| 摘要 |
<p>PCT No. PCT/GB80/00142 Sec. 371 Date May 15, 1981 Sec. 102(e) Date May 5, 1981 PCT Filed Sep. 15, 1980 PCT Pub. No. WO81/00697 PCT Pub. Date Mar. 19, 1981.A vehicle brake actuator has a piston (23) within a cylinder (22) for urging friction pad assemblies (19, 20) into braking engagement with a brake disc (21). The actuator incorporates a pressure accumulator (3) and an electrical valve (9) operable to supply pressure from the accumulator to the cylinder in response to the action of a brake pedal or other control device. The actuator may also incorporate a pump (1) for charging the accumulator, together with other equipment such as skid control device. A braking system incorporates one or more of the actuators and device for producing an electrical output in response to displacement of the brake control device for supply to the valve.</p> |
