SCREW PUMP AND ITS COMPONENTS

NON-LUBRICATED COMPRESSOR WITH ABRADABLE SEALING ELEMENT AND RELATED METHOD FOR ASSEMBLING IT

FREE-MOLD STATOR FOR A PROGRESSING CAVITY PUMP

Scroll compressor

Rotary engine rotor and method

Method and apparatus for an end seal for increasing efficiency of a submersible multistage labyrinth-screw pump

Uniaxial eccentric screw pump with radial adjustment of the stator

PUMP FOR CONVEYING A FLUID

Eccentric screw pump with a modular design with a compressible stator lining to adjust for wear and/or improve sealing

Submersible centrifual pump having a hydrostatic support including thrust and support disks

Screw pump or machine with a liner that bends and/or pivots with the rotors

Conveyor device at least for conveying a fluid and pump comprising such a conveyor device

Eccentric screw pump with a pressure chamber between an elastomeric stator portion and a casing

METAL FELT AND BRUSH STRUCTURES AS SEALING ELEMENTS IN METAL-METAL MUD MOTORS

Arc turbine

Stator element of a progressive cavity pump and progressive cavity pump

Liquid pumping device with concave caves and convex liquid extruding component

Load balanced power section of progressing cavity device

Mud motor stators and pumps and method of making

Scroll compressor having wear preventing member located between key portion of orbiting scroll and key of Oldham ring

Load balanced power section of progressing cavity device

WATER PUMP

Compressor and bearing assembly

Mud motor stators and pumps and method of making

Rotary pump having a casing being formed with a communicating hole communicating a space that is between the side plate and the wall surface of the driving machine

Screw spindle pump

Compressor and bearing assembly

Progressive cavity pump/motor stator including framework elements and grooves defining chambers

Pump and its manufacturing method

Pump having a housing and a rotor capable of rotating in the housing

Flexible impeller pump

Process for manufacturing casing, and vacuum pump

Sliding vane pump

Screw spindle machine and method of manufacturing the same

System and method for monitoring pump lining wear

Pre-pressurization pump liner for vane pump

Liquid ring pump with liner

Stator inserts, methods of fabricating the same, and downhole motors incorporating the same

Rotor for a vane pump, made of plastic material reinforced by metallic foil

Pumps and pump-heads comprising internal pressure-absorbing member

Rotary pump provided with an axially movable blade

Method and apparatus for a submersible multistage labyrinth-screw pump