ClassID:

143927

F04C2270/86 - CPC Classification

Classification description:

Control; Monitoring or safety arrangements Detection

Recent Application in this class:
#1
20260132789
2026-05-14

SCROLL PUMP AND SCROLL PUMP INLET VALVE

#2
20250270996
2025-08-28

ROTARY VANE PUMP VANE WEAR DETECTION

#3
20240218878
2024-07-04

CONTROL METHOD FOR COMPRESSOR AND COMPRESSOR SYSTEM

#4
20230417235
2023-12-28

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

#5
20230349378
2023-11-02

Fault rectification method for a progressive cavity pump of a conveyor device for conveying viscous building materials

#6
20230332601
2023-10-19

Control of operating liquid flow into a liquid ring pump

#7
20220356877
2022-11-10

Eccentric-screw pump with concentricity sensor

#8
20220268271
2022-08-25

SYSTEMS AND METHODS FOR CONTROL OF A PUMP MOTOR HAVING PHYSICALLY SEPARATED CONTROL BOARDS

#9
20220017357
2022-01-20

Liquid discharge system including liquid product pump having vibration sensor

#10
20210180592
2021-06-17

Smart drilling motor stator

#11
20210170299
2021-06-10

Pressurized vapor cycle liquid distillation

#12
20210140431
2021-05-13

Load identification method for reciprocating machinery based on information entropy and envelope features of axis trajectory of piston rod

#13
20200360832
2020-11-19

Pressurized vapor cycle liquid distillation

#14
20200313505
2020-10-01

ELECTRIC OIL PUMP

#15
20200224948
2020-07-16

Compressor fault diagnostic apparatus and system

#16
20200208636
2020-07-02

Methods and systems to detect an operation condition of a compressor

#17
20200088623
2020-03-19

System and method for providing stable fluid flow

#18
20190381420
2019-12-19

Pressurized vapor cycle liquid distillation

#19
20190219316
2019-07-18

Scroll unloading detection system

#20
20190011045
2019-01-10

Method to determine leakage of a hydraulic pump

#21
20190003478
2019-01-03

Self adjusting pump for ice cream freezer

#22
20180347556
2018-12-06

Compressor, refrigerant compressing apparatus, and refrigerating apparatus

#23
20180320690
2018-11-08

Diagnostic system

#24
20180313343
2018-11-01

DYNAMIC VARIABLE ORIFICE FOR COMPRESSOR PULSATION CONTROL

#25
20180274491
2018-09-27

Fuel evaporative gas emission suppressor

#26
20180230996
2018-08-16

Liquid fuel delivery comprising a pump to deliver liquid fuel from a storage source to a delivery location and a controller mitigating power to operate the pump on the basis of a predetermined liquid threshold at the pump inlet

#27
20180180339
2018-06-28

Scroll unloading detection system

#28
20180166060
2018-06-14

Active cancellation of a pulsating flow with a source noise reference

#29
20180142678
2018-05-24

Dynamic variable orifice for compressor pulsation control

#30
20180136124
2018-05-17

Oil sensor for a compressor

#31
20170227273
2017-08-10

Controls and operation of variable frequency drives

#32
20170211573
2017-07-27

Method for twin screw positive displacement pump protection

#33
20170205316
2017-07-20

Rotary machine abnormality detection device and method thereof and rotary machine

#34
20170191922
2017-07-06

System and method for providing stable fluid flow

#35
20170114682
2017-04-27

Relief device of oil circuit of engine

#36
20170089340
2017-03-30

Compressor having oil-level sensing system

#37
20170045052
2017-02-16

Multiple compressor configuration with oil-balancing system

#38
20170009768
2017-01-12

Vane pumps with vane wear detection

#39
20160348493
2016-12-01

Downhole test signals for identification of operational drilling parameters

#40
20160319816
2016-11-03

Compressor having oil-level sensing system

#41
20160252093
2016-09-01

Compressor assembly with liquid sensor

#42
20160252092
2016-09-01

Compressor assembly with liquid sensor

#43
20160245288
2016-08-25

Motor driven compressor

#44
20160233814
2016-08-11

Electric pump

#45
20160226416
2016-08-04

Compressor having a control and diagnostic module

#46
20160201674
2016-07-14

Scroll vacuum pump and method of maintenance including replacing a tip seal of a scroll vacuum pump

#47
20160185617
2016-06-30

Locally powered water distillation system

#48
20160067629
2016-03-10

Pressurized vapor cycle liquid distillation

#49
20160040667
2016-02-11

Scroll compressor having an area of bypass holes formed at a compression chamber with a larger volume reduction gradient larger than an area of bypass holes at the other compression chamber

#50
20150377536
2015-12-31

Controls and operation of variable frequency drives

#51
20150252805
2015-09-10

Methods and systems to detect an operation condition of a compressor

#52
20150155701
2015-06-04

System and method for compressor motor protection

#53
20150114101
2015-04-30

Deposit detection device for exhaust pump and exhaust pump

#54
20150064040
2015-03-05

Compressor assembly with liquid sensor

#55
20140377084
2014-12-25

Liquid ring vacuum pump with cavitation regulation

#56
20140322055
2014-10-30

Scroll vacuum pump and method of maintenance including replacing a tip seal of a scroll vacuum pump

