ENSEMBLE PNEUMATIQUE DE MAINTIEN

摘要

A pneumatic holding device with at least one piston which can be impinged with a pressurized fluid medium at one face and displaceable in a cylinder against the action of a restoring force. The cylinder connection leading to the impinged face of the piston can be obturated by a valve mechanism which can be closed by the impinging fluid medium. The valve mechanism contains a valve body in which there is mounted a check or relief valve which opens in the direction of closing of the valve body. When open the valve mechanism communicates the impinged face of the piston with the face of the piston not impinged by the fluid medium.