US3331481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically releasable spring-engaged friction and jaw clutch
Assignee: Stearns Electric Corp
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Filing: 1965-08-23
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Granted: 1967-07-18
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Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Bernard E Wrensch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:20
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/02; F16D27/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A CLUTCH ENGAGED BY SPRING BIAS AND DISSENGAGED ELECTROMAGNETICALLY, THE COMBINATION WITH A MAGNET BODY HAVING MEANS FOR ATTACHING IT TO A SHAFT, OF A FIRST CLUTCH ELEMENT CONSTITUTING AN ARMATURE HAVING A SPLINED CONNECTION WITH SAID BODY, MEANS FOR ENERGIZING SAID BODY TO ATTRACT THE ARMATURE, SPRING MEANS FOR URGING THE ARMATURE FROM SAID BODY, A SECOND CLUTCH ELEMENT COMPRISING A DISK EXTENDING ACROSS THE ARMATURE, MEANS PROVIDING A SPLINED CONNECTION UPON WHICH THE SECOND CLUTCH ELEMENT IS MOVABLE AXIALLY TOWARD AND AWAY FROM THE MAGNET BODY, AND FIXED STOP MEANS COMPRISING A POST
Claim 2
Dependent Claim
96 words
IN A CLUTCH ENGAGED BY SPRING BIAS AND DISSENGAGED ELECTROMAGNETICALLY, THE COMBINATION WITH A MAGNET BODY HAVING MEANS FOR ATTACHING IT TO A SHAFT, OF A FIRST CLUTCH ELEMENT CONSTITUTING AN ARMATURE HAVING A SPLINED CONNECTION WITH SAID BODY, MEANS FOR ENERGIZING SAID BODY TO ATTRACT THE ARMATURE, SPRING MEANS FOR URGING THE ARMATURE FROM SAID BODY, A SECOND CLUTCH ELEMENT COMPRISING A DISK EXTENDING ACROSS THE ARMATURE, MEANS PROVIDING A SPLINED CONNECTION UPON WHICH THE SECOND CLUTCH ELEMENT IS MOVABLE AXIALLY TOWARD AND AWAY FROM THE MAGNET BODY, AND FIXED STOP MEANS COMPRISING A POST
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |