ClassID:

143015

F04B39/125 - CPC Classification

Classification description:

Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups -; Casings; Cylinders; Cylinder heads; Fluid connections Cylinder heads

Recent Application in this class:
#1
20260102557
2026-04-16

PUMP MECHANISM WITH DOUBLE RESERVOIR AND STATIONARY FLUID PORTS

#2
20260049605
2026-02-19

AIR COMPRESSOR

#3
20250376978
2025-12-11

AIR COMPRESSOR FOR A VEHICLE AIR BRAKING SYSTEM

#4
20250237308
2025-07-24

SELF-LOCKING PLUG

#5
20250237208
2025-07-24

AIR COMPRESSOR STRUCTURE

#6
20250146483
2025-05-08

RECIPROCATING COMPRESSOR WITH NON-SELF-ACTUATED SUCTION VALVE

#7
20250084839
2025-03-13

REDUCED HEAT EXCHANGE RECIPROCATING COMPRESSOR

#8
20240287947
2024-08-29

AIR COMPRESSOR CYLINDER HEAD AND AIR COMPRESSOR

#9
20240125309
2024-04-18

HYDRAULIC FLUID PUMP AND RETAINER ASSEMBLY FOR SAME

#10
20240042126
2024-02-08

PUMP MECHANISM WITH DOUBLE RESERVOIR AND STATIONARY FLUID PORTS

#11
20230332597
2023-10-19

Oil feeder and linear compressor including the same

#12
20230220841
2023-07-13

Reciprocal compressor and refrigerator including the same

#13
20230057129
2023-02-23

Alternative compressor head arrangement

#14
20230048353
2023-02-16

Air compressor with ramped head deck

#15
20230034730
2023-02-02

MULTI-CYLINDER RECIPROCATING COMPRESSOR

#16
20230031688
2023-02-02

HERMETICALLY ENCAPSULATED REFRIGERANT COMPRESSOR

#17
20230026533
2023-01-26

RECIPROCATING COMPRESSOR CYLINDER COVER

#18
20220412338
2022-12-29

PERSONAL AIR SAMPLING PUMP ASSEMBLY

#19
20220389920
2022-12-08

High Volume, Low Pressure Oilless Pump

#20
20220389918
2022-12-08

Compressor

#21
20220364554
2022-11-17

PORTABLE PUMP

#22
20220333591
2022-10-20

Piston of air compressor

#23
20220333590
2022-10-20

Air compressor

#24
20220333588
2022-10-20

Piston of air compressor

#25
20220243712
2022-08-04

Connecting structure, exhaust silencer, silencer, and compressor

#26
20220170450
2022-06-02

Linear compressor

#27
20220163033
2022-05-26

Valve stop and suction cover platformed assembly

#28
20220120265
2022-04-21

CYLINDER HEAD FOR PISTON COMPRESSOR

#29
20220074395
2022-03-10

Swash plate compressor

#30
20220065241
2022-03-03

Discharge cut-off valve

#31
20220003225
2022-01-06

FAST INFLATING AIR PUMP

#32
20210404455
2021-12-30

Multi-stage compressor

#33
20210404453
2021-12-30

Hydraulic fluid pump and retainer assembly for same

#34
20210388828
2021-12-16

Single piece valve plate assembly for a reciprocating compressor, the valve plate assembly including a valve plate and a suction valve retainer that are integrally formed as a unitary body

#35
20210356175
2021-11-18

Reciprocating-type compressor for refrigeration and/or conditioning and/or heat pump system

#36
20210310472
2021-10-07

COMPRESSOR AND ELECTRONIC DEVICE USING THE SAME

#37
20210262460
2021-08-26

Inflatable pump

#38
20210215148
2021-07-15

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

#39
20210215127
2021-07-15

METHOD FOR MANUFACTURING ASSEMBLY, PARTS SET, METHOD FOR MANUFACTURING FUEL INJECTION PUMP, AND FUEL INJECTION PUMP

#40
20210180582
2021-06-17

CYLINDER HEAD FOR A COMPRESSOR

#41
20210123427
2021-04-29

Plate fin heat exchanger for pump assembly

#42
20210108627
2021-04-15

Hermetic compressor having discharge muffler

#43
20210102535
2021-04-08

Horizontal gas compressor with free lifting piston

#44
20210054833
2021-02-25

Linear compressor

#45
20200392955
2020-12-17

Personal air sampling pump assembly with diaphragm damping portion

#46
20200291928
2020-09-17

Hydraulic fluid pump and retainer assembly for same

#47
20200240403
2020-07-30

Reciprocating piston machine with cooling device

#48
20190376501
2019-12-12

Cylinder head assembly for reciprocating compressor

#49
20190368482
2019-12-05

Reciprocating compressor

#50
20190360479
2019-11-28

Linear compressor

#51
20190309743
2019-10-10

Linear compressor

#52
20190309742
2019-10-10

Linear compressor

#53
20190277540
2019-09-12

Cylinder head cover for a refrigerant compressor

#54
20190277221
2019-09-12

Thermally compensated bore guide systems and methods

#55
20190264673
2019-08-29

Roll diaphragm compressor and low-pressure vapor compression cycles

#56
20190257296
2019-08-22

Method to set-up a volumetric dosage pump in operating position

#57
20190234392
2019-08-01

Semi-Hermetic Refrigerant Compressor

#58
20190219046
2019-07-18

Introduced in a system for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors, and corresponding process of performing thereof

#59
20190170131
2019-06-06

Intake pulsation damper of swash plate-type compressor

#60
20190154022
2019-05-23

Compressor

#61
20190120216
2019-04-25

Electric-driven air pump

#62
20190107312
2019-04-11

Linear compressor with heat shield between discharge cover and frame

#63
20190093650
2019-03-28

Reciprocating type compressor

#64
20190093649
2019-03-28

Reciprocating type compressor

#65
20190040855
2019-02-07

Compressor having an energy saving apparatus, and method for relieving the compressor

#66
20190024652
2019-01-24

Compressor valve arrangement

#67
20190010938
2019-01-10

Small air compressor

#68
20190003475
2019-01-03

Mechanism for restraining fuel pressure pulsation and high pressure fuel supply pump of internal combustion engine with such mechanism

#69
20190003468
2019-01-03

Portable pump

#70
20180372087
2018-12-27

Piston Compressor Having a Venting Device

#71
20180372082
2018-12-27

Linear compressor

#72
20180354081
2018-12-13

Fluid end and method of manufacturing it

#73
20180291892
2018-10-11

Discharge valve keeper and plunger cover for high pressure pumps

#74
20180291890
2018-10-11

INTEGRATED MUFFLER ASSEMBLY

#75
20180291885
2018-10-11

VALVE PLATE AND HEAD COVER ASSEMBLY

#76
20180291884
2018-10-11

Reciprocating compressor

#77
20180238316
2018-08-23

Cylinder head for compressor

#78
20180230993
2018-08-16

Ceramic pump and casting therefor

#79
20180198358
2018-07-12

Moveable core-type reciprocating motor and reciprocating compressor having a moveable core-type reciprocating motor

#80
20180195504
2018-07-12

Linear compressor

#81
20180128254
2018-05-10

Economized reciprocating compressor

#82
20170356441
2017-12-14

Reciprocating compressor valves arrangement

#83
20170356437
2017-12-14

Head fastening arrangement of cooling compressor

#84
20170356434
2017-12-14

System for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors and process thereof

#85
20170335837
2017-11-23

Connector for a compressor assembly

#86
20170321693
2017-11-09

Compressor head assembly with discharge valve

#87
20170321692
2017-11-09

Linear compressor

#88
20170321691
2017-11-09

FLUID END OF A HIGH PRESSURE PLUNGER PUMP

#89
20170321679
2017-11-09

Single piece valve plate assembly for a reciprocating compressor

#90
20170321678
2017-11-09

Cylinder head assembly for a reciprocating compressor including a cylinder head with an integral valve plate

#91
20170321677
2017-11-09

Linear compressor having discharge valve, support with rotation prevention protrusions, and discharge cover with protrusion accommodation grooves

#92
20170292508
2017-10-12

VALVE UNIT FOR A PISTON COMPRESSOR AND PISTON COMPRESSOR

#93
20170254322
2017-09-07

AIR COMPRESSOR MADE OF A LIGHT METAL

#94
20170248132
2017-08-31

Air compressor

#95
20170211565
2017-07-27

Pump fluid end assembly mounting system

#96
20170204844
2017-07-20

Air compressor

#97
20170204843
2017-07-20

Air compressor

#98
20170204841
2017-07-20

Linear compressor

#99
20170122302
2017-05-04

Cylinder head assembly for reciprocating compressor

#100
20170089330
2017-03-30

AIR COMPRESSOR CORE

#101
20170074259
2017-03-16

Compressor piston shape to reduce clearance volume

#102
20170022985
2017-01-26

Personal air sampling pump assembly

#103
20170016435
2017-01-19

Reciprocating compressor and hydrogen supply system

#104
20160348663
2016-12-01

MICRO COMPRESSOR

#105
20160305422
2016-10-20

Valve connector for integral high pressure cylinder unloader valve

#106
20160305420
2016-10-20

METHOD FOR CONTROLLING KNOCKING IN A PISTON COMPRESSOR

#107
20160305414
2016-10-20

Railway vehicle air compressor with integral high pressure cylinder unloader valve

#108
20160281701
2016-09-29

Method and equipment for improving the efficiency of compressors and refrigerators

#109
20160258432
2016-09-08

Fluid end of a high pressure plunger pump

#110
20160258431
2016-09-08

Air compressor

#111
20160250902
2016-09-01

DEVICE FOR CONTROLLING THE PRESSURE IN A VEHICLE TYRE

#112
20160245278
2016-08-25

Reciprocating compressor with vapor injection system

#113
20160245274
2016-08-25

Reciprocating compressor, compression section unit, and maintenance method of reciprocating compressor

#114
20160238000
2016-08-18

Air inlet control for air compressor

#115
20160237996
2016-08-18

Air compressor

#116
20160201666
2016-07-14

PRESSURIZING BOOSTER COMPRESSOR

#117
20160177936
2016-06-23

System and method for reducing at least one of airflow turbulence and pressure fluctuation proximate a valve

#118
20160153446
2016-06-02

LINEAR COMPRESSOR FOR A DOMESTIC APPLIANCE AND DOMESTIC REFRIGERATION APPLIANCE

#119
20160146199
2016-05-26

Cryogenic pump with insulating arrangement

#120
20160102661
2016-04-14

Air compressor

#121
20160097383
2016-04-07

Air compressor

#122
20160097379
2016-04-07

Air compressor

#123
20160053891
2016-02-25

COMPRESSOR HEAD AND GASKET FOR SAME

#124
20160017876
2016-01-21

Discharge valve cover for a linear compressor having a valve spring stopper and discharge pulsation reducing chambers

#125
20150354551
2015-12-10

Fluid machine

#126
20150285236
2015-10-08

Air compressor

#127
20150275884
2015-10-01

Gas discharge system for a refrigeration compressor and a refrigeration compressor

#128
20150275883
2015-10-01

Thermal insulation system for the discharge of gas in a refrigeration compressor

#129
20150167663
2015-06-18

Compressor for a vehicle air supply system

#130
20140363322
2014-12-11

Cylinder cover for alternative compressor

#131
20140338526
2014-11-20

Variable-volume head

#132
20140328699
2014-11-06

Piston pump for a high-pressure cleaning appliance

#133
20140322043
2014-10-30

Reciprocating compressor

#134
20140322040
2014-10-30

Muffler for compressor and compressor having the same

#135
20140301876
2014-10-09

Piston pump having a holder

#136
20140234131
2014-08-21

Pressure monitoring device for controlling a compressor

#137
20140208938
2014-07-31

Cylinder head for a two-stage reciprocating piston compressor

#138
20140147300
2014-05-29

Rocking piston compressor with sound dissipation

#139
20140134025
2014-05-15

Air compressor having enlarged compartment for receiving pressurized air

#140
20140134022
2014-05-15

Cylinder head for a piston compressor

#141
20140086774
2014-03-27

FLUID END OF A HIGH PRESSURE PLUNGER PUMP HAVING A GROOVE ADAPTED TO RECEIVE A SPRING RETAINER OF A SUCTION VALVE

#142
20130259713
2013-10-03

Swash plate type compressor

#143
20130195699
2013-08-01

Connection plate for a hydrostatic piston machine

#144
20130092023
2013-04-18

Compressors with improved sealing assemblies

#145
20130092019
2013-04-18

Cylinder head for a compressor

#146
20130087040
2013-04-11

Cylinder housing, in particular pump cylinder housing

#147
20130058816
2013-03-07

RECIPROCATING COMPRESSOR

#148
20120294746
2012-11-22

CYLINDER HEAD FOR A PUMP

#149
20120107158
2012-05-03

Sealed compressor with multiple compressor unit

#150
20120090461
2012-04-19

Compressor cylinder block and cylinder head distortion prevention

#151
20120063937
2012-03-15

Suction arrangement for a hermetic refrigeration compressor

#152
20120036995
2012-02-16

Overmolded diaphragm pump

#153
20120023973
2012-02-02

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

#154
20120006191
2012-01-12

AIR OR GAS COMPRESSION SYSTEM

#155
20110217189
2011-09-08

REFRIGERANT COMPRESSOR

#156
20110176942
2011-07-21

SEALED COMPRESSOR

#157
20110164991
2011-07-07

LINEAR COMPRESSOR

#158
20110142701
2011-06-16

Pump with a Sculptured Fluid End Housing

#159
20110020144
2011-01-27

VARIABLE-VOLUME HEAD

#160
20110005266
2011-01-13

Reciprocating piston compressor

#161
20100310389
2010-12-09

SYSTEM FOR ATTENUATING PULSATION IN THE GAS DISCHARGE OF A REFRIGERATION COMPRESSOR

#162
20100290939
2010-11-18

Refrigerant compressor

#163
20100290926
2010-11-18

CYLINDER HEAD FOR PISTON REFRIGERATION COMPRESSOR, COMPRESSION UNIT INCLUDING SUCH CYLINDER HEAD, AND PISTON REFRIGERATION COMPRESSOR INCLUDING SAID COMPRESSION UNIT

#164
20100158727
2010-06-24

Suction Port Lock Nut With Stub Buttress Threads

#165
20100037685
2010-02-18

Non obstructive pressure differential valve

#166
20100037643
2010-02-18

VEHICULAR REFRIGERATING CYCLE

#167
20090301293
2009-12-10

Compressor

#168
20090288639
2009-11-26

Mechanism for restraining fuel pressure pulsation and high pressure fuel supply pump of internal combustion engine with such mechanism

#169
20090274569
2009-11-05

Piston compressor

#170
20090238698
2009-09-24

Reciprocal Compressor

#171
20090232686
2009-09-17

Integrated catalyst

#172
20090214367
2009-08-27

Refrigerant Compressor

#173
20090178553
2009-07-16

COMPRESSOR

#174
20090175743
2009-07-09

Compressor and manufacturing method of the same

#175
20090155114
2009-06-18

COMPRESSOR STRUCTURE FOR A REFRIGERATION SYSTEM

#176
20090136366
2009-05-28

Compressor

#177
20090136365
2009-05-28

Refrigerant Compressor

#178
20090110567
2009-04-30

Air Compressor

#179
20090104052
2009-04-23

Pump

#180
20090068029
2009-03-12

Refrigerant Compressor

#181
20090064961
2009-03-12

Reciprocating piston cylinder head cover having an integrated fluid exchange rotary disc valve

#182
20080317611
2008-12-25

Adapter plate in a pump of a beverage system

#183
20080310977
2008-12-18

Compact Compressor

#184
20080260561
2008-10-23

Hermetic compressor with internal thermal insulation

#185
20080240950
2008-10-02

Connecting rod for a linear compressor

#186
20080240940
2008-10-02

Compressor improvements

#187
20080206069
2008-08-28

Method for prevention/detection of mechanical overload in a reciprocating gas compressor

#188
20080159881
2008-07-03

Suction system for a refrigeration compressor

#189
20080152514
2008-06-26

Small Refrigerant Compressor

#190
20080107546
2008-05-08

Refrigerant Compressor

#191
20080080995
2008-04-03

RECIPROCATING COMPRESSOR

#192
20080075610
2008-03-27

Linear Compressor Cylinder and Head Construction

#193
20080066482
2008-03-20

REFRIGERANT COMPRESSOR PROVIDED WITH A SOUND DAMPER FOR AN AIR CONDTIONING UNIT

#194
20080050227
2008-02-28

Compression chamber unit and a method for forming such unit

#195
20070280838
2007-12-06

Dual-cylinder rocking piston compressor

#196
20070264137
2007-11-15

Hermetic compressor

#197
20070253838
2007-11-01

Air compressor unloader system

#198
20070220859
2007-09-27

Link Mechanism and Variable Displacement Compressor

#199
20070212242
2007-09-13

Valve plate of a piston cylinder

#200
20070098583
2007-05-03

Air compressor having detachable structure

#201
20070065301
2007-03-22

System and method for providing oxygen

#202
20070020127
2007-01-25

Hermetic type compressor

#203
20070017244
2007-01-25

Vacuum sensor

#204
20060292022
2006-12-28

Cylinder assembly for compressor and assembling method thereof

#205
20060275160
2006-12-07

PUMP IMPROVEMENTS

#206
20060275150
2006-12-07

Refrigerant compressor

#207
20060245953
2006-11-02

Hermetic Compressor

#208
20060147330
2006-07-06

Gasket for compressor

#209
20060056985
2006-03-16

Multi-cylinder reciprocating compressor

#210
20060039813
2006-02-23

Domed cover for pump head

#211
20060034704
2006-02-16

Multi-cylinder, reciprocating compressors for air conditioning systems mounted in vehicles

#212
20060032257
2006-02-16

Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus

#213
20050226740
2005-10-13

Compressor having rear housing structure to reduce the operating temperature

#214
20050214134
2005-09-29

Universal compressor assembly

#215
20050169785
2005-08-04

Discharge valve assembly for reciprocating compressors

#216
20050152799
2005-07-14

Reciprocating compressor

#217
20050129543
2005-06-16

Compressor assembly with reciprocating piston and vented cylinder

#218
20050129542
2005-06-16

Compressor assembly with piston having multiple cross sections

#219
20050112006
2005-05-26

Universal compressor assembly

#220
20050092010
2005-05-05

Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus

#221
20050089412
2005-04-28

Miniature air compressor

#222
20050076718
2005-04-14

Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor

#223
20050063840
2005-03-24

Air compressor having stable configuration

#224
20050008512
2005-01-13

Compressor improvements

#225
20050002811
2005-01-06

Cylinder head arrangement for a piston compressor

#226
15641087
2020-10-20

High pressure pumps having a check valve keeper and associated systems and methods

#227
15384977
2019-10-15

Gas compressor compressing well head casing gas