Patents-Review.com
ClassID:

143515 ⎘

F04C14/24 - CPC Classification

Classification description:

Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves

Sub-classes:
Recent Application in this class:
#1
20260117769
2026-04-30

ROTATING SCREW MACHINE WITH DISCHARGE PLATE

 #2
20260016006
2026-01-15

SCREW COMPRESSOR AND REFRIGERATION APPARATUS

 #3
20250361793
2025-11-27

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

 #4
20250207582
2025-06-26

POSITIVE DISPLACEMENT PUMP WITH PRESSURE RELIEF

 #5
20250137455
2025-05-01

PUMP AND METHOD FOR ADJUSTING THE DELIVERY RATE OF A PUMP

 #6
20250101979
2025-03-27

Control Device for Hydraulic Control Valve

 #7
20250012274
2025-01-09

FUEL SUPPLY SYSTEM AND FUEL SUPPLY METHOD FOR AIRCRAFT GAS TURBINE ENGINE

 #8
20240392728
2024-11-28

DIRECT CONTROL VARIABLE DISPLACEMENT METERING PUMPS

 #9
20240352930
2024-10-24

POSITIVE DISPLACEMENT PUMP WITH PRESSURE RELIEF

 #10
20240262036
2024-08-08

PUMP FOR ADDITIVE MANUFACTURING

 #11
20240125323
2024-04-18

Pump configuration including a purge valve for removing airlocks

 #12
20240035469
2024-02-01

Apparatus and Method for Regulating a Delivery Volume of a Displacement Pump

 #13
20230417126
2023-12-28

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

 #14
20230366397
2023-11-16

SYSTEMS AND METHODS FOR OPERATION MODES FOR AN AIR COMPRESSOR

 #15
20230296184
2023-09-21

Relief valve and pump cover

 #16
20230119471
2023-04-20

Positive displacement pump with pressure relief

 #17
20230080102
2023-03-16

Pump system

 #18
20230059905
2023-02-23

Pump configuration including a purge valve for removing airlocks

 #19
20220316473
2022-10-06

VARIABLE DISPLACEMENT PUMP

 #20
20220243729
2022-08-04

LIQUID PUMP AND METHOD FOR ASSEMBLING A LIQUID PUMP

 #21
20220235801
2022-07-28

Control valve with optimized cross-section

 #22
20220049699
2022-02-17

Demand fuel systems for turbomachines

 #23
20220049697
2022-02-17

Controllable Screw Spindle Pump

 #24
20210332817
2021-10-28

POSITIVE DISPLACEMENT PUMP WITH PRESSURE RELIEF

 #25
20210277893
2021-09-09

System to pump fluid and control thereof

 #26
20210270267
2021-09-02

Pump unit for a drive train of a motor vehicle

 #27
20210239137
2021-08-05

System to pump fluid and control thereof

 #28
20210207600
2021-07-08

Valve assembly for an electrical refrigerant compressor

 #29
20210198979
2021-07-01

Flow-through pulsing assembly for use in downhole operations

 #30
20210148259
2021-05-20

Controllable lubricating oil delivery system for internal combustion engines

 #31
20210033091
2021-02-04

OIL PUMP

 #32
20200369490
2020-11-26

Reel braking system

 #33
20200355183
2020-11-12

Pump assembly for a vehicle, and control system for a pump assembly and method

 #34
20200340473
2020-10-29

Vane pump

 #35
20200291943
2020-09-17

Climate-control system having valve assembly

 #36
20200256336
2020-08-13

Valveless hydraulic system

 #37
20200248686
2020-08-06

Pressure relief valve integrated in pivot pin of pump

 #38
20200232326
2020-07-23

Gear pump or motor with features for determining if assembled correctly

 #39
20200173551
2020-06-04

Hydrostatic transmission assembly and system

 #40
20200158106
2020-05-21

Equal-walled gerotor pump for wellbore applications

 #41
20200141403
2020-05-07

Variable displacement pump and control method therefor

 #42
20200003210
2020-01-02

OIL PUMP

 #43
20200003209
2020-01-02

OIL PUMP

 #44
20190390669
2019-12-26

Equal-walled gerotor pump for wellbore applications

 #45
20190376509
2019-12-12

Variable displacement pump

 #46
20190338775
2019-11-07

Motor-operated compressor

 #47
20190301457
2019-10-03

Fixation detecting apparatus to prevent audible sound from emanating from oil pump during oil pump operation state determination

 #48
20190293069
2019-09-26

Automotive variable mechanical lubricant pump

 #49
20190242378
2019-08-08

Vane oil pump with a relief passage covered by an inner rotor to prevent flow to a discharge port and a rotor passage providing flow to said port

 #50
20190195223
2019-06-27

Pump apparatus having axially moving shaft bearing disposed adjacent a pressure relief passage to facilitate a pressure relief function of same

 #51
20190195222
2019-06-27

Rotary drive with pivoting stator and rotor vanes

 #52
20190154036
2019-05-23

Pump unit with integrated piston pump and electric motor

 #53
20190153820
2019-05-23

Flow-through pulsing assembly for use in downhole operations

 #54
20190120227
2019-04-25

Two-stage variable-displacement oil pump

 #55
20190101207
2019-04-04

Air vent structure of oil pump for automatic transmission, and method for assembling air vent structure

 #56
20190039276
2019-02-07

Apparatus and method for injecting a fluid formulation into a melted polymeric material

 #57
20190017596
2019-01-17

Hydraulic control apparatus and hydraulic control method

 #58
20190011046
2019-01-10

HYDRAULIC CIRCUIT TO ENABLE UNIDIRECTIONAL FLOW UNDER FORWARD AND REVERSE POSITIVE DISPLACEMENT PUMP ROTATION

 #59
20190010964
2019-01-10

System to pump fluid and control thereof

 #60
20180363647
2018-12-20

Demand fuel systems for turbomachines

 #61
20180347565
2018-12-06

Rotary compressor with a valve in the vane

 #62
20180335122
2018-11-22

Hydraulic limited differential slip

 #63
20180333658
2018-11-22

Mud pump and vacuum gas extraction system

 #64
20180291895
2018-10-11

System to pump fluid and control thereof

 #65
20180266417
2018-09-20

A MOTOR PUMP AND CONTROL MANIFOLD ASSEMBLY

 #66
20180258930
2018-09-13

Variable displacement-type oil pump

 #67
20180245585
2018-08-30

Positive displacement pump with pressure relief

 #68
20180238403
2018-08-23

Driving power transmission device

 #69
20180223840
2018-08-09

Variable capacity oil pump

 #70
20180166060
2018-06-14

Active cancellation of a pulsating flow with a source noise reference

 #71
20180149050
2018-05-31

Thermo valve and oil pump

 #72
20180135626
2018-05-17

POSITIVE DISPLACEMENT PUMP ASSEMBLY FOR POWERTRAIN SYSTEMS AND HYDRAULIC CONTROL SYSTEM INCORPORATING THE SAME

 #73
20180135625
2018-05-17

VARIABLE CAPACITY OIL PUMP

 #74
20180118378
2018-05-03

Anti-stall hydraulic pump for a thrust vector control system

 #75
20180106253
2018-04-19

Triple gear pump and fluid supplying device

 #76
20180100504
2018-04-12

GEAR PUMP BEARING

 #77
20180051695
2018-02-22

Pump for an engine

 #78
20180023563
2018-01-25

AUTOMATIC TRANSMISSION PUMP APPARATUS OR PUMP APPARATUS

 #79
20180010598
2018-01-11

Hydraulic pump and respective multifunction valve

 #80
20180003176
2018-01-04

Vane cell pump with a sub-vane region to which pressure can be applied

 #81
20170350390
2017-12-07

Micro-Sized Fluid Metering Pump

 #82
20170342978
2017-11-30

Capacity-modulated scroll compressor

 #83
20170321696
2017-11-09

VARIABLE DISPLACEMENT VANE PUMP

 #84
20170314674
2017-11-02

Hydrostatic transmission assembly and system

 #85
20170314555
2017-11-02

VARIABLE CAPACITY VANE PUMP

 #86
20170298966
2017-10-19

Magnetically controlled valve and pump devices and methods of using the same

 #87
20170259192
2017-09-14

Mud pump and vacuum gas extraction system

 #88
20170217439
2017-08-03

Control device and control method for driving device

 #89
20170198692
2017-07-13

Variable displacement vane pump

 #90
20170184110
2017-06-29

Fluid conditioning module

 #91
20170184096
2017-06-29

Variable pressure pump with hydraulic passage

 #92
20170175731
2017-06-22

System and method for controlling a fluid transport system

 #93
20170159439
2017-06-08

Eccentrically piloted hydraulic commutator

 #94
20170122314
2017-05-04

Vane pump device and hydraulic apparatus

 #95
20170074263
2017-03-16

