Patent US3262533A successfully refreshed from Google Patents.
US3262533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugally controlled coil clutch
Assignee: ZF Friedrichshafen AG
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Filing: 1964-04-22
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Granted: 1966-07-26
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Keller Josef
- 👤 Schwerdhofer Hans Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:18
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/08; F16D43/00; F16D43/02; F16D43/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
248 words
IN A CLUTCH, IN COMBINATION: (A) A ROTATABLE INPUT MEMBER; (B) A ROTATABLE OUTPUT MEMBER; (C) ENGAGEABLE COUPLING MEANS OPERATIVELY CONNECTED TO EACH OF SAID MEMBERS, SAID COUPLING MEANS BEING MOVABLE RELATIVE TO EACH OTHER TOWARD AND AWAY FROM AN ENGAGED POSITION IN WHICH SAID COUPLING MEANS TRANSMIT TORQUE TO SAID OUTPUT MEMBER WHEN SAID INPUT MEMBER ROTATES; (D) CENTRIFUGAL WEIGHT MEANS OPERATIVELY CONNECTED TO SAID INPUT MEMBER FOR ROTARY MOVEMENT ABOUT AN AXIS WHEN SAID INPUT MEMBER ROTATES, SAID CENTRIFUGAL WEIGHT MEANS BEING RADIALLY MOVABLE RELATIVE TO SAID AXIS; (E) YIELDABLY RESILIENT BIASING MEANS PERMANENTLY URGING SAID CENTRIFUGAL WEIGHT MEANS TO MOVE IN A RADIALLY INWARDLY DIRECTION FROM AN OPERATIVE POSITION REMOTE FROM SAID AXIS TOWARD AN INOPERATIVE POSITION ADJACENT SAID AXIS FOR HOLDING SAID CENTRIFUGAL WEIGHT MEANS IN SAID INOPERATIVE POSITION AT ALL ROTARY SPEEDS OF THE WEIGHT MEANS LOWER THAN A PREDETERMINED SPEED, AND FOR PERMITTING MOVEMENT OF THE WEIGHT MEANS FROM THE INOPERATIVE TO THE OPERATIVE POSITION IN RESPONSE TO CENTRIFUGAL FORCES AT SAID PREDETERMINED SPEED; (1) SAID COUPLING MEANS BEING CONNECTED TO SAID CENTRIFUGAL WEIGHT MEANS FOR MOVEMENT OF POSITION COUPLING EMANS INTO SAID ENGAGED POSITION THEREOF IN RESPONSE TO MOVEMENT OF SAID CENTRIFUGAL WEIGHT MEANS FROM SAID INOPERATIVE POSITION TOWARD SAID OPERATIVE POSITION: AND (F) LOCKING MEANS RESPONSIVE TO THE TRANSMISSION OF TORQUE BY SAID COUPLING MEANS FROM SAID INPUT MEMBER TO SAID OUTPUT MEMBER FOR LOCKING SAID CENTRIFUGAL WEIGHT MEANS IN SAID OPERATIVE POSITION THEREOF AT ALL SAID LOWER SPEEDS THEREOF.
Claim 2
Dependent Claim
248 words
IN A CLUTCH, IN COMBINATION: (A) A ROTATABLE INPUT MEMBER; (B) A ROTATABLE OUTPUT MEMBER; (C) ENGAGEABLE COUPLING MEANS OPERATIVELY CONNECTED TO EACH OF SAID MEMBERS, SAID COUPLING MEANS BEING MOVABLE RELATIVE TO EACH OTHER TOWARD AND AWAY FROM AN ENGAGED POSITION IN WHICH SAID COUPLING MEANS TRANSMIT TORQUE TO SAID OUTPUT MEMBER WHEN SAID INPUT MEMBER ROTATES; (D) CENTRIFUGAL WEIGHT MEANS OPERATIVELY CONNECTED TO SAID INPUT MEMBER FOR ROTARY MOVEMENT ABOUT AN AXIS WHEN SAID INPUT MEMBER ROTATES, SAID CENTRIFUGAL WEIGHT MEANS BEING RADIALLY MOVABLE RELATIVE TO SAID AXIS; (E) YIELDABLY RESILIENT BIASING MEANS PERMANENTLY URGING SAID CENTRIFUGAL WEIGHT MEANS TO MOVE IN A RADIALLY INWARDLY DIRECTION FROM AN OPERATIVE POSITION REMOTE FROM SAID AXIS TOWARD AN INOPERATIVE POSITION ADJACENT SAID AXIS FOR HOLDING SAID CENTRIFUGAL WEIGHT MEANS IN SAID INOPERATIVE POSITION AT ALL ROTARY SPEEDS OF THE WEIGHT MEANS LOWER THAN A PREDETERMINED SPEED, AND FOR PERMITTING MOVEMENT OF THE WEIGHT MEANS FROM THE INOPERATIVE TO THE OPERATIVE POSITION IN RESPONSE TO CENTRIFUGAL FORCES AT SAID PREDETERMINED SPEED; (1) SAID COUPLING MEANS BEING CONNECTED TO SAID CENTRIFUGAL WEIGHT MEANS FOR MOVEMENT OF POSITION COUPLING EMANS INTO SAID ENGAGED POSITION THEREOF IN RESPONSE TO MOVEMENT OF SAID CENTRIFUGAL WEIGHT MEANS FROM SAID INOPERATIVE POSITION TOWARD SAID OPERATIVE POSITION: AND (F) LOCKING MEANS RESPONSIVE TO THE TRANSMISSION OF TORQUE BY SAID COUPLING MEANS FROM SAID INPUT MEMBER TO SAID OUTPUT MEMBER FOR LOCKING SAID CENTRIFUGAL WEIGHT MEANS IN SAID OPERATIVE POSITION THEREOF AT ALL SAID LOWER SPEEDS THEREOF.
References Cited (Backward Citations)
US1801586A
Cited
US2851893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |