ClassID:

152242

F16K15/04 - CPC Classification

Classification description:

Check valves with guided rigid valve members shaped as balls

Sub-classes:
Recent Application in this class:
#1
20260047671
2026-02-19

CLEANING BRUSH

#2
20250383025
2025-12-18

RETRIEVABLE CHECK VALVE

#3
20250320932
2025-10-16

INDEXABLE PLUMBING SYSTEM

#4
20250314034
2025-10-09

VENTED PRECIPITATION GUARDING MANHOLE COVER ASSEMBLY

#5
20250207673
2025-06-26

DIRECTIONAL VALVE

#6
20250155037
2025-05-15

Combination Aeration, Deaeration, and Water Outlet Valve and Climate Chamber with Such Combination Aeration, Deaeration, and Water Outlet Valve

#7
20250122942
2025-04-17

FLUID CONTROL VALVE AND BALL HOLDER

#8
20250089879
2025-03-20

HYDRATION DELIVERY TUBE WITH CHECK VALVE

#9
20250052332
2025-02-13

AUTOMATIC FLUID-MECHANICAL ACTUATED EMERGENCY STOP VALVE FOR ABNORMAL FLOW AND SPILLAGE PROTECTION

#10
20250043876
2025-02-06

Assembly for Preventing a Backflow

#11
20250027383
2025-01-23

VALVE ASSEMBLY FOR DOWNHOLE PUMP OF RECIPROCATING PUMP SYSTEM

#12
20250020228
2025-01-16

DUAL AIR ADMITTANCE VALVE WITH LOCKING MECHANISM AND PRESSURE INDICATOR

#13
20240426391
2024-12-26

Magnetically tunable microfluidic check valve, microfluidic pumps, syringe pump, and methods of manufacturing thereof

#14
20240279997
2024-08-22

BALL CAGE INSERT WITH REDUCED WEAR, REDUCED PRESSURE DROP, AND ENHANCED PERFORMANCE CHARACTERISTICS

#15
20240227742
2024-07-11

TIRE-TO-TIRE INFLATION SYSTEM, APPARATUS, AND METHOD

#16
20240142009
2024-05-02

CHECK VALVE AND HYDRAULIC GEROTOR OR GEROLER MACHINE

#17
20240019037
2024-01-18

Hydraulic valve

#18
20230417334
2023-12-28

BALL FOR CHECK VALVES

#19
20230272866
2023-08-31

DUAL AIR ADMITTANCE VALVE WITH LOCKING MECHANISM AND PRESSURE INDICATOR

#20
20230272609
2023-08-31

Check Valve with Ventilation Device

#21
20230265845
2023-08-24

DIAPHRAGM PUMP WITH OFF-SET BALL CHECK VALVE AND ELBOW CAVITY

#22
20230265637
2023-08-24

VENTED PRECIPITATION GUARDING MANHOLE COVER ASSEMBLY

#23
20230220920
2023-07-13

Pilot stage with ball-conical seat

#24
20230203913
2023-06-29

Valve assembly for downhole pump of reciprocating pump system

#25
20230194010
2023-06-22

Automatic drain valve

#26
20230116352
2023-04-13

BI-DIRECTIONAL VALVE PUMP

#27
20220412475
2022-12-29

Geometrical influence on non-flow-facing closing-body regions

#28
20220290767
2022-09-15

NON-RETURN CHECK VALVE FOR VACUUM SYSTEM

#29
20220235875
2022-07-28

VALVE ASSEMBLY

#30
20220228669
2022-07-21

Pump for A System for Applying A Coating Product, and Use of Such A Pump

#31
20220228426
2022-07-21

Vacuum insulated glazing, valve, flexible seal, and method for making vacuum insulated glazing

#32
20220196170
2022-06-23

HYDRAULIC CONTROL UNIT VALVE PORTING, ROUTING, CHECKBALL, AND ORIFICE INTEGRATION WITH ADDITIVE MANUFACTURING

#33
20220155124
2022-05-19

Valve assembly for a dose filling machine having improved seal assemblies

#34
20220107035
2022-04-07

Valve plate with free micro-balls

#35
20220087403
2022-03-24

Hydration delivery tube with check valve

#36
20220049579
2022-02-17

Ball-type downhole valve

#37
20220025988
2022-01-27

Check valve, check valve mechanism, and hydraulic system

#38
20220025982
2022-01-27

Gas safety valve and gas supply line

#39
20210348692
2021-11-11

Dual air admittance valve with locking mechanism and pressure indicator

#40
20210270381
2021-09-02

Zero restriction ball valve insert, one-piece cage and assembly

#41
20210246992
2021-08-12

Drop-in insert for a valve cage of a pump

#42
20210215265
2021-07-15

Valve arrangement, in particular a reflux valve with a pressed-in ball holder

#43
20210214930
2021-07-15

DRAIN CONTROL INSECT ABATEMENT METHODS, DEVICES AND SYSTEMS

#44
20210108630
2021-04-15

Ball non-return valve and diaphragm pump

#45
20200408322
2020-12-31

Non-Return Valve for a Solenoid Valve and Associated Solenoid Valve

#46
20200393856
2020-12-17

Proportional flow control and counterbalance valve having single seat configuration

#47
20200368652
2020-11-26

NO FILTER NO RUN FLUID FILTRATION SYSTEM

#48
20200362667
2020-11-19

Use of a ball check valve on an outlet of an autonomous inflow control device

#49
20200362546
2020-11-19

Vacuum breaker with back flow preventer

#50
20200332905
2020-10-22

CARTRIDGE DEVICE

#51
20200290454
2020-09-17

Fuel tank safety valve

#52
20200284369
2020-09-10

Check valve ball stop having gasket compression stand off

#53
20200208503
2020-07-02

Low Pressure-Loss Valve for Rod-Operated Subsurface Pump

#54
20200158247
2020-05-21

Bi-directional valve pump

#55
20200141503
2020-05-07

Dual Air Admittance Valve with Locking Mechanism and Pressure Indicator

#56
20200133316
2020-04-30

Seal section check valve with protection tube

#57
20200132153
2020-04-30

Damping valve for a vibration damper

#58
20200122076
2020-04-23

Air cleaner having built-in valve and intake system thereof

#59
20200116267
2020-04-16

Check valve for a seafaring vessel

#60
20200102924
2020-04-02

Fuel pump and outlet valve thereof

#61
20200063878
2020-02-27

Check valve

#62
20200040799
2020-02-06

WATER PUMP

#63
20200025291
2020-01-23

Transmission torque converter

#64
20200011154
2020-01-09

Streamlined valve assembly for downhole pump of reciprocating pump system

#65
20190368622
2019-12-05

Check valve

#66
20190346054
2019-11-14

BALL CHECK VALVE

#67
20190346053
2019-11-14

Self-sealing backdraft damper

#68
20190323314
2019-10-24

Downhole tool with tethered ball

#69
20190293195
2019-09-26

Marine drain valve

#70
20190293194
2019-09-26

Riser valve manifold

#71
20190271415
2019-09-05

System and method for sealing wires, cables, pipes and drain holes through buffer

#72
20190186345
2019-06-20

Integrated passive one way valve in charge air inlet tank

#73
20190168044
2019-06-06

Control system for a fire-extinguishing installation, and safety device

#74
20190153812
2019-05-23

Bypass valve

#75
20190120397
2019-04-25

Check valve with nylon cage insert

#76
20180313369
2018-11-01

Submersible pneumatic pump with air-exclusion valve

#77
20180298895
2018-10-18

Piston ball guide for a ball pump

#78
20180291891
2018-10-11

Ball cage with directed flow paths for a ball pump

#79
20180274659
2018-09-27

Valve mechanism

#80
20180230900
2018-08-16

Check valve for connecting rod of variable compression internal combustion engine and connecting rod with the check valve

#81
20180221797
2018-08-09

No filter no run fluid filtration system

#82
20180214803
2018-08-02

NO FILTER NO RUN FEATURE FOR FILTER

#83
20180142683
2018-05-24

Pump connecting the inside and the outside of a product vessel

#84
20180105034
2018-04-19

Fuel tank safety valve

#85
20180100600
2018-04-12

Control valve unit

#86
20180073647
2018-03-15

Multiple valve refrigerant leak protection device

#87
20180072153
2018-03-15

FUEL TANK CHECK VALVE

#88
20180071762
2018-03-15

Refillable dispensing systems and components

#89
20180050313
2018-02-22

Device with an inlet suction valve and discharge suction valve for homogenizaing a liquid and method of using the same

