Pilot operated hydraulic device
Piston pump assembly having load responsive controls
Power conservation means for variable displacement pump fluid su
Power control for a hydrostatic transmission
Power drive unit and control system therefor
Power steering system for vehicles
Power transmission
Power transmission
Power- and moment-regulating system for a plurality of...
Pressure actuated signal fluid control for load responsive syste
Pressure compensating valve spool positioned by difference in pr
Pressure flow compensating control circuit
Pressure responsive hydraulic control circuit
Pressure-compensating hydraulic system for preventing unauthoriz
Pressurized fluid supply system
Programmable hydraulic power controls for injection molding mach
Pump capacity control device and valve device
Pump control apparatus for construction machine
Pump control system with limit signal generated at a given displ
Pump controller for construction machine