ClassID:

142709

F04B9/045 - CPC Classification

Classification description:

Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics

Recent Application in this class:
#1
20260078870
2026-03-19

COMPACT VOLUMETRIC PUMP

#2
20260063115
2026-03-05

CONSTANT FLOW PUMP

#3
20260014575
2026-01-15

PORTABLE AIRLESS SPRAYER

#4
20250369430
2025-12-04

WATER PUMP STRUCTURE AND ORAL IRRIGATOR

#5
20250297601
2025-09-25

HYDRAULIC PISTON PUMP ASSEMBLIES

#6
20250257723
2025-08-14

VALVELESS, MECHANICAL, PRESSURE REGULATING PUMP

#7
20250075689
2025-03-06

RADIAL PISTON PUMP, METHOD FOR OPERATING A RADIAL PISTON PUMP, AND STEERING SYSTEM

#8
20250012263
2025-01-09

HIGH-PRESSURE WATER PUMP LUBRICATED BY WATER OR AQUEOUS SOLUTION

#9
20240424509
2024-12-26

PORTABLE AIRLESS SPRAYER

#10
20240247647
2024-07-25

COMPACT VOLUMETRIC PUMP

#11
20240141880
2024-05-02

BATTERY-OPERATED RECIPROCATING PUMP FOR LUBRICANTS

#12
20240060488
2024-02-22

WATER-LUBRICATED HIGH-PRESSURE PUMP USING ROLLING SUPPORT

#13
20230417237
2023-12-28

LUBRICANT PUMP SYSTEM WITH RAPID COUPLING RESERVOIR

#14
20230407855
2023-12-21

FLUID DOSING SYSTEM

#15
20230313792
2023-10-05

PLUNGER PUMP AND PUMP STATION

#16
20230271205
2023-08-31

Portable airless sprayer

#17
20230271204
2023-08-31

Portable airless sprayer

#18
20230219107
2023-07-13

Portable airless sprayer

#19
20230151804
2023-05-18

Pump head of diaphragm booster pump, diaphragm booster pump, water treatment device and method of operating pump head

#20
20230134911
2023-05-04

Pump unit for miniature cleaning machine

#21
20230039274
2023-02-09

HYDRAULIC PUMP

#22
20230018875
2023-01-19

Supply pump

#23
20230015141
2023-01-19

Positive displacement pump controller and method of operation

#24
20220372963
2022-11-24

Piston compressor and method for operating same

#25
20220372962
2022-11-24

Packing seal for a piston compressor and method for operating same

#26
20220266280
2022-08-25

Portable airless sprayer

#27
20220266279
2022-08-25

Portable airless sprayer

#28
20220235750
2022-07-28

PISTON TYPE PUMP DRIVE ARRANGEMENT

#29
20220205439
2022-06-30

Fluid dosing system

#30
20210404458
2021-12-30

Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine

#31
20210170453
2021-06-10

SELF-CONTAINED PRESSURE WASHER

#32
20210162439
2021-06-03

Portable airless sprayer

#33
20210138511
2021-05-13

Pump assembly and high-pressure cleaning apparatus

#34
20200408200
2020-12-31

Positive displacement pump controller and method of operation

#35
20200400132
2020-12-24

Reciprocating pump

#36
20200362678
2020-11-19

Mud pump

#37
20200309103
2020-10-01

Double acting two stage integrated pump

#38
20200271109
2020-08-27

PISTON DRIVE DEVICE

#39
20200224820
2020-07-16

Assembly unit as a structural component for a lubricant pump

#40
20200182237
2020-06-11

Pump for a selective catalytic reduction (SCR) system in vehicles comprising at least one pump element comprising a pump piston, a spring bellow, and an actuation tappet under force of a compression spring surrounding the spring bellow

#41
20200166025
2020-05-28

Pump and a desalination system including the pump

#42
20200135323
2020-04-30

Infusion system consumables and related calibration methods

#43
20200106326
2020-04-02

Drive device, hydraulic pump, motor vehicle

#44
20200072327
2020-03-05

Power delivery devices for reciprocating engines and related systems and methods

#45
20190360599
2019-11-28

Liner for frac pump suction manifold

#46
20190360560
2019-11-28

Power delivery devices for reciprocating engines, pumps, and compressors, and related systems and methods

