US3075623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprag-clutch and retainer structure
Assignee: Formsprag Co
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Filing: 1960-07-11
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Granted: 1963-01-29
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Lund Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:13
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/069; F16D41/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A SPRAG CLUTCH ASSEMBLY TO OPERATE BETWEEN CLUTCH RACES, COMPRISING A CIRCUMFERENTIAL SERIES OF AXIALLY EXTENDING SPRAGS HAVING RADIALLY INNER AND OUTER RACE ENGAGING SURFACES, AND RETAINER MEANS DIRECTLY ENGAGABLE WITH AND CONTROLLING MOVEMENT OF SAID SPRAGS, SAID RETAINER MEANS COMPRISING A PAIR OF STRUCTURALLY INDEPENDENT ANNULAR MEMBERS DISPOSED AXIALLY OUTWARDLY RELATIVE TO THE AXIAL MIDPOINTS OF THE SPARGS, EACH OF SAID MEMBERS HAVE A RADIALLY EXTENDING BODY PORTION AND A PLURALITY OF CIRCUMFERENTIALLY SUCCESSIVE SPACER PORTIONS EXTENDING AXIALLY INWARDLY FROM SAID BODY PORTION BETWEEN SPRAGS OF SAID SERIES, SAID SPACER PORTIONS OF THE RETAINER MEMBERS BEING OF AXIAL LENGTH NO MORE THAN HALF THAT OF THE SPRAGS.
Claim 2
Dependent Claim
108 words
A SPRAG CLUTCH ASSEMBLY TO OPERATE BETWEEN CLUTCH RACES, COMPRISING A CIRCUMFERENTIAL SERIES OF AXIALLY EXTENDING SPRAGS HAVING RADIALLY INNER AND OUTER RACE ENGAGING SURFACES, AND RETAINER MEANS DIRECTLY ENGAGABLE WITH AND CONTROLLING MOVEMENT OF SAID SPRAGS, SAID RETAINER MEANS COMPRISING A PAIR OF STRUCTURALLY INDEPENDENT ANNULAR MEMBERS DISPOSED AXIALLY OUTWARDLY RELATIVE TO THE AXIAL MIDPOINTS OF THE SPARGS, EACH OF SAID MEMBERS HAVE A RADIALLY EXTENDING BODY PORTION AND A PLURALITY OF CIRCUMFERENTIALLY SUCCESSIVE SPACER PORTIONS EXTENDING AXIALLY INWARDLY FROM SAID BODY PORTION BETWEEN SPRAGS OF SAID SERIES, SAID SPACER PORTIONS OF THE RETAINER MEMBERS BEING OF AXIAL LENGTH NO MORE THAN HALF THAT OF THE SPRAGS.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |