ClassID:

249203

Y10T137/7838 - CPC Classification

Classification description:

Fluid handling; Line condition change responsive valves; Direct response valves [i.e., check valve type] Plural

Sub-classes:
Recent Application in this class:
#1
20250020115
2025-01-16

FLUID END OF RECIPROCATING PUMP

#2
20240384806
2024-11-21

PRESSURE RELIEF VALVE ASSEMBLY INCLUDING SERIES COUPLED VALVES AND RELATED METHODS

#3
20240077142
2024-03-07

VALVE APPARATUS

#4
20240003446
2024-01-04

Anti-spin outer diameter guided compressor valve

#5
20230296185
2023-09-21

Dual poppet pressure relief valve with vacuum adaptor capability

#6
20230025349
2023-01-26

Eccentric backflow preventer

#7
20220412476
2022-12-29

Dual poppet pressure relief valve with vacuum adaptor capability

#8
20220349485
2022-11-03

Backflow prevention and method of manufacture

#9
20220034415
2022-02-03

Check valve for use in animal drinker systems

#10
20210353850
2021-11-18

Constant pressure syringe for surgical use

#11
20210293341
2021-09-23

Thermodynamic valve for retaining vapours and gases and relieving pressure and vacuum

#12
20210156486
2021-05-27

Backflow prevention and method of manufacture

#13
20210071437
2021-03-11

Dispensing systems

#14
20210047852
2021-02-18

Dispensing systems

#15
20200271234
2020-08-27

Valve apparatus

#16
20200224781
2020-07-16

Dual poppet pressure relief valve with vacuum adaptor capability

#17
20200078580
2020-03-12

Connector for transferring fluid and method of use

#18
20200025308
2020-01-23

Check valve assembly

#19
20190360604
2019-11-28

Aspirator system pressure relief mechanism

#20
20190257470
2019-08-22

Check valve

#21
20190203488
2019-07-04

Dispensing systems

#22
20190186645
2019-06-20

Check valves

#23
20190168607
2019-06-06

Ventilation flow rate regulator for a pressurised tank of a vehicle

#24
20180345002
2018-12-06

Connector for transferring fluid

#25
20180223879
2018-08-09

Pressure limiting device, in particular for an assist system for vehicles

#26
20180133377
2018-05-17

Constant pressure syringe for surgical use

#27
20170336023
2017-11-23

Check valve

#28
20170306594
2017-10-26

Dual check backflow preventer

#29
20170290216
2017-10-05

Connector for transferring fluid and method of use

#30
20170284600
2017-10-05

ENVIRONMENTAL COMPRESSOR PROTECTION ASSEMBLY

#31
20170073941
2017-03-16

Dual check backflow preventer

#32
20170030100
2017-02-02

Dispensing systems

#33
20160327170
2016-11-10

Inflation valve allowing for rapid inflation and deflation of an inflatable object

#34
20160287858
2016-10-06

Connector for transferring fluid

#35
20160153613
2016-06-02

Environmental compressor protection assembly

#36
20160097486
2016-04-07

Check valve

#37
20160040663
2016-02-11

Check valve

#38
20150362087
2015-12-17

Pressure limited flow priority boost

#39
20150345651
2015-12-03

Method and apparatus for beverage extraction with improved gas cylinder access

#40
20150219228
2015-08-06

Backflow prevention and method of manufacture

#41
20150198343
2015-07-16

Valve for roof vent

#42
20150198257
2015-07-16

Variable suction device for an A/C compressor to improve nvh by varying the suction inlet flow area

#43
20150184765
2015-07-02

Valve unit with axial pressure medium unit

#44
20150150383
2015-06-04

Inflation valve allowing for rapid inflation and deflation of an inflatable object

#45
20150041009
2015-02-12

Device for delivery of sample fluid

#46
20150035350
2015-02-05

Biased double check valve for brake system

#47
20150028529
2015-01-29

Valve for a vehicle suspension system

#48
20150020898
2015-01-22

Hydraulic valve and pressure differential type liquid dispenser having the same

#49
20140367415
2014-12-18

Method and apparatus for beverage extraction with improved gas cylinder access

#50
20140360590
2014-12-11

High reliability pressure relief valve

#51
20140305521
2014-10-16

Dynamic valve seal arrangement

#52
20140260235
2014-09-18

Emergency cylinder lowering circuit with regenerative hydraulics and burst protection

#53
20140251939
2014-09-11

Flow control and training cup valve assemblies

#54
20140209205
2014-07-31

Filler coupling and corresponding receptacle and filling method

#55
20140182740
2014-07-03

Filler coupling and corresponding receptacle and filling method

#56
20140158228
2014-06-12

Spring assisted active mud check valve with spring

#57
20140155836
2014-06-05

Connector for transferring fluid and method of use

#58
20140083509
2014-03-27

Water storage reserve and return method and apparatus

#59
20130333803
2013-12-19

Pressure regulator valve

#60
20130319548
2013-12-05

Automatic air evacuation appratus for swimming pool and spa filters

#61
20130228241
2013-09-05

Check valve system for managing fluids

#62
20130220430
2013-08-29

Valve with electromechanical device for actuating the valve

#63
20130139913
2013-06-06

Switching valve to control a fluid subject to high pressure

#64
20130092262
2013-04-18

Pumping device for sucking or draining fluid

#65
20130048110
2013-02-28

Single seal breakaway connector

#66
20130037135
2013-02-14

DUAL-SOURCE WATER SYSTEMS

#67
20130032225
2013-02-07

PRESSURE CONTROL VALVE

#68
20130025711
2013-01-31

Self Piloted Check Valve

#69
20130014837
2013-01-17

Proportional poppet valve with integral check valves

#70
20120325340
2012-12-27

Apparatus to eliminate back drive in push pull system of rotor aircraft and related methods

#71
20120298227
2012-11-29

Cell flow technology that provides continuously variable, and renewable, continuance of pressure resistance

#72
20120291889
2012-11-22

Oil control valve and variable valve lift system provided with the same

#73
20120260993
2012-10-18

Poppet valve assembly for controlling a pneumatic actuator

#74
20120241027
2012-09-27

Adjustable fail-safe suction stop valve

#75
20120241026
2012-09-27

Check Valve for Abrasive Blaster Pressure Vessel

#76
20120216884
2012-08-30

Check valve construction

#77
20120202408
2012-08-09

Pressure regulation in remote zones

#78
20120186670
2012-07-26

Device for ventilating and aerating a fuel tank

#79
20120186659
2012-07-26

Fluid control valve systems, fluid systems equipped therewith, and methods of using

#80
20120160335
2012-06-28

Pressure retention valve and integrated valve for tank system

#81
20120128533
2012-05-24

Liquid supply device using check valve and reactive liquid chromatography system

#82
20120111414
2012-05-10

Method for reservoir mixing in a municipal water supply system

#83
20120103438
2012-05-03

One-handle Type Faucet having a double anti-reverse function to prevent waste materials from flowing backward into the faucet when disaster happens

#84
20120055572
2012-03-08

Backflow prevention and method of manufacture

#85
20120018013
2012-01-26

Apparatus and methods to dispense fluid from a bank of containers and to refill same

#86
20120018012
2012-01-26

Apparatus and methods to dispense fluid from a bank of containers and to refill same

#87
20120012678
2012-01-19

Sprinkler with pressure regulation

#88
20120006828
2012-01-12

Filler coupling and corresponding receptacle and filling method

#89
20120006445
2012-01-12

Filler coupling and corresponding receptacle and filling method

#90
20120006428
2012-01-12

Valve assembly

#91
20110265745
2011-11-03

Cylinder head of an internal combustion engine

#92
20110226357
2011-09-22

Flush valve anti-backflow cartridge

#93
20110219751
2011-09-15

Fuel delivery system for selectively providing fuel to various engine components

#94
20110152787
2011-06-23

Connector for transferring fluid and method of use

#95
20110146815
2011-06-23

FLUID VALVE ARRANGEMENT

#96
20110146805
2011-06-23

Flow control device and flow control method

#97
20110126923
2011-06-02

Valve Assembly

#98
20110126922
2011-06-02

Device for producing and providing a vacuum, and ventilation valve

#99
20110126804
2011-06-02

Common rail fuel pump with combined discharge and overpressure relief valves

#100
20110088800
2011-04-21

Liquid drain system

#101
20110083750
2011-04-14

Method for operating a hydraulic actuation power system experiencing pressure sensor faults

