ClassID:

146146

F15B20/004 - CPC Classification

Classification description:

Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems Fluid pressure supply failure

Recent Application in this class:
#1
20250320883
2025-10-16

Method and System for Controlling a Total Movement of a Distribution Boom, and Method for Distributing Construction Material and/or Thick Matter by Means of a Construction Material and/or Thick Matter Pump Device Having a Distribution Boom

#2
20250224040
2025-07-10

Lay Flat or Poly Hose Hydraulic Squeeze Off Tool

#3
20240384733
2024-11-21

A REDUNDANT HYDRAULIC SYSTEM

#4
20240141885
2024-05-02

Hydraulic pump performance deterioration detection system

#5
20240077091
2024-03-07

Hydraulic pump performance deterioration detection system

#6
20240076853
2024-03-07

SAFETY SYSTEM FOR MACHINE

#7
20220397134
2022-12-15

Control strategy for hydraulic system

#8
20220333349
2022-10-20

Hydraulic unit

#9
20220260094
2022-08-18

Hydraulic power system for downhole device and downhole device

#10
20220228609
2022-07-21

Power transfer unit with breakout friction reduction and leakage reduction

#11
20220145770
2022-05-12

Electrohydrostatic actution system, hydraulic circuit of electrohydrostatic actution system, and steam turbine system including same

#12
20220136498
2022-05-05

System and method for determining operational readiness of a backup hydraulic pump system

#13
20220081103
2022-03-17

Failsafe valve for geared rotary actuator

#14
20220025613
2022-01-27

Hydraulic system for a fall-back support and work machine

#15
20210381531
2021-12-09

Hydraulic system for use under water with a hydraulic actuating drive

#16
20210054835
2021-02-25

Using a load sense pump as a backup for a pressure-compensated pump

#17
20210025411
2021-01-28

Manual hydraulic override pumps for use with actuators

#18
20200386248
2020-12-10

Hydrostatically driven vehicle with a secondary braking or steering supply

#19
20200370570
2020-11-26

Device for supplying ports to a machine section of a hydraulic machine arrangement

#20
20200324810
2020-10-15

Hydraulic system and vehicle

#21
20200256479
2020-08-13

Steam valve driving apparatus

#22
20200248717
2020-08-06

Accumulator

#23
20200164970
2020-05-28

Hydraulic circuit for operating an aircraft landing gear

#24
20200103040
2020-04-02

System and method for protecting a pressure vessel from excessive differential pressure

#25
20190362861
2019-11-28

Inadvertent actuation block valve for a small modular nuclear reactor

#26
20190344885
2019-11-14

Actuator system for a fly-by-wire aircraft

#27
20190257328
2019-08-22

Electro-hydraulic control system with fail-safe pilot valves

#28
20190226355
2019-07-25

Methods and apparatus to diagnose a pneumatic actuator-regulating accessory

#29
20190217944
2019-07-18

Distributed trailing edge wing flap systems

#30
20190194998
2019-06-27

Pneumatic control system

#31
20190136867
2019-05-09

Control apparatus for a hydraulic variable-pitch propeller and propeller unit comprising a control apparatus of this kind

#32
20190113031
2019-04-18

Unload circuit

#33
20190078594
2019-03-14

Construction machine

#34
20190055965
2019-02-21

Hydraulic actuator and multi-cylinder hydraulic actuator system

#35
20180340552
2018-11-29

Pneumatic unit for a hydropneumatic pressure booster

#36
20180266607
2018-09-20

Joint device

#37
20180155044
2018-06-07

Method and apparatus for operating a power system architecture

#38
20180066416
2018-03-08

Hydraulic Drive System for work machine

#39
20170350426
2017-12-07

Hydraulic actuating drive having a spring for transferring into an emergency position

#40
20170327147
2017-11-16

Steering System for a Trailing Axle of a Vehicle

#41
20170191508
2017-07-06

Hydraulic apparatus and hydraulic appliance usable therein

#42
20170167603
2017-06-15

Abnormality detection device for hydraulic circuit and abnormality detection method for hydraulic circuit

#43
20170082212
2017-03-23

Control device for controlling a valve arrangement and method for controlling a safety arrangement comprising said control device and said valve arrangement

#44
20170023031
2017-01-26

Actuator

#45
20160215481
2016-07-28

Control system for hybrid construction machine

#46
20160178083
2016-06-23

Fluid-operated drive

#47
20160146231
2016-05-26

Hydraulic port safety locking device

#48
20160115976
2016-04-28

Actuator Assembly

#49
20150354604
2015-12-10

Hydraulic adjusting device

#50
20150152898
2015-06-04

DEVICE FOR EMERGENCY OPERATION OF ACTUATORS

#51
20150152887
2015-06-04

Fail-safe actuation system

#52
20150151421
2015-06-04

Control line operating system and method of operating a tool

#53
20150114215
2015-04-30

Coaxial dual redundant hydraulic actuator system

#54
20140345699
2014-11-27

Vent valve

#55
20140260953
2014-09-18

Spring return actuator

#56
20140151501
2014-06-05

Electro hydrostatic actuator system for retracting/extending landing gear

#57
20140026969
2014-01-30

Fail-safe actuation system

#58
20140000737
2014-01-02

Zonal hydraulic systems and methods

#59
20130014499
2013-01-17

Methods for safe operation of hydraulic hybrid vehicles with over-center pump/motors

#60
20120211685
2012-08-23

Pneumatic actuator air flow control system

#61
20120211681
2012-08-23

PNEUMATIC ACTUATOR AIR FLOW CONTROL SYSTEM

#62
20120024531
2012-02-02

Autochoke system

#63
20110290353
2011-12-01

Hydraulic system for aircraft actuators

#64
20110239855
2011-10-06

Single effect hydraulic cylinder

#65
20110226124
2011-09-22

Pneumatic actuator structure

#66
20110155937
2011-06-30

Apparatus to increase a force of an actuator having an override apparatus

#67
20100037762
2010-02-18

VALVE DEVICE AND METHOD FOR THE ACTIVATION OF AN ACTUATING DRIVE ACTED UPON WITH PRESSURE MEDIUM BY A POSITION CONTROLLER

#68
20090272110
2009-11-05

Local backup hydraulic actuator for aircraft control systems

#69
20090242694
2009-10-01

Hydraulic system for aircraft

#70
20080236932
2008-10-02

Actuator control system

#71
20080203234
2008-08-28

Trim actuator actuating system for a hydraulically actuatable trimmable horizontal stabilizer actuator

#72
20080087766
2008-04-17

Architecture for a hydraulic system for operating aircraft landing gear

#73
20080087765
2008-04-17

Architecture for a hydraulic system for operating aircraft landing gear

#74
20080017022
2008-01-24

HYDRAULIC CONTROL SYSTEM FOR WORKING MACHINE

#75
20070217898
2007-09-20

Access method and apparatus that limit motion according to load and position

#76
20070044647
2007-03-01

Hydraulic switching mechanism for longwall supports

#77
20060226285
2006-10-12

Local backup hydraulic actuator for aircraft control systems

#78
20060131123
2006-06-22

Hydraulic system having an emergency release mechanism for a clutch having servo-assisted pedal actuation

#79
20060049688
2006-03-09

Device for the emergency lowering of a load-carrying means for a stacker truck

#80
20050204912
2005-09-22

Hydraulic control system for working machine

#81
20050188687
2005-09-01

Actuator

#82
20050166750
2005-08-04

Assembly for a chassis stabilizing system

#83
20050132877
2005-06-23

Redundant flow control for hydraulic actuator systems

#84
20050072397
2005-04-07

Control device for at least one consumer, such as a camshaft adjuster, automatic transmission and the like, of motor vehicles

#85
20050056146
2005-03-17

Actuator having both a hydraulic mode and a mechanical mode of operation

#86
20050029053
2005-02-10

Lifting system

#87
20050011188
2005-01-20

Electro-hydrostatic actuator with a failsafe system