US3382898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw attachment
Assignee: Individual
•
Filing: 1966-05-16
•
Granted: 1968-05-14
•
Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 Charles M Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:39
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/14; B27B17/144
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN A CHAIN SAW INCLUDING AN ENDLESS TOOTHED CHAIN, A FRAME, A DRIVE SPROCKET ROTATABLY MOUNTED ON SAID FRAME AND SUPPORTING SAID CHAIN, A PAIR OF SPACED THREADED STUDS FIXED TO SAID FRAME, A BLADE HAVING AN ELONGATED SLOT AND RECEIVED ON SAID STUDS WITH THE STUDS PROJECTING THROUGH SAID SLOT AND A GUARD COVER RECEIVED ON SAID STUDS, THE IMPROVEMENT WHICH COMPRISES AN ADJUSTABLE SPACER HAVING A THICKNESS GREATER THAN THE THICKNESS OF SAID BLADE AND RECEIVED BETWEEN SAID FRAME AND COVER AND SPACING SAID COVER FROM SAID FRAME A SUFFICIENT DISTANCE TO PERMIT RECIPROCATION OF SAID BLADE ON SAID STUDS, SAID SPACER INCLUDING: (A) A FIRST, SUBSTANTIALLY RECTANGULAR ELEMENT HAVING A LONGITUDINALLY EXTENDING GROOVE ALONG ONE SIDE THEREOF, SAID FIRST ELEMENT HAVING A FIRST CONCAVE END ADAPTED TO ABUT AGAINST ONE OF SAID STUDS; (B) A SECOND ELEMENT ADAPTED TO BE SLIDABLY MOUNTED WITHIN SAID GROOVE OF SAID FIRST ELEMENT; AND (C) MEANS FOR SECURING SAID FIRST AND SECOND ELEMENTS IN A FIXED RELATIONSHIP, SAID MEANS BEING RELEASABLE TO ALLOW ADJUSTMENT OF THE LENGTH OF SAID SPACER.
Claim 2
Dependent Claim
179 words
IN A CHAIN SAW INCLUDING AN ENDLESS TOOTHED CHAIN, A FRAME, A DRIVE SPROCKET ROTATABLY MOUNTED ON SAID FRAME AND SUPPORTING SAID CHAIN, A PAIR OF SPACED THREADED STUDS FIXED TO SAID FRAME, A BLADE HAVING AN ELONGATED SLOT AND RECEIVED ON SAID STUDS WITH THE STUDS PROJECTING THROUGH SAID SLOT AND A GUARD COVER RECEIVED ON SAID STUDS, THE IMPROVEMENT WHICH COMPRISES AN ADJUSTABLE SPACER HAVING A THICKNESS GREATER THAN THE THICKNESS OF SAID BLADE AND RECEIVED BETWEEN SAID FRAME AND COVER AND SPACING SAID COVER FROM SAID FRAME A SUFFICIENT DISTANCE TO PERMIT RECIPROCATION OF SAID BLADE ON SAID STUDS, SAID SPACER INCLUDING: (A) A FIRST, SUBSTANTIALLY RECTANGULAR ELEMENT HAVING A LONGITUDINALLY EXTENDING GROOVE ALONG ONE SIDE THEREOF, SAID FIRST ELEMENT HAVING A FIRST CONCAVE END ADAPTED TO ABUT AGAINST ONE OF SAID STUDS; (B) A SECOND ELEMENT ADAPTED TO BE SLIDABLY MOUNTED WITHIN SAID GROOVE OF SAID FIRST ELEMENT; AND (C) MEANS FOR SECURING SAID FIRST AND SECOND ELEMENTS IN A FIXED RELATIONSHIP, SAID MEANS BEING RELEASABLE TO ALLOW ADJUSTMENT OF THE LENGTH OF SAID SPACER.
References Cited (Backward Citations)
US909068A
Cited
US3194284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |