID RECESS WALLS BEING SUCH THAT THE PRODUCT OF THE COEFFICIENT OF FRICTION OF THE CLUTCH MEMBERS AND THE SPRING FORCE WILL REMAIN CONSTANT REGARDLESS OF VARIATIONS IN THE COEFFICIENT OF FRICTION OF SAID CLUTCH MEMBERS, AND MEANS FOR ADJUSTING THE TENSION ON SAID DISC SPRING, SAID MEANS COMPRISING ADJUSTABLE SPRING MEANS ACTING ON THE OUTER EDGE OF SAID DISC SPRING.
Claim 2
Dependent Claim
174 words
A FRICTION CLUTCH COMPRISING FIRST AND SECOND ROTATABLE CLUTCH MEMBERS FOR FRICTIONAL ENGAGEMENT WITH EACH OTHER, A CLUTCHING MEMBER ENGAGEABLE WITH ONE OF SAID CLUTCH MEMBERS TO URGE SAID CLUTCH MEMBERS INTO FRICTIONAL ENGAGEMENT, AN ACTUATING MEMBER ADJACENT SAID CLUTCHING MEMBER, SAID CLUTCHING AND ACTUATING MEMBERS HAVING PAIRS OF COOPERATING RECESSES, SLOPING WALLS, BALLS POSITIONED IN SAID PAIRS OF RECESSES TO DRIVINGLY CONNECT SAID CLUTCHING AND ACTUATING MEMBERS WHILE PERMITTING LIMITED RELATIVE ROTATION THEREBETWEEN, AN AXIALLY DISPLACEABLE DISC SPRING CLAMPED BETWEEN SAID ACTUATING MEMBER AND A PORTION OF ONE OF SAID CLUTCH MEMBERS AND ROTATABLE THEREWITH TO URGE SAID ACTUATING MEMBER TOWARDS SAID CLUTCH MEMBERS, SAID SPRING FORCEDEFLECTION CHARACTERISTICS AND THE SLOPES OF SAID RECESS WALLS BEING SUCH THAT THE PRODUCT OF THE COEFFICIENT OF FRICTION OF THE CLUTCH MEMBERS AND THE SPRING FORCE WILL REMAIN CONSTANT REGARDLESS OF VARIATIONS IN THE COEFFICIENT OF FRICTION OF SAID CLUTCH MEMBERS, AND MEANS FOR ADJUSTING THE TENSION ON SAID DISC SPRING, SAID MEANS COMPRISING ADJUSTABLE SPRING MEANS ACTING ON THE OUTER EDGE OF SAID DISC SPRING.
References Cited (Backward Citations)
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |