142731 ⎘
Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
Sub-classes:DRIVE SYSTEM FOR A POSITIVE DISPLACEMENT PUMP
#2GAS SUPPLY PUMP FOR SHIP DUAL FUEL ENGINE
#3Drive system for a positive displacement pump
#4Gas supply pump for ship dual fuel engine
#5Drive system for a positive displacement pump
#6Rod pump having a hydraulic cylinder and a variable speed reversible motor-generator
#7Viscous material pump with adjustable limitation of the delivery pressure
#8DRIVE SYSTEM FOR A POSITIVE DISPLACEMENT PUMP
#9Cryogenic fluid pump
#10Piston cartridge for piston pump
#11System for high pressure, high shear processing of fluids
#12Hydraulic drive multi-element cryogenic pump
#13HIGH-PRESSURE CYLINDER ASSEMBLY FOR WATERJET INTENSIFIER PUMPS, AND RELATED METHODS
#14Hydraulic pump for ophthalmic surgery
#15Mechanical drive system for a pulseless positive displacement pump
#16Volumetric pressure exchanger for a seawater desalination plant and desalination plant
#17Multistage piston compressor
#18Self-reciprocating energy recovery device
#19Fluid pressure exchange mechanism and method of operating same
#20Positive displacement hydro pump
#21Three-way poppet valve for work exchanger
#22Pressure exchange apparatus with dynamic sealing mechanism
#23Pressure exchange apparatus
#24Method and apparatus for compressing a gas to a high pressure
#25Pressure exchanger system