Anti-kick saw chain and a kick-reducing method

Details Anti-kick saw chain and a kick-reducing method Anti-kick saw chain and a kick-reducing method

1981-11-16

1983-06-14

Meister, James M.

Cutting

Processes

Cut advances across work surface

83833, 83834, B27B 3314

Patent

active

043876153

ABSTRACT:
To reduce the possibility of a kick by a chain saw when cutting on the end of the bar, this invention provides cutter elements having spurs to cock the elements when the elements engage the idler sprocket on the end of the bar. As the elements begin to move in an arc around the idler sprocket, the spurs ensure that the leading depth gauge of the element does not fall away to expose the trailing teeth to too great a depth of cut. Instead, at any position in the arc, the spurs ensure that the depth between the depth gauge and the tooth of each element remains substantially no greater than the depth between the depth gauge and the tooth when the element is moving in a straight line. Preferably, the spur cocks the element so that the depth gauge is effectively higher than the tooth (i.e., the radius of the arc of the outside edge of the depth gauge is larger than the radius of the arc of the outside edge of the tooth). Both the novel cutter elements and a method of reducing the possibility of a kick are disclosed.

REFERENCES:
patent: 3745870 (1973-07-01), Lemery
patent: 3951027 (1976-04-01), Arff
patent: 4074604 (1978-02-01), Goldblatt

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