Hydraulic lock for axial motion output device

摘要

A system for locking the axial position of an axial motion output device upon the loss of an electrical input signal includes a locking device operatively associated with the output device and adapted for movement between a neutral position in which the output device can move freely relative to the locking device (24) and a locking position in which the locking device frictionally engages the output device (16) with a sufficient amount of force to prevent further movement thereof upon the loss of an electrical input signal.