#90
20180045302
2018-02-15

Hydraulic control system for a transmission

#91
20180031294
2018-02-01

Refrigerant system with liquid line to harvest line bypass

#92
20180030641
2018-02-01

Washing machine drainage structure

#93
20180020730
2018-01-25

Device for storing and vaporizing liquid

#94
20170356556
2017-12-14

One-way valve devices

#95
20170356331
2017-12-14

ELECTRIC COMPRESSOR

#96
20170350523
2017-12-07

Check valve mounting structure

#97
20170321724
2017-11-09

SUBMERSIBLE PNEUMATIC PUMP WITH AIR EXCLUSION VALVE

#98
20170298601
2017-10-19

Anti-air lock negative and/or vacuum pressure air admittance connector

#99
20170292506
2017-10-12

Paint sprayer pump cartridge

#100
20170284550
2017-10-05

Adjustable stop for check valve

#101
20170239527
2017-08-24

Balance exerciser for use at work

#102
20170233991
2017-08-17

Floor Drain Gas Stopper

#103
20170204988
2017-07-20

Reservoir Check Valve System

#104
20170189833
2017-07-06

PRP extraction kit

#105
20170175913
2017-06-22

Shock absorbing and wear resistant ball check seat for abrasive media

#106
20170152959
2017-06-01

Backwater valve assembly and method

#107
20170120274
2017-05-04

Refillable dispensing systems and components

#108
20170071287
2017-03-16

Sole of shoe having partially adjustable height depending on inclination

#109
20170059046
2017-03-02

Packing cylinder for expansion joint

#110
20170051483
2017-02-23

MANUALLY CLEANABLE DRAIN TRAP

#111
20170002951
2017-01-05

Magnetically actuatable valve device

#112
20160363015
2016-12-15

Oil separating module in the crankcase ventilation system of a combustion engine

#113
20160348471
2016-12-01

Fluid release valve

#114
20160319948
2016-11-03

Valve assembly for controlling flow direction of fluid based on rotation angle

#115
20160316850
2016-11-03

Slipper or sandal capable of being worn bi-directionally

#116
20160310971
2016-10-27

Valve for draining off gas from a centrifugal separator

#117
20160290447
2016-10-06

Chain tensioner and relief valve unit

#118
20160290229
2016-10-06

Auxiliary oil system for negative gravity event

#119
20160265673
2016-09-15

Check valve floor drain

#120
20160186873
2016-06-30

Ball check valve apparatus

#121
20160176387
2016-06-23

Pressure change damper for a hydraulic vehicle brake system with brake force control, and hydraulic vehicle brake system with brake force control with such a pressure change damper

#122
20160176285
2016-06-23

Fuel tank check valve

#123
20150354175
2015-12-10

Joystick pilot valve equipped with the structure for preventing oil leakage

#124
20150323087
2015-11-12

System, method and apparatus for combined ball segment valve and check valve

#125
20150285386
2015-10-08

Dual check valve and method of controlling flow through the same

#126
20150225132
2015-08-13

Fluid outlet system

#127
20150203343
2015-07-23

Filler device for a fluid tank

#128
20150122340
2015-05-07

Biased normally open check valve assembly

#129
20150101823
2015-04-16

Seat apparatus and method

#130
20150075637
2015-03-19

TRAVELING VALVE CAGE

#131
20150047721
2015-02-19

Uniform Gap Check Valve

#132
20150040868
2015-02-12

Check valve assembly

#133
20150029639
2015-01-29

Methods and apparatus related to a purge valve for a capacitor

#134
20140373797
2014-12-25

Non-return valve for an oil return in the crankcase ventilation system of a combustion engine

#135
20140367116
2014-12-18

Ball check valve integration to ICD

#136
20140366960
2014-12-18

Multi-functional valve device for expelling humidity and saturated steam for building structures

#137
20140326914
2014-11-06

VALVE

#138
20140246103
2014-09-04

Gas purging valve for fire protection system

#139
20140174575
2014-06-26

Wheatstone bridge check valve arrangement

#140
20140138098
2014-05-22

Seat apparatus and method

#141
20140137949
2014-05-22

Backflow preventer valve

#142
20140119952
2014-05-01

Pump and method for operating pump

#143
20140116540
2014-05-01

Backflow capable ball check valve

#144
20140083678
2014-03-27

BALL SEAT FOR A WELL FRACTURING APPARATUS AND METHOD OF MAKING AND USING SAME

#145
20140007954
2014-01-09

Check valve for well stimulation

#146
20130319798
2013-12-05

Auxiliary oil system for negative gravity event

#147
20130319548
2013-12-05

Automatic air evacuation appratus for swimming pool and spa filters

#148
20130240082
2013-09-19

Container arrangement and method for filling flexible disposable bags

#149
20130140479
2013-06-06

BALL SEATS HAVING SEAL INTERFACE ELEMENT FOR PROLONGING THE SEAL BETWEEN BALL AND SEAT IN CORROSIVE ENVIRONMENTS AND METHODS OF USING SAME

#150
20130068323
2013-03-21

Filter assembly

#151
20120222759
2012-09-06

NON-RETURN VALVE HAVING TWO CLOSING BODIES

#152
20120192904
2012-08-02

Siphon break apparatus configured to substantially prevent a siphon effect in a fluid conduit of a dishwasher and an associated method

#153
20120153207
2012-06-21

Valve for facilitating and maintaining separation of fluids and materials

#154
20120128533
2012-05-24

Liquid supply device using check valve and reactive liquid chromatography system

#155
20120063057
2012-03-15

Methods and apparatus related to a purge valve for a capacitor

#156
20120048401
2012-03-01

BALL CHECK VALVE

#157
20120042843
2012-02-23

Hydraulic lash adjuster for internal combustion engine

#158
20110303294
2011-12-15

BALL-SEAT APPARATUS AND METHOD

#159
20110255996
2011-10-20

INVERTED FLUID DISPENSING PUMP AND DISPENSING SYSTEM, AND METHOD OF USING AN INVERTED PUMP

#160
20110226818
2011-09-22

Check valve and shut-off reset device for liquid delivery systems

#161
20110225740
2011-09-22

Angle detection and control

#162
20110175001
2011-07-21

GRAVITY DRIVEN VALVE SWITCH

#163
20110108141
2011-05-12

Check ball valve assembly with check ball guide

#164
20110095217
2011-04-28

Solenoid valve unit

#165
20110061856
2011-03-17

Tubular seat and tubular actuating system

#166
20100326531
2010-12-30

Combination flow control valve and reverse flow check valve

#167
20100314126
2010-12-16

SEAT APPARATUS AND METHOD

#168
20100300343
2010-12-02

Check valve boat plug systems

#169
20100269928
2010-10-28

Valve cage for a pump

#170
20100263882
2010-10-21

SYSTEM AND METHOD FOR FIRE PROTECTION SYSTEM CORROSION MITIGATION

#171
20100206404
2010-08-19

BALL CHECK VALVE

#172
20100170152
2010-07-08

Maple spout with interior chamber and maple syrup production system using same

#173
20100078082
2010-04-01

Maple syrup production spout assembly with backflow check valve

#174
20100028174
2010-02-04

Check valve having integrally formed seat and seal body

#175
20100024774
2010-02-04

Check valve, and injector with hydraulic booster and check valve

#176
20100006604
2010-01-14

Lotion pump and one-way valve incorporated therein

#177
20090308614
2009-12-17

Coated extrudable ball seats

#178
20090283161
2009-11-19

Apparatus And Method For Administering Ingestible Liquids

#179
20090223574
2009-09-10

Backflow preventer valve

#180
20090223573
2009-09-10

FLUID OPERATED VALVE

#181
20090194729
2009-08-06

Discharge valve for downhole pumps

#182
20090166575
2009-07-02

Control valve with profiled packing element

#183
20090145496
2009-06-11

Non-return valve with a ball-shaped valve body

#184
20090104083
2009-04-23

Check valve, infusion device using the same, and method of manufacturing the same

#185
20090056816
2009-03-05

Check valve and shut-off reset device for liquid delivery systems

#186
20090038694
2009-02-12

Ball non-return valve

#187
20090000675
2009-01-01

Combined relief valve and check valve

#188
20080217565
2008-09-11

SUCKER ROD PUMP WITH IMPROVED BALL CONTAINMENT VALVE CAGE

#189
20080179560
2008-07-31

Sucker rod pump with improved ball and seat

#190
20080178948
2008-07-31

Safety Leaky Check Valve for Slow Bleed of Compressed Air

#191
20080099084
2008-05-01

Check valve having integrally formed seat and seal body

#192
20080099083
2008-05-01

Drain trap

#193
20080029161
2008-02-07

Backflow preventer valve

#194
20080023004
2008-01-31

Control valve

#195
20080020136
2008-01-24

Fluid control device for a high pressure analytical instrument

#196
20070267586
2007-11-22

Ceramic valve structure with slow-descending device

#197
20070264385
2007-11-15

Valve for controlling air flow in a molded article holder

#198
20070215217
2007-09-20

Outlet check valve

#199
20060201557
2006-09-14

Ball check valve

#200
20060192168
2006-08-31

Suction actuated gravity deactivated ball valve

#201
20060081293
2006-04-20

Control valve for backwash prevention

#202
20060042698
2006-03-02

Microfluidic check-valve embedded in LCP

#203
20060000511
2006-01-05

Flow control device and system

#204
20050279412
2005-12-22

Embedded microfluidic check-valve

#205
20050257927
2005-11-24

Valve cage insert

#206
20050161092
2005-07-28

Self-sealing one-piece vacuum fitting for bagging of composite materials

#207
20050133095
2005-06-23

Ball check for pressure test port

#208
20050115614
2005-06-02

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

#209
20050103384
2005-05-19

Non-return valve for a petrochemical reactor

#210
20050092373
2005-05-05

Fluid retaining apparatus with ball valve

#211
20050067024
2005-03-31

Reverse-flow throttle valve

#212
18405795
2025-02-04

Valve and related methods

#213
18387805
2025-04-22

Biogas digester check valve

#214
18053933
2024-02-27

Ball cage insert with reduced wear, reduced pressure drop, and enhanced performance characteristics

#215
17955374
2024-04-09

Guideless cage for downhole valve

#216
17644294
2022-12-27

Hollow design for controlled release of downhole sensors

#217
15648758
2018-09-25

Check valve floor drain

#218
14680592
2016-09-27

Modular backflow prevention system