146507 ⎘
Circuits for servomotor systems; Other types of control related to particular problems or conditions; Control measures for coping with failures Emergency operation mode, e.g. fail-safe operation mode
ACTUATOR ASSEMBLY AND METHOD OF USE
#2DUAL ELECTRICAL POWER SUPPLIES FOR A HYDRAULIC ACTUATOR SYSTEM
#3HYDRAULIC BRAKING ENERGY UTILIZATION FOR EMERGENCY STEERING, BRAKING, CHARGING ACCUMULATOR(S), AND/OR WORK FUNCTIONS TO REDUCE OR PREVENT ENGINE FROM OVERSPEED, ASSIST ACCELERATION AND/OR UNLIMITED TOWING
#4Emergency isolation valve control design
#5Hydraulic actuator including a multi-head piston for hydraulic gearing
#6Hydraulic actuator including a multi-head piston for hydraulic gearing
#7Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing
#8System and methods for controlled lowering and lifting of a load
#9Method for testing the functionality of a solenoid valve for triggering a safety valve
#10Electrohydraulic system for a valve
#11Establishing termination criteria for a partial-stroke test of a fluid driven safety valve, and determining the proper functioning of a fluid driven safety valve
#12Partial stroke tests for shutdown valves
#13Method and apparatus for conversion of a pneumatic actuator to an electric power platform
#14Failsafe valve for geared rotary actuator
#15Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing
#16Method and system to securely manage quick coupling of tools in an earth moving equipment
#17Failsafe electro-hydraulic servo valve
#18Method and apparatus for conversion of single-acting pneumatic actuator to electric power platform
#19Using a load sense pump as a backup for a pressure-compensated pump
#20Vent limiting device for use with fluid regulators
#21Spool valve device and spool valve
#22Valve, hydraulic system and motor vehicle gearbox
#23System and methods for controlled lowering and lifting of a load
#24Blow down actuator assembly
#25Vent limiting device for use with fluid regulators
#26Apparatus for controlling a hydraulic machine
#27Partial stroke tests for shutdown valves
#28Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems
#29ELECTRO-HYDRAULIC VALVE ACTUATOR HAVING MODULAR MANIFOLD WITH CONFIGURABLE REDUNDANCY
#30Electro-hydraulic control system with fail-safe pilot valves
#31Determining the operability of a fluid driven safety valve
#32Hydraulic valve assembly with forced circuit
#33Methods and apparatus to diagnose a pneumatic actuator-regulating accessory
#34Pneumatic control system
#35Servo control, rotor and aircraft
#36Hydraulic braking emergency utilization for steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing
#37Dual valve systems for actuator control
#38Hydraulic actuator and multi-cylinder hydraulic actuator system
#39Generating two pneumatic signals to operate an actuator on a valve assembly
#40Pneumatic unit for a hydropneumatic pressure booster
#41Fail-fixed hydraulic actuator
#42Valve system
#43SYSTEM FOR CONTROLLING A FLOW OF FLUID, FEEDING SYSTEM COMPRISING SUCH A CONTROL SYSTEM AND METHOD USING SUCH A FEEDING SYSTEM
#44Hydraulic metering system for downhole hydraulic actuation
#45Safe-to-operate hydraulic drive
#46Rotary actuator with position feedback device and process valve module
#47Method and apparatus for operating a power system architecture
#48Blow down actuator assembly having a drag brake
#49Rotary drive having a position detection device and calibration method
#50Drain valve
#51Blow down actuator assembly
#52Hydraulic actuating drive having a spring for transferring into an emergency position
#53Valve arrangement
#54Steering System for a Trailing Axle of a Vehicle
#55Integrated transducer
#56Failsafe integrated transducer
#57Testing of safety devices
#58Methods and apparatus to enable boom bounce reduction and prevent un-commanded motion in hydraulic systems
#59Pneumatic volume booster
#60Apparatus and methods for manual override of hydraulic choke or valve actuators
#61Failsafe system and method for reducing load in a hydraulic cylinder
#62Automatic oil spill detection system
#63Online sensor calibration for electrohydraulic valves
#64FAIL FIXED ACTUATOR
#65Control apparatus
#66Control system for hybrid construction machine
#67System for estimating a sensor output
#68Blow down actuator assembly
#69Servo-control and an aircraft having such a servo-control
#70Actuator Assembly
#71Hydraulic actuator lockout
#72Pilot pressure control system
#73Hydraulic adjusting device
#74Turbine valve actuator
#75Pneumatic positioning system
#76Double hydraulic valve of a servo-control for feathering the blades of a rotorcraft rotor
#77Fail-safe actuation system
#78Wind energy system with a pitch adjustment system
#79Control line operating system and method of operating a tool
#80Solenoid valve system
#81Four-chamber cylinder for a hydraulic actuating device with emergency function and hydraulic actuating device having this
#82Hydraulic cylinder for use for example in a hydraulic tool
#83Actuator device for aircraft, and aircraft
#84Hydrostatic variable displacement pump which can be set in either direction of displacement
#85Telescoping fluid porting tube
#86Spring return actuator
#87Hydraulic safety and movement control system
#88Fail operational modes for an electro-hydraulic system
#89Online sensor calibration for electrohydraulic valves
#90Automatic oil spill detection system
#91Hydraulic control system having swing energy recovery
#92Electropneumatic position regulator
#93Hydraulic system with a dynamic seal
#94Fail-safe actuation system
#95Zonal hydraulic systems and methods
#96Hydraulic system for construction machine having electronic hydraulic pump
#97Hydraulic system for construction machine including emergency control unit for electric hydraulic pump
#98Valve positioning system with bleed prevention
#99Landing gear retraction/extension device of aircraft
#100Methods for safe operation of hydraulic hybrid vehicles with over-center pump/motors
#101Poppet valve assembly for controlling a pneumatic actuator
#102Methods and apparatus for bypassing a positioner in an active control loop
#103Autochoke system
#104Aircraft actuator hydraulic system
#105Overriding a primary control subsystem of a downhole tool
#106Fail-freeze device for positioner
#107Method for determining an operating position of an open/closed-valve and field device
#108Control system for swashplate pump
#109SAFETY FEATURE FOR STUCK VALVE
#110Method for operating a hydraulic actuation power system experiencing pressure sensor faults
#111Control of a fluid circuit using an estimated sensor value
#112Multifunction relief valve and airplane emergency hydraulic power source unit having the same
#113Hydraulic apparatus
#114Safety device for hydraulic working machine
#115Overriding a primary control subsystem of a downhole tool
#116Pressure accumulator to establish sufficient power to handle and operate external equipment and use thereof
#117Detecting of faults in a valve system and a fault tolerant control
#118Architecture for a hydraulic system for operating aircraft landing gear
#119Architecture for a hydraulic system for operating aircraft landing gear
#120Hydraulic controller for working machine
#121Maintaining the position of an electro-hydraulic servo valve controlled device upon loss of position command
#122Actuator system having a valve manifold
#123HYDRAULIC CONTROLLER FOR WORKING MACHINE
#124Flow rate control device for power steering
#125Power steering apparatus
#126Two-stage pressure relief valve