Patent US3129731A successfully refreshed from Google Patents.
US3129731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw protector
Assignee: MC CULLOCH CORP
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Filing: 1960-10-17
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Granted: 1964-04-21
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Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 Vincent C Tyrrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:19
CPC Classifications
B; B23; B23Q; B23Q13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A CHAIN SAW GUARD COMPRISING: (A) AN ELONGATED, RESILIENT BODY HAVING A SUBSTANTIALLY SEMICIRCULAR END PORTION AND TWO SPACED ELONGATED PORTIONS EXTENDING FROM SAID SEMICIRCULAR END PORTION; (B) EACH OF SAID ELONGATED PORTIONS HAVING AN OUTER PERIPHERAL PORTION FROM WHICH EXTENDS A PAIR OF OPPOSITE, FACING DEPENDING SIDE WALL PORTIONS; (C) EACH OF SAID SIDE WALL PORTIONS BEING SPACED FROM EACH OTHER SO THAT A SAW CHAIN ON A CHAIN SAW WILL FIT SNUGLY THEREBETWEEN, (D) SAID SIDE WALL PORTIONS HAVING PARTS THEREOF CONVERGING AND RESILIENTLY BIASED TOWARD EACH OTHER TO FRICTIONALLY ENGAGE A SAW CHAIN AND BAR UPON WHICH THE CHAIN TRAVELS; AND (E) FLANGE PORTIONS EXTENDING ANGULARLY LATERALLY OUTWARDLY FROM SAID CONVERGING PARTS TO FORM AN APPROXIMATE V IN CROSS SECTION, (F) SAID FLANGE PORTIONS HAVING INWARDLY FACING SIDES, (G) THE INWARDLY FACING SIDES OF SAID FLANGE PORTIONS BEING SPACED FROM EACH OTHER AT THE WIDEST PART OF THE V A DISTANCE APPROXIMATELY EQUAL TO THAT OF THE SPACE BETWEEN SAID SIDE WALL PORTIONS AND AT LEAST EQUAL TO THE WIDTH OF THE SAW CHAIN.
Claim 2
Dependent Claim
177 words
A CHAIN SAW GUARD COMPRISING: (A) AN ELONGATED, RESILIENT BODY HAVING A SUBSTANTIALLY SEMICIRCULAR END PORTION AND TWO SPACED ELONGATED PORTIONS EXTENDING FROM SAID SEMICIRCULAR END PORTION; (B) EACH OF SAID ELONGATED PORTIONS HAVING AN OUTER PERIPHERAL PORTION FROM WHICH EXTENDS A PAIR OF OPPOSITE, FACING DEPENDING SIDE WALL PORTIONS; (C) EACH OF SAID SIDE WALL PORTIONS BEING SPACED FROM EACH OTHER SO THAT A SAW CHAIN ON A CHAIN SAW WILL FIT SNUGLY THEREBETWEEN, (D) SAID SIDE WALL PORTIONS HAVING PARTS THEREOF CONVERGING AND RESILIENTLY BIASED TOWARD EACH OTHER TO FRICTIONALLY ENGAGE A SAW CHAIN AND BAR UPON WHICH THE CHAIN TRAVELS; AND (E) FLANGE PORTIONS EXTENDING ANGULARLY LATERALLY OUTWARDLY FROM SAID CONVERGING PARTS TO FORM AN APPROXIMATE V IN CROSS SECTION, (F) SAID FLANGE PORTIONS HAVING INWARDLY FACING SIDES, (G) THE INWARDLY FACING SIDES OF SAID FLANGE PORTIONS BEING SPACED FROM EACH OTHER AT THE WIDEST PART OF THE V A DISTANCE APPROXIMATELY EQUAL TO THAT OF THE SPACE BETWEEN SAID SIDE WALL PORTIONS AND AT LEAST EQUAL TO THE WIDTH OF THE SAW CHAIN.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |