ClassID:

249261

Y10T137/7898 - CPC Classification

Classification description:

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

Sub-classes:
Recent Application in this class:
#1
20240209860
2024-06-27

HYDRAULIC SYSTEM FOR A HOUSEHOLD APPLIANCE

#2
20230052876
2023-02-16

Sealing valve

#3
20230025349
2023-01-26

Eccentric backflow preventer

#4
20220379151
2022-12-01

SYSTEMS, METHODS, AND APPARATUSES FOR MECHANICALLY SECURING A CHECK VALVE IN AN OPEN POSITION DURING MAINTENANCE AND TESTING OPERATIONS

#5
20220074514
2022-03-10

Adjustable check valve

#6
20210254731
2021-08-19

Check valve pivot pin retainer seal

#7
20210222783
2021-07-22

Angle type check valve

#8
20210222782
2021-07-22

Angle type check valve

#9
20210199057
2021-07-01

Valve assembly for exhaust system

#10
20210033213
2021-02-04

System and apparatus for controlling fluid flow in drainage systems

#11
20210025340
2021-01-28

Externally mounted in-line exhaust gas valve

#12
20200318743
2020-10-08

Check valve flapper with reduced moment of inertia and method of making

#13
20200011440
2020-01-09

Check valves

#14
20190316694
2019-10-17

Check valve assembly

#15
20190056033
2019-02-21

Valves including multiple seats and related assemblies and methods

#16
20180372233
2018-12-27

Check valves

#17
20180266575
2018-09-20

Valve device for exhaust flow passage

#18
20180112780
2018-04-26

Valves including multiple seats and related assemblies and methods

#19
20180038495
2018-02-08

Passive exhaust valve with external torsion spring

#20
20180038494
2018-02-08

Passive exhaust valve with dual torsion spring

#21
20170343122
2017-11-30

Check valve with accelerated closure

#22
20170268696
2017-09-21

Check valves

#23
20170198823
2017-07-13

Check valve with accelerated closure

#24
20160222863
2016-08-04

Passive exhaust valve assembly and forming method

#25
20160061339
2016-03-03

Explosion-proof valve

#26
20160040799
2016-02-11

Check valve housing

#27
20160040793
2016-02-11

Check valve with backbone enhanced petals

#28
20160040792
2016-02-11

Check valve flapper

#29
20160010757
2016-01-14

Valve flapper spring stop mechanism

#30
20150375598
2015-12-31

Pressure relief valve

#31
20150292631
2015-10-15

Valve system

#32
20150240960
2015-08-27

High opening velocity check valve

#33
20150219229
2015-08-06

Self-sealing valve

#34
20150059881
2015-03-05

Triple offset butterfly pressure relief valve

#35
20150027566
2015-01-29

Valve device for exhaust gas flow path

#36
20140345716
2014-11-27

Flow-limiting device

#37
20140326323
2014-11-06

Apparatus and method for introducing a first fluid into the flow path of a second fluid and use of such an apparatus

#38
20140311595
2014-10-23

Flapper relief valve

#39
20140251461
2014-09-11

Check valve having petals with lift generating elements

#40
20140083531
2014-03-27

Valves

#41
20140041739
2014-02-13

Dual disk check valve with slotted stop bar

#42
20130340862
2013-12-26

High opening velocity check valve

#43
20130240059
2013-09-19

Variable resistance device

#44
20130233412
2013-09-12

Wafer check valve assembly and related methods of use

#45
20130228242
2013-09-05

Controlled isolation valve having reinforced sealing

#46
20130220430
2013-08-29

Valve with electromechanical device for actuating the valve

#47
20130061957
2013-03-14

Check valve

#48
20130056083
2013-03-07

Hybrid valve for attenuation of low frequency noise

#49
20130037278
2013-02-14

Differential dry pipe valve

#50
20130020520
2013-01-24

Check valve

#51
20130020089
2013-01-24

Tubular valving system and method

#52
20130019966
2013-01-24

Dual plate check valve

#53
20130014841
2013-01-17

Compressor

#54
20130008667
2013-01-10

Downhole deployment valves

#55
20130000745
2013-01-03

Flowline flapper valve

#56
20120325495
2012-12-27

Downhole deployment valves

#57
20120325494
2012-12-27

Downhole deployment valves

#58
20120304952
2012-12-06

Valve seat and gasket for exhaust bypass valve

#59
20120279586
2012-11-08

Unpowered apparatus for preventing backflow

#60
20120241028
2012-09-27

Non-return valve assembly of the pivoting flap type, typically for insertion in floor drains

