Patents for F15B 13 - Details of servomotor systems (18,792)
04/1990
04/12/1990DE3833874A1 Hydraulic directional control valve
04/12/1990DE3832780A1 Control motor for a servo valve
04/11/1990EP0362409A1 Hydraulic driving unit
04/11/1990EP0362401A1 Control valve unit
04/11/1990CN1007545B 摆线等距线齿轮传动副及其装置 Cycloid equidistance line gear and equipment deputy
04/11/1990CN1007544B Direction valve with flow controller
04/10/1990CA1267644A1 Pneumatic energy accumulated activator, especially for valve
04/04/1990EP0361643A1 Multi-stage selector valve
04/04/1990EP0360873A1 Pilot operated control valve unit
04/04/1990CN1007447B Hydraulic operated loop apparatus for operating reversal valve
04/03/1990US4913191 Directional control valve
04/03/1990US4913181 Priority valve and method for using same
04/03/1990US4913032 Multiplexed hydraulic control systems
03/1990
03/29/1990DE3832647A1 Shuttle valve for fitting in directional control valves of the disc type of construction
03/29/1990DE3832318A1 Electrohydraulic directional control valve
03/28/1990EP0360718A1 Pilot-operated regulating connector for regulating the speed of pneumatic actuators
03/28/1990EP0151174B1 Three-way proportional valve
03/22/1990WO1990002884A1 Direct drive valve
03/22/1990WO1990002883A1 Controlled connector-regulator for the speed regulation of pneumatic jacks
03/22/1990WO1990002882A1 Hydraulic driving system with a priority function for hydraulic motors
03/21/1990EP0359354A1 Fluid control valve with variable pressure gain
03/21/1990EP0358852A1 Device for transporting a fluid
03/21/1990EP0358778A1 Pilot operated control valve system
03/15/1990DE3829686A1 Pressure regulating valve
03/14/1990EP0357964A2 Proportional valve
03/14/1990CN2054503U Hydraulic control valve
03/14/1990CN2054502U 电磁气动阀 Pneumatic solenoid valve
03/14/1990CN2054433U Manpower hydraulic power device of hydraulic beam transport vehicle
03/13/1990US4907615 High frequency response servovalve with electrical position feedback element structure and method
03/08/1990WO1990002283A1 Poppet valve device
03/08/1990WO1990002267A1 Oil pressure feeder of work machine cylinder
03/08/1990WO1990002266A1 Operation valve device
03/07/1990CN2054106U Multiple-way change valve with single valve stem
03/07/1990CN2054105U Thin-wall high-strength three-purpose valve
03/06/1990US4905959 Pressure medium valve
02/1990
02/28/1990CN1007002B Distributor block for control system of support
02/28/1990CN1007001B Rotary fluid transfer device
02/27/1990US4903940 Device for positioning an adjusting member
02/27/1990CA1266218A1 Fluid power control system
02/21/1990EP0354972A1 Valve device
02/21/1990EP0277946A4 Compensated fluid flow control valve.
02/21/1990EP0276222A4 Compensated fluid flow control valve.
02/20/1990EP0276221A4 Compensated fluid flow control valve.
02/15/1990DE3907233A1 Valve block
02/14/1990CN2052838U Electromagnetic reversal valve for vehicle turning round in situ
02/14/1990CN2052837U Hydraulic valve
02/14/1990CN2052836U Proportion electromagnet type single stage servo/proportion flow valve
02/13/1990CA1265726A1 Compensated fluid flow control valve
02/13/1990CA1265725A1 Compensated fluid flow control valve
02/07/1990CN1006731B Hydraulic control apparatus
02/06/1990US4898360 Valve block assembly
02/06/1990US4898074 Servo-valve arrangement for power steering
02/06/1990EP0351402A4 Load responsive control system adapted to use of negative load pressure in operation of system controls.
01/1990
01/31/1990EP0352263A1 Fail-fixed servovalve with controlled hard-over leakage.
01/31/1990EP0352257A1 Control lever with load force feedback.
01/31/1990CN2052083U Voltage-limit reverse valve
01/31/1990CN1039288A Composite control valve of pressure and flow proportional to electric current
01/30/1990US4896700 Valve array
01/24/1990EP0351402A1 Load responsive control system adapted to use of negative load pressure in operation of system controls
01/24/1990CN2051687U Manual one-way load releasing valve
01/24/1990CN1038966A Power transmission
01/23/1990CA1264642A1 Piloted valve for braking or speed reducing in hydraulic systems
01/23/1990CA1264640A1 Rotary flow control apparatus
01/18/1990DE3824205A1 Electrohydraulic directional control valve
01/10/1990CN2050897U Three-way slave logical valve
01/10/1990CN2050896U Leader type air pressure controlling valve
01/08/1990EP0352257A4 Control lever with load force feedback.
01/08/1990EP0337991A4 Load sensing circuit of load responsive direction control valve.
01/08/1990EP0297106A4 Load sensing circuit and electrohydraulic control for load compensated directional control valve.
01/08/1990EP0224478A4 Load sensing circuit of load responsive direction control valve.
01/04/1990DE3821849A1 Control arrangement for a hydraulic servomotor
01/03/1990CN1038504A Pressure-sensing autocontrol valve for fluid
01/03/1990CN1038501A Directly pressure feed-back electric servo valve with self-flushing filter of bypassing main valve
01/02/1990US4890647 Hydraulic control valve
01/02/1990CA1264140A1 Metering slot configuration for a valve spool
12/1989
12/27/1989EP0348058A2 Fluid directing valve
12/26/1989US4889164 Solenoid controlled valve
12/26/1989US4889161 Compensated individual segment flow regulator
12/21/1989DE3820529A1 Control unit for adjacent control in hydraulic support control systems
12/12/1989US4886091 Anti-shock directional control fluid valve
12/06/1989CN2048911U Three-way servo reversing valve
12/06/1989CN2048910U 换向阀 Valve
11/1989
11/30/1989WO1989011597A1 Synthetisized flow-control servovalve
11/29/1989EP0274481B1 Two-axis force motor
11/28/1989US4883092 Multi-way control valve apparatus
11/28/1989US4883091 Multi-port self-regulating proportional pressure control valve
11/23/1989DE3915524A1 One-way valve
11/21/1989CA1263134A1 High sensitivity magnetic actuator
11/16/1989WO1989011041A1 Hydraulic drive unit for construction machinery
11/15/1989EP0341650A2 Hydraulic drive system for crawler-mounted construction vehicle
11/15/1989EP0341604A2 Piston valve
11/15/1989EP0341530A1 Control device for pneumatic systems, in particular pneumatic cylinders for machines and production machines or production assemblies
11/07/1989US4878418 Distributor for hydraulic cylinders
11/02/1989DE3813020A1 Arrangement for the feed control of a hydraulic actuator
11/01/1989CN1005643B Route valve with hydraulic actuation
10/1989
10/26/1989DE3812735A1 Component set for 2-way built-in valves
10/26/1989DE3812285A1 Control slide with lever actuation
10/25/1989EP0337991A1 Load sensing circuit of load responsive direction control valve
10/24/1989US4875501 Electromagnetic proportional control valve apparatus
10/24/1989US4875500 Diaphragm type of pilot operated directional control valve