Patent US3224535A successfully refreshed from Google Patents.
US3224535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot clutch
Assignee: PIPE MACHINERY CO
•
Filing: 1962-01-02
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Granted: 1965-12-21
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Earle C Herbkersman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:24
CPC Classifications
F; F16; F16D; F16D11/00; F16D11/08; F16D11/10; B; B23; B23G; B23G7/00; F16D2011/008; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6774; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2549
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
277 words
A PILOT CLUTCH COMPRISING A PAIR OF CLUTCH MEMBERS, MEANS SUPPORTING THE CLUTCH MEMBERS IN COAXIAL RELATION FOR ROTATION RELATIVE TO EACH OTHER ABOUT THEIR COMMON AXIS AND FOR MOVEMENT AXIALLY ENDWISE TOWARD AND AWAY FROM EACH OTHER, EACH CLUTCH MEMBER HAVING AT THE END FACING THE OTHER MEMBER A PLURALITY OF CLUTCH TEETH ARRANGED IN A ROW EXTENDING CIRCUMFERENTIALLY OF SAID AXIS, THE TEETH OF EACH CLUTCH MEMBER BEING CONCURRENTLY ENGAGEABLE WITH THE TEETH OF THE OTHER CLUTCH MEMBER IN DRIVING RELATION UPON MOVEMENT OF THE MEMBERS AXIALLY RELATIVELY TOWARD EACH OTHER TO A PREDETERMINED POSITION, YIELDABLE MEANS FOR YIELDABLY URGING THE MEMBERS TOWARD EACH OTHER, ONE CLUTCH MEMBER HAVING A HOLDOUT FACE FACING ENDWISE OF SAID ONE CLUTCH MEMBER TOWARD THE OTHER CLUTCH MEMBER, AND EXTENDING CIRCUMFERENTIALLY OF, AND ELONGATED CIRCUMFERENTIALLY OF, SAID ONE CLUTCH MEMBER, AND ALSO HAVING A RECESS WHICH HAS A FRONT END WALL AND WHICH IS OPEN ENDWISE OF THE CLUTCH MEMBERS TOWARD SAID OTHER CLUTCH MEMBER, AND WHICH INTERRUPTS SAID HOLDOUT FACE FOR A PORTION OF THE CIRCUMFERENTIAL EXTENT OF SAID HOLDOUT FACE, A HOLDOUT MEMBER ON SAID OTHER CLUTCH MEMBER AND PROJECTING ENDWISE THEREOF TOWARD SAID ONE CLUTCH MEMBER AND HAVING A FRONT END WHICH LEADS IN THE DIRECTION OF DRIVE, AND HAVING AN OUTER FACE POSITIONED TO ENGAGE AND SLIDE CIRCUMFERENTIALLY OF THE CLUTCH MEMBERS ALONG SAID HOLDOUT FACE, SAID OUTER FACE EXTENDING CIRCUMFERENTIALLY OF SAID OTHER CLUTCH MEMBER AND BEING ELONGATED ENDWISE, SAID HOLDOUT MEMBER BEING OF LESS LENGTH CIRCUMFERENTIALLY OF THE CLUTCH MEMBERS THAN THE RECESS SO THAT THE HOLDOUT MEMBER CAN ENTER SAID RECESS UNDER THE FORCE EXERTED BY THE YIELDABLE MEANS WHEN THE HOLD-
Claim 2
Dependent Claim
277 words
A PILOT CLUTCH COMPRISING A PAIR OF CLUTCH MEMBERS, MEANS SUPPORTING THE CLUTCH MEMBERS IN COAXIAL RELATION FOR ROTATION RELATIVE TO EACH OTHER ABOUT THEIR COMMON AXIS AND FOR MOVEMENT AXIALLY ENDWISE TOWARD AND AWAY FROM EACH OTHER, EACH CLUTCH MEMBER HAVING AT THE END FACING THE OTHER MEMBER A PLURALITY OF CLUTCH TEETH ARRANGED IN A ROW EXTENDING CIRCUMFERENTIALLY OF SAID AXIS, THE TEETH OF EACH CLUTCH MEMBER BEING CONCURRENTLY ENGAGEABLE WITH THE TEETH OF THE OTHER CLUTCH MEMBER IN DRIVING RELATION UPON MOVEMENT OF THE MEMBERS AXIALLY RELATIVELY TOWARD EACH OTHER TO A PREDETERMINED POSITION, YIELDABLE MEANS FOR YIELDABLY URGING THE MEMBERS TOWARD EACH OTHER, ONE CLUTCH MEMBER HAVING A HOLDOUT FACE FACING ENDWISE OF SAID ONE CLUTCH MEMBER TOWARD THE OTHER CLUTCH MEMBER, AND EXTENDING CIRCUMFERENTIALLY OF, AND ELONGATED CIRCUMFERENTIALLY OF, SAID ONE CLUTCH MEMBER, AND ALSO HAVING A RECESS WHICH HAS A FRONT END WALL AND WHICH IS OPEN ENDWISE OF THE CLUTCH MEMBERS TOWARD SAID OTHER CLUTCH MEMBER, AND WHICH INTERRUPTS SAID HOLDOUT FACE FOR A PORTION OF THE CIRCUMFERENTIAL EXTENT OF SAID HOLDOUT FACE, A HOLDOUT MEMBER ON SAID OTHER CLUTCH MEMBER AND PROJECTING ENDWISE THEREOF TOWARD SAID ONE CLUTCH MEMBER AND HAVING A FRONT END WHICH LEADS IN THE DIRECTION OF DRIVE, AND HAVING AN OUTER FACE POSITIONED TO ENGAGE AND SLIDE CIRCUMFERENTIALLY OF THE CLUTCH MEMBERS ALONG SAID HOLDOUT FACE, SAID OUTER FACE EXTENDING CIRCUMFERENTIALLY OF SAID OTHER CLUTCH MEMBER AND BEING ELONGATED ENDWISE, SAID HOLDOUT MEMBER BEING OF LESS LENGTH CIRCUMFERENTIALLY OF THE CLUTCH MEMBERS THAN THE RECESS SO THAT THE HOLDOUT MEMBER CAN ENTER SAID RECESS UNDER THE FORCE EXERTED BY THE YIELDABLE MEANS WHEN THE HOLD-
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |