ClassID:

249282

Y10T137/7925 - CPC Classification

Classification description:

Fluid handling; Line condition change responsive valves; Direct response valves [i.e., check valve type]; Reciprocating valves; Spring biased Piston-type valves

Recent Application in this class:
#1
20260146601
2026-05-28

SPRING CONTROLLING VALVE

#2
20250297688
2025-09-25

HYDRAULIC FLUID RELEASE VALVE ASSEMBLIES

#3
20240084905
2024-03-14

SYSTEMS AND METHODS FOR PISTON CHECK VALVES

#4
20230407864
2023-12-21

SPRING CONTROLLING VALVE

#5
20230332705
2023-10-19

Pressure relief valve with bi-directional seat

#6
20230250822
2023-08-10

Compressor with a suction valve having a spring, a seal, and a cylindrical suction valve body

#7
20230243430
2023-08-03

Flow control valve

#8
20230151898
2023-05-18

Check valve

#9
20230010656
2023-01-12

Device for regulating pressures of a flow medium using a valve

#10
20220307568
2022-09-29

Fluid-damped valve

#11
20220282797
2022-09-08

Systems and methods for piston check valves

#12
20220260165
2022-08-18

Valve, device for regulating the pressure of a flow medium using the valve, and device for securing the valve in a transmission component

#13
20220243831
2022-08-04

Pressure relief valve with bi-directional seat

#14
20220145997
2022-05-12

Flow control valve

#15
20200408316
2020-12-31

Pressure relief valve with bi-directional seat

#16
20200182363
2020-06-11

Hydraulic control apparatus

#17
20200103044
2020-04-02

Relief valve

#18
20200032917
2020-01-30

Fluid injection valve

#19
20200023729
2020-01-23

Methods and system for a zero hysteresis valve

#20
20190316696
2019-10-17

Damped check valve having multi-pressure operation

#21
20190301624
2019-10-03

Valve with segmented spring guide assembly

#22
20190219195
2019-07-18

Split micro-valve

#23
20180017171
2018-01-18

Dynamic valve seal having retaining features

#24
20170284600
2017-10-05

ENVIRONMENTAL COMPRESSOR PROTECTION ASSEMBLY

#25
20170204850
2017-07-20

Over pressure relief system for fluid ends

#26
20160215891
2016-07-28

Dynamic valve seal having retaining features

#27
20160153613
2016-06-02

Environmental compressor protection assembly

#28
20150330530
2015-11-19

Bypass valve

#29
20150252909
2015-09-10

Low head to stem ratio poppet valve

#30
20150247590
2015-09-03

Oscillating pressure in a finite volume

#31
20150226204
2015-08-13

Electrically actuated pressure regulating valve for an adjustable hydrostatic pump, and adjustable hydrostatic pump having a pressure regulating valve

#32
20150211500
2015-07-30

Check valve for compressor

#33
20150198257
2015-07-16

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

#34
20150129057
2015-05-14

Static back pressure regulator

#35
20150107701
2015-04-23

Regulator valve

#36
20150059884
2015-03-05

Relief valve with directable outlet

#37
20140367903
2014-12-18

Unclamp feedback unit

#38
20140322061
2014-10-30

Check valve for an engine vacuum pump

#39
20140311585
2014-10-23

Filter bypass valve

#40
20140305521
2014-10-16

Dynamic valve seal arrangement

#41
20140147315
2014-05-29

Piston pump for delivering fluids, and associated vehicle brake system

#42
20130192697
2013-08-01

Check valve

#43
20130146159
2013-06-13

FLOW CONTROLLABLE CONNECTOR FOR HOME APPLIANCES

#44
20130014838
2013-01-17

Relief device for oil pump

#45
20120248251
2012-10-04

Conduit protection system and method

#46
20120234420
2012-09-20

Steam supply system and check valve for use therein

#47
20120227839
2012-09-13

Check valve assembly for well stimulation operations

#48
20120223267
2012-09-06

Valve having opposed curved sealing surfaces on a valve member and a valve seat to facilitate effective sealing

#49
20120222760
2012-09-06

Valve cartridge for pump systems

#50
20120168005
2012-07-05

Pressure retention valve

#51
20120121443
2012-05-17

Air compressor having enlarged compartment for receiving pressurized air

#52
20120103447
2012-05-03

Relief valve for oil pump

#53
20120103442
2012-05-03

Relief valve for oil pump

#54
20120103439
2012-05-03

Flow control assembly

#55
20110297259
2011-12-08

Oil pump system for an engine

#56
20110277850
2011-11-17

Full flow pressure relief valve

#57
20110217157
2011-09-08

Control valve with radial seals

#58
20110192474
2011-08-11

Hydraulic control valve for construction machinery

#59
20110162732
2011-07-07

ANTI-SIPHON CHECK VALVE

#60
20110146820
2011-06-23

Transmission hydraulic control system having an accumulator bypass valve assembly

#61
20110127458
2011-06-02

By-pass valve for heat exchanger

#62
20110107768
2011-05-12

Variable performance valve of a fuel nozzle for a turbine engine

#63
20110079302
2011-04-07

Pump Valve with Full Elastomeric Contact on Seat

#64
20110067767
2011-03-24

Sequence valve

#65
20100283338
2010-11-11

Oil filter bypass valve assembly for a generator

#66
20100281997
2010-11-11

Flow control assembly

#67
20100252640
2010-10-07

THERMOSTATIC MIXING VALVE

#68
20100243940
2010-09-30

Relief valve

#69
20100206405
2010-08-19

PILOT OPERATED CHECK VALVE

#70
20100158704
2010-06-24

Compliant-seal check valve

#71
20100116503
2010-05-13

Dual check valve

#72
20100096028
2010-04-22

ANTI-BACKFLOW VALVE

#73
20100084028
2010-04-08

Soft seat pilot-to-open check valve

#74
20100078085
2010-04-01

Relief valve structure

#75
20100037965
2010-02-18

Check valve with separate spherical spring guide

#76
20100037615
2010-02-18

Multi-stage check valve

#77
20090302250
2009-12-10

Solenoid valve

#78
20090199916
2009-08-13

By-pass valve for heat exchanger

#79
20090199912
2009-08-13

Pressure regulating valve with a direct damping action

#80
20090159824
2009-06-25

POPPET VALVES

#81
20090120514
2009-05-14

Check valve having two seats

#82
20090114289
2009-05-07

Relief valve including a check valve in a damping chamber

#83
20090101218
2009-04-23

Valve means

#84
20090065215
2009-03-12

Fluid injection device

#85
20090032123
2009-02-05

Check valve

#86
20090032122
2009-02-05

Check valve structure for use in pump of hydraulic cylinder

#87
20090025938
2009-01-29

Fluid injection device

#88
20090000675
2009-01-01

Combined relief valve and check valve

#89
20080295817
2008-12-04

VALVE FOR AIR TANK

#90
20080271793
2008-11-06

Load-Pressure-Operated Flow Rate Regulator with Vibration Damping

#91
20080210313
2008-09-04

Pressure limiting valve with reduced differential area

#92
20080206078
2008-08-28

Electric pump unit and electric oil pump apparatus

#93
20080191428
2008-08-14

Sealing bush, hydraulic unit, and check valve

#94
20080185045
2008-08-07

ENERGY RECOVERY APPARATUS AND METHOD

#95
20080087332
2008-04-17

Active intake pressure control of downhole pump assemblies

#96
20080011364
2008-01-17

Sprayer tank cap with incorporated pressure relief valve

#97
20070272315
2007-11-29

High accuracy low leakage valve for high pressure applications

#98
20070246103
2007-10-25

Relief valve

#99
20070215356
2007-09-20

Dual check valve

#100
20070194137
2007-08-23

Thermostatic mixing valve

#101
20070125352
2007-06-07

Valve for air tank

#102
20070107784
2007-05-17

Pressure control valve

#103
20070095404
2007-05-03

Pressure limiting valve with a hydraulic seal ring

#104
20070079878
2007-04-12

Pressure limiting valve

#105
20070062582
2007-03-22

Structure of relief valve for oil pump

#106
20070023087
2007-02-01

Screwable check valve

#107
20060267320
2006-11-30

Airbag device

#108
20060260595
2006-11-23

Valve for air tank

#109
20060196553
2006-09-07

Non-return valve

#110
20060185737
2006-08-24

Pressure relief valve with debris trap

#111
20060151031
2006-07-13

Directly controlled pressure control valve

#112
20060130903
2006-06-22

Check valve

#113
20060108435
2006-05-25

By-pass valve for heat exchanger

#114
20060075993
2006-04-13

Fuel pressure regulation valve

#115
20060042617
2006-03-02

Valve for air tank

#116
20060037648
2006-02-23

Siphonable check valve and method of making same

#117
20050223885
2005-10-13

Controlled-flow hydraulic distributor

#118
20050173005
2005-08-11

Pressure relief valve with direct hydraulic damping

#119
20050166970
2005-08-04

Low pressure drop check valve

#120
20050161093
2005-07-28

Backflow prevention valve

#121
20050103385
2005-05-19

Valve body for backflow prevention valve

#122
20050072477
2005-04-07

Air fitting with an integral check valve

#123
20050067023
2005-03-31

Fuel return valve

#124
20050051217
2005-03-10

Valve

#125
20050034766
2005-02-17

By-pass pressure regulator

#126
20050005973
2005-01-13

Pressure regulator for a fuel supply system of an internal combustion engine

#127
17891731
2023-09-19

Spring controlling valve

#128
15714406
2019-10-15

Pressure regulating valve with multi-pronged piston assembly

#129
15132539
2016-08-30

Modular check valve system