Master cylinder i.e. main cylinder, for actuating hydraulic brake or clutch in motor vehicle, has blocking element integrated in feed connection which is released by blocking element while reducing fluid pressure

摘要

The cylinder (1) has an axial displaceable piston (2) defining a piston chamber. A connection (5) for a fluid (F) opens out into the chamber. A feed connection (7) includes a feed channel (8) for producing a fluid connection of the chamber with a feed container (9). The fluid connection between the feed container and the chamber is separable by a blocking device by fluid pressure acting on the element during building up of pressure of a fluid pressure in the chamber. The element is integrated in the feed connection which is released by the element while reducing the fluid pressure.