Abstract: A fluid-operated piston-type actuator includes a body having first and second axial ends and an inner surface that defines a bore that opens through at least one of the first and second axial ends to define an open end of the bore. A piston is slidably positioned in the bore. An end wall is positioned in blocking relation with the open end of the bore. The end wall comprises a peripheral surface that defines a first circumferentially extending groove that is axially aligned with a second circumferentially extending groove defined in the inner surface of the body when the end wall is positioned in blocking relation with the open end of the bore. The end wall further comprises an inner face oriented toward the piston and an opposite outer face oriented away from the piston. The first groove is located axially between the inner and outer faces.

Abstract: A fluid-operated piston-type actuator includes a body having first and second axial ends and an inner surface that defines a bore that opens through at least one of the first and second axial ends to define an open end of the bore. A piston is slidably positioned in the bore. An end wall is positioned in blocking relation with the open end of the bore. The end wall comprises a peripheral surface that defines a first circumferentially extending groove that is axially aligned with a second circumferentially extending groove defined in the inner surface of the body when the end wall is positioned in blocking relation with the open end of the bore. The end wall further comprises an inner face oriented toward the piston and an opposite outer face oriented away from the piston. The first groove is located axially between the inner and outer faces.

Abstract: An elongated cam (A) fixed centrally at one end longitudinally within a cylinder is inserted within a cavity in an end of a piston rod (C) which has a cam follower (D) positioned therein and fixed against longitudinal movement so as to reduce the length of the stroke necessary to turn a member adjacent the other end of the piston rod through a given angle.