US3144782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw driving sprocket assembly
Assignee: Individual
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Filing: 1961-10-27
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Granted: 1964-08-18
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Tillson H Edmunson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:12
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A DRIVING SPROCKET ASSEMBLY FOR PROVIDING A DRIVE CONNECTION BETWEEN A CHAIN SAW POWER UNIT AND A SAW CHAIN, COMPRISING A CUP-SHAPED CLUTCH ELEMENT ADAPTED TO BE DRIVEN BY THE POWER UNIT AND HAVING A CLOSED FACE PROVIDED WITH RECESSES, FIRST AND SECOND SPROCKET WHEEL RETAINING MEMBERS HAVING PROJECTIONS ON ONE SURFACE AND INDENTATIONS ON THE OTHER SURFACE, THE SPROCKET WHEEL RETAINING MEMBERS BEING DISPOSED IN THE ASSEMBLY WITH THE INDENTATIONS FACING EACH OTHER AND THE PROJECTIONS FACING OUTWARDLY WHEREBY THE PROJECTIONS ON ONE OF THE RETAINING MEMBERS ENGAGES THE RECESSES IN THE CLUTCH ELEMENT FOR PROVIDING A DRIVE CONNECTION, AND A SPROCKET WHEEL DISPOSED BETWEEN THE RETAINING MEMBERS ADAPTED FOR MESHING ENGAGEMENT WITH THE SAW CHAIN, THE SPROCKET WHEEL HAVING TOOTHED PORTIONS AND OPPOSITELY EXTENDING LATERAL ENLARGEMENTS ON THE TOOTHED PORTIONS ENGAGING THE RECESSES IN THE FIRST AND SECOND RETAINING MEMBERS FOR PROVIDING A DRIVE CONNECTION THEREBETWEEN.
Claim 2
Dependent Claim
148 words
A DRIVING SPROCKET ASSEMBLY FOR PROVIDING A DRIVE CONNECTION BETWEEN A CHAIN SAW POWER UNIT AND A SAW CHAIN, COMPRISING A CUP-SHAPED CLUTCH ELEMENT ADAPTED TO BE DRIVEN BY THE POWER UNIT AND HAVING A CLOSED FACE PROVIDED WITH RECESSES, FIRST AND SECOND SPROCKET WHEEL RETAINING MEMBERS HAVING PROJECTIONS ON ONE SURFACE AND INDENTATIONS ON THE OTHER SURFACE, THE SPROCKET WHEEL RETAINING MEMBERS BEING DISPOSED IN THE ASSEMBLY WITH THE INDENTATIONS FACING EACH OTHER AND THE PROJECTIONS FACING OUTWARDLY WHEREBY THE PROJECTIONS ON ONE OF THE RETAINING MEMBERS ENGAGES THE RECESSES IN THE CLUTCH ELEMENT FOR PROVIDING A DRIVE CONNECTION, AND A SPROCKET WHEEL DISPOSED BETWEEN THE RETAINING MEMBERS ADAPTED FOR MESHING ENGAGEMENT WITH THE SAW CHAIN, THE SPROCKET WHEEL HAVING TOOTHED PORTIONS AND OPPOSITELY EXTENDING LATERAL ENLARGEMENTS ON THE TOOTHED PORTIONS ENGAGING THE RECESSES IN THE FIRST AND SECOND RETAINING MEMBERS FOR PROVIDING A DRIVE CONNECTION THEREBETWEEN.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |