Patent ID: 6167973
Filing Date: 2001-01-02
Classification: A01D,A01G,Y10S

Abstract:
A trimming machine comprising: a cutting blade; an internal combustion engine having an output for driving said cutting blade; a centrifugal clutch for transmitting power from said internal combustion engine to said cutting blade; a throttle valve; a throttle wire operatively connected to said throttle valve; a manually operated throttle lever for controlling the output from said internal combustion engine by adjusting an opening of said throttle valve via said throttle wire; a clutch drum provided in said centrifugal clutch; a friction member arranged to oppose to said clutch drum; a first swinging member connected to said friction member and being allowed to swing between a braking position where said friction member is pressed against said clutch drum and a releasing position where said friction member is spaced from said clutch drum; a second swinging member connected to a connecting point at an intermediate portion of said throttle wire and being allowed to pivot about a pivoting pin with respect to said first swinging member when said throttle wire is moved by operating said throttle lever; and said throttle wire extending along a bent path which is bent at said connecting point so that said pivoting pin of said second swinging member is moved toward said bent path by a swinging movement of said first swinging member so that said throttle wire has no play when said first swinging member is at said releasing position and said pivoting pin of said second swinging member is moved away from said bent path by a swinging movement of said irst swinging member so that said throttle wire has play when said first swinging member is at said braking position.