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)
10/1989
10/19/1989DE3810986A1 Brake valve for delaying the lowering movement and positioning of the working piston of a cylinder/piston arrangement
10/18/1989EP0337848A1 Pneumatic double valve, more particularly for compressedair horn
10/18/1989EP0337129A1 Pressure reducing valve
10/18/1989CN2046160U Electronic fore-guiding gas check
10/18/1989CN2046159U Multistage overflow valve
10/12/1989EP0352263A4 Fail-fixed servovalve with controlled hard-over leakage.
10/05/1989WO1989009360A1 Hydraulic pilot valve
10/04/1989CN2045438U Two-location three-way start valve
10/04/1989CN2045437U Composite type direction valve
10/04/1989CN2045436U Integrated type operation valve set
10/04/1989CN2045435U Differential type hydraulic automation unload valve
10/03/1989US4870892 Control means for a hydraulic servomotor
09/1989
09/28/1989DE3808758A1 Electrohydraulic control device
09/27/1989EP0157847B1 Slide valve
09/26/1989CA1261233A1 Lockout valve
09/26/1989CA1260803A1 Power transmission
09/19/1989US4866936 Two-stage flow divider with pressure-relief valves in each stage to regulate flow in hydraulic system for working vehicles
09/19/1989EP0267188A4 Hydraulic control unit.
09/13/1989EP0332132A2 Electrohydraulic servo system, especially for injection molding machines
09/13/1989EP0331958A2 Hydraulic control device
09/12/1989US4865079 High pressure hydraulic flow control valve
09/08/1989WO1989008213A1 Valve device
09/08/1989WO1989008199A1 Pilot operated valve device with assist function
09/08/1989WO1989008198A1 Pilot-operated valve device
09/08/1989WO1989008197A1 Operation valve device
09/06/1989EP0331177A1 Apparatus for controlling operating reaction of winch
09/06/1989EP0331076A1 Hydraulic circuit for cylinder
09/05/1989US4864210 Servo valve
09/05/1989US4862920 Spool for a spool valve and method of producing same
09/05/1989US4862788 Valve positioning device
08/1989
08/31/1989DE3805287A1 Valve arrangement for at least one hydraulic consumer fed by a pump with variable delivery volume
08/30/1989EP0330575A1 Hydraulic circuit comprising a safety valve for a hydraulic actuator
08/30/1989EP0330430A2 High pressure hydraulic flow control valve
08/30/1989CN1035167A Fluidic multiplexer
08/29/1989US4860792 Electromagnetic control valve
08/29/1989US4860788 Metering valve
08/24/1989DE3804784A1 Multi-stage valve control
08/23/1989EP0329477A1 Fluidic multiplexer
08/22/1989US4858651 Control valve for construction equipment
08/22/1989US4858650 Electrohydraulic servovalve for the control of a hydraulic actuator, in particular in servomechanisms controlling the flight of aircraft
08/22/1989US4858649 Valve apparatus
08/22/1989US4858515 Priority valve for hydraulic installations
08/16/1989CN2042903U Antipollution high-flow electro-hydraulic servo valve
08/16/1989CN1034793A Stepless frequency-adjusting and cone valve controlled hydraulic shocking device
08/15/1989US4856560 Valve base with integral flow control valves and common exhaust passage
08/15/1989US4856277 Two-stage flow divider with constant orifice first stage in hydraulic system for working vehicles
08/15/1989CA1258419A1 Control device for a hydraulically operated consumer
08/09/1989EP0230413B1 Control system for independent control of fluid actuated devices
08/09/1989CN2042526U Hydraulic operated valve
08/08/1989US4854222 Load compensated servo system to control flow rate as a function of command
08/08/1989US4854221 Pilot-controlled valve for braking or speed limitation in a hydraulic circuit
08/08/1989CA1258216A1 Pressure reducing valve assembly
07/1989
07/26/1989CN2041740U Multiplex change valve with cell-type
07/26/1989CN2041739U 液压数字减压阀 Digital hydraulic valve
07/25/1989US4850191 Control arrangement for at least two hydraulic consumers fed by at least one pump
07/19/1989CN2041374U Hydraulic lifting group valve
07/18/1989US4848405 Insert means for fluid flow system
07/18/1989US4848404 Hydraulic valve
07/11/1989CA1257175A1 Valve
07/05/1989EP0139719B1 Automatic supply and exhaust valve assembly
07/04/1989US4844125 Electrically-operable fluid control valve
07/04/1989US4843949 Fluid control valve with variable pressure gain
06/1989
06/29/1989DE3743338A1 Hydraulic distributing valve with position monitoring
06/28/1989EP0321475A1 Load responsive system having synchronizing systems between positive and negative load compensation.
06/28/1989CN1033536A Electrically controlled one-way valve
06/27/1989US4842021 Support for fluid power devices
06/27/1989US4842020 Double-solenoid single-stem four-way valve
06/27/1989US4842019 Pressure compensator device for proportional type hydraulic distributor and hydraulic distributor incorporating same
06/21/1989CN2039763U High pricision throttle-valve
06/20/1989US4840111 Energy-conserving regenerative-flow valves for hydraulic servomotors
06/15/1989WO1989005407A1 Hydraulic servo valve
06/14/1989EP0277135B1 Compressed air selector
06/13/1989US4838308 Multipurpose control valve
06/13/1989US4838306 Pneumatic locking valve with manual override
06/13/1989US4838145 Multiple actuator hydraulic system and rotary control valve therefor
06/08/1989DE3740001A1 Device for controlling the flow of a liquid
06/08/1989DE3739736A1 Control unit for a hydraulic working circuit
06/07/1989CN2038961U Hand-operated direction valve
06/07/1989CN2038960U Loading variable quantity shunting valve
06/06/1989US4836249 Rotary-action directional control valve
06/06/1989US4835966 Control switching arrangement for a hydraulic power lift
05/1989
05/31/1989CN2038567U Fan type hydraulic jet element
05/24/1989EP0316500A1 Control device for a piston located in a cylinder
05/24/1989DE3738241A1 Electrohydraulic device for the load-independent control of a volume flow in a manner proportional to an input signal
05/24/1989DE3348155C2 Control valve device
05/23/1989US4832082 Hydraulic pilot operated directional control valve
05/16/1989US4830054 Component assembly of several directional control valves adapted to be shifted electromagnetically independently of one another
05/16/1989US4830050 Fluid control valve
05/10/1989WO1989009343A1 Hydraulic driving unit
05/09/1989US4827982 Detent mechanism for pressure control valve
05/09/1989US4827981 Fail-fixed servovalve with controlled hard-over leakage
05/03/1989EP0314653A1 Pressure medium valve
05/03/1989DE3735537A1 Hydraulic valve
05/03/1989CN2037008U Reversal valve for control rotation of hydraulic oil circuit
05/02/1989US4825909 High pressure hydraulic flow control valve
05/02/1989US4825907 Low restriction fluid control valve
04/1989
04/25/1989US4823842 Single-stem four-way valve
04/25/1989US4823834 Diaphragm type of pilot operated directional control valve
04/25/1989US4823550 Rotary valve with jet pump aspirator
04/19/1989EP0312130A1 Hydraulic drive system
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