ClassID:

143130

F04B49/08 - CPC Classification

Classification description:

Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups  -  Regulating by delivery pressure

Recent Application in this class:
#1
20260092602
2026-04-02

Dynamic Pressure Monitoring And Adjustments Based On Pump Flow Characteristics

#2
20260078750
2026-03-19

PISTOL-GRIP STYLE ELECTRIC AIR PUMP TOOLS

#3
20260055784
2026-02-26

HYDRAULIC PUMP WITH ELECTRONIC ADJUSTABLE PRESSURE SETTING

#4
20260009382
2026-01-08

SYSTEM AND METHOD FOR SLEEP MODE FOR A PUMPING SYSTEM

#5
20250382955
2025-12-18

DIAPHRAGM PUMP DRIVE

#6
20250369457
2025-12-04

System and Method for Controlling a Hydraulic Supply System on a Mobile Machine

#7
20250296434
2025-09-25

LEAKAGE DIAGNOSIS METHOD AND LEAKAGE DIAGNOSIS SYSTEM FOR A TANK OF A VEHICLE

#8
20250249568
2025-08-07

HYDRAULIC PUMP

#9
20250237204
2025-07-24

Portable Air Compressor

#10
20250230808
2025-07-17

Portable Fluid Tank System with Multi-State Control Interface and Remote Operation

#11
20250223955
2025-07-10

BELLOWS PUMP DEVICE

#12
20250198403
2025-06-19

LIQUID FEEDING PUMP AND LIQUID FEEDING METHOD

#13
20250180028
2025-06-05

METHOD OF CONTROLLING A PUMP AND MOTOR

#14
20250180008
2025-06-05

VARIABLE TORQUE CONVERTER FOR BOREHOLE OPERATIONS

#15
20250154946
2025-05-15

VARIABLE TORQUE CONVERTER FOR BOREHOLE OPERATIONS

#16
20250152024
2025-05-15

BLOOD PRESSURE MEASUREMENT DEVICE WITH A MEMS PUMP AND CONTROL METHOD FOR THE SAME

#17
20250146495
2025-05-08

Flexible Pump Assembly for Use in a Fan Drive

#18
20250146480
2025-05-08

LOW-FLOW AND DOUBLE-OUTLET ELECTROMAGNETIC PLUNGER PUMP

#19
20250109744
2025-04-03

CENTRAL PLANT SYSTEM WITH AUTOMATED SYSTEM CURVES CALIBRATION FOR PUMPS

#20
20250084836
2025-03-13

HYDRAULIC CONTROL CIRCUIT FOR CONTROLLING FAN BLADE PITCH

#21
20250035104
2025-01-30

SYSTEMS AND METHODS FOR CONTROLLING VEHICLE AIR COMPRESSOR

#22
20250027515
2025-01-23

ELECTROHYDRAULIC CONTROL DEVICE AND ADJUSTABLE HYDRAULIC PUMP SYSTEM

#23
20250027491
2025-01-23

COMBINED HIGH PRESSURE RELIEF AND BYPASS VALVES

#24
20240426291
2024-12-26

METHOD FOR MONITORING A HYDRAULIC SYSTEM

#25
20240426287
2024-12-26

FLUID CONTROL SYSTEM

#26
20240418160
2024-12-19

Method for Controlling the Delivery Pressure of a Supply Pump

#27
20240410357
2024-12-12

METHOD FOR CONTROLLING A COMPRESSOR WHICH PROVIDES THE DRIVE OF A PNEUMATIC TOOL

#28
20240392791
2024-11-28

PRESSURE CONTROLLED PUMP SYSTEMS

#29
20240392775
2024-11-28

DIRECT CONTROLLED VARIABLE DISPLACEMENT PUMPS WITH THERMOSTATICALLY CONTROLLED BYPASS

#30
20240392774
2024-11-28

ACTIVE DISPLACEMENT CONTROL AGAINST TEMPERATURE TARGET

#31
20240376886
2024-11-14

ACTIVE PRESSURE COMPENSATOR FOR DEEP-SEA SAMPLING AND PRESSURE COMPENSATION METHOD THEREOF

#32
20240369025
2024-11-07

INTELLIGENT ENGINE AND PUMP CONTROLS

#33
20240339583
2024-10-10

Slurry transfer device and slurry transfer method using the same

#34
20240318646
2024-09-26

ELECTRONIC PRESSURE CONTROL OF DUAL PUMP SYSTEM

#35
20240279906
2024-08-22

Load-controlled hydraulic supply for a utility vehicle

#36
20240261953
2024-08-08

Hydraulic pump

#37
20240240630
2024-07-18

High turn down ratio direct control for variable displacement pumps

#38
20240229832
2024-07-11

HYDRAULIC PUMP WITH ELECTRONIC ADJUSTABLE PRESSURE SETTING

#39
20240218861
2024-07-04

NEUTRAL SETTING DEVICE OF AN ADJUSTABLE HYDRAULIC UNIT

#40
20240216941
2024-07-04

MATERIAL FEEDING DEVICE AND GLUE APPLYING SYSTEM

#41
20240209850
2024-06-27

A MEMBRANE-BASED PISTON PUMP AND A HOMOGENISING APPARATUS COMPRISING THE MEMBRANE-BASED PISTON PUMP

#42
20240200553
2024-06-20

VARIABLE DISPLACEMENT PUMP WITH BACK-UP

#43
20240134513
2024-04-25

PRESSURE CONTROL IN PAP SYSTEMS

#44
20240133282
2024-04-25

SYSTEMS AND METHODS TO OPERATE A DUAL-SHAFT GAS TURBINE ENGINE FOR HYDRAULIC FRACTURING

#45
20240110581
2024-04-04

Hydraulic system

#46
20240084791
2024-03-14

Air pump with automatic air pumping function

#47
20240068473
2024-02-29

METHODS AND SYSTEMS FOR AIR COMPRESSOR AND ENGINE DRIVEN CONTROL

#48
20240060486
2024-02-22

Providing backpressure for electric compressor

#49
20240060403
2024-02-22

Electric submersible pump

#50
20240044325
2024-02-08

BELLOWS PUMP DEVICE

#51
20240042130
2024-02-08

FLUID PUMP WITH ADAPTIVE FILTER

#52
20240028056
2024-01-25

GAS APPARATUS

#53
20240026875
2024-01-25

Control of a dual-pump single-power source system

#54
20230417235
2023-12-28

Intelligent controller for a reciprocating air compressor and methods of use thereof

#55
20230383741
2023-11-30

Method for determining a discharge pressure of a rolling piston compressor

#56
20230366397
2023-11-16

SYSTEMS AND METHODS FOR OPERATION MODES FOR AN AIR COMPRESSOR

#57
20230366392
2023-11-16

METHOD FOR OPERATING A PUMP SYSTEM

#58
20230358226
2023-11-09

PRESSURE PACKING FOR A RECIPROCATING PISTON COMPRESSOR WITH BUFFER GAS BARRIER

#59
20230332591
2023-10-19

AIR COMPRESSOR

#60
20230332586
2023-10-19

Liquid Feeding Pump and Liquid Feeding Method

#61
20230321616
2023-10-12

High-pressure fluid processing device configured for batch processing

#62
20230279879
2023-09-07

Electrohydraulic control device and adjustable hydraulic pump system

#63
20230265751
2023-08-24

Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing

#64
20230243350
2023-08-03

Controlling ramp up of a fluid pump

#65
20230235731
2023-07-27

FLUID DELIVERY SYSTEM AND METHOD

#66
20230235663
2023-07-27

Monitoring ramp-up pressure of a pump

#67
20230227015
2023-07-20

METHOD FOR DETERMINING VACUUM DEGREE THRESHOLD, AND MEDIUM, AND ELECTRONIC DEVICE

#68
20230151807
2023-05-18

METHOD FOR ACTUATING A HYDRAULIC DEVICE

#69
20230125840
2023-04-27

Variable displacement pumps

#70
20230121289
2023-04-20

Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing

#71
20230077509
2023-03-16

Pressure control in PAP systems

#72
20230068188
2023-03-02

Method of controlling a pump and motor

#73
20230045392
2023-02-09

Compressor system and method for operating a compressor system as a function of the compressed-air demand of an operating state of a vehicle

#74
20230041899
2023-02-09

Electrohydraulic proportional pressure control for open circuit pump

#75
20220403835
2022-12-22

FLUID CONTROL DEVICE

#76
20220381232
2022-12-01

Neutral setting device of an adjustable hydraulic unit

#77
20220347888
2022-11-03

System and method to auto-pressurize prior to dispense in a circulation dispense system

#78
20220307491
2022-09-29

Variable displacement pump with active bypass feedback control

#79
20220299022
2022-09-22

Vessel pressure testing system

#80
20220235801
2022-07-28

Control valve with optimized cross-section

#81
20220235758
2022-07-28

Hydraulic actuator control device for dump truck

#82
20220205444
2022-06-30

Pump system, fluid supply device and pressure detection method

#83
20220196004
2022-06-23

GAS HANDLING SYSTEM AND METHOD FOR EFFICIENTLY MANAGING CHANGES IN GASEOUS CONDITIONS

#84
20220196003
2022-06-23

GAS HANDLING SYSTEM AND METHOD FOR EFFICIENTLY MANAGING CHANGES IN GASEOUS CONDITIONS

#85
20220186597
2022-06-16

Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing

#86
20220178361
2022-06-09

Linear compressor

#87
20220154715
2022-05-19

Pump displacement control device having a feedback lever

#88
20220145868
2022-05-12

Hydraulic actuator with overpressure compensation

#89
20220120270
2022-04-21

Power-saving optimization operation method and switching point determining method for water pump unit

#90
20220106956
2022-04-07

Valve Unit, Capacity Control System and Axial Piston Machine with Such

#91
20220106949
2022-04-07

Cryopump and regeneration method of cryopump

#92
20220090594
2022-03-24

Hydraulic fracturing pump control system

#93
20220090557
2022-03-24

Method for managing a piston pump for a heat engine

#94
20220090544
2022-03-24

Intelligent engine and pump controls

#95
20220049693
2022-02-17

Method for Controlling a Compressor Installation

#96
20220049688
2022-02-17

Variable-pressure air pump

#97
20220042504
2022-02-10

HOME FLOOD PREVENTION APPLIANCE SYSTEM

#98
20220042500
2022-02-10

HIGH-VISCOSITY FLUID DOSE ISOLATORS

#99
20220010792
2022-01-13

Hydraulic system

#100
20220003230
2022-01-06

Microfluidic pump-based infusion anomaly state detection and control system

#101
20210404469
2021-12-30

Method for operating a vacuum pump system and vacuum pump system applying such method

#102
20210396234
2021-12-23

Motor drive system and method

#103
20210396123
2021-12-23

Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing

#104
20210396122
2021-12-23

Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing

#105
20210381503
2021-12-09

Hydraulic machine with controllable valves and method for idling such a hydraulic machine

#106
20210381501
2021-12-09

Hydraulic and control system for resin injection

#107
20210363999
2021-11-25

Pump and method for controlling a pump

#108
20210332600
2021-10-28

ADHESIVE APPLICATOR SYSTEM AND OPERATING METHOD

#109
20210332565
2021-10-28

Fluid pressure drive device

#110
20210324847
2021-10-21

Method and system of slow rate pumping

#111
20210317827
2021-10-14

Control arrangement for variable displacement pump

#112
20210310481
2021-10-07

Pneumatic surge suppressor

#113
20210310479
2021-10-07

Fluid machine

#114
20210293231
2021-09-23

Air compressor

#115
20210293111
2021-09-23

Reliability assessable systems for actuating hydraulically actuated devices and related methods

#116
20210291795
2021-09-23

INFLATOR WITH DYNAMIC PRESSURE COMPENSATION

#117
20210286384
2021-09-16

Estimator and vacuum valve

#118
20210285437
2021-09-16

Method and fluid pump for conveying a fluid in a fluid circuit of a motor vehicle

