US3323624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch diaphragm spring with resilient cushion
Assignee: Valeo SE
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Filing: 1965-01-14
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Granted: 1967-06-06
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Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Maurice Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:04
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/583; F16D13/585
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A CLUTCH COMPRISING TWO PLATES ROTATABLE IN SYNCHRONISM, ONE OF THE PLATES BEING AXIALLY FIXED AND THE OTHER OF THE PLATES BEING AXIALLY MOVABLE, A FRICTION DISC ADAPTED TO BE GRIPPED BETWEEN THE TWO PLATES, A COVER RIGIDLY FIXED TO ONE OF SAID PLATES, AN ELASTIC DIAPHRAGM HAVING A CENTRAL PORTION PROVIDED WITH RADIAL SLOTS FORMING LEVERS, THE ELASTIC DIAPHRAGM HAVING A PERIPHERAL PORTION IN THE FORM OF A WASHER, THE LEVERS OF THE ELASTIC DIAPHRAGM BEING PIVOTED AT THEIR RADIALLY OUTER ENDS TO SAID COVER AND MOVABLE AXIALLY TO APPLY OR RELEASE THE ELASTIC ACTION OF THE WASHER TO GRIP OR RELEASE THE FRICTION DISC BETWEEN THE TWO PLATES AT WILL; CHARACTERIZED BY A PROGRESSIVE ELASTIC DEVICE DISPOSED AT THE LEVER PIVOTS AND ACTING IN COMPRESSION BETWEEN SAID COVER AND SAID PERIPHERAL WASHER OF SAID DIAPHRAGM, SAID PROGRESSIVE ELASTIC DEVICE HAVING AN ELASTIC FORCE SUBSTANTIALLY LESS THAN THAT OF SAID PERIPHERAL WASHER.
Claim 2
Dependent Claim
153 words
A CLUTCH COMPRISING TWO PLATES ROTATABLE IN SYNCHRONISM, ONE OF THE PLATES BEING AXIALLY FIXED AND THE OTHER OF THE PLATES BEING AXIALLY MOVABLE, A FRICTION DISC ADAPTED TO BE GRIPPED BETWEEN THE TWO PLATES, A COVER RIGIDLY FIXED TO ONE OF SAID PLATES, AN ELASTIC DIAPHRAGM HAVING A CENTRAL PORTION PROVIDED WITH RADIAL SLOTS FORMING LEVERS, THE ELASTIC DIAPHRAGM HAVING A PERIPHERAL PORTION IN THE FORM OF A WASHER, THE LEVERS OF THE ELASTIC DIAPHRAGM BEING PIVOTED AT THEIR RADIALLY OUTER ENDS TO SAID COVER AND MOVABLE AXIALLY TO APPLY OR RELEASE THE ELASTIC ACTION OF THE WASHER TO GRIP OR RELEASE THE FRICTION DISC BETWEEN THE TWO PLATES AT WILL; CHARACTERIZED BY A PROGRESSIVE ELASTIC DEVICE DISPOSED AT THE LEVER PIVOTS AND ACTING IN COMPRESSION BETWEEN SAID COVER AND SAID PERIPHERAL WASHER OF SAID DIAPHRAGM, SAID PROGRESSIVE ELASTIC DEVICE HAVING AN ELASTIC FORCE SUBSTANTIALLY LESS THAN THAT OF SAID PERIPHERAL WASHER.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |