Patents-Review.com
ClassID:

143421 ⎘

F04C2/103 - CPC Classification

Classification description:

Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement

Sub-classes:
Recent Application in this class:
#1
20250320867
2025-10-16

FLUID PUMP

 #2
20250163911
2025-05-22

ROTOR PUMP WITH DUAL-SIDED INLETS

 #3
20250116223
2025-04-10

ROTARY PISTON MACHINE

 #4
20250059972
2025-02-20

ELECTRIC OIL PUMP

 #5
20250059971
2025-02-20

GEROTOR PUMP

 #6
20250059905
2025-02-20

INTEGRATED ELECTRIC OIL PUMP AND OPERATION METHOD THEREOF

 #7
20240418166
2024-12-19

3-DIMENSIONAL PUMP ROTOR PROFILE

 #8
20240309868
2024-09-19

ELECTRONIC OIL PUMP

 #9
20240181832
2024-06-06

Pneumatic adjustment apparatus and method for vehicle

 #10
20240052829
2024-02-15

Motor vehicle oil pump

 #11
20240026879
2024-01-25

Working members of a rotary hydraulic or pneumatic machine

 #12
20240011484
2024-01-11

ELECTRIC DUAL FLUID PUMP HAVING A SINGLE MOTOR

 #13
20230313793
2023-10-05

Hydraulic machine with lubricated rotating spool

 #14
20230279855
2023-09-07

Pump device including return passage for returning fluid from discharge passage to suction passage

 #15
20230151811
2023-05-18

PUMP-MOTOR UNIT COMPRISING A CENTRED STATOR

 #16
20230141341
2023-05-11

Pressure pockets on the hollow wheel

 #17
20230062955
2023-03-02

Pump system and method for optimized torque requirements and volumetric efficiencies

 #18
20230003219
2023-01-05

Pump

 #19
20220412349
2022-12-29

Pump configured to reduce number of parts and lower manufacturing cost

 #20
20220389925
2022-12-08

ROTARY PUMP

 #21
20220388028
2022-12-08

Crosslinked fluororesin-coated rotor manufacturing method

 #22
20220381244
2022-12-01

Fluid pump with a temperature sensor

 #23
20220349402
2022-11-03

PUMP AND METHOD

 #24
20220341420
2022-10-27

Pump having outer gear and inner gear

 #25
20210324855
2021-10-21

OIL PUMP

 #26
20210207599
2021-07-08

Hydraulic motor with anti-cogging features

 #27
20210095566
2021-04-01

Internal gear pump

 #28
20200318636
2020-10-08

Scroll compressor having function of regulating oil supply path

 #29
20200158106
2020-05-21

Equal-walled gerotor pump for wellbore applications

 #30
20200072214
2020-03-05

Oil pump including gap between flange portion of tubular core and flange-opposing portion of resin housing

 #31
20200032789
2020-01-30

OIL PUMP

 #32
20190390669
2019-12-26

Equal-walled gerotor pump for wellbore applications

 #33
20190360484
2019-11-28

Connection assembly with feed pump and elastic element

 #34
20190219052
2019-07-18

Drive apparatus having oil passage defined in stopper body

 #35
20190207480
2019-07-04

Drive device

 #36
20190181723
2019-06-13

Drive device

 #37
20190170140
2019-06-06

Drive device

 #38
20190093647
2019-03-28

Lubricating oil supply apparatus and compressor using lubricating oil supply apparatus

 #39
20180371911
2018-12-27

Direct port commutator and manifold assembly

 #40
20180030982
2018-02-01

Geared fluid machine with circumferential seal having first and second spaced apart seal limbs

 #41
20170328362
2017-11-16

Integrated eccentric motor and pump

 #42
20170159439
2017-06-08

Eccentrically piloted hydraulic commutator

 #43
20170021523
2017-01-26

Oil delivery system for the lubrication of a chainsaw

 #44
20160356271
2016-12-08

ELECTRIC PUMP

 #45
20160265527
2016-09-15

OIL PUMP

 #46
20160245284
2016-08-25

Fluid pump

 #47
20160222962
2016-08-04

Internal gear pump for a hydraulic vehicle brake system and method for producing the internal gear pump

 #48
20160194958
2016-07-07

Rotary expansible chamber devices and systems incorporating the same

 #49
20160186753
2016-06-30

Trochoid pump with air ejection port

 #50
20150315913
2015-11-05

Rotary machine

 #51
20150118087
2015-04-30

MULTISTAGE OIL PUMP

 #52
20150096294
2015-04-09

Rotating pumping apparatus with seal mechanism

 #53
20150093277
2015-04-02

Borehole submersible pump assembly with a drive and a bearing arrangement disposed at opposite ends of a screw pump

 #54
20150086393
2015-03-26

OIL PUMP FOR VEHICLE

 #55
20150064038
2015-03-05

Internal gear pump

 #56
20140294644
2014-10-02

Pump having an inner and outer rotor

 #57
20140271297
2014-09-18

Net-displacement control of fluid

 #58
20140271282
2014-09-18

ROTARY PUMP WITH ROTOR AND STATOR ARRANGEMENT

 #59
20140219852
2014-08-07

Gerotor hydraulic device with adjustable output

 #60
20140199198
2014-07-17

Internal gear pump

 #61
20140112813
2014-04-24

Hydraulic motor

 #62
20140083086
2014-03-27

Gerotor pump, a gerotor motor and a gerotor transmission system

 #63
20140037487
2014-02-06

Gerotor device roller pocket geometry

 #64
20130183182
2013-07-18

Stator of a gerotor device and a method for manufacturing roller pockets in a stator of a gerotor device

 #65
20130149180
2013-06-13

Internal gear pump

 #66
20130058820
2013-03-07

Net-displacement control of fluid device

 #67
20130028778
2013-01-31

Stator of a gerotor device and a method for manufacturing roller pockets in a stator of a gerotor device

 #68
20120308423
2012-12-06

Oil pump

 #69
20120177518
2012-07-12

Semi-plugged star gerotor and method of assembling the same

 #70
20120034121
2012-02-09

Balance plate assembly for a fluid device

 #71
20120020820
2012-01-26

Rotary pump

 #72
20110250086
2011-10-13

Frame rotated hydraulic motor with improved parking brake

 #73
20110048224
2011-03-03

HYDRAULIC PUMP OR HYDRAULIC MOTOR HAVING A ROTATION SPEED SENSOR

 #74
20100150761
2010-06-17

Hydraulic machine

 #75
20090123313
2009-05-14

Net-displacement control of fluid motors and pumps

 #76
20080277239
2008-11-13

Motor vehicle hydraulic pump

 #77
20080240959
2008-10-02

Brake releasing mechanism and brake system

 #78
20070292295
2007-12-20

Rotor with cut-outs

 #79
20060230824
2006-10-19

SPEED SENSOR FLANGE ASSEMBLIES

 #80
20060067848
2006-03-30

Hydraulic machine

 #81
20050249622
2005-11-10

Device for controlling parasitic losses in a fluid pump

 #82
20050191186
2005-09-01

Aeronautical generator

 #83
20050060335
2005-03-17

Product conversion and documentation process

 #84
18650258
2024-11-12

Electric oil pump including pump housing and eccentric assembly non-concentrically arranged with pump housing

 #85
16198123
2020-06-02

Hydraulic pump assembly

 #86
15357817
2018-11-27

Hydraulic pump assembly

 #87
14261585
2016-08-23

Drive system having a variable output pump