Patent US3340973A successfully refreshed from Google Patents.
US3340973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle clutch with disc spring operator
Assignee: LuK Lamellen und Kupplungsbau GmbH
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Filing: 1965-02-17
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Granted: 1967-09-12
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Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Maucher Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:51
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/583; F16D13/22; F16D13/38; F16D13/46; F16D13/48; F16D13/50; F16D13/585
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A CLUTCH STRUCTURE, ESPECIALLY FOR MOTOR VEHICLES, WHICH INCLUDES : A FLYWHEEL, SAID FLYWHEEL HAVING AN OUTER ANNULAR PORTION, AND A HUB AND RADIAL ARM MEANS INTERCONNECTING SAID HUB AND SAID ANNULAR PORTION, SAID ANNULAR PORTION HAVING ANNULAR SURFACE MEANS WITH THE PLANE THEREOF SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF ROTATION OF SAID FLYWHEEL, FRICTION DISC MEANS ADAPTED TO BE ROTATABLY CONNECTED TO A DRIVEN SHAFT AND OPERABLY SELECTIVELY TO FRICTIONALLY ENGAGE AND DISENGAGE SAID ANNULAR SURFACE MEANS TO THEREBY SELECTIVELY ESTABLISH AND INTERRUPT FRICTIONAL DRIVING CONNECTION BETWEEN SAID FLYWHEEL AND SAID FRICTION DISC MEANS, DRIVING SHAFT MEANS CONNECTED TO SAID HUB, PRESSING PLATE MEANS INTERPOSED BETWEEN A PORTION OF SAID RADIAL ARM MEANS AND SAID FRICTION DISC MEANS AND
Claim 2
Dependent Claim
120 words
A CLUTCH STRUCTURE, ESPECIALLY FOR MOTOR VEHICLES, WHICH INCLUDES : A FLYWHEEL, SAID FLYWHEEL HAVING AN OUTER ANNULAR PORTION, AND A HUB AND RADIAL ARM MEANS INTERCONNECTING SAID HUB AND SAID ANNULAR PORTION, SAID ANNULAR PORTION HAVING ANNULAR SURFACE MEANS WITH THE PLANE THEREOF SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF ROTATION OF SAID FLYWHEEL, FRICTION DISC MEANS ADAPTED TO BE ROTATABLY CONNECTED TO A DRIVEN SHAFT AND OPERABLY SELECTIVELY TO FRICTIONALLY ENGAGE AND DISENGAGE SAID ANNULAR SURFACE MEANS TO THEREBY SELECTIVELY ESTABLISH AND INTERRUPT FRICTIONAL DRIVING CONNECTION BETWEEN SAID FLYWHEEL AND SAID FRICTION DISC MEANS, DRIVING SHAFT MEANS CONNECTED TO SAID HUB, PRESSING PLATE MEANS INTERPOSED BETWEEN A PORTION OF SAID RADIAL ARM MEANS AND SAID FRICTION DISC MEANS AND
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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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |