Electrohydraulic set device

An electrohydraulic set device comprising:

• a housing defining a common chamber;
• a piston movable in said common chamber and having an operating side facing said common chamber;
• a piston rod connected to said piston and extending in said common chamber;
• a hydraulic pressure passage for admitting hydraulic pressure into said common chamber for applying pressure to said piston to move said piston in a first direction in said housing;
• a control slide movable in said common chamber over said passage for closing said passage, said slide surrounding said piston rod in said chamber;
• an electromagnet connected to said housing having a coil surrounding said piston rod and disposed in said common chamber;
• an armature movably mounted in said common chamber, said control slide being abuttingly engageable with said armature for movement of said slide with movement of said armature, a first spring engaged between said armature and said piston rod for biasing said armature in said first direction, said coil being operable to exert a magnetic force on said armature in a second direction which is opposite from said first direction;
• and
• spring means connected between said housing and said armature for resiliently permitting movement of said armature in a direction parallel to a direction of movement of said slide and parallel to a length direction of said slide.