#102
20110041930
2011-02-24

Pressure relief valve

#103
20110041929
2011-02-24

Squeeze film damper valve for compressor cylinders

#104
20110033313
2011-02-10

Air flow control apparatus

#105
20110028853
2011-02-03

Check valve structure, diaphragm pump, and sphygmomanometer

#106
20110017313
2011-01-27

Device and method for aseptic pressure relief

#107
20100319275
2010-12-23

Vapor barrier with valve for a building

#108
20100313967
2010-12-16

Slurry flow control device

#109
20100243082
2010-09-30

Liquid isotope delivery system

#110
20100243065
2010-09-30

Valve assemblies and related systems and methods

#111
20100243061
2010-09-30

PRESSURE REGULATOR VALVE

#112
20100186366
2010-07-29

System and method for water injection in a turbine engine

#113
20100163775
2010-07-01

Valve sealant fitting

#114
20100163121
2010-07-01

VALVE CONTROL UNIT OF TANK LORRY

#115
20100163120
2010-07-01

Methods, apparatus and/or systems relating to controlling flow through concentric passages

#116
20100160900
2010-06-24

Multi-function valve for surgical instrument

#117
20100155408
2010-06-24

TANK VENTILATION SYSTEM

#118
20100147401
2010-06-17

Sprinkler with pressure regulation

#119
20100139786
2010-06-10

Multi-protection valve

#120
20100139625
2010-06-10

Vehicle fuel system and components thereof

#121
20100137841
2010-06-03

Constant pressure syringe for surgical use

#122
20100108157
2010-05-06

Valve with electromechanical device for actuating the valve

#123
20100037615
2010-02-18

Multi-stage check valve

#124
20100032029
2010-02-11

Radial flow oscillating valve for reciprocating compressors and pumps

#125
20100032027
2010-02-11

Backflow preventer

#126
20100028179
2010-02-04

Chemical liquid supplying apparatus

#127
20100024889
2010-02-04

Unidirectional Flow Device and Methods of Use

#128
20100018593
2010-01-28

CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS

#129
20100002897
2010-01-07

Pressure regulating systems for expandable insertion devices

#130
20100000617
2010-01-07

Construction equipment machine with hydraulic pressure controlled selecting system

#131
20090301583
2009-12-10

SMALL ENGINE FUEL SYSTEM

#132
20090299300
2009-12-03

Connector for transferring fluid and method of use

#133
20090288719
2009-11-26

Tank pressure and vacuum relief device

#134
20090242046
2009-10-01

Valve module

#135
20090241869
2009-10-01

Vehicle and propulsion system including an internal combustion engine

#136
20090235993
2009-09-24

Flow rate control device

#137
20090206024
2009-08-20

Additive dispensing device and a thermally activated additive dispensing filter having the additive dispensing device

#138
20090175746
2009-07-09

Compressor

#139
20090155668
2009-06-18

Multi-stage in-line cartridge ejector for fuel cell system

#140
20090147830
2009-06-11

Synchronization band selection of a frequency hopping wireless receiver

#141
20090147474
2009-06-11

APPARATUS FOR PREVENTING REFLUENCE OF AIR IN AN ELECTRONIC DEVICE

#142
20090139585
2009-06-04

INTEGRATED AIR TANK

#143
20090120949
2009-05-14

Ventilation member, ventilation member kit, and vented housing and vented tank using them

#144
20090114521
2009-05-07

Contaminated solvent recycling system

#145
20090114292
2009-05-07

Valve assembly

#146
20090078111
2009-03-26

Double check valve having floating function

#147
20090053077
2009-02-26

Flow prioritizing valve system

#148
20090050216
2009-02-26

Valve systems for use with a fluid injector system

#149
20090038693
2009-02-12

Combination relief valve and injection fitting

#150
20080251141
2008-10-16

Backflow prevention for high pressure gradient systems

#151
20080167613
2008-07-10

Closed system and method for atraumatic, low pressure, continuous harvesting, processing, and grafting of lipoaspirate

#152
20080152523
2008-06-26

Y-type fluid end with replaceable suction module

#153
20080151684
2008-06-26

Method and apparatus for reservoir mixing

#154
20080142093
2008-06-19

Adjustable pneumatic system for a surgical machine

#155
20080138224
2008-06-12

FLUID END

#156
20080127916
2008-06-05

Vehicle and propulsion system including an internal combustion engine

#157
20080087331
2008-04-17

Combined safety valve

#158
20080066460
2008-03-20

Vehicular hydraulic system with priority valve and relief valve

#159
20080042373
2008-02-21

Sealing arrangement with a segmented seal and pressure relief

#160
20080041452
2008-02-21

Check valve assemblies and related methods

#161
20080029164
2008-02-07

Vacuum relief unit and method for a pool

#162
20070272311
2007-11-29

Valve systems and injector system including such valve systems

#163
20070258318
2007-11-08

Apparatus for reservoir mixing in a municipal water supply system

#164
20070221275
2007-09-27

Shuttle valve

#165
20070215216
2007-09-20

CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS

#166
20070215209
2007-09-20

Apparatus and methods to dispense fluid from a bank of containers and to refill same

#167
20070204917
2007-09-06

Backflow prevention device

#168
20070204916
2007-09-06

Backflow prevention device

#169
20070193632
2007-08-23

Artificial heart valve and rotary pressure porting mechanisms

#170
20070177989
2007-08-02

Valve assembly for pressure washer pump

#171
20070044848
2007-03-01

Check valve

#172
20070007364
2007-01-11

Sprinkler with pressure regulation

#173
20060213556
2006-09-28

Single-piece manifold with reduced pressure arrangement

#174
20060185731
2006-08-24

Backflow preventer

#175
20060169329
2006-08-03

Check valve with low shut off sound

#176
20060169327
2006-08-03

Pressure regulation in remote zones

#177
20060137747
2006-06-29

Angled dual check valve

#178
20060108010
2006-05-25

Simple diverter valve for a roman tub with replaceable cartridge including at least two checks

#179
20060102113
2006-05-18

Reed valve breather for evolution engine

#180
20060076062
2006-04-13

Backflow preventer

#181
20060065316
2006-03-30

Non-return valve

#182
20060027270
2006-02-09

Connector with check valve and method of use

#183
20060011661
2006-01-19

Fluid-dispensing pump and container provided therewith

#184
20050263190
2005-12-01

DOUBLE HEAT TRAP IN UNITARY BODY

#185
20050250981
2005-11-10

Method of preventing inadvertent inflation of an inflatable prosthesis

#186
20050229975
2005-10-20

Valve arrangement for reciprocating machinery such as a pump and an compressor

#187
20050211299
2005-09-29

Back flow preventer made of at least two different types of material

#188
20050205134
2005-09-22

Valve housing, cover, seal and method

#189
20050199291
2005-09-15

Radial poppet-type check valve with closure assist feature

#190
20050194047
2005-09-08

Check valve for a fluid administration system

#191
20050189019
2005-09-01

Second exhaust valve for a second stage regulator

#192
20050178445
2005-08-18

Dual restrictor shut-off valve

#193
20050173004
2005-08-11

Methods and systems for performing, monitoring and analyzing multiple machine fluid processes

#194
20050173000
2005-08-11

Air valve for inflatable bladder

#195
20050166963
2005-08-04

Valve with electromechanical device for actuating the valve

#196
20050158188
2005-07-21

Method of manufacturing a micropump check valve

#197
20050145281
2005-07-07

Dual ball valve air vent valve

#198
20050115614
2005-06-02

Valve with reversible valve seat for high-pressure pump (HP)

#199
20050056257
2005-03-17

Fuel supply apparatus and fuel pressure regulator

#200
20050053504
2005-03-10

Micropump check valve device and method of manufacturing the same

#201
20050008516
2005-01-13

Backflow prevention for high pressure gradient systems