#119
20210283636
2021-09-16

Pressure cleaning device, method for operating a pressure cleaning device and method for detecting a hose attachment

#120
20210277760
2021-09-09

Enhancing subterranean formation stimulation and production using target downhole wave shapes

#121
20210275741
2021-09-09

Fluid pump with adaptive filter

#122
20210270258
2021-09-02

Electric motor pump system and method

#123
20210238970
2021-08-05

Well operation optimization

#124
20210222686
2021-07-22

Co-axial inverted piston linear actuator pumping system

#125
20210207594
2021-07-08

Method and apparatus for controlling a variable displacement pump

#126
20210206354
2021-07-08

Inflator with dynamic pressure compensation

#127
20210206353
2021-07-08

INFLATOR WITH DYNAMIC PRESSURE COMPENSATION

#128
20210190065
2021-06-24

FLUID PUMPING SYSTEMS INCORPORATING DIAPHRAGM PUMPS AND STRAIN MEASUREMENT DEVICES

#129
20210189693
2021-06-24

Hydraulic system

#130
20210180586
2021-06-17

System for Pumping a Compressible Liquid

#131
20210178346
2021-06-17

High-pressure fluid processing device configured for batch processing

#132
20210164465
2021-06-03

Method for monitoring the functioning of a compressor

#133
20210156383
2021-05-27

Gas compressor

#134
20210156373
2021-05-27

Calibration system for variable capacity hydraulic pump

#135
20210148363
2021-05-20

Methods and systems for air compressor and engine driven control

#136
20210143025
2021-05-13

Pressure regulating device and semiconductor production system

#137
20210131420
2021-05-06

Automatic double-acting valve and pump equipped with said valve

#138
20210115910
2021-04-22

Torque control system for a variable displacement pump

#139
20210115782
2021-04-22

Safety variable frequency drive for preventing over pressurization of a piping network

#140
20210108845
2021-04-15

Method and device for controlling capacity change of compressor, and smart home appliance

#141
20210108632
2021-04-15

Air pressure system

#142
20210107038
2021-04-15

Pressurized cleaning apparatus comprising a pressure generation unit

#143
20210102534
2021-04-08

CONNECTED PUMP SYSTEM CONTROLLER AND METHOD OF USE

#144
20210071673
2021-03-11

Drive protection and management method of a pressurization system

#145
20210071658
2021-03-11

Diaphragm pump

#146
20210062804
2021-03-04

System and method for controlling dual oil pump

#147
20210054845
2021-02-25

Multi-stage compressor and method of controlling the same

#148
20210054836
2021-02-25

Method for actuating a compressor system and a compressor system

#149
20210048016
2021-02-18

Industrial control system for distributed compressors

#150
20210041066
2021-02-11

Multi-vessel fluid storage and delivery system

#151
20210040945
2021-02-11

Synchronized plunger packing lubrication

#152
20210039121
2021-02-11

Remote priming of texture sprayer

#153
20210025380
2021-01-28

Gas compressor and method for controlling same

#154
20210025374
2021-01-28

Hydraulic Pressurizing Medium Supply Assembly, and Method

#155
20210025373
2021-01-28

Electrohydraulic proportional pressure control for open circuit pump

#156
20210017988
2021-01-21

Gas compressor

#157
20200408205
2020-12-31

INFLATION DEVICE FEATURING AUTOMATIC PRESSURE DETECTING, AIR CHARGING, AND PRESSURE RELEASING

#158
20200400356
2020-12-24

Cryocooler

#159
20200391560
2020-12-17

System and method for tire repair

#160
20200386721
2020-12-10

Quick liquid exchange in liquid chromatography

#161
20200373866
2020-11-26

Linear motor system and compressor

#162
20200362849
2020-11-19

Liquid metering device for metering pumps

#163
20200350790
2020-11-05

Modular, mobile power system for equipment operations, and methods for operating same

#164
20200340623
2020-10-29

Compressed air production facility, compressed air pressure setpoint adjusting method, and compressed air pressure setpoint adjusting program

