ClassID:

143551

F04C18/02 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Sub-classes:
Recent Application in this class:
#1
20250188933
2025-06-12

DEVICES FOR COMPRESSING A GASEOUS FLUID AND METHOD OF OPERATING A DEVICE FOR COMPRESSING A GASEOUS FLUID

#2
20240337212
2024-10-10

Rotor engine side housing and method for producing the same

#3
20240068472
2024-02-29

COMPRESSOR

#4
20230272795
2023-08-31

Scroll compressor and method for assembling fixed scroll of scroll compressor

#5
20230258184
2023-08-17

Sliding component

#6
20230258183
2023-08-17

Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms

#7
20230258182
2023-08-17

Sliding component

#8
20230258181
2023-08-17

Sliding component

#9
20230066647
2023-03-02

Compressor with injection mechanism

#10
20230033883
2023-02-02

Scroll type fluid machine

#11
20220349400
2022-11-03

Scroll fluid machine having separable main body unit and motor unit

#12
20220120272
2022-04-21

Scroll compressor

#13
20220106952
2022-04-07

Compressor and air-conditioner

#14
20220082094
2022-03-17

Pump body assembly, compressor and air conditioner

#15
20210242744
2021-08-05

Magnetic bearing cooling management

#16
20210040950
2021-02-11

SCROLL COMPRESSOR AND METHOD FOR ASSEMBLING SAME

#17
20200318638
2020-10-08

Method for manufacturing compressor casing, casing blank, and compressor casing

#18
20200291943
2020-09-17

Climate-control system having valve assembly

#19
20200208636
2020-07-02

Methods and systems to detect an operation condition of a compressor

#20
20200141408
2020-05-07

Scroll compressor

#21
20200072203
2020-03-05

Motor operated compressor

#22
20200049010
2020-02-13

SCROLL FLUID MACHINE

#23
20190360486
2019-11-28

SCROLL COMPRESSOR

#24
20190338773
2019-11-07

Rotary displacement compressor having a check valve and a backflow control valve arranged in series through a discharge pipe

#25
20190301458
2019-10-03

Scroll compressor having Oldham coupling with key portions and different width key gaps

#26
20190293071
2019-09-26

Scroll fluid machine that maintains control accuracy of back pressure

#27
20190285066
2019-09-19

Gaseous fluid compression device

#28
20190277284
2019-09-12

Dual-vane scroll compressor with capacity modulation

#29
20190264688
2019-08-29

Scroll compressor having offset portion provided on discharge port to reduce backflow

#30
20190249664
2019-08-15

Rotating cylinder enthalpy-adding piston compressor and air conditioning system having same

#31
20190203717
2019-07-04

Scroll compressor with integrated refrigerant pump

#32
20190195224
2019-06-27

Scroll compressor and refrigeration cycle apparatus

#33
20190186489
2019-06-20

Scroll compressor

#34
20190178248
2019-06-13

Scroll compressor

#35
20190162185
2019-05-30

Scroll compressor having cutout provided on movable wrap to reduce backflow

#36
20190136693
2019-05-09

Scroll compressor having oldham coupling with key portions projecting from horizontal surfaces into key grooves

#37
20190052137
2019-02-14

Rotor, magnetizing method, motor, and scroll compressor

#38
20190032665
2019-01-31

Scroll compressor witha lubricant supply system and refrigeration cycle apparatus having the scroll compressor

#39
20190032659
2019-01-31

Scroll compressor and air conditioning apparatus including the same

#40
20180363653
2018-12-20

Scroll compressor

#41
20180356129
2018-12-13

CENTRIFUGAL REFRIGERANT VAPOUR COMPRESSORS

#42
20180355722
2018-12-13

Scroll fluid machine having injection holes through which lubricant is injected to the orbiting bearing

#43
20180347633
2018-12-06

Scroll compressor lower bearing

#44
20180328358
2018-11-15

Scroll fluid machine having separable main body unit and motor unit

#45
20180306186
2018-10-25

Scroll compressor

#46
20180298903
2018-10-18

Variable-capacity mechanism of scroll compressor and scroll compressor

#47
20180258935
2018-09-13

Electrically driven compressor mounted on a vehicle engine having a weight inside to shift the resonance frequency of the compressor from that of the engine

#48
20180245593
2018-08-30

Scroll-type compressor having injection passage part to establish communication between an external injection pipe and compression chamber, and relief mechanism to establish communication between compression chamber and back pressure chamber

#49
20180216461
2018-08-02

Scroll-type fluid machine and maintenance method for same

#50
20180202441
2018-07-19

Scroll fluid machine with concave and convex portions in the spiral laps

#51
20180142687
2018-05-24

Scroll compressor with different materials and thickness of scroll laps

#52
20180051697
2018-02-22

Scroll-type compressor with oil grooves on scroll sliding surfaces

#53
20170268510
2017-09-21

Compressor valve system and assembly

#54
20170248346
2017-08-31

Centrifugal refrigerant vapour compressors

#55
20170227273
2017-08-10

Controls and operation of variable frequency drives

#56
20170159658
2017-06-08

Scroll compressor with controlled pressing force

#57
20170082106
2017-03-23

MEDIUM-FREQUENCY HERMETICALLY SEALED REFRIGERANT COMPRESSOR CAPABLE OF UNLOADING DURING START

#58
20160252093
2016-09-01

Compressor assembly with liquid sensor

#59
20160252092
2016-09-01

Compressor assembly with liquid sensor

#60
20160226416
2016-08-04

Compressor having a control and diagnostic module

#61
20150377536
2015-12-31

Controls and operation of variable frequency drives

#62
20150252805
2015-09-10

Methods and systems to detect an operation condition of a compressor

#63
20150192125
2015-07-09

Switchable single-start or multi-start scroll pump

#64
20150167598
2015-06-18

Rotational pump and fuel vapor leakage detection device having the same

#65
20150159650
2015-06-11

Scroll pump having axially compliant spring element

#66
20150071807
2015-03-12

Swinging abutment rotary pump

#67
20150052936
2015-02-26

Sealed compressor and vapor compression refrigeration cycle apparatus including the sealed compressor

#68
20150036955
2015-02-05

Sliding member and manufacturing method therefor

#69
20150030487
2015-01-29

Compressor

#70
20150004038
2015-01-01

Adjustable core turbocharger

#71
20140371919
2014-12-18

Centrifugal refrigerant vapour compressors

#72
20140341710
2014-11-20

CENTRIFUGAL REFRIGERANT VAPOUR COMPRESSORS

#73
20140286807
2014-09-25

Vane compressor having a second discharge port that includes an opening portion to a compression space

#74
20140271303
2014-09-18

Vane-type compressor having an oil supply channel between the oil resevoir and vane angle adjuster

#75
20140255239
2014-09-11

AIR COMPRESSOR

#76
20140230467
2014-08-21

Scroll compressor differential pressure control during compressor shutdown transitions

#77
20140230466
2014-08-21

Scroll compressor differential pressure control during compressor startup transitions

#78
20140037483
2014-02-06

Method of active oil management for multiple scroll compressors

#79
20140017107
2014-01-16

SCROLL COMPRESSOR

#80
20140010694
2014-01-09

Scroll compressor having first and second oil grooves formed in fixed and orbiting scroll that are communicable

#81
20140010693
2014-01-09

Scroll compressor having a back pressure control valve for opening and closing a communication path in a stationary scroll

#82
20130251548
2013-09-26

Compressor

#83
20130164114
2013-06-27

Adjustable core turbocharger

#84
20130149179
2013-06-13

Scroll fluid machine having a communication hole connecting an oil supply port with a first bearing to open towards a fixed scroll and being on a radially outer side of an orbiting end plate

#85
20130129551
2013-05-23

Compressor for vehicle with reduced vibrations

#86
20130121865
2013-05-16

Scroll compressor including communication hole with improved back pressure chamber and back pressure hole locations

#87
20130098100
2013-04-25

Refrigeration compressor that maintains a satisfactory oil level

#88
20100326128
2010-12-30

Fluid machine

#89
20100141066
2010-06-10

Inverter connection terminal with cables attached to parts of the terminal projecting from upper and lower surfaces of a plate

#90
20100104460
2010-04-29

Method of assembling a refrigerating compressor

#91
20090292395
2009-11-26

Detection and correction of reverse operation of a compressor in a refrigeration system

#92
20090148325
2009-06-11

Rotary type compressor

#93
20090142214
2009-06-04

Rotary compressor with pressing mechanism and adjusting mechanism to vary a magnitude of a load in response to a pressure difference between the suction fluid and discharge fluid

#94
20090116977
2009-05-07

Compressor With Muffler

#95
20090038150
2009-02-12

METHOD FOR PRODUCING COMPRESSOR, AND COMPRESSOR

#96
20090013714
2009-01-15

Refrigeration system

#97
20080240958
2008-10-02

Rotary fluid machine having a pair of rotation mechanisms and a partition plate disposed between the rotation mechanisms

#98
20080223074
2008-09-18

REFRIGERATION SYSTEM

#99
20080159895
2008-07-03

SEALING STRUCTURE AND PACKING ELEMENT THEREOF

#100
20080075607
2008-03-27

Displacement Changing Control Device for Scroll Compressors

#101
20080050995
2008-02-28

Hydroxyl-terminated thiocarbonate containing compounds, polymers, and copolymers, and polyurethanes and urethane acrylics made therefrom

#102
20070065324
2007-03-22

Rotary compressor with low pressure space surrounding outer peripheral face of compression mechanism and discharge passage passing through housing

#103
20070041852
2007-02-22

Rotary compressor

#104
20070004263
2007-01-04

Compressor having a terminal cluster block with locking end fittings

#105
20070003425
2007-01-04

Rotary fluid device performing compression and expansion of fluid within a common cylinder

#106
20060177334
2006-08-10

Axial force reducing structure of orbiting vane compressor

#107
20060127263
2006-06-15

Back pressure apparatus for orbiting vane compressors

#108
20060073054
2006-04-06

Compression unit of orbiting vane compressor

#109
20060073053
2006-04-06

Orbiting vane compressor

#110
20060073052
2006-04-06

Orbiting vane compressor incorporating orbiting vane with oil supply function

#111
20060073051
2006-04-06

Capacity-changing unit of orbiting vane compressor

#112
20050274569
2005-12-15

Compressor sound attenuation enclosure

#113
20050124203
2005-06-09

Compressor with terminal assembly having dielectric material