Patent ID: 6607178
Filing Date: 2003-08-19
Classification: F02M,F16H,F16K,Y10T

Abstract:
A device for transferring thrust between an actuator and a plunger, the actuator moving a first displacement relative to a body and the plunger moving a second displacement relative to the body, the device comprising:a tappet having a first end face, a second end face spaced along an axis from the first end face, and a cylindrical surface surrounding the axis and extending between the first and second end faces, the cylindrical surface having a first contact portion adapted for contiguously engaging the body, a second contact portion adapted for contiguously engaging the actuator, and a third contact portion adapted for contiguously engaging the plunger, the first contact portion including a circumferential segment of a first right circular cylinder having a first radius, the second contact portion including a circumferential segment of a second right circular cylinder having a second radius, and the third contact portion including a circumferential segment of a third right circular cylinder having a third radius, the first, second, and third radiuses being equal; and a guide having first and second surfaces, the first surface confronting the first end face and the second surface confronting the second end face such that movement of the tappet along the axis is substantially prevented.