发明授权
US5460074A Vacuum brake power booster 失效
真空制动助力器

Vacuum brake power booster
摘要:
A vacuum brake power booster for automotive vehicles having control valve which is operable, irrespective of an actuating rod displacing a valve piston (9), by an electromagnet which actuates a third sealing seat thereby ventilating the working chamber. To minimize the independent actuating force generated by the electromagnet the electromagnet, of the present invention, is rigidly connected to the valve piston, and is arranged to be slidable in the control housing so that the third sealing seat is synchronously movable with the valve piston.
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