ClassID:

142568

F04B1/0404 - CPC Classification

Classification description:

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement Details or component parts

Sub-classes:
Recent Application in this class:
#1
20260028971
2026-01-29

PISTON PUMP AND METHOD OF MANUFACTURING THE SAME

#2
20250382861
2025-12-18

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#3
20250347269
2025-11-13

PISTON PUMP AND METHOD OF MANUFACTURING THE SAME

#4
20250198397
2025-06-19

REMANUFACTURED YOKE FOR FUEL PUMP

#5
20250180077
2025-06-05

WELL SERVICING PUMP SYSTEM WITH DRIVELINE ASSEMBLY FOR HYDRAULIC FRACTURING SYSTEM

#6
20250092854
2025-03-20

BEARING ARRANGEMENT FOR RADIAL PISTON UNITS

#7
20240309839
2024-09-19

BEARING ARRANGEMENT FOR RADIAL PISTON UNITS

#8
20240240623
2024-07-18

RADIAL PISTON PUMP, AND PROCESS FOR MANUFACTURING A RADIAL PISTON PUMP

#9
20240229870
2024-07-11

Well servicing pump system with driveline assembly for hydraulic fracturing system

#10
20240093666
2024-03-21

HYDROSTATIC RADIAL PISTON UNIT

#11
20240044235
2024-02-08

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#12
20240044233
2024-02-08

MECHANICALLY RESILIENT AND WEAR RESISTANT STEEL COMPOSITIONS AND HIGH-PRESSURE PUMPS AND PUMP COMPONENTS COMPRISED THEREOF

#13
20230392487
2023-12-07

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#14
20230323873
2023-10-12

MULTI-PIECE FLUID END

#15
20230138582
2023-05-04

Cover, fluid end and plunger pump

#16
20230082868
2023-03-16

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

#17
20220412201
2022-12-29

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

#18
20220372857
2022-11-24

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

#19
20200400132
2020-12-24

Reciprocating pump

#20
20200080541
2020-03-12

Method and system for harnessing wind energy using a tethered airfoil

#21
20200011314
2020-01-09

HIGH PRESSURE FUEL PUMP

#22
20190345921
2019-11-14

Pressure pump connecting rod monitoring

#23
20190277279
2019-09-12

Reciprocating pump with dual circuit power end lubrication system

#24
20190178243
2019-06-13

Multi-piece fluid end

#25
20190145400
2019-05-16

Method for remanufacturing fluid end block

#26
20190136840
2019-05-09

Reciprocating pump

#27
20190093616
2019-03-28

Piston device and pump device

#28
20190032616
2019-01-31

High-Pressure Fuel Pump

#29
20180372077
2018-12-27

Device for choking a fluid flow and corresponding piston pump for delivering fluids

#30
20180340532
2018-11-29

Reciprocating pumps and closures therefore

#31
20180304873
2018-10-25

Hydraulic unit

#32
20180274547
2018-09-27

Motor for fans or blowers, pumps or compressors, method for operating such a motor and blower system having one or more motor(s)/blower(s)

#33
20180245573
2018-08-30

Hydraulic Control Apparatus and Brake System

#34
20180180008
2018-06-28

High-pressure fuel pump

#35
20180135621
2018-05-17

Fluid end and center feed suction manifold

#36
20180087486
2018-03-29

Braking system for a hydraulic machine

#37
20170363082
2017-12-21

Fluid-end of a high pressure pump

#38
20170335831
2017-11-23

Hydraulic device with radial pistons comprising at least one ball bearing

#39
20170292515
2017-10-12

Precipitation hardened martensitic stainless steel and reciprocating pump manufactured therewith

#40
20170138334
2017-05-18

Radial piston machine having braking means secured against twisting

#41
20170058890
2017-03-02

Reciprocating pump

#42
20170021814
2017-01-26

Hydraulic unit

#43
20160312808
2016-10-27

Bolt retainer for pump fluid end

#44
20160305384
2016-10-20

Automotive fuel pump

#45
20160177945
2016-06-23

Reciprocating pump with dual circuit power end lubrication system

#46
20160160823
2016-06-09

High pressure pump

#47
20160131121
2016-05-12

Device for choking a fluid flow and corresponding piston pump for delivering fluids

#48
20160102657
2016-04-14

Piston pump for a hydraulic vehicle brake system

#49
20160025054
2016-01-28

High pressure pump having unitary discharge and relief valve

#50
20150300331
2015-10-22

PUMP MECHANISM

#51
20150152862
2015-06-04

High pressure pump with pressurizing chamber

#52
20150020776
2015-01-22

Fuel delivery system containing high pressure pump with isolation valves

#53
20140341758
2014-11-20

Reciprocating compressor or pump and a portable tool powering system including a reciprocating compressor

#54
20140314601
2014-10-23

High pressure fuel pump

#55
20140251124
2014-09-11

Modular storage base for pumping devices

#56
20140216417
2014-08-07

Fuel pump

#57
20140147314
2014-05-29

Piston pump for delivering fluids, and corresponding assembly process for a piston pump

