Mechanism to control power chain saw clutch operation

摘要

A power saw, especially power chain saw, in which a sprocket wheel is driven by a motor through the intervention of an intermediate clutch acting as safety clutch, and which comprises a control member for disengaging the intermediate clutch. The control member is by means of an actuating member returnable to its ineffective position. The power saw furthermore comprises a follower member which is movable from an engaged position to a disengaged position and vice versa for respectively connecting and disconnecting the clutch elements of the intermediate clutch. The power saw also includes a clutch with a clutch drum and also has a brake member cooperating with the clutch drum. The brake member is designed as brake band and is looped around the clutch drum. The control member and the brake band have one end mounted on a common holding element which latter by means of the actuating member and against the thrust of a spring is held in its rest position and by the force of the spring is movable into a disengaged position for releasing the brake band and for disengaging the control member.