ClassID:

143419

F04C2/101 - 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 with a crescent-shaped filler element, located between the inner and outer intermeshing members

Recent Application in this class:
#1
20240392781
2024-11-28

Rotor shaft hub and bearing for a high pressure fluid pump assembly

#2
20240360829
2024-10-31

Internal gear machine with helical toothing

#3
20240309867
2024-09-19

Hydraulic Gear Pump with Hydrostatic Shaft Bearing and Isolated Case Drain and Method of Operating a Hydraulic Gear Pump

#4
20240280098
2024-08-22

Internal gear pump and internal gear motor

#5
20240011482
2024-01-11

STEPPED HOLLOW WHEEL

#6
20240011481
2024-01-11

Flexible crescent for low pressure fuel pump

#7
20230392593
2023-12-07

Fluid transfer device

#8
20230296093
2023-09-21

Internal gear fluid machine

#9
20230287883
2023-09-14

Internal gear fluid machine with connection channel in each of two housing walls

#10
20230193899
2023-06-22

Internal gear machine with switching valves

#11
20220243725
2022-08-04

Gear pump

#12
20220112893
2022-04-14

ELECTRIC MOTOR AND ROD-DRIVEN ROTARY GEAR PUMPS

#13
20210285448
2021-09-16

Fluid delivery device

#14
20200318635
2020-10-08

Fluid delivery device with a forepump, a main pump, and bypass line with a check valve

#15
20200182243
2020-06-11

Food product pump with impeller and star wheel

#16
20200141405
2020-05-07

Variable displacement gear pump

#17
20200109710
2020-04-09

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

#18
20200102952
2020-04-02

Tolerance independent crescent internal gear pump

#19
20200049250
2020-02-13

Continuously variable transmission and transmission system

#20
20200011329
2020-01-09

Fluid transfer device

#21
20190285067
2019-09-19

Internally rotating gear pump

#22
20190277283
2019-09-12

Magnetically engaged pump

#23
20190072090
2019-03-07

Electric motor and rod-driven rotary gear pumps

#24
20190024660
2019-01-24

Magnetically engaged pump

#25
20180340533
2018-11-29

Pump drive for conveying a reducing agent for motor vehicle exhaust gas systems, modular motor and pump family for forming different pump drives with several such electric motors

#26
20180328360
2018-11-15

Idler gear for positive displacement gear pump

#27
20180313352
2018-11-01

Magnetically engaged pump

#28
20180223839
2018-08-09

VARIABLE DISPLACEMENT GEAR PUMP

#29
20180209416
2018-07-26

Gear pump

#30
20180155863
2018-06-07

Laundry treatment apparatus

#31
20180087505
2018-03-29

FORKLIFT, INTERNAL GEAR PUMP, AND AXIAL COMPENSATION COMPONENT THEREOF

#32
20180038395
2018-02-08

Electro-hydraulic machine with integrated sensor

#33
20180030982
2018-02-01

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

#34
20180023560
2018-01-25

Tolerance independent crescent internal gear pump

#35
20170211577
2017-07-27

Dual integrated pump having a first and second pump portion connected in series and driven by a common shaft

#36
20160298623
2016-10-13

Internal gear pump with improved communication between inlet and idler and between inlet and rotor

#37
20160222962
2016-08-04

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

#38
20160069345
2016-03-10

Internal gear pump including a separating piece

#39
20160047376
2016-02-18

Fluid transfer device

#40
20160009158
2016-01-14

ROTARY DAMPER FOR A VEHICLE

#41
20150369242
2015-12-24

Internal gear pump having a rotationally fixed axial disk

#42
20150274141
2015-10-01

Internal gear pump for a hydraulic vehicle brake system

#43
20150267701
2015-09-24

Motor-pump unit

#44
20150267699
2015-09-24

Motor-pump unit

#45
20140377114
2014-12-25

Internal gear pump

#46
20140271311
2014-09-18

Internal gear pump with axial disk and intermediate piece

#47
20140255236
2014-09-11

INTERNAL GEAR PUMP

#48
20140255235
2014-09-11

Self adjusting gear pump

#49
20140119973
2014-05-01

INTERNAL GEAR PUMP

#50
20140086778
2014-03-27

Internal gear pump having an internally toothed ring gear supported in a rotatable bearing

#51
20140030131
2014-01-30

Internal gear pumps for a hydraulic vehicle braking system

#52
20140010696
2014-01-09

Axial disc and gear pump with axial disc

#53
20130330223
2013-12-12

Internal gear pump having a lubricant feed from the suction region

#54
20130087002
2013-04-11

Internal Gear Machine

#55
20120315175
2012-12-13

Double internal gear pump

#56
20120244028
2012-09-27

Internal Gear Pump for a Hydraulic Vehicle Braking System

#57
20100322810
2010-12-23

PUMP ASSEMBLY FOR SYNCHRONOUS PRESSURIZATION OF TWO FLUID CIRCUITS

#58
20100247363
2010-09-30

Internal gear pump for a brake system

#59
20100233005
2010-09-16

Internal gear pump for a brake system

#60
20100143175
2010-06-10

Internal gear pump with optimized noise behaviour

#61
20090185940
2009-07-23

Method for manufacturing trochoid pump and trochoid pump obtained

#62
20090131210
2009-05-21

Differential gear unit for motor vehicles comprising an active control mechanism for the driving force distribution

#63
20090123316
2009-05-14

Gear pump

#64
20090104064
2009-04-23

Method for manufacturing trochoid pump and trochoid pump obtained

#65
20090010791
2009-01-08

Internal gear pump

#66
20080226484
2008-09-18

Internal gear pump including a crescent

#67
20080187450
2008-08-07

Crescent gear pump with novel rotor set

#68
20080014107
2008-01-17

Gear pump for actuating a clutch

#69
20060288560
2006-12-28

Assembly and method for pre-stressing a magnetic coupling canister

#70
20060216188
2006-09-28

Internal gear pump with recesses on the gear bearing surfaces

#71
20060204394
2006-09-14

Gear pump

#72
20060193741
2006-08-31

Gear pump and holding element therefor

#73
20050276714
2005-12-15

Gear pump

#74
20050220653
2005-10-06

Magnetically driven gear pump

#75
20050220633
2005-10-06

Fuel pump gasket

#76
20050152803
2005-07-14

Internal gear pump with recesses on the gear bearing surfaces

#77
20050123419
2005-06-09

Pumping device

#78
18650258
2024-11-12

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

#79
18619147
2025-05-20

Cooling pump assembly

#80
17968998
2023-06-20

Hydraulic gear pump with radial pressure compensator

#81
16951512
2023-06-20

Hydraulic gear pump with axial compensation

#82
16951480
2022-11-22

Hydraulic gear pump with radial pressure compensator