Patent ID: 8051743
Filing Date: 2011-11-08
Classification: B27B,F02B,F02D,Y10T

Abstract:
1. A throttle control device for controlling a variable engine throttle valve of a hand held tool grasped and supported by an operator, the device comprising; a forwardly extending wire ( 17 ) for transmitting a variable range of motion from a manually-actuated throttle control lever ( 12 ) turnably arranged about a first axis ( 14 ) to the variable throttle valve, one, rearward end of the wire being secured to a wire arm ( 15 ) that is turnably arranged about a second axis ( 16 ) and that is provided with one or several teeth ( 20 ) cooperating with corresponding teeth ( 19 ) on the throttle control lever ( 12 ) characterized in that the second axis ( 16 ) is arranged behind the first axis ( 15 ) with respect to the forward direction of the extending wire ( 17 ) and the second axis ( 16 ) is further from the variable throttle valve than the first axis ( 15 ), wherein the wire is coaxially rotatable with the wire arm about the second axis, the throttle control lever ( 12 ) cooperates with a safety lever ( 13 ) that prevents the throttle control lever from moving if the safety lever is not activated, the throttle control lever ( 12 ) is under the influence of a first return spring ( 24 ), the safety lever ( 13 ) is under the influence of a second return spring ( 25 ), and the first return spring ( 24 ) and second return spring ( 25 ) are parts of a one-piece formed spring.