#61
20120241020
2012-09-27

Nozzle check valve

#62
20120234940
2012-09-20

Low precipitation rate rotor-type sprinkler with intermittent stream diffusers

#63
20120234408
2012-09-20

CHECK VALVE WITH AXIAL THRUST ELEMENT

#64
20120211689
2012-08-23

Inlet control valves for use with fuel delivery systems

#65
20120205116
2012-08-16

Flapper valve

#66
20120177510
2012-07-12

HIGH-SPEED CHECK VALVE SUITABLE FOR CRYOGENS AND HIGH REVERSE PRESSURE

#67
20120160348
2012-06-28

High-temperature jointed assemblies and wear-resistant coating systems therefor

#68
20120132299
2012-05-31

Check valve

#69
20120107650
2012-05-03

MAGNETIC SEALING VALVE DEVICE FOR A BATTERY CASE

#70
20120073277
2012-03-29

Valve for motor vehicle exhaust muffler

#71
20120048399
2012-03-01

EXPLOSION PROTECTION VALVE FOR INTERRUPTING A FLUID FLOW IN A PIPELINE

#72
20120042968
2012-02-23

Metal plate for dual plate check valve

#73
20120037233
2012-02-16

DIRECT FREE COOLING

#74
20120024532
2012-02-02

Pressure vortex device to allow flapper closure in high velocity fluid applications

#75
20120012202
2012-01-19

Irregularly shaped flapper closure and sealing surfaces

#76
20110308644
2011-12-22

Air intake modulator and method of using

#77
20110303864
2011-12-15

Aperture-shaped variable valve

#78
20110297245
2011-12-08

Valve for inflatable objects

#79
20110284128
2011-11-24

One-way valve for a fuel-tank filling conduit

#80
20110271771
2011-11-10

Adjustable orifice for coal supply conduit

#81
20110259550
2011-10-27

WIND-PRESSURE SHUTTER AND COOLING FAN SYSTEM

#82
20110259447
2011-10-27

Connector for fuel tank and check valve

#83
20110240159
2011-10-06

Hydrogen-Generating Fuel Cell Cartridges

#84
20110226352
2011-09-22

Flow control valve

#85
20110175010
2011-07-21

Valves

#86
20110129338
2011-06-02

Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water

#87
20110083280
2011-04-14

Pneumatic lift with unidirectional valve

#88
20110073191
2011-03-31

Hydraulic circuit and manifold with multifunction valve

#89
20110061751
2011-03-17

Tilting Disc Swing Check Valve

#90
20110041930
2011-02-24

Pressure relief valve

#91
20110017316
2011-01-27

Backflow preventing apparatus for water closets

#92
20100326544
2010-12-30

Shock responsive check valve

#93
20100294376
2010-11-25

Two-way actuator and method

#94
20100282340
2010-11-11

Compliant check valve stop

#95
20100276015
2010-11-04

Groundwater control system with automatic water flow regulator

#96
20100263744
2010-10-21

Flowline flapper valve

#97
20100263743
2010-10-21

Snap action valve with bumper pad

#98
20100255399
2010-10-07

Fuel cell ejector with integrated check valve

#99
20100254842
2010-10-07

Contoured check valve disc and scroll compressor incorporating same

#100
20100243083
2010-09-30

Pressure relief assembly

#101
20100163122
2010-07-01

Flow control valve

#102
20100108157
2010-05-06

Valve with electromechanical device for actuating the valve

#103
20100096035
2010-04-22

Negative pressure relief valve assembly

#104
20100096027
2010-04-22

CHECK VALVE AND PUMP INCLUDING CHECK VALVE

#105
20100092285
2010-04-15

Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water

#106
20100078083
2010-04-01

Low profile backwater valve

#107
20100032029
2010-02-11

Radial flow oscillating valve for reciprocating compressors and pumps

#108
20100018593
2010-01-28

CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS

#109
20090320495
2009-12-31

Fast acting aircraft engine bleed air check valve

#110
20090294715
2009-12-03

Centreline flow valve

#111
20090261125
2009-10-22

CONTAINER INCLUDING VALVE ASSEMBLY FOR STORING LIQUIDS CONTAINING SOLIDS

#112
20090257688
2009-10-15

One-way valve with flapper for vacuum bag

#113
20090242209
2009-10-01

Safety valve torsional spring assembly and method

#114
20090183788
2009-07-23

Regulator unit and method for regulating a flap opening of a flap situated in a mass flow line

#115
20090134083
2009-05-28

Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water

#116
20090081937
2009-03-26

Aircraft pressure management system

#117
20090071552
2009-03-19

Backflow preventing apparatus for water closets

#118
20090071551
2009-03-19

Living-hinge air vent valve

#119
20090056818
2009-03-05

CHECK VALVES WITH NOISE REDUCER

#120
20090032120
2009-02-05

CHECK VALVES WITH HINGE SHAFTS RETAINED BY LOCKING PINS

#121
20090032119
2009-02-05

Check valves with hinge shafts retained by welding

#122
20090032118
2009-02-05

CHECK VALVES WITH HINGE SHAFTS RETAINED BY BUSHINGS

#123
20090031722
2009-02-05

Multistage exhaust turbocharger

#124
20090023378
2009-01-22

Fan damper

#125
20080289696
2008-11-27

Check valve for fluid injector

#126
20080271792
2008-11-06

Water guide for dishwasher

#127
20080257426
2008-10-23

INTEGRAL HINGE

#128
20080245531
2008-10-09

Downhole deployment valves

#129
20080237521
2008-10-02

Multi-purpose exhaust valve spring

#130
20080236680
2008-10-02

Passive valve for attenuation of low frequency noise

#131
20080233462
2008-09-25

Hydrogen-generating fuel cell cartridges

#132
20080210431
2008-09-04

Flapper latch

#133
20080196775
2008-08-21

Valve flap for a plumbing valve

#134
20080190404
2008-08-14

Internal combustion engine having exhaust gas recirculation

#135
20080083464
2008-04-10

Check valve for vacuum sewage pipe and vacuum sewage system

#136
20080072974
2008-03-27

Engineered composite quiet check valve

#137
20080047610
2008-02-28

Electromagnetic split flapper pressure relief valve

#138
20070295672
2007-12-27

Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water

#139
20070267069
2007-11-22

Quickly opening hinged check valve with pre-determined upstream pressure required to open specification

#140
20070246218
2007-10-25

Safety valve having mono spring closure mechanism

#141
20070240771
2007-10-18

Self-riveting flapper valves

#142
20070235088
2007-10-11

Reinforced elastomeric hinge check valve

#143
20070215216
2007-09-20

CHECK VALVE MECHANISM FOR RODENTS AND/OR ODORS

#144
20070193260
2007-08-23

Throttle arrangement and exhaust system equipped with same

#145
20070158082
2007-07-12

System and method for cementing through a safety valve

#146
20070095406
2007-05-03

Side-mounted position indicator for flapper check valve

#147
20070028967
2007-02-08

Keyless fire hydrant protection system

#148
20070012365
2007-01-18

Fuel check valve

#149
20060266422
2006-11-30

Check valve with an improved clapper and valve seat

#150
20060199525
2006-09-07

Adjustable damper assembly

#151
20060179800
2006-08-17

Snap acting split flapper valve

#152
20060174952
2006-08-10

Hydrogen-generating fuel cell cartridges

#153
20060101723
2006-05-18

Rainwater collection and diverging system

#154
20060081292
2006-04-20

Quickly opening hinged check valve with pre-determined upstream pressure required to open

#155
20060065308
2006-03-30

Pressure relief door for air duct work

#156
20060054855
2006-03-16

Valve for inflatable objects

#157
20060042688
2006-03-02

Fluid flow regulator for swimming pool cleaning system

#158
20060026965
2006-02-09

Methods and apparatus for regulating airflow supply systems

#159
20050279405
2005-12-22

Flapper type fill tube check valve

#160
20050247349
2005-11-10

Low pressure check valve

#161
20050241683
2005-11-03

Water guide for dishwasher

#162
20050229978
2005-10-20

Check valve with pressure relief feature

#163
20050175490
2005-08-11

Check valve and pump including check valve

#164
20050166963
2005-08-04

Valve with electromechanical device for actuating the valve

#165
20050067601
2005-03-31

Valve closing device

#166
20050060795
2005-03-24

Flange valve

#167
20050039922
2005-02-24

Safety valve having extension spring closure mechanism

#168
17822586
2024-01-23

Clapper check valve assembly

#169
17166754
2022-10-18

System and apparatus for controlling fluid flow in drainage systems with a cage device