ClassID:

152988

F16L21/03 - CPC Classification

Classification description:

Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection

Recent Application in this class:
#1
20260085771
2026-03-26

WHEEL LINE TRANSMISSION PIPE SYSTEM

#2
20260049679
2026-02-19

Pipe Gasket Including Annular Reinforcing/Stiffening Ring Encapsulated Within Flexible Gasket Body

#3
20250381654
2025-12-18

Gasket Installation Guide

#4
20250347367
2025-11-13

CONNECTOR AND CONNECTION STRUCTURE FOR MICRO FLUID DEVICE

#5
20250327543
2025-10-23

Click Fit Restrained Pipe Joining System For Plastic Pipe

#6
20250314337
2025-10-09

Restrained Wide Range Coupling System

#7
20250237333
2025-07-24

Solvent Free Jointing Method for Pressure Applications

#8
20250216008
2025-07-03

SEAL MEMBER AND PIPE JOINT USING THE SEAL MEMBER

#9
20250207697
2025-06-26

SUBSTRATE PROCESSING APPARATUS

#10
20250196301
2025-06-19

Gasket Installation Guide

#11
20250164046
2025-05-22

Pipe Joint Assemblies

#12
20250084937
2025-03-13

PIPE JOINT AND PIPE JOINING METHOD

#13
20250052348
2025-02-13

FLEXIBLE PIPE JOINT

#14
20240401727
2024-12-05

TWO-PHASE CONNECTOR

#15
20240360924
2024-10-31

PIPING COMPONENT AND SEALING ELEMENT FOR INSERTION THEREIN

#16
20240318751
2024-09-26

WIDE RANGE COUPLING

#17
20240200708
2024-06-20

PVC-O pipe

#18
20240165748
2024-05-23

Connecting part for a processing head for thermal material processing

#19
20240159333
2024-05-16

Segmented grip ring for plastic pipe joint restraint systems

#20
20240149002
2024-05-09

CONNECTOR AND SEAL USED THEREFOR AND ANESTHESIA MACHINE USING THE CONNECTOR

#21
20240077156
2024-03-07

BAR LINKAGE FOR FRICTION-FIT RANGE REDUCER

#22
20230415402
2023-12-28

RIEBER SEALING SYSTEM WITH PLASTIC RETAINER RING

#23
20230408006
2023-12-21

PRE-ASSEMBLED COUPLING ASSEMBLIES WITH PIPE FITTING

#24
20230400128
2023-12-14

PIPE JOINT, GLAND, AND METHOD FOR JOINING PIPES

#25
20230400127
2023-12-14

Integrated junction system for tubular fluid distribution elements

#26
20230304613
2023-09-28

Flexible pipe joint

#27
20230296196
2023-09-21

Piping connections and connection sockets

#28
20230167929
2023-06-01

Pipe coupling gasket assembly

#29
20230160504
2023-05-25

Integrated joining system in tubular fluid distribution elements

#30
20230151913
2023-05-18

Oil And Gas Pipe Connector

#31
20230135481
2023-05-04

CONNECTION DEVICE

#32
20230058593
2023-02-23

DEVICES, SYSTEMS, AND METHODS FOR A REDUCER WITH AN INTEGRATED SEAL

#33
20230039883
2023-02-09

MICROFLUIDIC CONNECTOR GROUP, MICROFLUIDIC DEVICE AND MANUFACTURING PROCESS THEREOF, IN PARTICULAR FOR A CARTRIDGE FOR SAMPLE PREPARATION AND MOLECULE ANALYSIS

#34
20230015663
2023-01-19

Hydraulic fitting, and applications thereof in robot systems

#35
20220373114
2022-11-24

Pipe Connector And An Assembly Of A Pipe Connector With At Least Two Pipes

#36
20220349505
2022-11-03

Pipe coupling

#37
20220299136
2022-09-22

Connecting means for connecting a pipe to a pipe section at an opening, such as, for example, a pipe section at a discharge opening, and a method for connecting a pipe using such connecting means

#38
20220278513
2022-09-01

360 DEGREE COUPLING

#39
20220221090
2022-07-14

Sealing gasket for ductile iron pipe and method of manufacture

#40
20220154860
2022-05-19

Conductive insert for gasket

#41
20220074534
2022-03-10

Pipe coupling seal assembly

#42
20220057031
2022-02-24

Sealing arrangement, sealing sleeve and use thereof

#43
20220003342
2022-01-06

Pipe seal, pipe assembly, and method for forming a pipe assembly and a seal

#44
20210404582
2021-12-30

Fluid line quick connector with spacer having angled surface(s)

#45
20210396335
2021-12-23

Sealing member for connecting pipes

#46
20210372545
2021-12-02

Pipe grip

#47
20210372544
2021-12-02

Wedged protrusion profile fitting seal systems and methods

#48
20210356059
2021-11-18

Grip lock fire sprinkler connector

#49
20210310590
2021-10-07

Installation fittings for use in domestic water supply pipe systems

#50
20210305643
2021-09-30

Robust interface for cooler to housing

#51
20210293361
2021-09-23

Pipe gasket seal assist

#52
20210278025
2021-09-09

Polymer pipe, a pipe joint insert device, a pipe joint assembly, and methods of forming same

#53
20210254766
2021-08-19

SEAL ASSEMBLY

#54
20210254764
2021-08-19

Wedged protrusion profile fitting seal systems and methods

#55
20210247003
2021-08-12

Piping component and sealing element for insertion therein

#56
20210231248
2021-07-29

Rigid entry fitting for flexible pipe

#57
20210215287
2021-07-15

POLYMER PIPE, A PIPE JOINT INSERT DEVICE, A PIPE JOINT ASSEMBLY, AND METHODS OF FORMING SAME

#58
20210190244
2021-06-24

Development of fuseal mechanical joint

#59
20210172550
2021-06-10

Boom air seal

#60
20210164594
2021-06-03

Pre-assembled coupling assemblies with pipe fitting

#61
20210123402
2021-04-29

Fastener assembly

#62
20210102647
2021-04-08

Wide range coupling

#63
20210095798
2021-04-01

Pipe joint, push ring for pipe joint, method for joining pipes

#64
20210080036
2021-03-18

Pre-assembled coupling assemblies with pipe fitting

#65
20210062945
2021-03-04

Coupling gasket and bar linkage for friction-fit range reducer

#66
20210052843
2021-02-25

Connector and seal used therefor and anesthesia machine using the connector

#67
20210048126
2021-02-18

Piping connections and connection sockets

#68
20210033226
2021-02-04

Swivel-capable, low-pressure-drop hose barb fittings

#69
20210018131
2021-01-21

Pipe coupling seal assembly

#70
20200395625
2020-12-17

Fluid connector system

#71
20200370687
2020-11-26

Pipe fittings

#72
20200354930
2020-11-12

Hydrant shoe assembly

#73
20200340368
2020-10-29

Dynamic sleeve seal fittings

#74
20200292109
2020-09-17

Sealing and restraint system for joining plastic pipe sections having pre-formed sockets

#75
20200263818
2020-08-20

Quick connect device for connecting tubular members

#76
20200256488
2020-08-13

Pipe Joint Restraint

#77
20200173586
2020-06-04

Sealing profile for embedding into a moulding of curable material

#78
20200132231
2020-04-30

Devices, systems, and methods for a reducer with an integrated seal

#79
20200124214
2020-04-23

Fluid duct

#80
20200109805
2020-04-09

Anti-dropping steel ring used in press-fitting type pipe fitting and fixing sealing device

#81
20200071915
2020-03-05

Hydrant shoe assembly

#82
20200032947
2020-01-30

Fluid transfer connector

#83
20200025316
2020-01-23

Pipe coupling with grooved coupling and grip ring

#84
20200011460
2020-01-09

Pipe fitting apparatus and methods

#85
20190383428
2019-12-19

Female nozzle of a connection enabling the insertion of a male nozzle with a reduced force

#86
20190338874
2019-11-07

Pipe joint with low insertion load, improved retention and increased high pressure sealing ability gasket and method of manufacture thereof

#87
20190331267
2019-10-31

Fitting Device for Joining Pipes and Rods

#88
20190323613
2019-10-24

Push-fit spigot

#89
20190316680
2019-10-17

Plug-in coupling seal for a fluid line of a drive motor

#90
20190309882
2019-10-10

Separation-resistant pipe joint with enhanced ease of assembly

#91
20190264845
2019-08-29

Coupling gasket with friction-fit range reducer

#92
20190264843
2019-08-29

Pipe coupling

#93
20190203859
2019-07-04

PIPE SPLICING ASSEMBLY

#94
20190201905
2019-07-04

Microfluidic connector group, microfluidic device and manufacturing process thereof, in particular for a cartridge for sample preparation and molecule analysis

#95
20190195401
2019-06-27

SEALING RING

#96
20190162341
2019-05-30

Anti-corrosion pipe system with adjustable length

#97
20190137016
2019-05-09

CONNECTING UNION JOINT WITH SMART CONNECTION OF EASY-FLOWING PIPE SYSTEM

#98
20190113165
2019-04-18

Rigid entry fitting for flexible pipe

#99
20190106884
2019-04-11

Wall mounted receiver

#100
20190072216
2019-03-07

Grooved joint adapter

#101
20190063645
2019-02-28

Pre-assembled coupling assemblies with pipe fitting

#102
20190040987
2019-02-07

Domestic appliance system with push-fit fluid coupling

#103
20190032825
2019-01-31

Pre-assembled coupling assemblies with pipe fitting

#104
20190032818
2019-01-31

Thin wall pipe and manufacturing process

#105
20190027765
2019-01-24

FUELCONNECTOR SYSTEM

#106
20190017636
2019-01-17

Wide range coupling

#107
20190011066
2019-01-10

Swivel joint for oilfield pumping stimulation

#108
20180363815
2018-12-20

Oil and gas pipe connector

#109
20180313480
2018-11-01

Enhanced end design for tubular press connections

#110
20180313479
2018-11-01

COUPLING SYSTEM AND A METHOD FOR COUPLING TWO PIPE ENDS

#111
20180313478
2018-11-01

Piping connections and connection sockets

#112
20180313475
2018-11-01

High temperature leak prevention for piping components and connections

#113
20180292033
2018-10-11

Sealing material and joint

#114
20180266594
2018-09-20

Jumper tube connector

#115
20180259101
2018-09-13

Pipe connection device and manufacturing method thereof

#116
20180245727
2018-08-30

Sealing joint for low pressure pipe systems and method of manufacture

#117
20180233892
2018-08-16

Raintight fitting for jacketed metal clad cables

#118
20180187810
2018-07-05

SYSTEM, METHOD AND APPARATUS FOR TOOL-LESS, PRE-ASSEMBLED RESTRAINED JOINT FOR PIPE

#119
20180180203
2018-06-28

System, method and apparatus for expansion coupling for pipes

#120
20180180202
2018-06-28

PIPE FITTING

#121
20180149294
2018-05-31

Releasable, threadless conduit connector for liquid manifold

#122
20180128152
2018-05-10

Exhaust sealing joint

#123
20180094754
2018-04-05

Sealing gasket with corrugated insert for sealing restrained or non-restrained plastic pipelines

#124
20180090919
2018-03-29

Integrated piping conduit with adaptor device and method

#125
20180080587
2018-03-22

Fluid couplings, systems, and methods

#126
20180031157
2018-02-01

Restrained plastic pipe joint and method of making same

#127
20180023733
2018-01-25

PIPE ADAPTER

#128
20180017194
2018-01-18

Composite seal for rapid fluid-transfer coupling, and coupling of this type

#129
20170370511
2017-12-28

Fluid couplings, systems, and methods

#130
20170328503
2017-11-16

Restrained plastic pipe joint and method of making same

#131
20170321830
2017-11-09

Control device for the coolant flow in a cooling circuit of an internal combustion engine

#132
20170261139
2017-09-14

Female element for a fluid coupling and fluid coupling including such an element

#133
20170248257
2017-08-31

Fitting with Removable Dip Tube

#134
20170198855
2017-07-13

INTRINSICALLY CONDUCT JOINT FOR METALLIC PIPE AND METHOD OF USING THE SAME

#135
20170198847
2017-07-13

System, method and apparatus for low profile seal

#136
20170184230
2017-06-29

Method of manufacturing a unitary gasket using two rubber materials of different hardness

#137
20170184229
2017-06-29

Pipe joint with low insertion load, improved retention and increased high pressure sealing ability gasket and method of manufacture thereof

#138
20170151699
2017-06-01

Air duct cuff and method of manufacture

#139
20170151698
2017-06-01

Air duct cuff and method of manufacture

#140
20170146171
2017-05-25

Coupling seal having ramp surfaces

#141
20170146170
2017-05-25

Sprung Seal Retainer

#142
20170146145
2017-05-25

Valve and valve coupling with reverse tapered shafts

#143
20170146143
2017-05-25

Valve coupling having centering support projections

#144
20170122469
2017-05-04

Press fitting and joint assembly with such a press fitting

#145
20170114933
2017-04-27

Pipe joint gasket and method of making same

#146
20170085068
2017-03-23

Conduit receivers

#147
20170082230
2017-03-23

Low-Leak Hydraulic Connectors

#148
20170030491
2017-02-02

Wall mounted receiver

#149
20160334035
2016-11-17

Separation preventive pipe joint and pipeline constituent member

#150
20160326745
2016-11-10

Wall mounted receiver

#151
20160319969
2016-11-03

Seal holding device for pipe clamp

#152
20160298797
2016-10-13

Separation-resistant pipe joint

#153
20160290541
2016-10-06

Lightweight quick connector system

#154
20160273688
2016-09-22

Quick Connector for Hydraulic Hose Coupling

#155
20160245436
2016-08-25

Secured in place gasket for sealing plastic pipelines, method of manufacture and method of installation

#156
20160223109
2016-08-04

Seal for belled pipe

#157
20160208964
2016-07-21

Pipe coupling capsulation assembly

#158
20160201830
2016-07-14

BEAD SEAL AND CONNECTION DEVICE COMPRISING SUCH A SEAL

#159
20160178099
2016-06-23

SWIVEL JOINT FOR PIPES

#160
20160161035
2016-06-09

Fluid connector with a swivel body

#161
20160153597
2016-06-02

Aircraft fuel line couplings in compliance with survivable crash and lightning strike requirements

#162
20160153596
2016-06-02

Swivel joint for oilfield pumping stimulation

#163
20160138740
2016-05-19

Pipe clamp assembly with stiffening element

#164
20160116089
2016-04-28

DRYER DOCKING STATION

#165
20160102792
2016-04-14

Pipe joint

#166
20160102790
2016-04-14

Pipe joint

#167
20160076682
2016-03-17

Method of joining pipes and fittings

#168
20160061366
2016-03-03

Fluid line connection for an agricultural air seeder

#169
20160061364
2016-03-03

Releasable, threadless conduit connector for liquid manifold

#170
20160061363
2016-03-03

Fluid-conducting connection with clamping ring

#171
20160059367
2016-03-03

Releasable, threadless conduit connector for liquid manifold

#172
20160053925
2016-02-25

Structure for attaching pressure detector

#173
20160040812
2016-02-11

Quick Connector Structure for a Pipe

#174
20160040808
2016-02-11

Vacuum Connector

#175
20160033068
2016-02-04

Bayonet coupling assembly

#176
20160025253
2016-01-28

Piping conduit adaptor device

#177
20160025252
2016-01-28

QUICK FITTING CONNECTOR

#178
20160003395
2016-01-07

MECHANICAL PIPE JOINT

#179
20160003389
2016-01-07

Expansion joint and compression system

#180
20150377397
2015-12-31

Manual connection for connecting two fluid ducts

#181
20150369407
2015-12-24

Air aspiration device

#182
20150369405
2015-12-24

Slip on groove coupling with multiple sealing gasket

#183
20150362098
2015-12-17

Refrigeration line set fitting and method of using the same to join refrigeration lines to each other

#184
20150354738
2015-12-10

Conduit receivers

#185
20150338004
2015-11-26

Quick-connect tube coupling

#186
20150337999
2015-11-26

Process for Manuafacturing Sealed Round Metal Ductwork

#187
20150330544
2015-11-19

Duct coupler for post-tensioned concrete member

#188
20150330543
2015-11-19

Pipe fitting

#189
20150323112
2015-11-12

Push-Fit Pipe Couplings

#190
20150316184
2015-11-05

ASSEMBLY WITH SEPARATELY TIGHTENABLE ANNULAR CLAMPS

#191
20150308595
2015-10-29

Connector assembly for connecting pipes

#192
20150300541
2015-10-22

Coupling connection for corrugated pipes

#193
20150292657
2015-10-15

Coupling for joining ductile iron and plastic pipes

#194
20150292656
2015-10-15

Pressing ring, joint, and valve

#195
20150276099
2015-10-01

PIPE CONNECTOR APPARATUS

#196
20150275587
2015-10-01

Non-threaded tubular connection

#197
20150252930
2015-09-10

MAGNETIC CONNECTOR FOR A VAPORIZER

#198
20150240980
2015-08-27

Clam shell push-to-connect assembly

#199
20150240978
2015-08-27

Quick connector

#200
20150233506
2015-08-20

Clamp for connecting pipe and device for connecting pipe including the same

#201
20150233505
2015-08-20

Engine fluid line with flexible joint

#202
20150219261
2015-08-06

Air duct cuff and method of manufacture

#203
20150219256
2015-08-06

Coupling with uniform circumferential tightening

#204
20150211664
2015-07-30

Slip on groove coupling with multiple sealing gasket

#205
20150204469
2015-07-23

Retaining catch for a socket pipe connection

#206
20150159794
2015-06-11

Push-to-connect fitting

#207
20150152990
2015-06-04

Pipe seal

#208
20150115595
2015-04-30

Coupling unit, coupling device, motor vehicle and method

#209
20150059868
2015-03-05

Hose attachment device for clearing drain lines

#210
20140374995
2014-12-25

Secured in place gasket for sealing plastic pipelines, method of manufacture and method of installation

#211
20140374417
2014-12-25

Filling port structure for pressure fluid

#212
20140339773
2014-11-20

Gasket for parabolic ramp self restraining bell joint

#213
20140265303
2014-09-18

Combination glue hub and mechanical coupler for pipe fittings

#214
20140217726
2014-08-07

Pipe coupling assembly

#215
20140203554
2014-07-24

Pipe joint

#216
20140203516
2014-07-24

Seal having stress control groove

#217
20140076413
2014-03-20

Slip on groove coupling with multiple sealing gasket

#218
20140035282
2014-02-06

Pipe joint

#219
20140021719
2014-01-23

Press fitting and joint assembly with such a press fitting

#220
20130328305
2013-12-12

SEAL HOLDING DEVICE FOR PIPE CLAMP

#221
20130313784
2013-11-28

Gasket for parabolic ramp self restraining bell joint

#222
20130229010
2013-09-05

ASSEMBLY WITH SEALING GASKETS HAVING LOCKING INSERTS

#223
20130192046
2013-08-01

FLUID DISTRIBUTION MANIFOLD

#224
20130187380
2013-07-25

Push-on Tubing Coupler with Triple Seal and Adapter

#225
20130112283
2013-05-09

Vacuum Connector

#226
20130093181
2013-04-18

Stacked washer slip joint seal

#227
20130001821
2013-01-03

Composite sealing gasket and process for belling plastic pipe

#228
20120299293
2012-11-29

ASSEMBLY WITH SEPARATELY TIGHTENABLE ANNULAR CLAMPS

#229
20120280497
2012-11-08

Gasket for parabolic ramp self restraining bell joint

#230
20120280494
2012-11-08

Slip on groove coupling with multiple sealing gasket

#231
20120211119
2012-08-23

Pipe section joining

#232
20120175848
2012-07-12

TWO SHOT POLYMER BASED SLEEVE FOR JOINING PVC PIPE SECTIONS UTILIZING A RIEBER TYPE PROCESS

#233
20120124804
2012-05-24

Slip on groove coupling with multiple sealing gasket

#234
20120086175
2012-04-12

Method and apparatus for piston-actuated elastomer probe seal in a hydraulic coupling member

#235
20120049409
2012-03-01

Method for manufacturing a gasket with an encapsulated metal band

#236
20110278835
2011-11-17

Pipe joint

#237
20110272888
2011-11-10

Slip joint with clamp

#238
20110271515
2011-11-10

Two part coupling connected by a clip

#239
20110258852
2011-10-27

Process for manufacturing sealed round metal ductwork

#240
20110240143
2011-10-06

Air aspiration device

#241
20110220238
2011-09-15

Pipe with integral male and female ends, a joint made using the same pipe, and processes of making the pipe and the joint

#242
20110156362
2011-06-30

Multi-combed Self-pressurizing Pipe Coupling Seal

#243
20110148106
2011-06-23

Pipe coupling

#244
20110095520
2011-04-28

PIPE COUPLING WITH SEAL PRESSING DEVICE

#245
20110056581
2011-03-10

CONSTRUCTION INDUSTRY PIPE FOR CONDUCTING FLUID MEDIUM HAVING RIGID SECTIONS ALTERNATING WITH FLEXIBLE SECTIONS

#246
20100289256
2010-11-18

Pipe insertion indicator and method of use

#247
20100269956
2010-10-28

GAS SUPPLY STRUCTURE

#248
20100244441
2010-09-30

Method and apparatus for preventing overinsertion in plastic pipe systems

#249
20100225111
2010-09-09

GASKET FOR BELL SOCKET

#250
20100123312
2010-05-20

RETROFIT ARRANGEMENT FOR PULSE JET DUST COLLECTORS

#251
20100102556
2010-04-29

Pipe stop system and method to prevent over insertion

#252
20100102038
2010-04-29

External corrosion protection for underground pipes

#253
20100078937
2010-04-01

Self Restrained Ductile Iron Fitting

#254
20100059940
2010-03-11

Composite Sealing Gasket and Process for Belling Plastic Pipe

#255
20100024907
2010-02-04

Subsea coupling

#256
20100012069
2010-01-21

SEALING SYSTEM

#257
20100001521
2010-01-07

Slip on groove coupling with multiple sealing gasket

#258
20090321092
2009-12-31

FIRE FIGHTING DEVICE WITH WATERWAY

#259
20090315276
2009-12-24

Method and apparatus for piston-actuated elastomer probe seal in a hydraulic coupling member

#260
20090295153
2009-12-03

Pipe coupling assembly

#261
20090295102
2009-12-03

Formed in place over-mold seal

#262
20090261534
2009-10-22

SEALING GASKET AND USES OF SUCH A GASKET

#263
20090174182
2009-07-09

Fluid conduits with integral end fittings and associated methods of manufacture and use

#264
20090173130
2009-07-09

Fluid conduits with integral end fittings and associated methods of manufacture and use

#265
20090152866
2009-06-18

Spigot-and-socket joint

#266
20090146419
2009-06-11

Sealing Ring

#267
20090127849
2009-05-21

Pipe fixing system and pipe fastening device

#268
20080303276
2008-12-11

Sealing mechanism for ductwork

#269
20080284166
2008-11-20

Ductile iron pressure fit gasket

#270
20080258460
2008-10-23

Coupling for a fluid line arrangement

#271
20080258407
2008-10-23

Volumetric sealing system

#272
20080217912
2008-09-11

Coupling

#273
20080197628
2008-08-21

Beveled insert for facilitating coupling pipes

#274
20080191466
2008-08-14

Fluid connector

#275
20080111319
2008-05-15

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Two-piece fitting and gasket assembly

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MODIFIED TRANSITION ANGLE IN BELLED PIPE

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Beveled insert for facilitating coupling pipes

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METHOD AND APPARATUS FOR PREVENTING OVERINSERTION IN PLASTIC PIPE SYSTEMS

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Coupling, joint and method for fixedly and sealingly securing components to one another

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Method of corrosion protection at a welded pipe joint and resulting joint

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Cast-in-place gasket for pipe joints

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Snap fit sealing gasket with precisely located internal retainer ring for triangular pipe grooves

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Two-part gasket for pipe-to-pipe connections

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Snap fit sealing gasket with precisely located internal retainer ring for square pipe grooves

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Pipe gasket with selective economy of scale

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Snap in place gasket installation method

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Pipe fitting with composite gasket assembly

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Gasket

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Concrete pipe with a corrosion-resistant inner lining

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Corrugated plastic pipe sections having flanged ends and structurally tight joints thereof

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Sealing system for pipelines

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Seal retainer with pressure energized metal seal members for undersea hydraulic coupling

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Pipe joint for refrigeration cycle having combination of O-ring and backup ring