ClassID:

146500

F15B2211/8636 - CPC Classification

Classification description:

Circuits for servomotor systems; Other types of control related to particular problems or conditions; Control during or prevention of abnormal conditions the abnormal condition being a hydraulic or pneumatic failure Circuit failure, e.g. valve or hose failure

Recent Application in this class:
#1
20260009408
2026-01-08

HYDRAULIC FORCE FIGHT MITIGATION

#2
20250012302
2025-01-09

EMERGENCY DESCENT SYSTEM FOR AERIAL WORK PLATFORM AND CONTROL METHOD THEREOF

#3
20230349401
2023-11-02

REDUNDANT VALVE MANIFOLD SYSTEM

#4
20230174354
2023-06-08

LIFTING MECHANISM

#5
20230160403
2023-05-25

DEPLOYABLE ENERGY SUPPLY AND MANAGEMENT SYSTEM

#6
20230151829
2023-05-18

HYDRAULIC FORCE FIGHT MITIGATION

#7
20220397134
2022-12-15

Control strategy for hydraulic system

#8
20220390324
2022-12-08

Establishing termination criteria for a partial-stroke test of a fluid driven safety valve, and determining the proper functioning of a fluid driven safety valve

#9
20220341441
2022-10-27

Safety module for a process valve and system

#10
20210364017
2021-11-25

Redundant valve manifold system

#11
20210285470
2021-09-16

Automatic air bleeding system for hydraulics

#12
20210285466
2021-09-16

Redundant electrohydraulic positioning control system

#13
20210262494
2021-08-26

Valve with anti-cavitation features

#14
20210131459
2021-05-06

Valve device and method for anticipating failure in a solenoid valve assembly in a manifold assembly

#15
20200340504
2020-10-29

Prediction of hydraulic pump health and failure

#16
20200292100
2020-09-17

Spool valve device and spool valve

#17
20200291971
2020-09-17

Hydraulic system

#18
20200278042
2020-09-03

METHOD AND APPARATUS FOR DEACTIVATING A HYDRAULIC DEVICE THAT IS LEAKING HYDRAULIC OIL

#19
20200271231
2020-08-27

Valve, hydraulic system and motor vehicle gearbox

#20
20200240444
2020-07-30

Valve arrangement and control method

#21
20200030149
2020-01-30

Redundant pneumatic circuit for reliability enhancement of vitrectomy instruments

#22
20200003239
2020-01-02

Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems

#23
20190309842
2019-10-10

Method for operating a pneumatic actuating system of a transmission and control device for carrying out the method

#24
20190264715
2019-08-29

Line rupture safeguard for a hydraulic cylinder

#25
20190257328
2019-08-22

Electro-hydraulic control system with fail-safe pilot valves

#26
20190249798
2019-08-15

Determining the operability of a fluid driven safety valve

#27
20190249692
2019-08-15

Hydraulic valve assembly with forced circuit

#28
20190186510
2019-06-20

Leakage modulation in hydraulic systems containing a three-way spool valve

#29
20190161983
2019-05-30

Large manipulator with decentralized hydraulic system

#30
20190161172
2019-05-30

MODE VALVE ASSEMBLY

#31
20190119934
2019-04-25

Electrohydraulic control circuit for a large manipulator

#32
20190106300
2019-04-11

Crane

#33
20190061916
2019-02-28

Dual valve systems for actuator control

#34
20180347599
2018-12-06

VALVE DEVICE

#35
20180299019
2018-10-18

Contamination resistant poppet valve

#36
20180298923
2018-10-18

Fluid control device and method for operating a fluid control device

#37
20180112797
2018-04-26

Methods and apparatus of assessing a test of a solenoid valve via a positioner

#38
20180103018
2018-04-12

Systems and methods for executing cryptographic operations across different types of processing hardware

#39
20170350524
2017-12-07

Control valve device

#40
20170204886
2017-07-20

Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems

#41
20170058921
2017-03-02

Automatic oil spill detection system

#42
20160288771
2016-10-06

Electropneumatic windshield wiper drive for a rail vehicle, drive for a windshield wiper and pneumatic system for operating a drive for a windshield wiper

#43
20160258452
2016-09-08

Method and system for generating an alert relating to a hydraulic actuation system

