Air-hydraulic pump with auxiliary pumping means

Apparatus for supplying hydraulic fluid

Automatic connecting valve for hydraulic systems

Automotive air conditioning apparatus

Compressor installation having a control valve arrangement for i

Controlled valving for a dual pump system

Double acting rack and gear-driven piston pump

Dual oil supply pump

Dual pump controls

Dual source hydraulic steering system

Efficiency fluid pumping system including sequential unloading o

Flow sensing auxiliary pump by-pass valve

Fluid pumping system

Fluid pumping system for automatic transmission

Fluid system

Gear pump

Hydraulic power pack

Hydraulic pump

Method and apparatus for metering multiple injection pump flow

Method and apparatus for regulating a volumetric fuel flow betwe