#165
20200340472
2020-10-29

Electronic apparatus and method for optimizing the use of motor-driven equipment in a control loop system

#166
20200340360
2020-10-29

Hydraulic rotating machine

#167
20200309116
2020-10-01

Method for operating a piston compressor, and piston compressor

#168
20200300236
2020-09-24

Jet pump for noncontact tonometry and associated devices, systems, and methods

#169
20200284251
2020-09-10

Pressure safety shutoff

#170
20200284244
2020-09-10

Systems and methods for purging an exhaust reductant delivery system

#171
20200263682
2020-08-20

Tube pump system and method for controlling the tube pump system

#172
20200263681
2020-08-20

Air compressor system control

#173
20200256332
2020-08-13

Variable pre and de-compression control mechanism and method for hydraulic displacement pump

#174
20200256326
2020-08-13

Hydraulic pump control system

#175
20200248719
2020-08-06

Hydraulic drive apparatus

#176
20200209092
2020-07-02

Sump Pump Tracking Device

#177
20200199960
2020-06-25

RELIABILITY ASSESSABLE SYSTEMS FOR ACTUATING HYDRAULICALLY ACTUATED DEVICES AND RELATED METHODS

#178
20200191138
2020-06-18

Hydrostatic system providing volumetric efficiency when pump is neutral

#179
20200182234
2020-06-11

BELLOWS PUMP DEVICE

#180
20200158104
2020-05-21

Method for operating a pressure control system comprising a multi-stage compressor, and pressure control system

#181
20200132066
2020-04-30

Fluid delivery system and method

#182
20200124042
2020-04-23

Method for operating a pressure control system comprising a multi-stage compressor, and pressure control system

#183
20200124041
2020-04-23

Minimum pressure valve and compressor comprising such a minimum pressure valve

#184
20200109706
2020-04-09

Estimation device and valve control device

#185
20200088189
2020-03-19

Method of controlling a pump and motor

#186
20200088187
2020-03-19

Linear hydraulic pump and its application in well pressure control

#187
20200080550
2020-03-12

Method and system of slow rate pumping

#188
20200072205
2020-03-05

Hydrostatic positive displacement machine

#189
20200056580
2020-02-20

Manual displacement control arrangement for an axial piston pump

#190
20200025193
2020-01-23

Method for operating a hydraulic consumer on an electrically actuated control valve

#191
20200025185
2020-01-23

Hydraulic system and method for controlling the speed and pressure of a hydraulic cylinder

#192
20200003205
2020-01-02

FRACTURING PUMP SYSTEMS HAVING A HYDRAULICALLY-DRIVEN ASSEMBLY APPLYING VARIABLE AMOUNTS OF PRESSURE ON PACKING

#193
20200001446
2020-01-02

Hydraulic piston pump for a hydraulic tool

#194
20190390668
2019-12-26

Two-stage high-pressure pump with high sealing performance

#195
20190383282
2019-12-19

Displacement pump for medical liquids, blood treatment device, and method for controlling same

#196
20190377372
2019-12-12

Pressurization system for high pressure processing system

#197
20190353156
2019-11-21

Home flood prevention appliance system

#198
20190350404
2019-11-21

MEMBRANE PUMP FOR BEVERAGE PREPARATION MODULE

#199
20190331109
2019-10-31

Electrofluidic Assembly and Method for its Operation

#200
20190323489
2019-10-24

Axial piston machine with pressure relief in the through drive space

#201
20190315456
2019-10-17

Hydraulic system for an aircraft

#202
20190263363
2019-08-29

Inflator with dynamic pressure compensation

#203
20190257298
2019-08-22

System comprising two or more pumps connected in parallel and a pressure switch conceived to operate in said system

#204
20190234777
2019-08-01

Pumpjack production well including fluid sensor having 2-dimensional venturi and capacitive flow sensor

#205
20190232230
2019-08-01

Degassing apparatus

#206
20190184615
2019-06-20

Conveying device for conveying a viscous material from a container, and method for operating the conveying device

