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ClassID:

142728 ⎘

F04B9/117 - CPC Classification

Classification description:

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

Sub-classes:
Recent Application in this class:
#1
20250297599
2025-09-25

CONTINUOUS FLOW MULTI-PISTON PUMP

 #2
20250012298
2025-01-09

Hydraulic drive system for a construction and/or thick matter pump system, construction and/ or thick matter pump system, and method for operating a hydraulic drive system and/or a construction and/or thick matter pump system

 #3
20240328439
2024-10-03

CYLINDER IN PARTICULAR FOR HYDROGEN TANK CYCLING FACILITY

 #4
20230026231
2023-01-26

Method for Operating a High-Density Solids Pump and High-Density Solids Pump

 #5
20200240399
2020-07-30

Pump system for handling a slurry medium

 #6
20190309737
2019-10-10

Viscous material pump with adjustable limitation of the delivery pressure

 #7
20180058440
2018-03-01

Remotely reconfigurable high pressure fluid passive control system for controlling bi-directional piston pumps as active sources of high pressure fluid, as inactive rigid structural members or as isolated free motion devices

 #8
20170306946
2017-10-26

Pressure-maintaining valve arrangement for a purge circuit of a closed hydraulic circuit

 #9
20170150648
2017-05-25

Coolant supply unit, cooling unit, and electronic device

 #10
20170130711
2017-05-11

Remotely reconfigurable high pressure fluid passive control system for controlling bi-directional piston pumps as active sources of high pressure fluid, as inactive rigid structural members or as isolated free motion devices

 #11
20160281690
2016-09-29

Dual-stage cryogenic pump

 #12
20160230754
2016-08-11

Remotely reconfigurable high pressure fluid passive control system for controlling bi-directional piston pumps as active sources of high pressure fluid, as inactive rigid structural members or as isolated free motion devices

 #13
20160177932
2016-06-23

Pumping system for gaseous and liquid media

 #14
20150136418
2015-05-21

Deviation tolerant well plunger pump

 #15
20150050164
2015-02-19

Hydraulic machine, in particular hydraulic pressure exchanger

 #16
20140071623
2014-03-13

Coolant supply unit, cooling unit, and electronic device

 #17
20140023530
2014-01-23

PISTON PUMP FOR LIQUEFIED GAS

 #18
20130269803
2013-10-17

Fluid transfer device, ship including the same, and fluid for use in transfer device

 #19
20120301328
2012-11-29

Multistage piston compressor

 #20
20110277458
2011-11-17

Pumps

 #21
20090185915
2009-07-23

Digital control device

 #22
20050095147
2005-05-05

Pump system for delivering pressurized liquid