APPARATUS FOR THE TRANSMISSION OF A ROTARY MOVEMENT THROUGH THE WALL OF A CHAMBER UNDER PRESSURE

摘要

An apparatus for the transmission of an oscillatory movement through the wall of a chamber under pressure, comprising a torsion tube having one open end and secured pressure tight in a corresponding recess of a wall and the other end being closed up pressure tight. A shaft is disposed concentrically in the torsion tube and is secured to the closed tube end, and the torsion tube is formed over its entire outer surface with a plurality of cavities with a small opening face and reduces locally the wall thickness of the tube.