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US4296671A Hydraulic brake booster and control valve therefor 失效
液压制动助力器及其控制阀

Hydraulic brake booster and control valve therefor
摘要:
A hydraulic brake booster defines a pressure chamber (24) and includes a control valve (26). A sleeve (40) on the control valve includes a spacer (58) and the control valve includes an annular member (60). The spacer is engageable with a booster housing (14) to limit movement of the sleeve and the annular member is engageable with an accumulator valve assembly (32) during a failure mode to provide a safety power assist. The spacer is also maintained in spaced relation to the accumulator valve assembly.
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