US3326344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid operated flexible clutch
Assignee: Individual
•
Filing: 1965-05-19
•
Granted: 1967-06-20
•
Expires: 1985-05-19
Abstract
No abstract record available.
Inventors
- 👤 Hackforth Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/042; F16D25/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A SHAFT CLUTCH ASSEMBLY COMPRISING A PAIR OF CLUTCH MEMBERS, ONE OF SAID CLUTCH MEMBERS INCLUDING A HUB HAVING A LONGITUDINAL AXIS AND A HOLLOW RESILIENT ANNULAR MEMBER HAVING AN INNER PERIPHERAL EDGE COAXIALLY FIXED TO SAID HUB, SAID HOLLOW ANNULAR MEMBER COMPRISING A PAIR OF RESILIENT ANNULAR DISC LOCATED IN SPACED FACE TO FACE RELATION TO EACH OTHER SO AS TO DEFINE AN ANNULAR GAP THEREBETWEEN, SAID RESILIENT ANNULAR DISC BEING YIELDABLE IN THE DIRECTION OF THE HUB AXIS AND IN DIRECTIONS RADIAL THERETO, WALL MEANS EXTENDING BETWEEN OUTER PERIPHERAL EDGE PORTIONS OF SAID ANNULAR DISC AND CLOSING SAID ANNUAL GAP, SAID WALL MEANS BEING RESILIENTLY STRETCHABLE IN THE DIRECTION OF THE HUB AXIS, AND FRICTION LINING MEANS MOUNTED ON SAID ANNULAR DISC, SAID HOLLOW ANNULAR MEMBER BEING ADAPTED TO RECEIVE PRESSURIZED FLUID IN SAID AN-
Claim 2
Dependent Claim
137 words
A SHAFT CLUTCH ASSEMBLY COMPRISING A PAIR OF CLUTCH MEMBERS, ONE OF SAID CLUTCH MEMBERS INCLUDING A HUB HAVING A LONGITUDINAL AXIS AND A HOLLOW RESILIENT ANNULAR MEMBER HAVING AN INNER PERIPHERAL EDGE COAXIALLY FIXED TO SAID HUB, SAID HOLLOW ANNULAR MEMBER COMPRISING A PAIR OF RESILIENT ANNULAR DISC LOCATED IN SPACED FACE TO FACE RELATION TO EACH OTHER SO AS TO DEFINE AN ANNULAR GAP THEREBETWEEN, SAID RESILIENT ANNULAR DISC BEING YIELDABLE IN THE DIRECTION OF THE HUB AXIS AND IN DIRECTIONS RADIAL THERETO, WALL MEANS EXTENDING BETWEEN OUTER PERIPHERAL EDGE PORTIONS OF SAID ANNULAR DISC AND CLOSING SAID ANNUAL GAP, SAID WALL MEANS BEING RESILIENTLY STRETCHABLE IN THE DIRECTION OF THE HUB AXIS, AND FRICTION LINING MEANS MOUNTED ON SAID ANNULAR DISC, SAID HOLLOW ANNULAR MEMBER BEING ADAPTED TO RECEIVE PRESSURIZED FLUID IN SAID AN-
References Cited (Backward Citations)
US1777810A
Cited
US1909744A
Cited
US2199785A
Cited
US2619212A
Cited
US2765061A
Cited
US2805744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |