Patents-Review.com
ClassID:

142838 ⎘

F04B27/02 - CPC Classification

Classification description:

Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft

Recent Application in this class:
#1
20260078751
2026-03-19

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

 #2
20250347270
2025-11-13

AIR COMPRESSOR

 #3
20250027488
2025-01-23

AIR COMPRESSOR

 #4
20240418161
2024-12-19

GAS COMPRESSOR AND SYSTEM AND METHOD FOR GAS COMPRESSING

 #5
20240263628
2024-08-08

MULTI-PHASE FLUID PUMP SYSTEM

 #6
20240060483
2024-02-22

FOUR-CYLINDER COMPRESSOR

 #7
20230287874
2023-09-14

Apparatuses, Systems, and Methods for Improved Performance of a Pressurized System

 #8
20220268273
2022-08-25

Gas compressor and system and method for gas compressing

 #9
20220268264
2022-08-25

HYDROGEN GAS COMPRESSION DEVICE

 #10
20220136493
2022-05-05

Apparatuses, systems, and methods for improved performance of a pressurized system

 #11
20210404458
2021-12-30

Reciprocating-piston machine, compressed air supply system, vehicle and method for producing a reciprocating-piston machine

 #12
20210317825
2021-10-14

Gas compressor and system and method for gas compressing

 #13
20210293229
2021-09-23

Double-piston compressor having a sliding block producing a stroke curve that deviates from a sinusoidal stroke curve

 #14
20210277880
2021-09-09

Linear actuator pumping system

 #15
20210270257
2021-09-02

Multi-phase fluid pump system

 #16
20210215148
2021-07-15

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

 #17
20210003121
2021-01-07

PROCESS FOR OPERATING A SINGLE-STROKE COMBUSTION ENGINE

 #18
20200309103
2020-10-01

Double acting two stage integrated pump

 #19
20200277946
2020-09-03

Dual engine-compressor system

 #20
20200208619
2020-07-02

ROTARY CYLINDER DEVICE

 #21
20200124040
2020-04-23

Gas compressor and system and method for gas compressing

 #22
20200056600
2020-02-20

Rolling cylinder displacement compressor

 #23
20200040882
2020-02-06

Gas intensifier with lubrication

 #24
20200040880
2020-02-06

Dual engine-compressor system

 #25
20200032780
2020-01-30

Liquid delivery device and fluid chromatograph

 #26
20190285061
2019-09-19

COMPRESSOR

 #27
20190211817
2019-07-11

High-pressure positive displacement plunger pump

 #28
20190186478
2019-06-20

RECIPROCATING COMPRESSOR AND MANUFACTURING METHOD

 #29
20190120216
2019-04-25

Electric-driven air pump

 #30
20190032652
2019-01-31

Gas compressor and system and method for gas compressing

 #31
20190032647
2019-01-31

Reciprocating-piston machine, compressed-air supply installation, compressed-air supply system, and vehicle having a compressed-air supply installation

 #32
20180283366
2018-10-04

DOUBLE-PISTON COMPRESSOR OF A COMPRESSED AIR SUPPLY DEVICE

 #33
20180266406
2018-09-20

Double-piston compressor of a compressed-air supply device

 #34
20180187664
2018-07-05

Medical air compressor

 #35
20180073497
2018-03-15

Gas compressor and system and method for gas compressing

 #36
20180038365
2018-02-08

Gas compressor and system and method for gas compressing

 #37
20180030978
2018-02-01

Gas compressor and system and method for gas compressing

 #38
20180030889
2018-02-01

Drive device provided with XY-separating crank mechanism

 #39
20170248130
2017-08-31

DUAL SERVICE COMPRESSOR SYSTEM FOR CONDITIONING HYDROCARBON GAS

 #40
20170211557
2017-07-27

DOUBLE-ACTING REFRIGERATION COMPRESSOR

 #41
20170184087
2017-06-29

Multi-stage piston compressor having an outer cooling air conduction system

 #42
20160348664
2016-12-01

BASE UNIT FOR ASSEMBLING A CRANKCASE OF A RECIPROCAL COMPRESSOR

 #43
20160341187
2016-11-24

RECIPROCATING MOTOR-COMPRESSOR WITH INTEGRATED STIRLING ENGINE

 #44
20160281701
2016-09-29

Method and equipment for improving the efficiency of compressors and refrigerators

 #45
20160238001
2016-08-18

DOUBLE-HEADED PISTON TYPE COMPRESSOR

 #46
20150308424
2015-10-29

Systems and devices including valves coupled to electric devices and methods of making, using, and operating the same

 #47
20150078935
2015-03-19

Air compressor with improved cooling performance

 #48
20140369873
2014-12-18

Compressor for pressurized fluid output

 #49
20140294636
2014-10-02

Reciprocating compressor

 #50
20140294635
2014-10-02

Natural gas compressor with scissor drive assembly

 #51
20140216262
2014-08-07

Reciprocating pump and oxygen concentrator

 #52
20120192710
2012-08-02

Oil-free air compressor for rail vehicles

 #53
20120023973
2012-02-02

METHOD AND EQUIPMENT FOR IMPROVING THE EFFICIENCY OF COMPRESSORS AND REFRIGERATORS

 #54
20110164990
2011-07-07

Multi-stage compressor

 #55
20110070113
2011-03-24

System and devices including valves coupled to electric devices and methods of making, using, and operating the same

 #56
20100150746
2010-06-17

COMPRESSOR

 #57
20100014992
2010-01-21

Reciprocating positive-displacement compressors

 #58
20090199811
2009-08-13

Crankshaft beam piston engine or machine

 #59
20090104052
2009-04-23

Pump

 #60
20090016917
2009-01-15

Compact dual rocking piston pump with reduced number of parts

 #61
20080276737
2008-11-13

Crank Gear for a Reciprocating Compressor

 #62
20080141855
2008-06-19

Efficiencies for cam-drive piston engines or machines

 #63
20080025856
2008-01-31

COMPRESSOR FOR LIQUID FUEL CANISTER

 #64
20070068468
2007-03-29

Rotary to reciprocal power transfer device

 #65
20070056552
2007-03-15

Efficiencies for piston engines or machines

 #66
20070022759
2007-02-01

Dynamic system for refrigeration equipment

 #67
20060275160
2006-12-07

PUMP IMPROVEMENTS

 #68
20060180018
2006-08-17

RECIPROCATING COMPRESSOR FRAME

 #69
20060104844
2006-05-18

Multi-stage piston type compressor

 #70
20050260080
2005-11-24

Reciprocating compressor

 #71
20050238513
2005-10-27

Double piston for a compressor

 #72
20050201868
2005-09-15

Multi-stage compressor

 #73
20050175480
2005-08-11

Yoke mechanism for compressor

 #74
20050152798
2005-07-14

Piston compressor

 #75
20050144948
2005-07-07

Individual cogeneration plant and local network

 #76
20050112002
2005-05-26

Crankcase sealing apparatus

 #77
20050100458
2005-05-12

Pump with transfer tube

 #78
20050098222
2005-05-12

Flapper valve mounting structure

 #79
20050074351
2005-04-07

Pump cylinder seal

 #80
20050069431
2005-03-31

Piston mounting and balancing system

 #81
20050031476
2005-02-10

Single-step or muti-step piston compressor

 #82
14262992
2015-06-09

Zero turn drive apparatus and vehicle

 #83
13897772
2014-04-29

Two piece center section for a drive apparatus