Gerald C. Anderson - Oconomowoc WI Kenneth F. Frank - West Bend WI
Assignee:
Dynex/Rivett Inc. - Pewaukee WI
International Classification:
F15B 13043
US Classification:
91447
Abstract:
An electrohydraulic proportional valve wherein an electromagnetic force motor sends a mechanical signal to a pilot actuator which moves a main spool. The pilot actuator includes a pilot spool slidably received in a pilot sleeve. A feedback spool which is movable with the main spool has a camming surface against which the pilot sleeve rides. A load check valve is provided that isolates the load pressure from system pressure when desired.