Patents-Review.com
ClassID:

143899 ⎘

F04C2270/20 - CPC Classification

Classification description:

Control; Monitoring or safety arrangements Flow

Sub-classes:
Recent Application in this class:
#1
20260110299
2026-04-23

AIR COMPRESSOR HAVING VACUUM AND ASSOCIATED METHODS FOR LOADING AND EXTRACTING MATERIALS

 #2
20250314250
2025-10-09

METHODS FOR MEASURING FLUID FLOW OF FLUID SUPPLY ASSEMBLY

 #3
20240401595
2024-12-05

METHOD FOR CONTROLLING A ROTARY SCREW COMPRESSOR

 #4
20240240635
2024-07-18

PUMP AND METHOD

 #5
20240102710
2024-03-28

Refrigerant bypass solution

 #6
20230340957
2023-10-26

AIR COMPRESSOR HAVING VACUUM AND ASSOCIATED METHODS FOR LOADING AND EXTRACTING MATERIALS

 #7
20230323877
2023-10-12

METHODS FOR MEASURING FLUID FLOW OF FLUID SUPPLY ASSEMBLY

 #8
20230296096
2023-09-21

Lubricant-sealed vacuum pump, lubricant filter and method

 #9
20230279857
2023-09-07

Method for controlling a rotary screw compressor

 #10
20230167819
2023-06-01

Scroll compressor including discharge guide to quicken discharge refrigerant flow movement

 #11
20220170465
2022-06-02

Refrigerant bypass solution

 #12
20220082100
2022-03-17

Method for controlling a rotary screw compressor

 #13
20210262466
2021-08-26

Pump with detection of absolute angle of rotation

 #14
20200362839
2020-11-19

Method for determining a flow volume of a fluid delivered by a pump

 #15
20200040889
2020-02-06

Pump ripple pressure monitoring for incompressible fluid systems

 #16
20190277287
2019-09-12

IMPROVED LIQUID RING PUMP

 #17
20190201086
2019-07-04

Surgical evacuation sensing and display

 #18
20190032666
2019-01-31

Refrigerant compressor unit

 #19
20180355869
2018-12-13

SCROLL COMPRESSOR PROVIDED WITH A FLUID DEFLECTING AND DIVIDING DEVICE

 #20
20180347565
2018-12-06

Rotary compressor with a valve in the vane

 #21
20180291904
2018-10-11

Compressor system with internal air-water cooling

 #22
20180291902
2018-10-11

Method for controlling a rotary screw compressor

 #23
20180135626
2018-05-17

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

 #24
20180128253
2018-05-10

Compressor system for generating compressed air, as well as method for operating a compressor system that generates compressed air

 #25
20180112661
2018-04-26

VARIABLE DISPLACEMENT VANE PUMP

 #26
20160041026
2016-02-11

Method of determining pump flow in twin screw positive displacement pumps

 #27
20160010641
2016-01-14

System and method for control and optimization of PCP pumped well operating parameters

 #28
20150052936
2015-02-26

Sealed compressor and vapor compression refrigeration cycle apparatus including the sealed compressor

 #29
20130108494
2013-05-02

Metering gear pump with integral flow indicator

 #30
20120085119
2012-04-12

Refrigerant compressor and heat pump apparatus

 #31
20120085118
2012-04-12

Refrigerant compressor and heat pump apparatus

 #32
20110036416
2011-02-17

Device for dividing a flow equally between two or more objects

 #33
20100209266
2010-08-19

Electric compressor integral with drive circuit

 #34
20100139611
2010-06-10

Hydraulic pump with variable flow and pressure and improved open-loop electric control

 #35
20090292395
2009-11-26

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

 #36
20090078422
2009-03-26

Enclosed circulation tool for a well

 #37
20090041605
2009-02-12

Adjusting valve for adjusting the delivery volume of a displacement pump

 #38
20080217485
2008-09-11

Smart vortex generator, and aircraft, vessel, and rotary machine being equipped with the same

 #39
20070065326
2007-03-22

ROTARY PISTON AND METHODS FOR OPERATING A ROTARY PISTON AS A PUMP, COMPRESSOR AND TURBINE

 #40
20060216159
2006-09-28

Multiple compressor control system

 #41
20060177332
2006-08-10

Step-type capacity varying apparatus of scroll compressor

 #42
20060168996
2006-08-03

Refrigerating device, refrigerator, compressor, and gas-liguid separator

 #43
20060073051
2006-04-06

Capacity-changing unit of orbiting vane compressor

 #44
20050169773
2005-08-04

Oil pump for an automatic transmission of a motor vehicle

 #45
20050118033
2005-06-02

Method for adjusting a volumetric flow-variable positive displacement pump in an internal combustion engine

 #46
20050100447
2005-05-12

Flow control system for a gas turbine engine

 #47
20050089431
2005-04-28

Guide device for the movable scroll of a scroll compressor

 #48
20050079071
2005-04-14

Variable capacity rotary compressor

 #49
20050069442
2005-03-31

Variable capacity rotary compressor

 #50
20050069441
2005-03-31

Variable capacity rotary compressor

 #51
20050031463
2005-02-10

Continuous variable suction system

 #52
20050019175
2005-01-27

Variable displacement pump