Patents
Sitemap › F15 - Fluid-pressure actuators; Hydraulics or pneumatics in general › F15B - Systems acting by means of fluids in general; Fluid-pressure actuators, e.g. servomotors; Details of fluid-pressure systems, not otherwise provided for › F15B 13 - Details of servomotor systems
Patents for F15B 13 - Details of servomotor systems (18,792)
10/1991
10/16/1991EP0451543A1 Actuation system for a steam regulating valve
10/16/1991CN2086818U Return orifice throttle valve
10/15/1991US5056561 Remote controlled, individually pressure compensated valve
10/15/1991US5056415 Pilot operated control valve system performing a support function
10/15/1991CA1290651C Multiple hydraulic control
10/09/1991EP0450078A1 High-speed flow rate control valve
10/03/1991WO1991015037A1 Electric connecting device for pilot valves in a valve array
10/01/1991US5052441 Direct drive servovalve having bearing-located motor housing
09/1991
09/25/1991EP0448028A1 Torque motor with symmetrical air gaps
09/25/1991EP0448027A1 Power transmission
09/24/1991US5051631 Electromagnetic solenoid valve with variable force motor
09/19/1991WO1991014121A1 Hydraulic control valve
09/18/1991CN2084998U Manually reset two position, three-way electromagnetic change valve
09/17/1991US5048569 Valve component group
09/17/1991US5048396 Bypass valve
09/17/1991US5048395 Control device for cylinder
09/10/1991US5046400 Control valve system
09/10/1991CA1288661C Valve for hydraulic cylinders and the like
09/05/1991WO1991013282A1 Pilot valve
09/03/1991US5044608 Operating force controlling device for operating lever
09/03/1991US5044400 Control valve assembly for pressurized oil
08/1991
08/31/1991CA2011211A1 Valve control system
08/29/1991DE4005966A1 Valve control for several users actuated in parallel - has arrangement of control edges to give symmetrical layout
08/27/1991US5042363 Device for remote control, with possibility for direct control, hydraulic directional valves
08/27/1991US5042314 Steering and transmission shifting control mechanism
08/22/1991WO1991012453A1 Hydraulic pilot valve
08/22/1991DE4004588A1 Releasable non-return valve - has slider in piston axial bore with pressure tap and control and calibration throttles increasing with slider stroke
08/21/1991EP0442033A1 Valve mounting structure
08/20/1991US5040569 Direct-operated servo valve, fluid pressure servo mechanism and control method for the direct-operated servo valve
08/20/1991US5040568 Direct drive servovalve having positive radial limit stop
08/20/1991US5040565 Pilot operated control valve system
08/19/1991CA2010337A1 Reaction-jet turbine
08/14/1991EP0440801A1 Hydraulic circuit
08/14/1991CN2082783U Lead controlling type high-accuracy shunt valve
08/14/1991CN2082782U Hydraulic oil return throttling speed gonverning loop equipped with pressure reducing valve interrelated to load
08/13/1991US5038825 Multiport valve
08/13/1991US5038671 Control valve
08/13/1991US5038670 Pneumatic control valve apparatus
08/08/1991WO1991011762A1 Servovalve apparatus for use in fluid systems
08/08/1991WO1991011623A1 Improved servovalve apparatus for use in fluid systems
08/08/1991DE4011908A1 Multi-way control valve - has double action servo cylinder at end of valve element
08/07/1991EP0440201A1 Servovalve apparatus for use in fluid systems
08/07/1991EP0440194A1 Improved servovalve apparatus for use in fluid systems
08/07/1991CN2082331U Combination valve
08/06/1991US5036886 Digital servo valve system
08/06/1991US5036877 Pilot controlled pressure relief valve
08/06/1991US5036750 Pilot-operated dual check valve assembly with cross-line flow valving pilot pistons
08/01/1991DE4002755A1 Automatic distributor valve controlling oil supply - has spool valve actuated by inlet pressure to apportion pump output between first and second user
