Kenneth J. Stoss - Cedar Falls IA Richard A. Felland - Waterloo IA
Assignee:
Deere & Company - Moline IL
International Classification:
F15B 13043
US Classification:
13762564
Abstract:
A pilot-operated electrohydraulic valve has a pilot valve member exposed to load pressure via a load pressure feedback passage. Part of the pilot valve member forms a feedback valve which closes communication through the feedback passage upon a predetermined movement of the pilot valve so that the pilot valve can be fully opened without having to overcome the load pressure which would otherwise act on the pilot valve.
Kenneth D. Kramer - Waterloo IA Kenneth J. Stoss - Stillwater OK Gregory E. Sparks - Waterloo IA
Assignee:
Deere & Company - Moline IL
International Classification:
H01F 708
US Classification:
335227
Abstract:
A solenoid includes a coil, a pole assembly, an armature movable in the pole assembly and an air gap separating the armature from part of the pole assembly. A single mumetal washer may be fixed to the armature adjacent the air gap or a pair of mumetal washers may be fixed to the armature and to one of the pole parts on opposite sides of the air gap.
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