Safety circuit for a hydraulic system
Series - parallel selector for steering and implement
Simplified load sensitive hydraulic system for use with a vehicl
Speed override control for hydraulic motors
Stacker control
Steering valve for hydrostatic drive
Straight traveling hydraulic circuit
Straight travelling apparatus for heavy construction equipment
Straight travelling apparatus for heavy construction equipment
Summing pressure compensation control
Supply valve arrangement for closed center hydraulic system
Swing flow supplemental travel for an excavator
Swing-frame motor flow and sensed load pressure control system f
System for automatically controlling relative operational veloci