ClassID:

142645

F04B1/295 - CPC Classification

Classification description:

Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis; Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate

Recent Application in this class:
#1
20250389285
2025-12-25

HYDRAULIC SYSTEM

#2
20250369505
2025-12-04

A LINEAR SELF-ADJUSTABLE COMPRESSION PUMP COMPRISING A GYROSCOPIC TORQUE CONVERTER WITH CENTRIFUGAL FREELY SLIDING PRECESSION ARM

#3
20250347268
2025-11-13

MECHANISM FOR ELECTRONIC ADJUSTMENT OF FLOWS IN FIXED DISPLACEMENT PUMP

#4
20250146515
2025-05-08

Method for Operating an Axial Piston Machine in Which a Zero Case is Taken into Account

#5
20250146495
2025-05-08

Flexible Pump Assembly for Use in a Fan Drive

#6
20250027515
2025-01-23

ELECTROHYDRAULIC CONTROL DEVICE AND ADJUSTABLE HYDRAULIC PUMP SYSTEM

#7
20240287971
2024-08-29

Method for Determining Control Model Parameters of a Control Model of an Axial Piston Pump

#8
20240218860
2024-07-04

MECHANISM FOR ELECTRONIC ADJUSTMENT OF FLOWS IN FIXED DISPLACEMENT PUMP

#9
20240218859
2024-07-04

MECHANISM FOR ELECTRONIC ADJUSTMENT OF FLOWS IN FIXED DISPLACEMENT PUMP

#10
20240209873
2024-06-27

Electro-hydraulic power unit with variable output flow

#11
20240183352
2024-06-06

VARIABLE DISPLACEMENT PUMPS WITH FIXED AND ACTIVE DISPLACEMENT CONTROL MODES

#12
20240151216
2024-05-09

Piston assembly

#13
20240052816
2024-02-15

ADJUSTING DEVICE FOR AN AXIAL PISTON MACHINE

#14
20240003344
2024-01-04

HYDROSTATIC VARIABLE DISPLACEMENT AXIAL PISTON UNIT AND DISPLACEMENT VOLUME SETTING DEVICE

#15
20230304468
2023-09-28

SERVO SYSTEM BOLTED ON DESIGN

#16
20230279879
2023-09-07

Electrohydraulic control device and adjustable hydraulic pump system

#17
20230151806
2023-05-18

Variable displacement hydraulic pump

#18
20230125840
2023-04-27

Variable displacement pumps

#19
20220372968
2022-11-24

VARIABLE DISPLACEMENT METERING PUMP SYSTEM WITH MULTIVARIATE FEEDBACK

#20
20220372967
2022-11-24

On-demand dual variable displacement positive displacement pumping system

#21
20220333586
2022-10-20

Tilt linkage for variable stroke pump

#22
20220213884
2022-07-07

Mechanism for electronic adjustment of flows in fixed displacement pump

#23
20220025875
2022-01-27

Compressor

#24
20220018339
2022-01-20

Variable stroke pump

#25
20210382444
2021-12-09

Method for teaching the control function of hydrostatic motors when in drive mode

#26
20210317827
2021-10-14

Control arrangement for variable displacement pump

#27
20210156378
2021-05-27

Pump having a passage extending between a cam plate oil reservoir and a bearing oil reservoir

#28
20210140415
2021-05-13

Variable stroke pump

#29
20210115910
2021-04-22

Torque control system for a variable displacement pump

#30
20210048018
2021-02-18

Capacity control valve having a solenoid and a second plunger between the solenoid and a valve body

#31
20210047928
2021-02-18

Variable displacement hydraulic unit and method for operating the hydraulic unit

#32
20200385054
2020-12-10

Differential steering control vehicle, system and method

#33
20200332782
2020-10-22

AXIAL PISTON DEVICE

#34
20200132069
2020-04-30

Hydrostatic piston machine

#35
20200056580
2020-02-20

Manual displacement control arrangement for an axial piston pump

#36
20200025193
2020-01-23

Method for operating a hydraulic consumer on an electrically actuated control valve

