Patent ID: 6581509
Filing Date: 2003-06-24
Classification: B23B,F15B,Y10T

Abstract:
A rotary cylinder assembly for a machine tool, the rotary cylinder assembly extending along a longitudinal axis, comprising:a fluid shaft housing having extend and retract ports; a cylinder body housing a movable piston that extends or retracts a work piece mounted to the machine tool in response to fluid pressure supplied from said extend port or said retract port, respectively; a shaft end cover coupled between said fluid shaft housing and said cylinder body, said shaft end cover including: a first face orthogonally oriented to the longitudinal axis in sealing contact with said fluid shaft housing; a second face opposite said first face in sealing contact with said cylinder body; and a lock check system including first and second lock check cartridges housed in said shaft end cover, said lock check system further including a number of flow paths in communication with said extend and retract ports and said first and second lock check cartridges to provide fluid flow through said first and second lock check cartridges to said cylinder body, wherein at least a portion of at least one of said flow paths is formed by a channel along said first face.