VEHICLE HYDRAULIC DEVICE

 #96
20170074262
2017-03-16

VEHICLE HYDRAULIC DEVICE

 #97
20170059032
2017-03-02

HYDRAULIC PRESSURE SUPPLY SYSTEM OF AUTOMATIC TRANSMISSION

 #98
20170058893
2017-03-02

Variable displacement pump

 #99
20170045048
2017-02-16

Multi-stage pump assembly having a pressure controlled valve for controlling recirculation of fluid from the pump stage outlet to the pump stage inlet

 #100
20170037808
2017-02-09

Pressure control by phase current and initial adjustment at car line

 #101
20170030352
2017-02-02

ECCENTRIC MOVABLE VANE PUMP

 #102
20170030351
2017-02-02

Variable vane displacement pump utilizing a control valve and a switching valve

 #103
20170021523
2017-01-26

Oil delivery system for the lubrication of a chainsaw

 #104
20160376982
2016-12-29

Highly Efficient Two-Stroke Internal Combustion Hydraulic Engine with a Torquing Vane Device Incorporated

 #105
20160363120
2016-12-15

Pump comprising an adjusting device and a control valve for adjusting the delivery volume of the pump

 #106
20160348673
2016-12-01

Oil pump device

 #107
20160327047
2016-11-10

SELFPRIMING SYSTEM HAVING VALVE FOR A CENTRIFUGAL PUMP

 #108
20160290335
2016-10-06

VARIABLE DISPLACEMENT LUBRICANT PUMP

 #109
20160273535
2016-09-22

Equal-walled gerotor pump for wellbore applications

 #110
20160273534
2016-09-22

Equal-walled gerotor pump for wellbore applications

 #111
20160252083
2016-09-01

Turbomachine which can be operated both as hydraulic motor and as pump

 #112
20160186752
2016-06-30

Variable displacement vane pump with integrated fail safe function

 #113
20160178052
2016-06-23

MINIMAL LINE PRESSURE DISTURBANCE PUMP SWITCHING VALVE

 #114
20160123323
2016-05-05

Fluid pump having a return passage parallel to a suction passage

 #115
20160116059
2016-04-28

Variable displacement pump and gearbox control system

 #116
20160115832
2016-04-28

Variable displacement lubricant pump

 #117
20160108906
2016-04-21

Arrangement and method for measuring a delivery volume and a delivery rate of an intermittently operating pump

 #118
20160090983
2016-03-31

Oil pump structure

 #119
20160084274
2016-03-24

System to pump fluid and control thereof

 #120
20160047280
2016-02-18

Lubricant vane pump

 #121
20160025091
2016-01-28

Pump system

 #122
20150354565
2015-12-10

Variable displacement lubricant pump for an internal combustion engine with a temperature control valve

 #123
20150337705
2015-11-26

Hydraulic circuit system for forced regeneration of diesel particulate filter

 #124
20150330386
2015-11-19

Capacity-modulated scroll compressor

 #125
20150285247
2015-10-08

Radial valves and pumps including radial valves

 #126
20150226215
2015-08-13

Variable displacement vane pump and power steering system

 #127
20150224524
2015-08-13

Multiple station HVLP spray coating system

 #128
20150211515
2015-07-30

Micro-Sized Fluid Metering Pump

 #129
20150167667
2015-06-18

OIL PUMP DEVICE

 #130
20150139840
2015-05-21

VALVE DEVICE FOR A HYDRAULIC CIRCUIT, AND OIL PUMP CONTROL ASSEMBLY

 #131
20150139826
2015-05-21

Adjusting opening times of a cam actuated valve, reciprocating compressor and method

 #132
20150132170
2015-05-14

PUMP UNIT

 #133
20150114790
2015-04-30

Pump apparatus with switching valve and driving power transmission device

 #134
20150037194
2015-02-05

Oil pump

 #135
20150037193
2015-02-05

Oil return passage structure for oil pump

 #136
20140377115
2014-12-25

Internal Gear Pump

 #137
20140348669
2014-11-27

Pump Device for Ice Cream or Yogurt Machine

 #138
20140341757
2014-11-20

Oil pump for vehicle and vehicle with the same

 #139
20140301882
2014-10-09

Selectable flow hydraulic gear pump

 #140
20140271297
2014-09-18

Net-displacement control of fluid

 #141
20140270608
2014-09-18

Method for momentary hydrostatic operation of hydrodynamic thrust bearings in a vertical fluid displacement module

