US3144890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw sprocket
Assignee: Outboard Marine Corp
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Filing: 1962-01-12
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Granted: 1964-08-18
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Finn T Irgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/08; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8759; Y10T83/8761
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE COMBINATION IN A CHAIN SAW OF AN ENGINE HAVING AN OUTPUT SHAFT, A CLUTCH MEMBER DRIVINGLY ENGAGEABLE WITH SAID SHAFT TO EFFECT ROTATION OF SAID CLUTCH MEMBER, MEANS FOR RELEASABLY DRIVINGLY ENGAGING SAID CLUTCH MEMBER TO SAID SHAFT, A CHAIN SPROCKET KEYED TO SAID CLUTCH MEMBER FOR ROTATION THEREWITH AND FOR SELF-ADJUSTING AXIAL MOVEMENT, AND MEANS ON SAID SPROCKET AND ON SAID CLUTCH MEMBER LIMITING SAID SELF-ADJUSTING AXIAL MOVEMENT OF SAID SPROCKET RELATIVE TO SAID CLUTCH MEMBER.
Claim 2
Dependent Claim
78 words
THE COMBINATION IN A CHAIN SAW OF AN ENGINE HAVING AN OUTPUT SHAFT, A CLUTCH MEMBER DRIVINGLY ENGAGEABLE WITH SAID SHAFT TO EFFECT ROTATION OF SAID CLUTCH MEMBER, MEANS FOR RELEASABLY DRIVINGLY ENGAGING SAID CLUTCH MEMBER TO SAID SHAFT, A CHAIN SPROCKET KEYED TO SAID CLUTCH MEMBER FOR ROTATION THEREWITH AND FOR SELF-ADJUSTING AXIAL MOVEMENT, AND MEANS ON SAID SPROCKET AND ON SAID CLUTCH MEMBER LIMITING SAID SELF-ADJUSTING AXIAL MOVEMENT OF SAID SPROCKET RELATIVE TO SAID CLUTCH MEMBER.
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 |