Apparatus and method for reducing gas lock in downhole pumps

Apparatus and method for the indirect measurement and...

Apparatus and method of protecting a water pump driven by a...

Apparatus capable of use as a pump or a motor

Apparatus for analysis and control of a reciprocating pump...

Apparatus for and method of pumping output fluids such as...

Apparatus for applying a back pressure to a pump drive shaft...

Apparatus for automatically mixing a cleaning solution for...

Apparatus for charging a pumping device

Apparatus for continuous pressure feeding of slurry

Apparatus for controlling a fluid motor

Apparatus for controlling diaphragm extension in a diaphragm...

Apparatus for controlling gas temperature in compressors

Apparatus for controlling the torque of an engine pump...

Apparatus for conversion of the power source for a motor...

Apparatus for converting a pump to a controller

Apparatus for disabling a reciprocating pump jack during...

Apparatus for dispensing enteral alimentation

Apparatus for displacing high viscous substances

Apparatus for electrostatically isolating and pumping...