ClassID:

148406

F16D31/02 - CPC Classification

Classification description:

Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders

Recent Application in this class:
#1
20240200615
2024-06-20

FLUID PUMP

#2
20220111305
2022-04-14

GAS PURIFYING APPARATUS, GAS PURIFYING METHOD AND CONVEYING HEATING APPARATUS

#3
20220060022
2022-02-24

Integrated energy conversion, transfer and storage system

#4
20210129805
2021-05-06

Hydraulic clutches, gearboxes, transmissions, and energy recovery systems

#5
20210102585
2021-04-08

Sealed piston apparatus and related systems for use with vehicle torque converters

#6
20200376957
2020-12-03

Hydraulic transaxle

#7
20200362924
2020-11-19

Piston apparatus for use with vehicle clutches

#8
20200324755
2020-10-15

Back-to-back selectable one-way clutches for engine disconnect devices of motor vehicle powertrains

#9
20200256404
2020-08-13

Control systems for hydraulic axial displacement machines

#10
20200217307
2020-07-09

MECHANICAL IMPULSE MOTOR BY COMPRESSED AIR COMPRESSION

#11
20190305558
2019-10-03

Integrated energy conversion, transfer and storage system

#12
20190234342
2019-08-01

Gas purifying apparatus, gas purifying method and conveying heating apparatus

#13
20170241105
2017-08-24

Working machine

#14
20170191752
2017-07-06

Air purification units

#15
20160273558
2016-09-22

Systems for energy recovery and related methods

#16
20150167752
2015-06-18

Systems for energy recovery and related methods

#17
20150159623
2015-06-11

Wave responsive electrical generator

#18
20150147191
2015-05-28

Pump control system and method

#19
20140326567
2014-11-06

Drive shaft structure

#20
20140033944
2014-02-06

Energy recovery system for a mobile machine

#21
20140033941
2014-02-06

Energy recovery system for a mobile machine

#22
20130318959
2013-12-05

Hydraulic Circuits with Energy Conservation Features for Overrunning Load Conditions

#23
20130239561
2013-09-19

Hydraulic transaxle

#24
20130108428
2013-05-02

Hydraulic power unit having ceramic oscillator, and hydraulic engine including the hydraulic power unit

#25
20130098025
2013-04-25

Coiled tubing injector with a weight on bit circuit

#26
20130082465
2013-04-04

Wave responsive electrical generator

#27
20120285153
2012-11-15

Drive System for Electric Vehicles

#28
20120206842
2012-08-16

Fault condition protection

#29
20120017583
2012-01-26

Shape memory alloy powered hydraulic accumulator having actuation plates

#30
20120006155
2012-01-12

SHIFT TRANSMISSION

#31
20110284310
2011-11-24

Axle driving apparatus

#32
20110271829
2011-11-10

Rotary hydraulic machine and controls

#33
20110188274
2011-08-04

Fault condition protection

#34
20110114037
2011-05-19

Systems for energy recovery and related methods

#35
20110100309
2011-05-05

Ultra-efficient hydraulic hybrid drivetrain and method of operation

#36
20110067934
2011-03-24

Integrated hydrostatic transmission for left and right wheel drive

#37
20110067393
2011-03-24

Aircraft emergency and backup secondary power apparatus

#38
20110030361
2011-02-10

HYDROSTATIC LINEAR WIND MILL FOR WIND ENERGY HARNESSING APPLICATIONS

#39
20110005884
2011-01-13

Engine clutch and method of using same

#40
20110005218
2011-01-13

Eccentric gearing type clutch

#41
20100277838
2010-11-04

Fault condition protection

#42
20100257856
2010-10-14

Pump Unit And Hydrostatic Transmission

#43
20100225157
2010-09-09

Spindle with hydraulic passage arrangement and method of manufacture

#44
20100222172
2010-09-02

Power transmission system of hydraulically driven working vehicle

#45
20100219035
2010-09-02

TORQUE TRANSMISSION DEVICE

#46
20100174454
2010-07-08

Driving force controller and driving force control method of working vehicle

#47
20090260354
2009-10-22

Axle driving apparatus

#48
20090235656
2009-09-24

Coiled tubing injector with a weight on bit circuit

#49
20090235655
2009-09-24

Hystat transmission having pressure override control

#50
20090229907
2009-09-17

Hydraulic drive vehicle

#51
20090194382
2009-08-06

CLUTCH

#52
20090193803
2009-08-06

Axle driving apparatus

#53
20090107135
2009-04-30

Low power HMT with by-pass valve

#54
20090029826
2009-01-29

Controller of work vehicle

#55
20090025997
2009-01-29

Hydraulic Drive Vehicle with Cooling System

#56
20090008183
2009-01-08

Pump unit and hydrostatic transmission

#57
20080304187
2008-12-11

Fault condition protection

#58
20080289326
2008-11-27

Pump unit

#59
20080287251
2008-11-20

Power Transmission Device

#60
20080271444
2008-11-06

Return to neutral mechanism for hydraulic pump

#61
20080210482
2008-09-04

Hydraulic Drive Vehicle with Cooling System

#62
20080178587
2008-07-31

Anti-cavitation manifold for drive coupled, dual motor reversible hydraulic drive winding and unwinding systems

#63
20080155980
2008-07-03

Hydrostatic Stepless Transmission

#64
20080155979
2008-07-03

Hydrostatic stepless transmission

#65
20080120974
2008-05-29

INTEGRATED HYDROSTATIC TRANSMISSION FOR LEFT AND RIGHT WHEEL DRIVE

#66
20080115489
2008-05-22

Axle Driving Apparatus

#67
20080093191
2008-04-24

Variable Speed Drive

#68
20080053782
2008-03-06

Rotation apparatus having electromagnetic clutch

#69
20080053734
2008-03-06

Hydraulic drive vehicle

#70
20080034958
2008-02-14

Return to neutral for dual hydrostatic transmission

#71
20070277520
2007-12-06

HYDRAULIC MODULE WITH TWO INTEGRATED SWASHPLATE OR OBLIQUE AXIS DRIVE UNITS

#72
20070209355
2007-09-13

Pump unit and hydrostatic transmission

#73
20070204609
2007-09-06

Hyrdaulic transmission

#74
20070191178
2007-08-16

Power transmission system

#75
20070186549
2007-08-16

Working vehicle comprising a hydrostatic transmission

#76
20070163254
2007-07-19

Axle driving apparatus

#77
20070144168
2007-06-28

Axle driving apparatus

#78
20070144167
2007-06-28

Axle driving apparatus

#79
20070137194
2007-06-21

Axle driving apparatus

#80
20070130940
2007-06-14

Axle driving apparatus

#81
20070130939
2007-06-14

Axle driving apparatus

#82
20070119159
2007-05-31

Multi-actuator pressure-based flow control system

#83
20070095059
2007-05-03

Hydraulic system having pressure compensated bypass

#84
20070084203
2007-04-19

Axle driving apparatus

#85
20070028608
2007-02-08

Rotary hydraulic machine and controls

#86
20070022751
2007-02-01

Tandem axial piston pump unit

#87
20070006582
2007-01-11

Axle driving apparatus

#88
20070006581
2007-01-11

Pump unit

#89
20070006579
2007-01-11

Axle driving apparatus

#90
20060288697
2006-12-28

Axle driving apparatus

#91
20060272326
2006-12-07

Pump unit

#92
20060260303
2006-11-23

Power transmission system of hydraulically driven working vehicle

#93
20060250743
2006-11-09

Fault condition protection

#94
20060242956
2006-11-02

Hydraulic pump unit and working vehicle

#95
20060230751
2006-10-19

Electro-hydraulic system for fan driving and brake charging

#96
20060218910
2006-10-05

Hydraulic system for an air cart

#97
20060196180
2006-09-07

Method of creating feedback control in a closed hydrostatic circuit and a control system therefore

#98
20060185355
2006-08-24

Hydraulic gravitational load energy recuperation

#99
20060174616
2006-08-10

Static hydraulic continuously variable transmission

#100
20060174615
2006-08-10

Hydraulic transaxle

#101
20060174614
2006-08-10

Control devices for swashplate type variable displacement piston pump

#102
20060156717
2006-07-20

Hydraulic stepless speed changer and power transmission device

#103
20060144042
2006-07-06

Hydraulic power supply system

#104
20060112686
2006-06-01

Pump unit

#105
20060107660
2006-05-25

Pump unit and hydrostatic transmission

#106
20060104842
2006-05-18

Pump unit

#107
20060053783
2006-03-16

Throttle potentiometer adapter

#108
20060046859
2006-03-02

Torsional coupling

#109
20060032220
2006-02-16

Hydraulic kicker control piston

#110
20060005539
2006-01-12

Hydrostatic transaxle

#111
20050262838
2005-12-01

Hydraulic machine, system for monitoring health of hydraulic machine, and method thereof

#112
20050217262
2005-10-06

Hydrostatic transmission with pressure regulation means

#113
20050217260
2005-10-06

Electro-hydraulic fan drive cooling and steering system for vehicle

#114
20050210873
2005-09-29

Driving force distribution apparatus for right and left wheels

#115
20050178636
2005-08-18

Hydraulically controlled torque coupling device

#116
20050172621
2005-08-11

Control valve supply for rotary hydraulic machine

#117
20050160729
2005-07-28

Rotating fluid machine

#118
20050132703
2005-06-23

Rotating fluid machine

#119
20050109027
2005-05-26

Axle driving apparatus

#120
20050097887
2005-05-12

Dual check-relief valve

#121
20050016168
2005-01-27

Hydraulic drive system and improved control valve assembly therefor

#122
20050016167
2005-01-27

Hydraulic drive system and improved filter sub-system therefor

#123
20050016166
2005-01-27

Hydraulic drive system and improved filter sub-system therefor

#124
15784880
2020-02-11

Transmission assembly

#125
15490974
2018-03-13

Hydrostatic clutch system and method for making power under acceleration

#126
14590431
2016-10-18

Transaxle fluid expansion and contraction accommodation apparatus

#127
14195234
2014-12-30

Variable drive apparatus

#128
14020411
2016-04-19

Vehicle with pump assembly