Pressure-medium working cylinder with a flexible diaphragm

摘要

The pot or roller diaphragms clamped in place in a sealing manner by means of widened edge beads in the cylinder housing and the like often exhibit the undesirable tendency in use to be pulled out locally and to thereby give rise to leakage. According to the invention, this phenomenon is prevented by forming surface prominences on one or both diaphragm sides in the transition area to the edge bead.