Chain saw

Details Chain saw Chain saw

B - Operations, Transporting

23

D

B23D 55/08 (2006.01) B27B 13/10 (2006.01) B27B 17/14 (2006.01)

Patent

CA 2309362

The present invention relates to a chain saw comprising a chain arranged on a saw flange (5). The chain saw is usually arranged in a multi-purpose head of forestry machinery by a mounting flange (1) immobile in regard to the multi--purpose head, whereby the chain is rotated by a chain wheel (4) controlled by a power unit. In order to tighten the chain, the saw flange, or a relevant part of the chain saw comprising the same, is arranged to move parallel with the lon-gitudinal axis (A) of the saw flange in regard to the chain wheel. This is achieved by a tightening device and at least one supporting guide therein which are attached to the mounting flange of the chain saw or a structure ar-ranged therein. By arranging the supporting guide in the tightening device to extend onto both sides of the center of the chain wheel parallel with the longi-tudinal axis of the saw flange, the saw flange is made to move in a completely supported manner parallel with its longitudinal axis in regard to the chain wheel.

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