Patent ID: 6209412
Filing Date: 2001-04-03
Classification: F02B,Y10T

Abstract:
An operation-control lever unit for regulating power of an engine of an engine-powered working machine to control operation of a working tool of the engine-powered working machine, the operation-control lever unit comprising:an operation-control handle having a grip portion and an enlarged head portion at an end of the grip portion;a throttle lever pivotally mounted to the head portion of the operation-control handle and pivotally movable about a pivot axis of the throttle lever within a predetermined angular range;a lock lever pivotally mounted by a support shaft to the head portion of the operation-control handle and pivotally movable about an axis of the support shaft, the lock lever being slidably movable along the axis of the support shaft; anda throttle-lever holding mechanism operative in response to pivotal movement of the lock lever in a locking direction to frictionally hold the throttle lever at a desired position within the predetermined angular range, the throttle-lever holding mechanism having a first cam coaxial with the support shaft and formed integrally with the head portion of the operation-control handle, a second cam disposed on the lock lever in coaxial relation with the support shaft and coacting with the first cam to displace the lock lever along the support shaft in a first direction away from the first cam, and resilient means disposed behind the second cam when viewed from the first cam for resiliently urging the second cam toward the first cam.