| 摘要 |
PURPOSE:To enable a piston of acting with a stroke elongated or shortened at a prescribed ratio to input displacement stroke under remote control by providing a nozzle which is of the movable type and placing a lever mechanism which shortens or elongates the displacement of the piston, between the nozzle and the piston. CONSTITUTION:A rod 25 having a shorter diameter than a piston rod 22a is firmly attached to the upper end face of a piston 22, a movable nozzle 23 is set slidably in the same direction as the piston 22, and a lever mechanism 27 which can vary the displacement ratio between the rod 26 and the movable nozzle 23 is set therebetween. The displacement ratio between the movable nozzle 23 and the piston 22 can then be varied by the lever mechanism 27. Thus the piston 22 of which the displacement stroke is shortened or elongated by the input displacement of a flapper 24 can be placed under the remote control.
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