#44
20160258450
2016-09-08

Control apparatus

#45
20160146231
2016-05-26

Hydraulic port safety locking device

#46
20160084271
2016-03-24

Method to detect hydraulic valve failure in hydraulic system

#47
20160084270
2016-03-24

Electrohydraulic control circuit

#48
20160002886
2016-01-07

Pilot pressure control system

#49
20150286205
2015-10-08

System and method for controlling a valve

#50
20150198183
2015-07-16

Failsafe pilot supply selector valve

#51
20150184362
2015-07-02

Slewing-type working machine

#52
20150176612
2015-06-25

Double hydraulic valve of a servo-control for feathering the blades of a rotorcraft rotor

#53
20150083260
2015-03-26

Solenoid valve system

#54
20150040549
2015-02-12

Method and control unit for the operation of a parking brake of a vehicle transmission assembly

#55
20140360349
2014-12-11

Hydraulic cylinder for use for example in a hydraulic tool

#56
20140266711
2014-09-18

Wireless gas condition monitoring device

#57
20140264106
2014-09-18

Flow rate control device

#58
20140190158
2014-07-10

Hydraulic circuit, and combination valve used in same hydraulic circuit

#59
20140174550
2014-06-26

Fault isolation and decontamination procedures for electrohydraulic valves

#60
20140099212
2014-04-10

Automatic oil spill detection system

#61
20140034135
2014-02-06

Hydraulic system with a dynamic seal

#62
20140034133
2014-02-06

Dynamic seal wear mitigation system

#63
20140026747
2014-01-30

Hydraulic or pneumatic drive for actuating a fitting comprising a control valve or selector valve

#64
20140018964
2014-01-16

Valve contamination dislodgement

#65
20130199619
2013-08-08

Method and apparatus for deactivating a hydraulic device that is leaking hydraulic oil

#66
20120216898
2012-08-30

Methods and apparatus for bypassing a positioner in an active control loop

#67
20120216877
2012-08-30

Electro-hydraulic sensor fail safe

#68
20120104294
2012-05-03

Valve Array with CAN Bus Circulation Valve

#69
20110290353
2011-12-01

Hydraulic system for aircraft actuators

#70
20110284241
2011-11-24

Overriding a primary control subsystem of a downhole tool

#71
20110179783
2011-07-28

Device to actively control the vibrations of an articulated arm to pump concrete

#72
20110088785
2011-04-21

SAFETY FEATURE FOR STUCK VALVE

#73
20100100274
2010-04-22

Safety device for hydraulic working machine

#74
20100096576
2010-04-22

VALVE BLEED SYSTEM

#75
20100078089
2010-04-01

Hydraulic trip unit for a valve unit in a prime mover plant, especially for a fast-acting shut-off valve of a turbine plant

#76
20100030496
2010-02-04

Leakage detection and fluid level prognostics for aircraft hydraulic systems

#77
20090283276
2009-11-19

Overriding a primary control subsystem of a downhole tool

#78
20090165457
2009-07-02

Double redundancy electro hydrostatic actuator system

#79
20090114284
2009-05-07

Detecting of faults in a valve system and a fault tolerant control

#80
20090095365
2009-04-16

Valve block, tool attachment, a working machine and the use of a valve block

#81
20080236932
2008-10-02

Actuator control system

#82
20080230127
2008-09-25

Actuator position control device using a fail freeze servo-valve

#83
20080185476
2008-08-07

Dual motor dual concentric valve

#84
20080087766
2008-04-17

Architecture for a hydraulic system for operating aircraft landing gear

#85
20080087765
2008-04-17

Architecture for a hydraulic system for operating aircraft landing gear

#86
20080078456
2008-04-03

HYDROSTATIC VARIABLE UNIT WITH A SERVO SYSTEM AND A VALVE UNIT CONTROLLING THE SERVO SYSTEM

#87
20080072749
2008-03-27

Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve

#88
20070119298
2007-05-31

Shifting unit

#89
20070044651
2007-03-01

Valve arrangement for the activation of a structural element

#90
20060191583
2006-08-31

Hydraulic control valve

#91
20060090802
2006-05-04

Valve arrangement

#92
20050274419
2005-12-15

Valve arrangement

#93
20050132877
2005-06-23

Redundant flow control for hydraulic actuator systems

#94
20050072144
2005-04-07

Hydraulic arrangement and process for its use