发明授权
US5826735A Railcar cushion device valving systems 失效
轨道式缓冲装置阀门系统

Railcar cushion device valving systems
摘要:
A valving system for a rail car cushion device including several pressure control relief sequence valves (PCRS) mounted in the cylinder wall of the cushion device each having hydraulic biasing applied to retain a valve piston against a seat until a preload pressure is reached, with one or more optional spike control (SC) valves mounted in a cushion device piston head.
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