ClassID:

143435

F04C2/14 - 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 other than internal-axis type with toothed rotary pistons

Sub-classes:
Recent Application in this class:
#1
20260139694
2026-05-21

LINEAR ACTUATOR ASSEMBLY AND SYSTEM

#2
20260049611
2026-02-19

REMOVABLE PUMP HEAD WITH A POLYMERIC SHAFT COUPLER

#3
20260036125
2026-02-05

COMPOSITE SLUG-BEARING FOR GEAR PUMPS

#4
20250274015
2025-08-28

HYDRAULIC MODULE AND ASSEMBLY HAVING SUCH A HYDRAULIC MODULE

#5
20250163912
2025-05-22

EXTERNAL GEAR PUMP

#6
20240035470
2024-02-01

Electric-motor-driven hydraulic pump actuator

#7
20230250819
2023-08-10

Variable displacement gerotor pump

#8
20220163054
2022-05-26

Linear actuator assembly and system

#9
20210324852
2021-10-21

Device for providing a flow and a method of varying a flow rate

#10
20210262464
2021-08-26

Positive displacement pump including an unloading device

#11
20200370550
2020-11-26

Electric hydraulic actuator

#12
20200347854
2020-11-05

Linear Actuator Assembly and System

#13
20200340475
2020-10-29

Scavenging centrifugal baffle pump

#14
20200277952
2020-09-03

Gear pump for venting trapped volume

#15
20200232388
2020-07-23

Scavenge pump

#16
20200232326
2020-07-23

Gear pump or motor with features for determining if assembled correctly

#17
20200224682
2020-07-16

Linear actuator assembly and system

#18
20200109710
2020-04-09

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

#19
20190368401
2019-12-05

INTEGRATED APPARATUS, EXHAUST GAS POST-PROCESSING SYSTEM, AND CONTROL METHOD

#20
20190301451
2019-10-03

Hybrid pump bearing for contamination resistance

#21
20190285068
2019-09-19

Positive displacement pump including an unloading device

#22
20190255250
2019-08-22

Dual chamber and gear pump assembly for a high pressure delivery system

#23
20190219069
2019-07-18

Motor oil pump assembly, steering system, and vehicle

#24
20190145406
2019-05-16

Scavenge/charge pump drive gear for integrated drive generator

#25
20190128257
2019-05-02

PUMP APPARATUS

#26
20180355872
2018-12-13

METER-TYPE MAGNETIC PUMP AND MEASURING MODULE THEREOF

#27
20180347563
2018-12-06

Pump for corrosive fluids

#28
20180328360
2018-11-15

Idler gear for positive displacement gear pump

#29
20180230994
2018-08-16

Rotor assemblies having radial deformation control members

#30
20180209419
2018-07-26

Fuel flow control assembly of aircraft engine and method

#31
20180180043
2018-06-28

PUMP DEVICE

#32
20180172636
2018-06-21

System for monitoring machine fluids by measuring fluctuations in a magnetic field

#33
20180135628
2018-05-17

Systems and methods of securing a compliant member in a pump

#34
20180126203
2018-05-10

HIGH-VISCOSITY FIRE SUPPRESSANT DELIVERY SYSTEM USING AN INJECTION QUILL

#35
20180106253
2018-04-19

Triple gear pump and fluid supplying device

#36
20180051743
2018-02-22

Gear pump bearing

#37
20180051742
2018-02-22

Gear pump bearing

#38
20180051695
2018-02-22

Pump for an engine

#39
20170335846
2017-11-23

Gear Pump

#40
20170334212
2017-11-23

Gear pump and printing apparatus provided with same

#41
20170314556
2017-11-02

Balance shaft module

#42
20170314553
2017-11-02

Positive displacement pump including an unloading device

#43
20170298966
2017-10-19

Magnetically controlled valve and pump devices and methods of using the same

#44
20170268503
2017-09-21

GEAR PUMP FOR A WASTE HEAT RECOVERY SYSTEM

#45
20170254329
2017-09-07

Elastic containment assembly for a pump

#46
20170184098
2017-06-29

Container assembly for a pump

#47
20170184095
2017-06-29

Gear pump

#48
20170175736
2017-06-22

Gear pump with end plates or bearings having spiral grooves

#49
20170146035
2017-05-25

Linear actuator assembly and system

#50
20170130643
2017-05-11

COMPOSITE ROTARY COMPONENT

#51
20170114807
2017-04-27

Linear actuator assembly and system

#52
20170089338
2017-03-30

Method for lubricating a coupling shaft for gear pump

#53
20170089335
2017-03-30

Gear pump having through-shaft bearing weepage control

#54
20170083029
2017-03-23

Apparatus for the application of a liquid or viscous medium

#55
20170058895
2017-03-02

DUAL PUMP SYSTEM FOR AUTOMATIC TRANSMISSION AUGMENTATION, EXTENDED STOP AND START, AND SAILING

#56
20160303864
2016-10-20

Gear pump and printing apparatus provided with same

#57
20160290336
2016-10-06

Gear pump or motor

#58
20160245282
2016-08-25

POLYETHERIMIDE PUMP

#59
20160238004
2016-08-18

Gear pump with drive

#60
20160230620
2016-08-11

Method for operating a gear pump, and gear pump

#61
20160161017
2016-06-09

HYDRAULIC MOTOR COMPARTMENT WITH HYDRAULIC MOTOR DRIVE

#62
20160108914
2016-04-21

Gear pump

#63
20160032922
2016-02-04

Gear pump drive gear stationary bearing

#64
20160025092
2016-01-28

Electric pump unit

#65
20160025091
2016-01-28

Pump system

#66
20160010645
2016-01-14

Sealing of a gear pump

#67
20160009264
2016-01-14

Internal gear pump

#68
20160009158
2016-01-14

ROTARY DAMPER FOR A VEHICLE

#69
20150377235
2015-12-31

Two stage pump, particularly provided as main pump for supplying an aircraft engine with fuel

