ClassID:

148532

F16D2048/0212 - CPC Classification

Classification description:

External control of clutches; Control by fluid pressure Details of pistons for master or slave cylinders especially adapted for fluid control

Recent Application in this class:
#1
20250327494
2025-10-23

CLUTCH UNIT FOR REVERSIBLY COUPLING A DRIVE SIDE TO AN OUTPUT SIDE OF A DRIVE TRAIN, AND ACTUATOR FOR A CLUTCH UNIT OF THIS TYPE

#2
20240093779
2024-03-21

Method for controlling a hydraulic unit in particular for a drivetrain of a motor vehicle, hydraulic unit and drivetrain with hydraulic unit

#3
20220009467
2022-01-13

OPPOSED HIGH PRESSURE HYDRAULIC SYSTEM

#4
20210088143
2021-03-25

Seal having a lip optimized for low temperature applications

#5
20210040996
2021-02-11

Wet clutch actuation piston and method of use

#6
20200018364
2020-01-16

Clutch connecting/disconnecting device

#7
20190242443
2019-08-08

Clutch mechanism and piston

#8
20190225208
2019-07-25

Opposed high pressure hydraulic system

#9
20190186559
2019-06-20

Hydraulic control system of double piston clutch unit for automatic transmission

#10
20190178305
2019-06-13

Clutching device of an automatic transmission

#11
20190001948
2019-01-03

Electric booster

#12
20180335096
2018-11-22

System and method for controlling engine clutch

#13
20180252214
2018-09-06

Hydraulic Pump with Integrated Clutch

#14
20180231073
2018-08-16

Clutch control

#15
20180215258
2018-08-02

Clutch drive unit and straddle type vehicle

#16
20180149209
2018-05-31

Wet clutch actuation piston and method of use

#17
20170204916
2017-07-20

Starting element, gearbox and drive train with the start element

#18
20170051796
2017-02-23

Dual piston actuator

#19
20170037881
2017-02-09

Hydraulic cylinder, particularly slave cylinder for a hydraulic clutch actuating system for motor vehicles

#20
20160363180
2016-12-15

Hydraulic system for a vehicle

#21
20160280199
2016-09-29

Opposed high pressure hydraulic system

#22
20160273621
2016-09-22

Multi-stage transmission

#23
20160244053
2016-08-25

Hybrid system

#24
20160195112
2016-07-07

Piston-cylinder unit and method for operating same

#25
20160084321
2016-03-24

Hydraulic pump with integrated clutch

#26
20160053825
2016-02-25

Hydraulic system with a dog clutch

#27
20160025156
2016-01-28

Disconnect clutch with positive plate separation

#28
20160010706
2016-01-14

Method for operating a hydraulic disc coupling in an AWD vehicle and a coupling therefore

#29
20150308517
2015-10-29

Fluid actuated over-center clutch for a PTO

#30
20150051800
2015-02-19

Automatic transmission control method, control device, and automatic transmission system

#31
20150001032
2015-01-01

Piston-cylinder arrangement and operating device having a piston-cylinder arrangement

#32
20140345553
2014-11-27

Starting element

#33
20140110209
2014-04-24

Clutch housing and assembly

#34
20140083810
2014-03-27

Hydraulic system for double piston

#35
20140080664
2014-03-20

Hybrid system

#36
20140076681
2014-03-20

Slave cylinder for a vibration-damped hydraulic force transmission system, particularly a hydraulic clutch actuating system for motor vehicles

#37
20140034441
2014-02-06

Hydraulic section having a ventilating device

#38
20130313063
2013-11-28

Driving force transmission device

#39
20130206539
2013-08-15

Transmission shifting element decelerator

#40
20130192948
2013-08-01

Drivetrain-clutch arrangement and fluid cylinder therefor

#41
20130161146
2013-06-27

Two stage piston for faster clutch apply

#42
20130140127
2013-06-06

Seal with pressure-actuatable sealing bead

#43
20130081920
2013-04-04

HYDRAULIC CLUTCH

#44
20130075216
2013-03-28

Hydraulic clutch

#45
20130059695
2013-03-07

Driving force transmission device

#46
20120318630
2012-12-20

Vehicle driving apparatus

#47
20120258838
2012-10-11

Hybrid system

#48
20120247913
2012-10-04

Multi-disc frictional engagement mechanism

#49
20120241280
2012-09-27

Multi-disc frictional engagement mechanism

#50
20120186443
2012-07-26

PISTON ASSEMBLY WITH A STAMPED ORIFICE

#51
20120149519
2012-06-14

Transmission assembly having variable force clutch

#52
20120145511
2012-06-14

Centrifugally balanced hydraulic clutch assembly

#53
20120124991
2012-05-24

METHOD AND APPARATUS FOR LEVER STROKE ADJUSTMENT

#54
20120073931
2012-03-29

CLUTCH APPARATUS FOR AUTOMATIC TRANSMISSION

#55
20120031725
2012-02-09

Torque transmission unit

#56
20110308911
2011-12-22

Torque transmitting device with apply plate drain

#57
20110308909
2011-12-22

Power transmitting apparatuses

#58
20110290612
2011-12-01

Clip seal with integrated return spring

#59
20110221292
2011-09-15

FRICTION COUPLING DEVICE

#60
20110220451
2011-09-15

Dry clutch

#61
20110168015
2011-07-14

ETHYLENE-ACRYLIC BONDED PISTON WITHOUT OVEN POST CURING

#62
20110143876
2011-06-16

Automatic transmission for a vehicle

#63
20110127135
2011-06-02

Idle-able auxiliary drive system

#64
20110108384
2011-05-12

Positively engaging shifting element which can be hydraulically or pneumatically actuated

#65
20110100771
2011-05-05

Opposed high pressure hydraulic system

#66
20100325856
2010-12-30

Apparatus and method of assembling a piston on a shaft over a lip seal

#67
20100304912
2010-12-02

Transmission with mechanically-biased clutch

#68
20100279810
2010-11-04

Transmission clutch assembly

#69
20100261574
2010-10-14

Automatic transmission with normally engaged disc clutches

#70
20100200355
2010-08-12

Seal structure

#71
20100200353
2010-08-12

Two-way actuator device in a torque transmitting assembly

#72
20100193314
2010-08-05

Housing-piston assembly for a coupling device and assembly method

#73
20100181158
2010-07-22

Slave cylinder for a vibration-damped hydraulic force transmission system, particularly a hydraulic clutch actuating system for motor vehicles

#74
20100140038
2010-06-10

Piston apparatus of automatic transmission

#75
20100126819
2010-05-27

Wave spring holding structure and frictional engagement apparatus

#76
20100108459
2010-05-06

Multiple disc clutch apparatus

#77
20100084241
2010-04-08

Friction engagement apparatus

#78
20100072015
2010-03-25

Manufacturing method of clutch for automatic transmission and automatic transmission

#79
20100038201
2010-02-18

Combined power transmission, drive unit and drive train for a hybrid system

#80
20100032260
2010-02-11

FRICTIONAL ENGAGEMENT DEVICE FOR AUTOMATIC TRANSMISSION

#81
20100025937
2010-02-04

Sealing device

#82
20100025180
2010-02-04

Twin clutch device

#83
20090289450
2009-11-26

Rotational coupling device with sealed key

#84
20090288927
2009-11-26

Multi-area clutch assembly

#85
20090283972
2009-11-19

Bonded piston seal

#86
20090283379
2009-11-19

Friction device for automatic transmission

#87
20090275441
2009-11-05

Flow accumulator and clutch control system for automatic transmissions

#88
20090235815
2009-09-24

PISTON WITH BUILT-IN SEAL

#89
20090211862
2009-08-27

Clutch with dual area piston and independent pressure control

#90
20090188768
2009-07-30

Frictional engaging piston and spring seat

#91
20090188765
2009-07-30

Clutch device

#92
20090170652
2009-07-02

Speed change apparatus

#93
20090140498
2009-06-04

Sealing Device

#94
20090114501
2009-05-07

Frictional engagement device

#95
20090071786
2009-03-19

Torque damper

#96
20090065323
2009-03-12

Hydraulic actuating system for a motor vehicle clutch

#97
20090057092
2009-03-05

Clutch hydraulic system for vehicle and hydraulic system

#98
20090056871
2009-03-05

METHOD FOR PRODUCING STEEL COMPONENT INTEGRALLY HAVING RUBBER PORTION

#99
20090038906
2009-02-12

SEAL INTEGRAL TYPE PISTON

#100
20090032366
2009-02-05

PISTON FOR AUTOMATIC TRANSMISSION

#101
20080314711
2008-12-25

Clutch and brake latch mechanism

#102
20080293543
2008-11-27

Device for operating a shifting element of a drive mechanism

#103
20080277231
2008-11-13

Multi-disk clutch

#104
20080277228
2008-11-13

Sealing system and wet-running dual-clutch system with a sealing system

#105
20080235931
2008-10-02

Apparatus and method of assembling a piston on a shaft over a lip seal

#106
20080190283
2008-08-14

System and Method for Mounting and Demounting Cylinder Unit in Vehicle

#107
20080142326
2008-06-19

Clutch master cylinder and clutch operating system of vehicle

#108
20080093195
2008-04-24

Clutch assembly with centrifugal head pressure control

#109
20080028923
2008-02-07

HYDRAULIC STROKING DEVICE, PLANETARY GEAR AUTOMATIC TRANSMISSION, AND CLUTCH APPARATUS

#110
20080017469
2008-01-24

AUTOMATIC TRANSMISSION

#111
20080011577
2008-01-17

Hydraulic actuator for a vehicular power train

#112
20080008591
2008-01-10

Seal for torque converter lockup clutch

#113
20070288178
2007-12-13

Ultrasound Imaging Method of Extracting a Flow Signal

#114
20070205072
2007-09-06

Hydraulic clutch control system, comprising servo means which are disposed between the master cylinder and the slave cylinder of the system

#115
20070114105
2007-05-24

Hydraulic clutch actuation system

#116
20070080040
2007-04-12

Coupling device of a motor vehicle

#117
20070007097
2007-01-11

Hydraulic clutch actuation system

#118
20060289267
2006-12-28

Hydraulic pressure control valve

#119
20060201772
2006-09-14

Multi-plate clutch

#120
20060201325
2006-09-14

Piston for automatic transmission

#121
20060163022
2006-07-27

Multiple disc clutch apparatus

#122
20060116237
2006-06-01

Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch

#123
20060096452
2006-05-11

Piston arrangement of a hydraulic actuating device on motor vehicles

#124
20060090643
2006-05-04

Piston for automatic transmission

#125
20060065509
2006-03-30

Self bleeding system

#126
20060054444
2006-03-16

Dual area piston for transmission clutch and sequential control therefor

#127
20060011442
2006-01-19

Hydraulic clutch

#128
20050284724
2005-12-29

Clutch piston amplifier assembly

#129
20050284723
2005-12-29

Alternative pack designs for multidisk clutches

#130
20050279605
2005-12-22

Rotating torque-transmitting apparatus

#131
20050252209
2005-11-17

Pressure-limiting device in a hydraulic path for clutch actuation

#132
20050229773
2005-10-20

Hydraulic cylinder, in particular master cylinder for a hydraulic clutch actuation system for motor vehicles

#133
20050081521
2005-04-21

Master cylinder

#134
20050006195
2005-01-13

Hydraulic system

#135
18212489
2024-04-16

Clutch actuating device

#136
17075998
2021-11-30

Method for controlling clutch actuator for automated manual transmission

#137
14665443
2015-10-06

Control system for operating a manual clutch