#37
20190360482
2019-11-28

Axial piston machine with recess in the region of the loading pressure channel

#38
20190257304
2019-08-22

Hydraulic drive system of construction machine

#39
20190145389
2019-05-16

Adjusting device for an axial piston machine

#40
20190113028
2019-04-18

Rotatable piston assembly

#41
20180347327
2018-12-06

Lift apparatus for driving a downhole reciprocating pump

#42
20180223816
2018-08-09

Pump

#43
20180135605
2018-05-17

Method for operating an axial piston machine of swashplate design

#44
20180119391
2018-05-03

Hydraulic drive system of construction machine

#45
20180100482
2018-04-12

Hydroelectric power system and pump

#46
20180045185
2018-02-15

Torque control system for a variable displacement pump

#47
20180002007
2018-01-04

Duplicated hydraulic circuit with pressure regulation

#48
20170350376
2017-12-07

HYDRAULIC PUMP

#49
20170284381
2017-10-05

DOUBLE- HEADED PISTON TYPE SWASH PLATE COMPRESSOR

#50
20170218929
2017-08-03

Hydraulic transaxle

#51
20170211555
2017-07-27

VARIABLE CAPACITY PISTON PUMP

#52
20170159641
2017-06-08

Variable displacement pump-motor

#53
20170089332
2017-03-30

Pump-regulator combination with power limitation

#54
20170089039
2017-03-30

ENGINE CONTROL DEVICE OF HYBRID WORK MACHINE, HYBRID WORK MACHINE, AND ENGINE CONTROL METHOD OF HYBRID WORK MACHINE

#55
20170082093
2017-03-23

Controller and system for utility vehicle

#56
20170037790
2017-02-09

DEVICE FOR CONTROLLING ENGINE AND HYDRAULIC PUMP OF CONSTRUCTION EQUIPMENT AND CONTROL METHOD THEREFOR

#57
20170002874
2017-01-05

Clutch device with fully integrated hydraulics

#58
20160363117
2016-12-15

Electronic torque and pressure control for load sensing pumps

#59
20160348672
2016-12-01

AXIAL PISTON DEVICE

#60
20160332509
2016-11-17

Fluid delivery system

#61
20160252080
2016-09-01

VARIABLE DISPLACEMENT PUMP

#62
20160153432
2016-06-02

Pump

#63
20160146202
2016-05-26

OVERSHOOT REDUCTION ON PUMP CONTROLS

#64
20160131119
2016-05-12

Pump device

#65
20160069342
2016-03-10

Valve plate arrangement for an axial piston pump

#66
20160003237
2016-01-07

PUMP DISCHARGE FLOW-RATE CONTROL DEVICE

#67
20150275875
2015-10-01

Variable displacement swash plate type compressor

#68
20150226209
2015-08-13

Variable displacement compressor and expander

#69
20150211502
2015-07-30

Swash plate type variable displacement compressor

#70
20150211501
2015-07-30

Tilting angle control device

#71
20150159645
2015-06-11

Variable displacement swash plate type compressor

#72
20150125317
2015-05-07

Swash plate type variable displacement compressor

#73
20150118073
2015-04-30

Variable displacement compressor and swash place linkage connection

#74
20150044067
2015-02-12

Variable displacement swash plate type compressor

#75
20140369862
2014-12-18

Double-headed piston type swash plate compressor

#76
20140363316
2014-12-11

Remanufactured Hydraulic Device, Housing And Remanufacturing Method

#77
20140328700
2014-11-06

Swash plate pump having control pins in series

#78
20140294612
2014-10-02

Variable displacement swash plate compressor

#79
20140147298
2014-05-29

Adjusting device for a hydraulic machine, and hydraulic axial piston machine

#80
20130343920
2013-12-26

Variable displacement swash plate type compressor

#81
20130239796
2013-09-19

Hydrostatic axial piston machine

#82
20130001450
2013-01-03

Control valve for variable displacement compressor

#83
20120275933
2012-11-01

Hydraulic apparatus return to neutral mechanism

#84
20110131968
2011-06-09

Method for controlling a pump and motor system

#85
20110088545
2011-04-21

Hydraulic actuator unit

#86
20110014062
2011-01-20

Control device of hydraulically driven fan

#87
20100278463
2010-11-04

Swashplate-type pivot bearing and axial piston machine

#88
20100172766
2010-07-08

Variable displacement piston machine with a sensor

#89
20100158706
2010-06-24

Pressure change compensation arrangement for pump actuator

#90
20100150741
2010-06-17

HYDRAULIC UNIT HAVING ORIFICE PLATE DISPLACEMENT CONTROL

#91
20070144341
2007-06-28

PISTON ASSEMBLY

#92
20060110265
2006-05-25

Pump and cleaning apparatus comprising said pump

#93
20060021499
2006-02-02

Oscillating device for adjusting the displacement of a fluid pump

#94
20050238501
2005-10-27

Revolving yoke load-sensitive displacement-varying mechanism for axial piston hydraulic pump

#95
20050207907
2005-09-22

Piston waveform shaping

#96
20050118049
2005-06-02

Variable stroke assembly balancing

#97
20050076777
2005-04-14

Piston engine balancing

#98
20050005763
2005-01-13

Piston assembly

#99
17832238
2023-10-03

Compressor

#100
17816564
2024-02-13

Electric actuator and vibration damping apparatus for drive apparatus

#101
14172171
2017-10-31

Low friction compact servo piston assembly

#102
13368198
2015-08-18

Continuously variable displacement engine