#70
20150354564
2015-12-10

OIL PUMP

#71
20150337836
2015-11-26

Gear pump

#72
20150316062
2015-11-05

Electric motor with flux collector

#73
20150226212
2015-08-13

ROTATING PUMP

#74
20150219097
2015-08-06

Gear pump including an inner rotor having a plurality of teeth

#75
20150204325
2015-07-23

Internal gear pump

#76
20150184655
2015-07-02

Melt pumps for pressing synthetic material through a tool

#77
20150057612
2015-02-26

Dual chamber and gear pump assembly for a high pressure delivery system

#78
20150037181
2015-02-05

Pump arrangement having temperature control components

#79
20140369876
2014-12-18

Gear pump and gear pump operating method

#80
20140348669
2014-11-27

Pump Device for Ice Cream or Yogurt Machine

#81
20140301882
2014-10-09

Selectable flow hydraulic gear pump

#82
20140294649
2014-10-02

Sealing for a pump device

#83
20140271314
2014-09-18

Gear wheel with profile capable of meshing with semi-encapsulation in a geared hydraulic apparatus

#84
20140003987
2014-01-02

Aircraft main engine fuel pump with multiple gear stages using shared journals

#85
20130274048
2013-10-17

Transmission unit

#86
20130126024
2013-05-23

Bi-directional pump

#87
20130045125
2013-02-21

Fluid energy transfer device with improved bearing assemblies

#88
20130039793
2013-02-14

Reduced noise fluid pump

#89
20130034463
2013-02-07

Gear pump including friction brake ring to generate uniform conveyance flow

#90
20130025365
2013-01-31

Positive displacement flow meter

#91
20120269668
2012-10-25

Polymeric External Gear Pump for Hot Cooking Oil

#92
20120267446
2012-10-25

PUMP FOR DELIVERING A FLUID

#93
20120252335
2012-10-04

Meat processing assembly

#94
20120252334
2012-10-04

Meat processing assembly

#95
20120252333
2012-10-04

Meat processing assembly

#96
20120252332
2012-10-04

MEAT PROCESSING ASSEMBLY

#97
20120252331
2012-10-04

MEAT PROCESSING ASSEMBLY

#98
20120244027
2012-09-27

Pump device

#99
20120219447
2012-08-30

Coupling shaft for gear pump

#100
20120219446
2012-08-30

Input shaft assembly for gear pump

#101
20120219445
2012-08-30

Seal retaining sleeve for gear pump

#102
20120219444
2012-08-30

Input shaft lubrication for gear pump

#103
20120219442
2012-08-30

Pump device for ice cream or yogurt machine

#104
20120213657
2012-08-23

FLUID PUMP MECHANICAL SEAL

#105
20120207637
2012-08-16

PERIPHERAL PUMP-TURBINE

#106
20120207626
2012-08-16

Thermally efficient multiple stage gear pump

#107
20120141316
2012-06-07

Gear root geometry for increased carryover volume

#108
20120051961
2012-03-01

Pump apparatus with pressing means

#109
20110311386
2011-12-22

Pumping systems

#110
20110286872
2011-11-24

Metering gear pump or segment, and metering gear pump assembly comprising a plurality of metering gear pumps or segments

#111
20110243782
2011-10-06

Soft Serve Ice Cream Pump Enhancers

#112
20110184348
2011-07-28

Dual chamber and gear pump assembly for a high pressure delivery system

#113
20110129359
2011-06-02

VARIABLE OUTPUT PUMP

#114
20110103993
2011-05-05

GEAR WHEEL WITH PROFILE CAPABLE OF MESHING WITH SEMI-ENCAPSULATION IN A GEARED HYDRAULIC APPARATUS

#115
20110103992
2011-05-05

GEAR PUMPS AND METHODS FOR USING GEAR PUMPS

#116
20110097980
2011-04-28

Meat processing assembly

#117
20100260638
2010-10-14

Gear pump

#118
20100192921
2010-08-05

Fuel pump, in particular for a fuel system of a piston engine

#119
20100185322
2010-07-22

Method and apparatus for dispensing fluid compositions

#120
20100150764
2010-06-17

Pump having modular shaft bearings and seals

#121
20090297384
2009-12-03

Dual displacement external gear pump

#122
20090120507
2009-05-14

FLUID METERING AND PUMPING DEVICE

#123
20090088280
2009-04-02

VARIABLE DELIVERY GEAR PUMP

#124
20090041594
2009-02-12

VARIABLE DISPLACEMENT TYPE GEAR PUMP

#125
20070237023
2007-10-11

Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas

#126
20060165544
2006-07-27

Apparatus having a housing and having at least one rotating component disposed in the housing

#127
20060039804
2006-02-23

Motor-pump unit

#128
20050220919
2005-10-06

Extruder/gear pump assembly

#129
20050196300
2005-09-08

Pump

#130
20050123419
2005-06-09

Pumping device

#131
18987550
2026-03-24

Gear pump parallel load path

#132
15420308
2018-03-13

Aerated squeeze-film damper