#47
20190345921
2019-11-14

Pressure pump connecting rod monitoring

#48
20190277275
2019-09-12

Electro-hydraulic swashplate control arrangement for an axial piston pump

#49
20190271305
2019-09-05

Multiple-pump valve monitoring system

#50
20190234454
2019-08-01

Pump Apparatus and Brake Apparatus

#51
20190203639
2019-07-04

Driving apparatus with swinging linear motion mechanism

#52
20190184073
2019-06-20

Diaphragm vacuum pump

#53
20190136840
2019-05-09

Reciprocating pump

#54
20190088458
2019-03-21

Automatic calibration device and ion migration spectrometer

#55
20190077389
2019-03-14

Hydraulic unit of a vehicle brake system having an eccentric chamber

#56
20190055937
2019-02-21

Accurate flow-in measurement by triplex pump and continuous verification

#57
20190048862
2019-02-14

Piston pump for brake system

#58
20190047339
2019-02-14

Tire inflation system

#59
20190011051
2019-01-10

Valve body for frac pump

#60
20180355449
2018-12-13

High toughness martensitic stainless steel and reciprocating pump manufactured therewith

#61
20180335024
2018-11-22

Hydraulic pump

#62
20180313351
2018-11-01

Reciprocating pump with improved cross-bore

#63
20180306170
2018-10-25

MEMBRANE FLUID PUMP

#64
20180266406
2018-09-20

Double-piston compressor of a compressed-air supply device

#65
20180230979
2018-08-16

Reciprocating pump and transmission assembly having a one-way clutch

#66
20180223644
2018-08-09

Bulk modulus monitoring system

#67
20180214897
2018-08-02

Portable airless sprayer

#68
20180202433
2018-07-19

Pressure pump valve monitoring system

#69
20180195532
2018-07-12

Hydraulic actuator and torque transmission coupler

#70
20180187664
2018-07-05

Medical air compressor

#71
20180163719
2018-06-14

Reciprocating pump

#72
20180112653
2018-04-26

Pump and a desalination system including the pump

#73
20180106244
2018-04-19

Electric pump

#74
20180087720
2018-03-29

Drive system for chemical injection pumps and instrument air compressors

#75
20180087503
2018-03-29

Pump system

#76
20180087492
2018-03-29

Lubrication pump

#77
20180071761
2018-03-15

Piston engaging with valve for self-priming in fluid sprayers

#78
20180050585
2018-02-22

Cooling apparatus for vehicle

#79
20180045187
2018-02-15

Drive mechanism module for a reciprocating pump

#80
20180030967
2018-02-01

Aligning reciprocating motion in fluid delivery systems

#81
20180023556
2018-01-25

Micro water pump capable of controlling flow precisely

#82
20180017045
2018-01-18

Process pump having a crank drive

#83
20180010597
2018-01-11

PUMP FOR DISPENSING A LIQUID

#84
20180010591
2018-01-11

FLUID ENERGY MACHINE, METHOD FOR GENERATING A FLUID VOLUME FLOW AND/OR FOR COMPRESSING A FLUID AND METHOD FOR REFUELLING A VEHICLE

#85
20180010590
2018-01-11

Load-balanced mud pump assembly

#86
20170335832
2017-11-23

Pump System for Inline Conditioning

#87
20170306935
2017-10-26

Reciprocating pump

#88
20170292515
2017-10-12

Precipitation hardened martensitic stainless steel and reciprocating pump manufactured therewith

#89
20170276123
2017-09-28

DISPLACING DEVICE

#90
20170227046
2017-08-10

Bearing arrangement for a reciprocating compressor

#91
20170204852
2017-07-20

Segmented fluid end

#92
20170198686
2017-07-13

Rotary pump

#93
20170184091
2017-06-29

Rotational metering pump for insulin patch

#94
20170165692
2017-06-15

Portable airless sprayer

#95
20170130731
2017-05-11

Drip tight pump

#96
20170082183
2017-03-23

Mechanism and system for rotating an elongate member of an oil pump

#97
20170082101
2017-03-23

Apparatus and methods for identifying defective pumps

#98
20170067546
2017-03-09

Power delivery devices for reciprocating engines and related systems and methods

#99
20170067455
2017-03-09

LINEAR ACTUATOR

#100
20170051732
2017-02-23

Pump system and method of starting pump

#101
20170037846
2017-02-09

Pumping control unit and method of computing a time-varying downhole parameter

#102
20170015159
2017-01-19

Tire inflation system

#103
20170009720
2017-01-12

High pressure fuel pump and associated drive device

#104
20160369792
2016-12-22

Connecting rod and crosshead assembly for enhancing the performance of a reciprocating pump

