Fluid pressure operated power actuator - has guide mechanisms between reversible membrane piston and housing acting with piston rods

摘要

The power and operating elements consist of a housing and a piston which, with a roller membrane arranged between two chambers in which are fluid media, aggregates and compounds. Guide mechanisms are between the piston and the housing sections. The guide mechanisms act with piston rods which extend through one or more chambers. The piston rod is movably fitted but axially fixed to the piston. It is on the side of the piston which is at the higher absolute pressure during the working stroke.