ClassID:

143489

F04C11/005 - CPC Classification

Classification description:

Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type ; Pumping installations of dissimilar working principle

Sub-classes:
Recent Application in this class:
#1
20250361864
2025-11-27

Two-Stage Pump

#2
20250270994
2025-08-28

PUMP ARRANGEMENT

#3
20250101978
2025-03-27

TANDEM PUMP COMPRISING A MAIN FLOW AND A DRY SUMP FLOW

#4
20240318650
2024-09-26

Electric motor with dual pump for providing scavenge and delivery functions

#5
20230151812
2023-05-18

Hydraulic pump having impeller pump and trochoid pump

#6
20230043842
2023-02-09

Axial piston pump mounting flange configuration

#7
20220105858
2022-04-07

Pump System and Method for Operating a Pump System

#8
20210123450
2021-04-29

Electric compressor system for vehicle

#9
20200318635
2020-10-08

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

#10
20200088180
2020-03-19

Compressor having oil guide path

#11
20190277279
2019-09-12

Reciprocating pump with dual circuit power end lubrication system

#12
20180346316
2018-12-06

Multiple pump system

#13
20180209418
2018-07-26

Lobe gear pump with inducer assembly and centrifugal pump having one fluid flow path

#14
20180155863
2018-06-07

Laundry treatment apparatus

#15
20180087425
2018-03-29

Pumps and hydraulic circuits including venturi assembly

#16
20180045198
2018-02-15

Gear pump for compressible liquids or fluids

#17
20170184114
2017-06-29

Pump seal lubricator

#18
20170184110
2017-06-29

Fluid conditioning module

#19
20170058895
2017-03-02

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

#20
20170044986
2017-02-16

Gear pump intended, in particular, as a high pressure fuel pump

#21
20160327047
2016-11-10

SELFPRIMING SYSTEM HAVING VALVE FOR A CENTRIFUGAL PUMP

#22
20160327036
2016-11-10

Internal gear pump

#23
20160290334
2016-10-06

Polymeric materials

#24
20160230756
2016-08-11

Vehicle hydraulic supply apparatus

#25
20160229681
2016-08-11

Multiple pump system

#26
20160223070
2016-08-04

Vehicle drive device

#27
20160177945
2016-06-23

Reciprocating pump with dual circuit power end lubrication system

#28
20160053757
2016-02-25

Metering pump made of plastic

#29
20160025091
2016-01-28

Pump system

#30
20150377235
2015-12-31

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

#31
20150369243
2015-12-24

Spiral compressor

#32
20150204325
2015-07-23

Internal gear pump

#33
20150132155
2015-05-14

Pump device with a vacuum pump and a lubrication pump

#34
20140338759
2014-11-20

Fuel pumping unit

#35
20140321230
2014-10-30

Mixing pump

#36
20140178231
2014-06-26

First and second pumps in a common housing with parallel flow

#37
20140178230
2014-06-26

Fixed and variable pumps with parallel flow

#38
20140034162
2014-02-06

Multiple pump system

#39
20130320147
2013-12-05

Gear pump, pumping apparatus including the same, and aircraft fuel system including gear pump

#40
20130171010
2013-07-04

Motor control unit and electric pump unit

#41
20130052070
2013-02-28

Oscillating slide machine that pumps different fluid mediums at different pressures

#42
20130022485
2013-01-24

Unified variable displacement oil pump and vacuum pump

#43
20130004337
2013-01-03

System and method for driving a pump

#44
20120312392
2012-12-13

Pump system with vacuum source

#45
20120263618
2012-10-18

Bi-metal pump gear

#46
20120138011
2012-06-07

Lubrication circuit layout

#47
20120087820
2012-04-12

ROTARY DEVICE

#48
20120051948
2012-03-01

Vacuum Pump

#49
20110274567
2011-11-10

LUBRICANT PUMP AND MACHINE WITH SUCH A LUBRICANT PUMP

#50
20110020162
2011-01-27

Screw rotor

#51
20110008183
2011-01-13

Vacuum source and float valve for a self-priming pump

#52
20100024778
2010-02-04

Fuel pumping system

#53
20090304526
2009-12-10

Debris removal apparatus for a pump and method

#54
20090120405
2009-05-14

System with a compressor and with a consumer in a motor vehicle

#55
20080273992
2008-11-06

CAVITATION-DETERRING ENERGY-EFFICIENT FLUID PUMP SYSTEM AND METHOD OF OPERATION

#56
20080247882
2008-10-09

Split-pressure dual pump hydraulic fluid supply system for a multi-speed transmission and method

#57
20080210436
2008-09-04

Method for delivering a multi phase mixture and pump installation

#58
20080193316
2008-08-14

ROOTS PUMP

#59
20080138198
2008-06-12

Vane pump with blade base members

#60
20080031758
2008-02-07

Feed Screw For Eccentric Screw Pump

#61
20080019843
2008-01-24

Multiple pump unit

#62
20070292287
2007-12-20

Combined pump with rotodynamic impeller

#63
20070264144
2007-11-15

Extruder system with integrated gear pump

#64
20070059187
2007-03-15

Oil and vacuum pumps group for a motor vehicle engine

#65
20070023088
2007-02-01

Fluid Transfer Pump

#66
20060257267
2006-11-16

Pump system for an automotive engine

#67
20060110261
2006-05-25

Pump System with a vacuum source coupled to a separator

#68
20060102428
2006-05-18

Lubrication apparatus

#69
20050232784
2005-10-20

Pump assembly

#70
20050191186
2005-09-01

Aeronautical generator