#207
20190178241
2019-06-13

Reciprocating pump

#208
20190170136
2019-06-06

Air flow control device

#209
20190170130
2019-06-06

Linear motor system and compressor

#210
20190154532
2019-05-23

Reciprocating pump

#211
20190145412
2019-05-16

Methods and systems for air compressor and engine driven control

#212
20190145390
2019-05-16

Hydraulic pump with speed and pressure compensation

#213
20190145389
2019-05-16

Adjusting device for an axial piston machine

#214
20190145365
2019-05-16

Fuel pump

#215
20190145257
2019-05-16

Hydraulic and control system for resin injection

#216
20190143010
2019-05-16

Methods and systems of fluid management in surgical procedures

#217
20190136851
2019-05-09

PUMP DEVICE

#218
20190112789
2019-04-18

Hydraulic system for working machine

#219
20190111224
2019-04-18

Pressure controller

#220
20190101136
2019-04-04

Hydraulic arrangement

#221
20190063420
2019-02-28

Electronically controlled diaphragm pump

#222
20190055945
2019-02-21

Method for operating a vacuum pump system and vacuum pump system applying such method

#223
20190048865
2019-02-14

Piston compressor with enlarged regulating region

#224
20190047339
2019-02-14

Tire inflation system

#225
20190039589
2019-02-07

AIR SUPPLY SYSTEM

#226
20190032681
2019-01-31

Hydraulic apparatus, in particular hydraulic valve or hydraulic regulator

#227
20190010965
2019-01-10

Hydraulic apparatus comprising synthetically commutated machine, and operating method

#228
20190004499
2019-01-03

Model formation module for creating a model for controlling a pressure regulating system of a water supply network

#229
20190003467
2019-01-03

Subassembly for a compressor

#230
20180372086
2018-12-27

Pneumatic system operation control device and control method

#231
20180363640
2018-12-20

Automated operation of wellsite pumping equipment

#232
20180355986
2018-12-13

Control valve

#233
20180355862
2018-12-13

Predicting mud pump expendable life based on PSI-miles

#234
20180347558
2018-12-06

Intake pressure control system

#235
20180347416
2018-12-06

Control device for electric motor and hydraulic pressure supply system

#236
20180335024
2018-11-22

Hydraulic pump

#237
20180328355
2018-11-15

Intake Pressure Control System

#238
20180313496
2018-11-01

Multi-vessel fluid storage and delivery system

#239
20180292679
2018-10-11

Glasses with wearing cushion device

#240
20180291887
2018-10-11

Eyeglass buffer protection device

#241
20180274533
2018-09-27

Fluid flow control and delivery via multiple fluid pumps

#242
20180258613
2018-09-13

Hybrid work machine

#243
20180245609
2018-08-30

Measurement and use of hydraulic stiffness properties of hydraulic apparatus

#244
20180238028
2018-08-23

Work machine

#245
20180230978
2018-08-16

Electrohydraulic proportional pressure control for open circuit pump

#246
20180223992
2018-08-09

Control mechanism for stepless transmission

#247
20180223832
2018-08-09

Air compressing apparatus and control method

#248
20180209426
2018-07-26

Sump pump remote monitoring systems and methods

#249
20180202427
2018-07-19

Method and control device for operating a reciprocating piston pump

#250
20180187662
2018-07-05

Frac manifold and systems

#251
20180171997
2018-06-21

Pump Assisted Chemical Feeder

#252
20180163713
2018-06-14

SYSTEMS, APPARATUSES, AND METHODS FOR CELL SORTING AND FLOW CYTOMETRY

#253
20180156211
2018-06-07

Connected pump system controller and method of use

#254
20180135605
2018-05-17

Method for operating an axial piston machine of swashplate design

#255
20180128266
2018-05-10

Continuous sample delivery peristaltic pump

#256
20180128265
2018-05-10

Method of bypassing a float switch controlling a water pump

#257
20180110906
2018-04-26

Breast pump or other medical devices with dynamically adaptive pump configuration providing error detection and distinctive suction profile

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