US4248412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for sharpening chain saws at the work site
Assignee: Individual
•
Filing: 1980-01-07
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Granted: 1981-02-03
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Expires: 2000-01-07
Abstract
Abstract A support for sharpening chain saws is disclosed consisting of an L-shaped member having a threaded spike adapted to be screwed into the cut surface of a tree trunk. The horizontal arm of the member is provided with clamping means to hold fast the blade of the chain saw. A second, straight member adapted to support the handle or safety guard of the chain saw is height-adjustably secured to the vertical arm of the L-shaped member. The chain saw is held in upside down position for easy access to the chain teeth to be sharpened.
Inventors
- 👤 Leonce DeRoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:40
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/08; B23D63/16; B23D63/162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A support for sharpening a chain saw comprising an L-shaped rigid member having a horizontal arm and a vertical arm; said horizontal arm being provided with a threaded spike secured to its underside and a rigidly secured clamping means on its top surface adapted to detachably hold fast the blade of a chain saw; further comprising an outwardly, longitudinally projecting rigid support member secured to said vertical arm to support the handle or safety guard of a chain saw in upside down position.
Claim 2
Dependent Claim
83 words
A support for sharpening a chain saw comprising an L-shaped rigid member having a horizontal arm and a vertical arm; said horizontal arm being provided with a threaded spike secured to its underside and a rigidly secured clamping means on its top surface adapted to detachably hold fast the blade of a chain saw; further comprising an outwardly, longitudinally projecting rigid support member secured to said vertical arm to support the handle or safety guard of a chain saw in upside down position.
Claim 3
Dependent Claim
54 words
A support as defined in claim 1, wherein said support member is provided with a second clamping means at its inner end, said second clamping means releasably clampable on said vertical arm, whereby said support member may be adjustably vertically positioned on said vertical arm to accommodate various sizes and makes of chain saws.
Claim 4
Dependent Claim
35 words
A support as defined in claims 1 or 2, further including a screw threaded through the lower end of said vertical arm and adapted to abut or screw into the side of a tree trunk.
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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |