| 摘要 |
<p>1. A hydraulic brake actuating system, in particular for a vehicle, comprising at least one friction element (14) disposed adjacent a member to be braked, a hydraulic actuating device (50) comprising a chamber (52) having at least one expansible portion connected to the friction element and actuatable by a pressure liquid to displace the friction element thereby to move it into frictional engagement with the member to be braked, the expansible portion of the chamber being defined by a cylindrical metallic bellows (51) comprising a frontal extremity adjacent the friction element, and means for connecting the actuating device to a liquid pressure source (80, 200), characterized in that the bellows (51) is made of resilient metal and in that the connection means comprise, adjacent the hydraulic actuating device (50), a pressure-transmitting device (20) having a movable wall (23) provided with a check valve (31).</p> |
