Patent US3621674A successfully refreshed from Google Patents.
US3621674A
Expired / Lapsed
US
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Reinforced bellows universal joint
Assignee: Ford Motor Co
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Filing: 1969-09-26
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Granted: 1971-11-23
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Expires: 1989-09-26
Abstract
Abstract A UNIVERSAL JOINT ASSEMBLY INCLUDING A FLEXIBLE, CYLINDRICAL TORQUE TRANSFER BELLOWS WHICH IS REINFORCED BY AN ELASTOMERIC STIFFENER MATERIAL RECEIVED WITHIN THE BELLOWS GROOVES. THE ELASTOMERIC MATERIAL INCREASES THE TORQUE CAPACITY OF THE BELLOWS BY REDUCING TORSIONAL WINDUP UNDER HIGH TORQUE LOADS.
Inventors
- 👤 George Ulics
- 👤 Donald G Wheatley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:34
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/72; F16D3/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |