ClassID:

142763

F04B11/005 - CPC Classification

Classification description:

Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons

Sub-classes:
Recent Application in this class:
#1
20260063115
2026-03-05

CONSTANT FLOW PUMP

#2
20260028977
2026-01-29

Diaphragm Pump Assemblies

#3
20240200551
2024-06-20

HYDRAULIC CIRCUIT ARRANGEMENT AND CONTROL SYSTEM FOR GANGED ELECTRONICALLY-COMMUTATED PUMPS

#4
20230120606
2023-04-20

Pumping systems

#5
20230097835
2023-03-30

Device and method for the provision of pressurized medium for injection into a high pressure process

#6
20230082868
2023-03-16

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

#7
20220412341
2022-12-29

CONTROL ARRANGEMENT AND METHOD FOR OPERATING DIAPHRAGM PUMP SYSTEMS

#8
20220372857
2022-11-24

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

#9
20210231113
2021-07-29

Pulsation damping system

#10
20210190049
2021-06-24

HIGH PRESSURE PUMP

#11
20210156368
2021-05-27

Hydraulic system

#12
20210025375
2021-01-28

Non-pulsating pump and method of controlling the same

#13
20200248682
2020-08-06

Pumping Systems

#14
20200088179
2020-03-19

Method for reducing the pulsation level in a multi-compressor plant employing reciprocating compressors

#15
20200025192
2020-01-23

Control arrangement and method for operating diaphragm pump systems

#16
20190195208
2019-06-27

Non-pulsation pump having stroke adjustment mechanism

#17
20190178234
2019-06-13

Cavitation avoidance system

#18
20190154016
2019-05-23

Fluid pump with cam geometry to reduce pulsations

#19
20190154015
2019-05-23

Ultra high pressure pump with an alternating rotation to linear displacement drive mechanism

#20
20190010935
2019-01-10

Ultra high pressure pump with an alternating rotation to linear displacement drive mechanism

#21
20180314288
2018-11-01

Trigger guard and pendant for a portable hydraulic power unit

#22
20180313350
2018-11-01

Solenoid valve for a portable hydraulic power unit

#23
20180313344
2018-11-01

Portable hydraulic power unit having a pump fixed to an exterior side of a fluid supply tank

#24
20180313342
2018-11-01

Portable hydraulic power unit

#25
20180209405
2018-07-26

IMPROVED PULSE-FREE METERING PUMP AND METHODS RELATING THERETO

#26
20180066638
2018-03-08

High pressure pump

#27
20180058441
2018-03-01

High pressure fuel gas pump

#28
20180003171
2018-01-04

Method and system for minimizing vibration in a multi-pump arrangement

#29
20170306938
2017-10-26

Ultra high pressure pump with an alternating rotation to linear displacement drive mechanism

#30
20170298914
2017-10-19

Liquid supply system

#31
20170167476
2017-06-15

Pumping system for chromatography applications

#32
20160341226
2016-11-24

Controlled pump augmentation for active vibration isolation

#33
20160271965
2016-09-22

Liquid supply device and liquid ejection device

#34
20160131116
2016-05-12

Pump arrangement

#35
20160076526
2016-03-17

Ultra High Pressure Pump With An Alternating Rotation To Linear Displacement Drive Mechanism

#36
20150345484
2015-12-03

SYRINGE PUMP SYSTEM FOR PULSE-FREE METERING AND PRECISE MIXING IN HPLC UHPLC, MICRO-HPLC AND NANO-HPLC

#37
20150330374
2015-11-19

THICK-MATTER PUMP FOR PRODUCING A CONTINUOUS THICK-MATTER FLOW AND METHOD FOR OPERATING A THICK-MATTER PUMP FOR PRODUCING A CONTINUOUS THICK-MATTER FLOW

#38
20150252796
2015-09-10

Pump systems and associated methods for use with waterjet systems and other high pressure fluid systems

#39
20150233361
2015-08-20

MULTIPLEX PUMP SYSTEMS AND ASSOCIATED METHODS OF USE WITH WATERJET SYSTEMS AND OTHER HIGH PRESSURE FLUID SYSTEMS

#40
20140248160
2014-09-04

Positive displacement pump and operating method thereof

#41
20140170005
2014-06-19

Liquid supply apparatus

#42
20140134001
2014-05-15

Fluid supply apparatus

#43
20140127037
2014-05-08

FLUID SUPPLY APPARATUS

#44
20130263615
2013-10-10

OSCILLATING FLOW FREEZER

#45
20130068091
2013-03-21

Hydraulic pump/motor and method of suppressing pulsation of hydraulic pump/motor

#46
20130034457
2013-02-07

Distributing valve for concrete pump and the concrete pump

#47
20120186518
2012-07-26

Rotary piston pump for metering a coating agent

#48
20110020155
2011-01-27

Ultra high pressure pump with an alternating rotation to linear displacement mechanism

#49
20100303657
2010-12-02

Operating method for fluid working machine

#50
20100303638
2010-12-02

Method of operating a fluid working machine

#51
20100202903
2010-08-12

Piston pump and operating method therefor

#52
20100143155
2010-06-10

Piston Pump Having A Force Sensor And A Method For Controlling Said Pump

#53
20100034666
2010-02-11

Electronic camshaft motor control for piston pump

#54
20090304532
2009-12-10

MULTIPLE MEMBRANE PUMP FOR FOOD LIQUIDS AND THE LIKE

#55
20090005897
2009-01-01

Method for supplying a chemical or chemical compound in a fibrous web machine and an apparatus for implementing the method

#56
20080170954
2008-07-17

Cylinder assembly for providing uniform flow output

#57
20080014106
2008-01-17

Method of operation of a reciprocating positive-displacement pump and reciprocating positive-displacement pump

#58
20060124546
2006-06-15

Method and device for desalinating water while overcoming decreases in pressure

#59
20060074325
2006-04-06

Air pump, pump system, electronic blood pressure monitor, and massager

#60
20050263207
2005-12-01

Method and device for pouring plastic raw material liquid

#61
20050100464
2005-05-12

Liquid feed pump apparatus

#62
20050063848
2005-03-24

Double-acting reciprocating downhole pump

#63
15870853
2020-11-03

Compact pump with reduced vibration and reduced thermal degradation