#105
20160363198
2016-12-15

Power delivery devices for reciprocating engines and related systems and methods

#106
20160305421
2016-10-20

Reciprocating plunger pump and its engine body, the slider crank mechanism and the slide block, the bearing seat, the crankcase upper cover and the plunger seat

#107
20160298621
2016-10-13

Pump for a selective catalytic reduction (SCR) system in vehicles comprising at least one pump element comprising a pump piston, a spring bellow, and an actuation tappet under force of a compression spring surrounding the spring bellow

#108
20160290325
2016-10-06

Fluid pump

#109
20160201661
2016-07-14

Sealed compressor and freezer device or refrigerator equipped with same

#110
20160186743
2016-06-30

Pump rod and driving link with side-load reducing configuration

#111
20160177930
2016-06-23

Self-calibrating return spring pump, in particular self-calibrating return spring dosing pump

#112
20160168995
2016-06-16

Variable displacement system

#113
20160138576
2016-05-19

Mechanism and system for rotating an elongate member of an oil pump

#114
20160102662
2016-04-14

Pump assembly

#115
20160084240
2016-03-24

Integrated Pump Pressure Washer

#116
20150267743
2015-09-24

Bearing arrangements in a refrigeration reciprocating compressor

#117
20150098837
2015-04-09

Hydraulically actuated diaphragm pumps

#118
20150044072
2015-02-12

Compressor unit, and compressor

#119
20150030476
2015-01-29

Pump unit driven by an electric motor

#120
20140294636
2014-10-02

Reciprocating compressor

#121
20140216417
2014-08-07

Fuel pump

#122
20140169985
2014-06-19

Diaphragm pump for dosing a fluid and an according method

#123
20130323030
2013-12-05

Bearing arrangement for a reciprocating compressor

#124
20130294946
2013-11-07

PUMP FOR USE IN STEAM CLEANING DEVICES

#125
20130205940
2013-08-15

Eccentric bearing

#126
20130199320
2013-08-08

Eccentric bearing

#127
20130195700
2013-08-01

PRESSURIZING PUMP STRUCTURE

#128
20130195390
2013-08-01

Eccentric bearing

#129
20130061744
2013-03-14

Offset cam for piston pump

#130
20130047836
2013-02-28

Multi-speed hydraulic pump

#131
20130039789
2013-02-14

VACUUM, PRESSURE OR LIQUID PUMP

#132
20120315176
2012-12-13

Rotary cylinder device

#133
20120315166
2012-12-13

Diaphragm pump with inlet pathways passing through mounting holes

#134
20120263613
2012-10-18

Discharge valve and damper for a piston pump

#135
20120234277
2012-09-20

Roller tappet

#136
20120210866
2012-08-23

Reciprocating piston mechanism with extended piston offset

#137
20120177524
2012-07-12

Rotary cylinder device

#138
20120137667
2012-06-07

Regenerative hydraulic pump

#139
20120039553
2012-02-16

Crankshaft bearing assembly

#140
20110277464
2011-11-17

Motor-pump assembly

#141
20110271670
2011-11-10

Motor-pump assembly

#142
20110220065
2011-09-15

Common Rail High Pressure Pump

#143
20110198413
2011-08-18

Portable airless sprayer

#144
20100294614
2010-11-25

Hydraulic assembly for a force-operated setting unit

#145
20100229812
2010-09-16

Tappet

#146
20100196181
2010-08-05

Pump Device

#147
20100172778
2010-07-08

Connecting rod without wrist pin

#148
20100158726
2010-06-24

Plunger Pump

#149
20100150747
2010-06-17

Pump having pulsation-reducing engagement surface

#150
20100111712
2010-05-06

Hydraulic pump control arm and method

#151
20090047146
2009-02-19

Eccentric Radial Piston Pump and Eccentric Radial Piston Motor

#152
20070264139
2007-11-15

Air compressor having stabilized structure

#153
20070177989
2007-08-02

Valve assembly for pressure washer pump

#154
20070116579
2007-05-24

Positive-displacement reciprocating compressor

#155
20060245940
2006-11-02

Eccentric drive mechanism for volumetric pumps or motors

#156
20060083634
2006-04-20

Pressure washer having oilless high pressure pump

#157
20050201880
2005-09-15

Positive-displacement reciprocating compressor

#158
20050079065
2005-04-14

Radial piston pump