Patent ID: 7204088

Claim:
A lever device for a hydraulic operation, comprising: a piston for linearly moving in a hydraulic cylinder; a lever operatively supported such that the lever is rotatable relative to the hydraulic cylinder; an elastic member acting directly between the lever and the hydraulic cylinder for rotationally biasing the lever in a direction to generate hydraulic pressure in the hydraulic cylinder; and a pushrod disposed to push the piston by being pushed by a pushing portion of the lever as turned, the lever device comprising: a knocker member for pushing an end of the pushrod, said knocker member being supported to be rotatable with respect to the hydraulic cylinder, wherein the knocker member includes a knocker portion for pushing an end of the pushrod, the knocker portion having a projecting portion for covering a part of the pushrod in a manner to sandwich the part; and an adjusting mechanism for changing a distance between the knocker member and the pushing portion.