#58
20140050597
2014-02-20

Pump unit for a high-pressure pump

#59
20140047973
2014-02-20

Hydraulic device, in particular low-pressure accumulator with a closure element

#60
20140030125
2014-01-30

Spring element and corresponding piston pump for delivering fluids

#61
20140003982
2014-01-02

Pump having a throttle

#62
20130343914
2013-12-26

Variable radial fluid device with differential piston control

#63
20130177462
2013-07-11

Dosing pump arrangement

#64
20130112074
2013-05-09

Support Mechanism for the Fluid End of a High Pressure Pump

#65
20130047594
2013-02-28

COVER FOR HYDRAULIC PUMP IN RENEWABLE ENERGY TURBINE GENERATOR

#66
20120251366
2012-10-04

High pressure pump having unitary discharge and relief valve

#67
20120234403
2012-09-20

Housing with intersecting passages for high pressure fluid applications

#68
20120195780
2012-08-02

High pressure pump with pressurizing chamber enclosed within cylinder inserted into housing

#69
20120141304
2012-06-07

Pump Housing for a Hydraulic Unit in a Motor Vehicle

#70
20120132177
2012-05-31

Fuel injection system for an internal combustion engine

#71
20120103179
2012-05-03

Pump unit

#72
20120087817
2012-04-12

Three element diaphragm damper for fuel pump

#73
20110253109
2011-10-20

High-pressure fuel pump assembly mechanism

#74
20110247488
2011-10-13

High-pressure pump

#75
20110100319
2011-05-05

Lubrication system for fuel pump of GDI engine

#76
20110099995
2011-05-05

PISTON PUMP OF A HYDRAULIC VEHICLE BRAKE SYSTEM

#77
20110041681
2011-02-24

POSITIVE-DISPLACEMENT MACHINE

#78
20110030213
2011-02-10

HYDRAULIC INSTALLATION TOOL FOR PUMP PLUNGER

#79
20100202903
2010-08-12

Piston pump and operating method therefor

#80
20100183449
2010-07-22

High-pressure pump for supplying fuel to an internal-combustion engine

#81
20100170480
2010-07-08

HIGH-PRESSURE FUEL PUMP WITH ROLLER TAPPET

#82
20100163005
2010-07-01

HIGH-PRESSURE PUMP FOR DELIVERING FUEL WITH AN IMPROVED DESIGN OF THE BEARING ARRANGEMENT FOR THE SUPPORT OF THE CAM SHAFT

#83
20090269227
2009-10-29

PISTON PUMP WITH AT LEAST ONE STEPPED PISTON ELEMENT

#84
20090220363
2009-09-03

Piston pump for a vehicle brake system with a sealing element

#85
20090159053
2009-06-25

Pumping element for a fluid pump and method

#86
20090151704
2009-06-18

Fuel pump set

#87
20090126690
2009-05-21

Fuel pump

#88
20090120280
2009-05-14

Fuel injection pump and method for assembling the same

#89
20090110575
2009-04-30

High-pressure fuel supply pump and the manufacturing method

#90
20080191549
2008-08-14

Pressure Generator for a Vehicle Brake System and Method for Mounting Said Pressure Generator

#91
20080175731
2008-07-24

Transfer pump for injection of fuel at high pressure

#92
20080031744
2008-02-07

High-pressure pump for a fuel injection system of an internal combustion engine

#93
20080003119
2008-01-03

Radial type reciprocating compressor and portable tool powering system with flexing connecting rod arrangement

#94
20080003112
2008-01-03

Radial type reciprocating compressor and portable tool powering system with cylinder liner, valve and annular manifold arrangement

#95
20070292282
2007-12-20

RECIPROCATING COMPRESSOR OR PUMP AND A PORTABLE TOOL POWERING SYSTEM INCLUDING A RECIPROCATING COMPRESSOR

#96
20070286743
2007-12-13

Self-energizing pump for overrunning clutch

#97
20070277785
2007-12-06

Radial piston pump for common rail injection systems

#98
20070144488
2007-06-28

High-pressure pump for a fuel, with sump in communication with the fuel

#99
20070128058
2007-06-07

High-pressure pump

#100
20070116583
2007-05-24

FUEL SUPPLY PUMP

#101
20070098580
2007-05-03

Pump gear

#102
20070071614
2007-03-29

Fluid pump having plunger and method of monoblock casting for housing of the same

#103
20070065297
2007-03-22

Measurement device

#104
20060275164
2006-12-07

High pressure pump

#105
20060239847
2006-10-26

High pressure pump for a fuel injection system of an internal combustion engine

#106
20060120646
2006-06-08

Bearing, bearing mechanism, and plunger pump

#107
20060104828
2006-05-18

Radial plunger pump and method for manufacturing pump housing

#108
20060083634
2006-04-20

Pressure washer having oilless high pressure pump

#109
20060062677
2006-03-23

High pressure pump

#110
20060056995
2006-03-16

Motor-pump unit

#111
20060008363
2006-01-12

High-pressure pump, in particular for a fuel injection system of an internal combustion engine

#112
20050207914
2005-09-22

Motor pump assembly

#113
20050207908
2005-09-22

Radial piston pump for fuel injection system having improved high-pressure resistance

#114
20050178441
2005-08-18

Fuel pump for inter-cylinder direct fuel injection apparatus

#115
20050129532
2005-06-16

Fuel supply pump having inner lubricating groove

#116
20050100448
2005-05-12

Radial piston pump

#117
19069120
2025-11-11

Piston pump and method of manufacturing the same

#118
18658876
2025-04-08

Piston pump and method of manufacturing the same