专利名称：PILOT CONTROL VALVE
发明人：BIANCHETTA D,US,LOHBAUER K,US申请号：US3771564D申请日：19720323公开号：US3771564A公开日：19731113
摘要：There is disclosed a pilot valve for operation of a main control valve wherein thepilot valve is provided with throttling means to modulate the control fluid to effect anaccelerated actuation of the main control valve and to provide an extended modulationrange for effective and precise control of the main control valve by the operator.
申请人：CATERPILLAR TRACTOR CO,US
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