#57
20140255215
2014-09-11

Intelligent pump monitoring and control system

#58
20140196490
2014-07-17

System and method for controlling a variable speed drive of a compressor motor

#59
20140190816
2014-07-10

Pressurized vapor cycle liquid distillation

#60
20140163748
2014-06-12

Control system for variable displacement pump

#61
20140119966
2014-05-01

Method for rotary positive displacement pump protection

#62
20140021029
2014-01-23

Locally powered water distillation system

#63
20130334026
2013-12-19

Pressurized vapor cycle liquid distillation

#64
20130292241
2013-11-07

Pressurized vapor cycle liquid distillation

#65
20130259707
2013-10-03

System and method for monitoring and control of cavitation in positive displacement pumps

#66
20130098089
2013-04-25

Device and method for controlling compressor, and refrigerator including same

#67
20130064699
2013-03-14

HYDRAULIC TRANSPORT DEVICE AND ELECTROHYDRAULIC CONTROL MODULE

#68
20120303311
2012-11-29

Method for calculating the probability of moisture build-up in a compressor

#69
20120294733
2012-11-22

Compressor

#70
20120258000
2012-10-11

System and method for monitoring pump lining wear

#71
20120183418
2012-07-19

Screw compressor having reverse rotation protection

#72
20120107141
2012-05-03

Motor-driven compressor and controller therefor

#73
20120047999
2012-03-01

Vane pump apparatus and leak check system having the same

#74
20120045349
2012-02-23

Pressure pulsation dampener

#75
20120020807
2012-01-26

METHOD AND SYSTEM FOR NOISE CONTROL IN HYDRAULIC PUMPS

#76
20110239672
2011-10-06

Oil level detecting device for a compressor and an air conditioning system having the same

#77
20110236244
2011-09-29

Fluid rotary machine with a sensor arrangement

#78
20110236243
2011-09-29

Fluid rotary machine capable of high-accuracy detection of shaft rotation

#79
20110211973
2011-09-01

Compressor with oil level controller

#80
20110169651
2011-07-14

Open circuit wear sensor for use with a conductive wear counterface

#81
20110129361
2011-06-02

Compressor capacity control method and device for controlling the capacity of a compressor

#82
20110129356
2011-06-02

Electric-motor-driven oil pump control system

#83
20110120165
2011-05-26

Air conditioner and compressor having power and saving modes of operation

#84
20110048224
2011-03-03

HYDRAULIC PUMP OR HYDRAULIC MOTOR HAVING A ROTATION SPEED SENSOR

#85
20100326812
2010-12-30

Method and apparatus for phase change enhancement

#86
20100293933
2010-11-25

Method for automatically determining the condition of a hydraulic aggregate

#87
20100293397
2010-11-18

Diagnostic system

#88
20100229626
2010-09-16

Apparatus for detecting a flammable atmosphere within a compressor, in particular a vacuum pump

#89
20100132389
2010-06-03

Compressor and refrigeration apparatus using the same

#90
20100101250
2010-04-29

Compressor diagnostic system

#91
20100080721
2010-04-01

Rotary fluid device with multi-level phase shift control

#92
20100037602
2010-02-18

Variable displacement pump

#93
20090292395
2009-11-26

Detection and correction of reverse operation of a compressor in a refrigeration system

#94
20090191082
2009-07-30

Screw compressor

#95
20090169364
2009-07-02

Progressive cavity apparatus with transducer and methods of forming and use

#96
20090162218
2009-06-25

Combination Power Plant/Fluid Compressor for Service Vehicles

#97
20090145737
2009-06-11

Water vapor distillation apparatus, method and system

#98
20090120114
2009-05-14

Compressor with flow control sensor

#99
20090047163
2009-02-19

Roots type pump and fuel cell system

#100
20090039808
2009-02-12

Motor control device and compressor

#101
20080273989
2008-11-06

MULTI-STAGE GAS COMPRESSING APPARATUS

#102
20080133181
2008-06-05

Locally powered water distillation system

#103
20080105610
2008-05-08

Pressurized vapor cycle liquid distillation

#104
20080105533
2008-05-08

Pressurized vapor cycle liquid distillation

#105
20080105532
2008-05-08

Liquid pumps with hermetically sealed motor rotors

#106
20080105530
2008-05-08

Pressurized vapor cycle liquid distillation

#107
20080105403
2008-05-08

Pressurized vapor cycle liquid distillation

#108
20070196213
2007-08-23

Metering pump with self-calibration and health prediction

#109
20070177983
2007-08-02

AIRFLOW COMPRESSOR CONTROL SYSTEM AND METHOD

#110
20070107435
2007-05-17

Method and apparatus for determining the extent of internal wear in a fuel pump of a fuel system

#111
20070022771
2007-02-01

Cooling system with variable capacity control

#112
20070017192
2007-01-25

Pressurized vapor cycle liquid distillation

#113
20060288715
2006-12-28

Compressor with capacity control

#114
20060230824
2006-10-19

SPEED SENSOR FLANGE ASSEMBLIES

#115
20060080978
2006-04-20

Compressor diagnostic system

#116
20060016200
2006-01-26

Compressor diagnostic method

#117
20050247073
2005-11-10

Drive unit for compressor and refrigerator

#118
20050183832
2005-08-25

Method and apparatus for phase change enhancement

#119
20050126194
2005-06-16

Refrigerant cycle apparatus

#120
20050016828
2005-01-27

Pressurized vapor cycle liquid distillation

#121
18207865
2024-09-03

Liquid discharge system including liquid product pump having vibration sensor