US3270844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload clutch or torque limiting device
Assignee: Fisher and Ludlow Ltd
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Filing: 1964-07-24
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Granted: 1966-09-06
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Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Orwin Olaf John Barclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/202; F16D43/204; F16D43/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
AN OVERLOAD CLUTCH COMPRISING A TORQUE TRANSMITTING DRIVING ELEMENT AND A TORQUE TRANSMITTING DRIVEN ELEMENT, A THRUST MEMBER, MEANS MOUNTING THE DRIVING ELEMENT, THE DRIVEN ELEMENT AND THE THRUST MEMBER IN SIDE BY SIDE BUT AXIALLY SPACED APART RELATION FOR RELATIVE ROTATIONAL MOVEMENT ABOUT A COMMON AXIS OF ROTATION, ONE OF SAID ELEMENTS HAVING TWO AXIALLY DIRECTED OPPOSITE FACES AND BEING DISPOSED BETWEEN THE OTHER ELEMENT AND THE THRUST MEMBER, SAID OTHER ELEMENT AND SAID THRUST MEMBER HAVING AXIALLY OPPOSED MUTUALLY PARALLEL PLANE FACES EACH DIRECTED TOWARDS AN ADJACENT ONE OF THE FACES OF THE ONE ELEMENT, SAID OTHER ELEMENT IN THE FACE THEREOF ADJACENT SAID ONE ELEMENT HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED TORQUE TRANSMITTING OPENINGS HAVING BALL ENGAGING MOUTHS OF CIRCULAR CONFIGURATION, SAID ONE ELEMENT HAVING A PLURALITY OF SLOTS EXTENDING THERETHROUGH BETWEEN ITS AXIALLY DIRECTED OPPOSITE FACES WITH ONE PORTION OF EACH SLOT IN REGISTER WITH ONE OF SAID TORQUE TRANSMITTING OPENINGS FOR ONE RELATIVE ROTATIONAL POSITION OF SAID ELEMENTS, A TORQUE TRANSMITTING BALL WITHIN EACH SLOT, EACH BALL HAVING A DIAMETER WHICH IS GREATER THAN THE DIAMETER OF THE TORQUE TRANSMITTING OPENINGS MOUTHS AND THE THICKNESS OF THE ONE ELEMENT ADJACENT SAID SLOTS SO THAT EACH BALL PROJECTS AXIALLY BEYOND EACH OF SAID TWO AXIALLY DIRECTED FACES OF THE ONE ELEMENT IN A POSITION FOR ENGAGING WITH SAID
Claim 2
Dependent Claim
222 words
AN OVERLOAD CLUTCH COMPRISING A TORQUE TRANSMITTING DRIVING ELEMENT AND A TORQUE TRANSMITTING DRIVEN ELEMENT, A THRUST MEMBER, MEANS MOUNTING THE DRIVING ELEMENT, THE DRIVEN ELEMENT AND THE THRUST MEMBER IN SIDE BY SIDE BUT AXIALLY SPACED APART RELATION FOR RELATIVE ROTATIONAL MOVEMENT ABOUT A COMMON AXIS OF ROTATION, ONE OF SAID ELEMENTS HAVING TWO AXIALLY DIRECTED OPPOSITE FACES AND BEING DISPOSED BETWEEN THE OTHER ELEMENT AND THE THRUST MEMBER, SAID OTHER ELEMENT AND SAID THRUST MEMBER HAVING AXIALLY OPPOSED MUTUALLY PARALLEL PLANE FACES EACH DIRECTED TOWARDS AN ADJACENT ONE OF THE FACES OF THE ONE ELEMENT, SAID OTHER ELEMENT IN THE FACE THEREOF ADJACENT SAID ONE ELEMENT HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED TORQUE TRANSMITTING OPENINGS HAVING BALL ENGAGING MOUTHS OF CIRCULAR CONFIGURATION, SAID ONE ELEMENT HAVING A PLURALITY OF SLOTS EXTENDING THERETHROUGH BETWEEN ITS AXIALLY DIRECTED OPPOSITE FACES WITH ONE PORTION OF EACH SLOT IN REGISTER WITH ONE OF SAID TORQUE TRANSMITTING OPENINGS FOR ONE RELATIVE ROTATIONAL POSITION OF SAID ELEMENTS, A TORQUE TRANSMITTING BALL WITHIN EACH SLOT, EACH BALL HAVING A DIAMETER WHICH IS GREATER THAN THE DIAMETER OF THE TORQUE TRANSMITTING OPENINGS MOUTHS AND THE THICKNESS OF THE ONE ELEMENT ADJACENT SAID SLOTS SO THAT EACH BALL PROJECTS AXIALLY BEYOND EACH OF SAID TWO AXIALLY DIRECTED FACES OF THE ONE ELEMENT IN A POSITION FOR ENGAGING WITH SAID
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |