142716 ⎘
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 only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
Sub-classes:PISTON LIMIT SENSING FOR FLUID APPLICATION
#2Proportional volumetric dosing unit
#3Reverse Osmosis Pump Incorporating Variable Rejection Piston Design
#4Liquid dispenser comprising piezoelectric detector
#5CRYOGENIC PUMP
#6Fluid-driven linear motor
#7HYDRAULIC PUMPING SYSTEM WITH PISTON DISPLACEMENT SENSING AND CONTROL
#8Liquid dispenser comprising piezoelectric detector
#9Mechanical refrigeration system
#10System to pump fluid and control thereof
#11Method, system and use of controlling working range of a pump bellows
#12Reverse Osmosis Pump Incorporating Variable Rejection Piston Design
#13Dual-pressure boosting liquid partition device, system , fleet and use
#14Bottom hole assembly including a multi-stage reciprocating and automatically reset pump
#15Linear hydraulic pump and its application in well pressure control
#16Hydraulically synchronized pumps where the hydraulic motor of the master pump hydraulically drives the hydraulic motor of the slave pump
#17Linear Drive Beam Pumping Unit
#18Piston limit sensing for fluid application
#19Volumetric pump
#20Hydraulically-driven double-acting mud pump
#21System to pump fluid and control thereof
#22USE OF BUOYANCY TYPE POWER GENERATION METHOD
#23Fuel supply device and fuel supply method
#24Linear hydraulic pump and its application in well pressure control
#25Hydraulic pumping system with enhanced piston rod sealing
#26Hydraulic pumping system with piston displacement sensing and control
#27Substance dispensing system
#28Hydraulically driven bellows pump
#29Detecting end of stroke in a hydraulic motor
#30Hydraulically actuated downhole pump with traveling valve
#31High-pressure fluid mixing pump control system and fluid suction control method
#32Pneumatic piston pump metering and dispense control
#33Substance dispensing system
#34Pumping assembly
#35Cooling device fitted with a compressor
#36Hydraulically controlled reciprocating pump system
#37Two-step hydraulic valve
#38Proportional dosimeter for metering an auxiliary liquid into a main liquid
#39Liquid metering pump, and device for detecting the variation in pressure for such a pump
#40Method of manufacturing a positive displacement injection pump
#41High pressure pump including hollow stud
#42Hydraulically controlled reciprocating pump system
#43Hydraulically driven machine improvement
#44Lubricating pump with double-acting drive piston
#45Liquid delivery method and apparatus
#46Apparatus and method for pumping a cryogenic fluid from a storage vessel and diagnosing cryogenic pump performance
#47Apparatus and method for pumping a fluid from a storage vessel and detecting when the storage vessel is empty
#48Positive displacement injection pump
#49Reciprocating pump drive apparatus
#50Device for Supplying Ink to a Printing Press
#51Pumps with diaphragms bonded as bellows
#52Actuators with diaphragm and methods of operating same
#53Concrete-mortar transfer system of concrete pump car
#54Pumping assembly
#55Rodder pump
#56Combined piston fluid motor and pump
#57Fluid powered proportioning pump and post-mix beverage dispenser system using same
#58Hydraulic device for pumping molten metal and/or controlling a molten metal flow
#59Uniformly pressurized thermal energy recovery systems