08/01/1991DE3911426A1 Druckmittelventil Pressure valve means
08/01/1991CA2035078A1 Improved servovalve apparatus for use in fluid systems
08/01/1991CA2035074A1 Servovalve apparatus for use in fluid systems
07/1991
07/31/1991EP0439242A1 Linear actuator
07/31/1991EP0438925A2 Multiplexed hydraulic control systems
07/31/1991EP0438606A1 Valve device and hydraulic circuit device
07/31/1991EP0438604A1 Hydraulic circuit device
07/31/1991CN2081911U Electromagnetic three-position four-way chang valve
07/30/1991US5035264 Adjustable stator retainer assembly
07/30/1991US5035254 Power transmission
07/30/1991CA1286948C Hydraulic valve assembly
07/27/1991CA2034609A1 Electro-hydraulic actuator with mechanical memory
07/26/1991CA2008694A1 Valve control system
07/25/1991WO1991010833A1 Valve device and hydraulic driving device
07/25/1991WO1991010785A1 Device for changing over flow rate for attachment
07/24/1991EP0437995A2 Hydraulic elevator control valve
07/24/1991EP0437717A1 Seat valve
07/24/1991CN1013296B Valve base with integral flow control valve and common exhaust passage
07/18/1991DE4001197A1 Ball valve seating device - has pressure relief device for valve member closure spring
07/18/1991CA2008102A1 Modular logic element manifolds
07/17/1991EP0437111A2 Multiplexed hydraulic control systems
07/17/1991CN1053111A Combined overflowing and speed-changing valve by hydroelectric proportion
07/17/1991CN1053110A Combined decompressing and speed-regulating valve by hydroelectric proportion
07/16/1991US5031653 Differential cylinder pressure gain compensation for single stage servovalve
07/16/1991CA1286189C Low leakage orifice-controlled poppet valve
07/10/1991EP0436028A1 Hydraulic circuit for operating cylinder of working machine
07/09/1991CA1285835C Pneumatic stepping actuator positioner
07/03/1991EP0434748A1 Direct drive valve
07/02/1991US5027858 Electro-hydraulic
07/02/1991US5027856 Electrohydraulic signal converter
07/02/1991CA1285438C Device for positioning an actuating cylinder
06/1991
06/26/1991EP0433665A1 Hydraulic control valve
06/25/1991US5025834 Mounting plate storing conductor function
06/25/1991US5025625 Commonly housed directional and pressure compensation valves for load sensing control system
06/20/1991DE4026720A1 Hydraulic directional control valve for load sensing - incorporates extra chamber to allow left or right hand installation
06/20/1991DE3941802A1 Hydraulic directional control valve for load sensing - incorporated method of preventing leakages in neutral position
06/19/1991EP0432606A1 Proportional directional valve with position control
06/19/1991EP0432270A1 Pilot valve
06/18/1991US5024248 Two-position and three-way valve
06/18/1991US5024247 Control motor for a servo valve
06/12/1991EP0431459A1 Three way valve assembly with pressure compensating valve
06/12/1991EP0430939A1 Axial control valve
06/11/1991US5022434 Directional control valve
06/05/1991CN2078387U Linear flow-rate amplified static hydraulic steering gear
06/04/1991US5020570 Combined valve modular control panel
06/04/1991US5020417 Rotary servo actuator with internal valve
05/1991
05/29/1991EP0428847A1 Change-over valve
05/28/1991US5018935 Automatic pressure relief system for a hydraulic motor
05/28/1991US5018431 Apparatus for positioning a work implement
05/23/1991DE4036286A1 Three=way magnetic valve for hydraulic servo control - has flange engagement between outer and inner components of valve base with seatings for movable ball
05/22/1991EP0427981A1 Electrohydraulic or pneumatic actuator
05/22/1991EP0427865A1 Hydraulic driving device of construction equipment
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