Patent US3381497A successfully refreshed from Google Patents.
US3381497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal joint
Assignee: Borg Warner Corp
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Filing: 1966-10-10
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Granted: 1968-05-07
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Expires: 1986-10-10
Abstract
No abstract record available.
Inventors
- 👤 Clifford H Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:31
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/24; F16D3/20; F16D3/202; F16D3/205; F16D3/2055
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A UNIVERSAL COUPLING FOR A PAIR OF SHAFTS COMPRISING A DRIVING MEMBER ADAPTED TO BE CONNECTED TO AN END OF ONE OF SAID SHAFTS AND A DRIVEN MEMBER ADAPTED TO BE CONNECTED TO AN END OF THE OTHER OF SAID SHAFTS, ONE OF SAID MEMBERS INCLUDING A HOLLOW SHELL HAVING THREE LONGITUDINALLY EXTENDING AXIAL GROOVES CIRCUMFERENTIALLY EQUALLY SPACED ABOUT ITS LONGITUDINAL CENTERLINE, EACH SAID GROOVE INCLUDING AT LEAST ONE SUBSTANTIALLY FLAT SURFACE EXTENDING INWARDLY OF SAID SHELL, THE OTHER OF SAID MEMBERS INCLUDING A SPIDER HAVING THREE TORQUE ARMS CIRCUMFERENTIALLY EQUALLY SPACED ABOUT ITS LONGITUDINAL CENTERLINE, EACH SAID TORQUE ARM EXTENDING RADIALLY OUTWARDLY INTO A SEPARATE ONE OF SAID AXIAL GROOVES OF SAID OTHER MEMBER AND HAVING AT LEAST ONE BEARING PAD CONNECTED THERETO INCLUDING A SDUBSTANTIALLY FLAT SURFACE ADAPTED TO SLIDE ON SAID SUBSTANTIALLY FLAT SURFACE OF SAID AXIAL GROOVE ASSOCIATED WITH SAID TORQUE ARM, SAID PADS BEING CONNECTED TO SAID TORQUE ARMS BY MEANS FORM-
Claim 2
Dependent Claim
157 words
A UNIVERSAL COUPLING FOR A PAIR OF SHAFTS COMPRISING A DRIVING MEMBER ADAPTED TO BE CONNECTED TO AN END OF ONE OF SAID SHAFTS AND A DRIVEN MEMBER ADAPTED TO BE CONNECTED TO AN END OF THE OTHER OF SAID SHAFTS, ONE OF SAID MEMBERS INCLUDING A HOLLOW SHELL HAVING THREE LONGITUDINALLY EXTENDING AXIAL GROOVES CIRCUMFERENTIALLY EQUALLY SPACED ABOUT ITS LONGITUDINAL CENTERLINE, EACH SAID GROOVE INCLUDING AT LEAST ONE SUBSTANTIALLY FLAT SURFACE EXTENDING INWARDLY OF SAID SHELL, THE OTHER OF SAID MEMBERS INCLUDING A SPIDER HAVING THREE TORQUE ARMS CIRCUMFERENTIALLY EQUALLY SPACED ABOUT ITS LONGITUDINAL CENTERLINE, EACH SAID TORQUE ARM EXTENDING RADIALLY OUTWARDLY INTO A SEPARATE ONE OF SAID AXIAL GROOVES OF SAID OTHER MEMBER AND HAVING AT LEAST ONE BEARING PAD CONNECTED THERETO INCLUDING A SDUBSTANTIALLY FLAT SURFACE ADAPTED TO SLIDE ON SAID SUBSTANTIALLY FLAT SURFACE OF SAID AXIAL GROOVE ASSOCIATED WITH SAID TORQUE ARM, SAID PADS BEING CONNECTED TO SAID TORQUE ARMS BY MEANS FORM-
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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |