Patent US3279508A successfully refreshed from Google Patents.
US3279508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain saw bar
Assignee: Mcculloch Corp
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Filing: 1965-11-26
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Granted: 1966-10-18
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Expires: 1985-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jack W Ehlen
- 👤 John R Muir
- 👤 John L Zimmerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:48
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/02; B27B17/025; B27B17/12; B27B17/14; B27B17/146; Y; Y10; Y10T; Y10T83/00; Y10T83/263; Y10T83/707; Y10T83/7226; Y10T83/7239; Y10T83/7251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN A SAW CHAIN BAR CONSTRUCTION FOR SUPPORTING A SAW CHAIN, SAID BAR INCLUDING; (A) UPPER AND LOWER SIDE EDGES PROVIDING SURFACES TO SUPPORT AND GUIDE A SAW CHAIN IN A PATH ALONG THE PLANE OF SAID BAR; (B) AN END HAVING AT LEAST A PORTION GENERATED AROUND AN END AXIS, (C) SAID END HAVING SURFACES WHICH ARE CONTINUATIONS OF SAID SURFACES ON SAID UPPER AND LOWER EDGES; AND (D) SPROCKET WHEEL MEANS CARRIED ON SAID END IN POSITION FOR ENGAGEMENT WITH SAID CHAIN TRAVELING IN SAID PATH OVER THE END OF SAID BAR, (E) SAID SPROCKET MEANS BEING ROTATABLE ABOUT ITS AXIS, (F) SAID AXIS OF SAID SPROCKET MEANS OFFSET LONGITUDINALLY OUTWARDLY OF SAID END AXIS, (G) THE SPROCKET TEETH PROJECTING OUTWARDLY BEYOND SAID END IN AN ARC OF SAID SPROCKET OF APPROXIMATELY 170 DEGREES TO ENGAGE CHAIN LINK SURFACES TO CARRY SAID CHAIN OFF OF SAID END, (H) HALF OF SAID ARC EXTENDING TRANSVERSELY ON EACH SIDE OF THE LONGITUDINAL CENTER LINE OF THE BAR.
Claim 2
Dependent Claim
167 words
IN A SAW CHAIN BAR CONSTRUCTION FOR SUPPORTING A SAW CHAIN, SAID BAR INCLUDING; (A) UPPER AND LOWER SIDE EDGES PROVIDING SURFACES TO SUPPORT AND GUIDE A SAW CHAIN IN A PATH ALONG THE PLANE OF SAID BAR; (B) AN END HAVING AT LEAST A PORTION GENERATED AROUND AN END AXIS, (C) SAID END HAVING SURFACES WHICH ARE CONTINUATIONS OF SAID SURFACES ON SAID UPPER AND LOWER EDGES; AND (D) SPROCKET WHEEL MEANS CARRIED ON SAID END IN POSITION FOR ENGAGEMENT WITH SAID CHAIN TRAVELING IN SAID PATH OVER THE END OF SAID BAR, (E) SAID SPROCKET MEANS BEING ROTATABLE ABOUT ITS AXIS, (F) SAID AXIS OF SAID SPROCKET MEANS OFFSET LONGITUDINALLY OUTWARDLY OF SAID END AXIS, (G) THE SPROCKET TEETH PROJECTING OUTWARDLY BEYOND SAID END IN AN ARC OF SAID SPROCKET OF APPROXIMATELY 170 DEGREES TO ENGAGE CHAIN LINK SURFACES TO CARRY SAID CHAIN OFF OF SAID END, (H) HALF OF SAID ARC EXTENDING TRANSVERSELY ON EACH SIDE OF THE LONGITUDINAL CENTER LINE OF THE BAR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |