ClassID:

143561

F04C18/0276 - 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 both members having co-operating elements in spiral form; Details concerning the involute wraps or their base, e.g. geometry; Details concerning the involute wraps Different wall heights

Recent Application in this class:
#1
20260146605
2026-05-28

CO-ROTATING SCROLL COMPRESSOR

#2
20250207588
2025-06-26

CO-ROTATING SCROLL COMPRESSOR

#3
20230358232
2023-11-09

Scroll compressor

#4
20230132581
2023-05-04

SCROLL COMPRESSOR

#5
20230101084
2023-03-30

Scroll compressor having separate flow paths in communication with different back pressure chambers

#6
20220299028
2022-09-22

Scroll compressor including a fixed-side first region receiving a force which presses a movable scroll against a moveable scroll against a fixed scroll

#7
20220220960
2022-07-14

Scroll compressor including end-plate side stepped portions of each of the scrolls corresponding to wall-portion side stepped portions of each of the scrolls

#8
20220178370
2022-06-09

Scroll compressor

#9
20210156382
2021-05-27

Tip seal and scroll fluid machine using same

#10
20210148361
2021-05-20

Scroll compressor including fixed and orbiting scroll having stepped portions and a surface hardened treatment

#11
20200309131
2020-10-01

Scroll fluid machine and tip seal

#12
20200095993
2020-03-26

Scroll fluid machine with decreasing inter-facing surface and arc shape end plate central portion

#13
20200056610
2020-02-20

Scroll compressor with different sized gaps formed between inner and outer peripheral surfaces of scroll laps

#14
20190120230
2019-04-25

Scroll fluid machine having a different mesh clearance between the fixed and orbiting scroll wraps

#15
20190120229
2019-04-25

Scroll fluid machine and method for producing same

#16
20190113033
2019-04-18

Scroll fluid machine, and method for processing scroll member

#17
20180306187
2018-10-25

Scroll compressor with wrap contour modification

#18
20180045199
2018-02-15

Scroll compressor with step

#19
20180038368
2018-02-08

Scroll compressor including fixed and orbiting scrolls having different heights and surface hardenings

#20
20180038367
2018-02-08

Scroll compressor including end-plate side stepped portions of each of the scrolls corresponding to wall-portion side stepped portions of each of the scrolls

#21
20170342837
2017-11-30

Scroll fluid machine

#22
20170239785
2017-08-24

Method and device for manufacturing compressor scrolls, compressor scroll, and scroll compressor

#23
20170122317
2017-05-04

Horizontal step scroll compressor with bypass ports

#24
20160341200
2016-11-24

Scroll compressor

#25
20160131134
2016-05-12

Scroll compressor having a scroll wrap with tiered inner end

#26
20160102667
2016-04-14

Scroll compressor having a fixed scroll pressed in an axial direction against an orbiting scroll

#27
20160102665
2016-04-14

Scroll compressor

#28
20160090986
2016-03-31

Scroll compressor

#29
20160084250
2016-03-24

Scroll compressor in which a fixed scroll and an orbiting scroll are placed between a partition plate and a main bearing

#30
20140308146
2014-10-16

Scroll compressor with inclined surfaces on the stepped portions

#31
20130251576
2013-09-26

Scroll compressor and processing method of scroll including a projection on a tip seal and a hole in a tip seal groove

#32
20120315173
2012-12-13

Scroll compressor

#33
20120263615
2012-10-18

Scroll Fluidic Device

#34
20120107164
2012-05-03

Variable displacement scroll compressor having first and second compression chambers that communicate with each other

#35
20120100026
2012-04-26

Scroll compressor including flow path with differing axial extents

#36
20120100025
2012-04-26

Multi-stage scroll machine

#37
20110286871
2011-11-24

Scroll compressor having tip seals of different lengths having different thickness or widths

#38
20110200475
2011-08-18

Scroll compressor with stepped spiral wraps

#39
20100307343
2010-12-09

Compressor incorporated with oil separator

#40
20100303661
2010-12-02

Scroll-type compressor

#41
20100233008
2010-09-16

Rotary fluid machine having outer and inner cylinder chambers with different heights

#42
20100196183
2010-08-05

Scroll compressor with materials to allow run-in

#43
20100172781
2010-07-08

Scroll compressor with improved rotation prevention mechanism

#44
20100172780
2010-07-08

Scroll compressor for preventing performance deterioration and variation due to gas leakage

#45
20100092318
2010-04-15

Scroll compressor having a gradually changing tip clearance

#46
20100074784
2010-03-25

Scroll compressor having optimized cylinder oil circulation rate of lubricant

#47
20100068086
2010-03-18

Scroll fluid machine with cold forged eccentric crankshaft

#48
20100034683
2010-02-11

COMPRESSOR WITH BUILT-IN OIL SEPARATOR

#49
20100024467
2010-02-04

SCROLL COMPRESSOR AND AIR CONDITIONER

#50
20090317275
2009-12-24

Scroll compressor including a plurality of shoulder sections

#51
20090280019
2009-11-12

Stepped scroll compressor with changing step mesh gaps

#52
20090208356
2009-08-20

Scroll compressor with valve for controlling fluid to flow from an outer wall to an inner wall of a fixed or a movable spiral wrap

#53
20090035167
2009-02-05

STEPPED SCROLL COMPRESSOR WITH STAGED CAPACITY MODULATION

#54
20090000872
2009-01-01

Compressor with dual pathways for returning lubricating oil

#55
20070217934
2007-09-20

Scroll compressor having shoulder and rotation-preventing portions positioned as different phases

#56
20070212246
2007-09-13

Scroll compressor having variable height scroll

#57
20070178002
2007-08-02

Scroll compressor having a fixed scroll part and an orbiting scroll part

#58
20070065325
2007-03-22

Scroll compressor with bypass holes communicating with an intake chamber

#59
20060177332
2006-08-10

Step-type capacity varying apparatus of scroll compressor

#60
20060171832
2006-08-03

Compressor including integrally formed separation tube and seal bolt

#61
20060140804
2006-06-29

Apparatus for varying capacity in scroll compressor

#62
20060099096
2006-05-11

Scroll pump system

#63
20050220651
2005-10-06

Scroll type hydraulic machine

#64
20050129536
2005-06-16

Compressor including separation tube engagement mechanism

#65
20050084403
2005-04-21

Compact scroll pump

#66
20050053507
2005-03-10

Scroll compressor