 #142
20140219852
2014-08-07

Gerotor hydraulic device with adjustable output

 #143
20140182714
2014-07-03

DUAL RELIEF VALVE OF BSM FOR VEHICLE ENGINE

 #144
20140105758
2014-04-17

Pressure control by phase current and initial adjustment at car line

 #145
20130276889
2013-10-24

Methods for restricting backflow of solids in a pump assembly

 #146
20130240083
2013-09-19

System and method having control for solids pump

 #147
20130224045
2013-08-29

Valve arrangement, connection plate for a hydrostatic piston machine, and hydrostatic piston machine

 #148
20130089437
2013-04-11

MICRO-SIZED FLUID METERING PUMP

 #149
20130071275
2013-03-21

Variable displacement lubricant pump

 #150
20130068328
2013-03-21

Gerotor Pump Assembly and Engine Fluid Delivery System Using a Gerotor Pump Assembly

 #151
20130058820
2013-03-07

Net-displacement control of fluid device

 #152
20130039790
2013-02-14

Variable displacement lubricant pump

 #153
20130022458
2013-01-24

Screw pump having an integrated pressure limiting valve

 #154
20120301342
2012-11-29

Variable displacement vane pump having multiple dampening springs

 #155
20120285562
2012-11-15

CONTROL MECHANISM FOR A PRESSURIZED SYSTEM

 #156
20120208667
2012-08-16

Speed changing control method and speed changing mechanism thereof

 #157
20120183426
2012-07-19

Variable-displacement lubricant pump

 #158
20120160327
2012-06-28

System and method for momentary hydrostatic operation of hydrodynamic thrust bearings in a vertical fluid displacement module

 #159
20120141315
2012-06-07

External Gear Pump

 #160
20120121450
2012-05-17

SCREW SPINDLE PUMP ARRANGEMENT

 #161
20110286862
2011-11-24

PUMP FOR A LUBRICATING SYSTEM OF A COMBUSTION ENGINE

 #162
20110150682
2011-06-23

Cam bearing flow control for rotating cam ring vane pump

 #163
20110088796
2011-04-21

Control valve body with integrated pump for automatic transmissions

 #164
20110085921
2011-04-14

Apparatus having control valve and variable capacitance pump and hydraulic pressure circuit of internal combustion engine in which the same apparatus is used

 #165
20100310386
2010-12-09

Hydraulic damping assembly and regulating system

 #166
20100126774
2010-05-27

Valve-controlled downhole motor

 #167
20100080721
2010-04-01

Rotary fluid device with multi-level phase shift control

 #168
20090301586
2009-12-10

Pump including an insertion valve sleeve having at least one orifice

 #169
20090293834
2009-12-03

Oil supplying apparatus for engine

 #170
20090123313
2009-05-14

Net-displacement control of fluid motors and pumps

 #171
20090088280
2009-04-02

VARIABLE DELIVERY GEAR PUMP

 #172
20090081052
2009-03-26

Variable displacement pump

 #173
20090016907
2009-01-15

DYNAMIC BALANCER WITH SPEED-RELATED CONTROL MECHANISM

 #174
20080277239
2008-11-13

Motor vehicle hydraulic pump

 #175
20080105231
2008-05-08

Oil supplying apparatus for engine

 #176
20070234996
2007-10-11

Adjusting device, in particular for a motor vehicle

 #177
20060275117
2006-12-07

Propeller pump system for handed propeller applications

 #178
20060171818
2006-08-03

Oil pump

 #179
20050196308
2005-09-08

Hydraulic power steering system for motor vehicles

 #180
20050098385
2005-05-12

Oil supply system for engine

 #181
17968998
2023-06-20

Hydraulic gear pump with radial pressure compensator

 #182
17201999
2022-06-21

High volume pump system

 #183
17034910
2022-11-08

Pump system

 #184
16951480
2022-11-22

Hydraulic gear pump with radial pressure compensator

 #185
14703518
2018-01-30

Hydraulic motor assembly