Patent US3103308A successfully refreshed from Google Patents.
US3103308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drives for vehicle engine cooling fans
Assignee: Motors Liquidation Co
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Filing: 1958-07-11
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Granted: 1963-09-10
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Expires: 1978-07-11
Abstract
No abstract record available.
Inventors
- 👤 William S Wolfram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:41
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081; F01P7/082; F01P7/087; F16; F16D; F16D43/00; F16D43/02; F16D43/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A FAN DRIVE COMPRISING COAXIAL DRIVE MEANS, FAN AND THERMOSENSITIVE MOTOR, SAID DRIVE MEANS HAVING A FRUSTOCONICAL PERIPHERY AND A HOLLOW HUB ATTACHABLE TO THE END OF A SHAFT, SAID FAN BEING ROTATABLE AND LINEARLY MOVABLE ON SAID HUB AND BEARING A FRUSTO-CONICAL SURFACE, SAID FRUSTO-CONICAL SURFACE ON SAID FAN BEING DISPOSED OUTWARDLY FROM SAID FRUSTO-CONICAL PERIPHERY OF SAID DRIVE MEANS AND COOPERATING WITH SAID FRUSTO-CONICAL PERIPHERY OF SAID DRIVE MEANS TO RETAIN SAID FAN ON SAID HUB, THE SAID MOTOR BEING FIXED TO SAID FAN AND OPERATIVELY EXPOSED TO THE AMBIENT AIR, PIN MEANS INCLUDING A TICKLER SPRING AND EXTENDING FROM SAID MOTOR INTO CONTACT WITH SAID DRIVE MEANS, FRICTION MATERIAL INTERPOSED BETWEEN SAID PERIPHERY AND SAID SURFACE, AND THE ARRANGEMENT BEING SUCH THAT THE FORCE OF SAID TICKLER SPRING EFFECTS A POWER TRANSMISSION PRESSURE ON SAID FRICTION MATERIAL, WHEN SAID THERMOSENSITIVE MOTOR IS COLD.
Claim 2
Dependent Claim
146 words
A FAN DRIVE COMPRISING COAXIAL DRIVE MEANS, FAN AND THERMOSENSITIVE MOTOR, SAID DRIVE MEANS HAVING A FRUSTOCONICAL PERIPHERY AND A HOLLOW HUB ATTACHABLE TO THE END OF A SHAFT, SAID FAN BEING ROTATABLE AND LINEARLY MOVABLE ON SAID HUB AND BEARING A FRUSTO-CONICAL SURFACE, SAID FRUSTO-CONICAL SURFACE ON SAID FAN BEING DISPOSED OUTWARDLY FROM SAID FRUSTO-CONICAL PERIPHERY OF SAID DRIVE MEANS AND COOPERATING WITH SAID FRUSTO-CONICAL PERIPHERY OF SAID DRIVE MEANS TO RETAIN SAID FAN ON SAID HUB, THE SAID MOTOR BEING FIXED TO SAID FAN AND OPERATIVELY EXPOSED TO THE AMBIENT AIR, PIN MEANS INCLUDING A TICKLER SPRING AND EXTENDING FROM SAID MOTOR INTO CONTACT WITH SAID DRIVE MEANS, FRICTION MATERIAL INTERPOSED BETWEEN SAID PERIPHERY AND SAID SURFACE, AND THE ARRANGEMENT BEING SUCH THAT THE FORCE OF SAID TICKLER SPRING EFFECTS A POWER TRANSMISSION PRESSURE ON SAID FRICTION MATERIAL, WHEN SAID THERMOSENSITIVE MOTOR IS COLD.
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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) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |