| 摘要 |
PROBLEM TO BE SOLVED: To simplify a structure by improving a conventional device to guarantee the sequence of movement of at least two fluid-actuated displacement units. SOLUTION: A directional control valve that can be controlled by a piston rod (4) is integrated in a cylinder (Z). The directional control valve has a closed position and an open position, so that the valve is switched into the closed position when the piston rod (4) is not fully extended or not approximately fully extended, and into the open position when the piston rod (4) is fully or approximately fully extended, and a compression chamber (1a) of the cylinder (Z) is thereby placed in communication with a compression chamber of a secondary display unit (secondary cylinder 2b). COPYRIGHT: (C)2007,JPO&INPIT |
