Level device for a chainsaw

Details Level device for a chainsaw Level device for a chainsaw

1987-12-30

1989-01-03

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Structurally installed including relation to feature thereof

33390, 33370, 33379, G01C 928

Patent

active

047947012

ABSTRACT:
A level device for a chainsaw is formed from a hollow closed transparent plastic tube filled with a colored liquid. An air bubble is trapped in the liquid within the tube. Alignment indicia in the form of perpendicular intersecting lines are inscribed on the cylindrical side wall of the tube and on both end faces. An aluminum mounting bracket consists of a pair of spaced circular rings connected by a strut. A standard extends perpendicular to the strut, and is attached thereto at a point equidistant from each of the rings. A slotted mounting prong is formed at the free end of the standard for engagement with a threaded fastener on a chainsaw. In use, the device functions as a spirit level for making horizontal and vertical cuts with the blade of the chainsaw.

REFERENCES:
patent: 544587 (1895-08-01), Moore
patent: 777641 (1904-12-01), Knighton
patent: 1166045 (1915-12-01), Gethmann
patent: 1204968 (1916-11-01), Hommel
patent: 1362813 (1920-12-01), Neidl
patent: 2194995 (1940-03-01), Berquist
patent: 2584917 (1952-02-01), Powell
patent: 3664032 (1972-05-01), Tompkins
patent: 4292741 (1981-10-01), Scandella
patent: 4295279 (1981-10-01), Sienknecht
patent: 4545129 (1985-10-01), Stone

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