| Patents for F15B 9 - Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member (1,862) |
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| 10/05/1993 | US5251148 Integrated process control valve |
| 10/05/1993 | US5249504 Pneumatic booster |
| 09/30/1993 | WO1993019300A1 Hydraulic cylinder feedback control |
| 09/29/1993 | CN1076766A By-pass throttle type constant-speed loading, displacement and strain control device |
| 09/28/1993 | US5248921 Servo motor control device |
| 09/22/1993 | EP0561185A1 Hydraulic valve spool control for actuators with uneven piston velocities |
| 09/20/1993 | CA2092657A1 Hydraulic slide valve control for working cylinders with unequal piston speeds |
| 09/16/1993 | WO1993018445A1 Control system for glassware forming machine |
| 09/16/1993 | CA2123708A1 Control system for glassware forming machine |
| 08/25/1993 | EP0471695B1 Hydraulic drive |
| 08/14/1993 | WO1993016287A1 Electronic pilot positioner |
| 08/10/1993 | US5233904 Pneumatic brake booster with adjustable jump |
| 07/29/1993 | DE4201652A1 Control circuit for proportional valve electromagnet - controls proportional magnet directly using rectified mains voltage at approx. 250 volts |
| 07/21/1993 | CN1074515A Lumped directly-coupled electro-hydraulic servo |
| 06/01/1993 | USH1191 Electromagnetically actuated spool valve |
| 06/01/1993 | US5214995 Method for adjusting the jump value of a pneumatic brake-booster and booster for implementing this method |
| 05/27/1993 | WO1993010359A1 Air pressure operated apparatus and control apparatus for the same |
| 05/19/1993 | CN1020786C Linear gearing with hydaulic amplification |
| 03/31/1993 | EP0534690A2 Servo motor control device |
| 03/17/1993 | EP0531304A1 Piston-cylinder control device |
| 03/10/1993 | EP0303595B1 Linear position sensor |
| 03/09/1993 | US5192174 Hydraulic drive for a tool head |
| 02/16/1993 | CA1313699C Power transmission |
| 02/10/1993 | CN2126835Y Electromagnetic optical combined door pump |
| 02/03/1993 | EP0525547A1 Hydraulic control system for an actuator |
| 01/26/1993 | US5181380 Hydrostatic operating mode hydraulic actuator preferably for backup operation, and flight control system comprising it |
| 01/21/1993 | WO1993001470A1 Multiplexed radio frequency linear position sensor system |
| 01/12/1993 | US5178053 Electronic pilot positioner |
| 01/12/1993 | CA1312664C Control system for doser actuator having improved resolution |
| 01/07/1993 | EP0297106B1 Load sensing circuit and electrohydraulic control for load compensated directional control valve |
| 01/05/1993 | US5176518 Movement simulator |
| 12/23/1992 | WO1992022749A1 Method and arrangement for controlling a pressure fluid operated apparatus |
| 12/23/1992 | CN1067193A Oil pressure controlling method and oil pressing apparatus for rolling mill |
| 12/16/1992 | EP0518345A1 Hydraulic control system for aircraft |
| 12/08/1992 | CA1311175C Power transmission |
| 11/25/1992 | EP0514846A2 Improved fluid controller and logic control system for use therewith |
| 11/24/1992 | US5165320 Fluid-controlled servo-arrangement |
| 11/19/1992 | EP0514224A1 Pneumatic servo brake booster |
| 11/11/1992 | CN1019040B Multi-port self-regulating proportional pressure control valve |
| 11/10/1992 | US5161453 Actuation and flow control for a valve |
| 10/21/1992 | EP0509868A1 Pneumatic servomotor |
| 10/15/1992 | DE4111500A1 Power output limiting method for hydrostatic machine - calculating permissible flow vol. for secondary unit to provide limitation of pivot angle |
| 10/01/1992 | WO1992016397A1 Hydraulic aggregate for hydraulic control or regulating devices |
| 09/22/1992 | US5150060 Multiplexed radio frequency linear position sensor system |
| 09/17/1992 | DE4108028A1 Hydraulikaggregat fuer hydraulische steuer- oder regelvorrichtungen Hydraulic power unit for hydraulic tax or regulatory devices |
| 09/05/1992 | CA2062187A1 Linear drive |
| 07/02/1992 | DE4138521A1 Electrohydraulic control system allowing small incremental steps - uses control valves comprising main valves and control valves in series |
| 06/23/1992 | US5123331 Stability compensating circuit of actuator system |
| 06/09/1992 | US5121042 Electro-hydraulic servo mechanism |
| 06/09/1992 | US5119717 Method of controlling solenoid valves for a hydraulic actuator, with a time delay between closing a normally open valve and opening a normally closed valve |
| 05/26/1992 | US5115640 Fluid controller and logic control system for use therewith |
| 04/23/1992 | DE4032811A1 Rotary piston valve servo selector - has piston with radial recess which varies line connections as its position changes |
| 04/21/1992 | US5105722 Mechanically controlled power booster |
| 04/08/1992 | EP0479399A2 Pneumatic rotary actuator for accurate positioning of a power output member |
| 04/08/1992 | EP0338036B1 Linear actuator with hydraulic amplification |
| 03/25/1992 | EP0477079A1 Hydraulic actuator with a hydrostatic functioning mode, for use in emergencies and flight control system provided with such a device |
| 03/18/1992 | EP0475794A1 Process for regulating the jump value of a pneumatic brake booster, and brake booster for carrying out that process |
| 03/17/1992 | USRE33846 Electrohydraulic valve system |
| 02/26/1992 | EP0471695A1 Hydraulic drive. |
| 02/19/1992 | EP0471311A2 Rotary servo actuator with internal valve |
| 02/18/1992 | US5088383 Multiplexed hydraulic control system with multiplexing valve having planar port array |
| 02/05/1992 | EP0469641A2 Method of controlling a fluid-powered actuator |
| 01/02/1992 | DE4101883C1 Hydraulic adjuster for mine - has control spindle moving axially in piston to trigger control valve |
| 12/27/1991 | EP0462432A2 Integrated process control valve |
| 12/12/1991 | WO1991019108A1 Piston-cylinder control device |
| 11/28/1991 | WO1991018204A1 Hydraulic drive device |
| 11/14/1991 | DE4015101A1 Hydraulische antriebsvorrichtung Hydraulic drive device |
| 11/12/1991 | US5063740 Electrohydraulic servodevice for position control |
| 10/24/1991 | DE4012890A1 Control arrangement for piston of position motor - involves formation of control edges on control slide |
| 10/15/1991 | US5056414 Linear drive with hydraulic amplification |
| 10/08/1991 | US5054369 Multiplexed hydraulic control system with plural selector valves |
| 09/19/1991 | WO1991014103A1 Pneumatic or hydraulic piston-cylinder unit with servo control |
| 09/18/1991 | EP0446786A1 Movement-simulator |
| 09/17/1991 | US5048394 Multiplexed hydraulic control system with oscillator for multiplexer drive |
| 09/12/1991 | DE4007648A1 Pneumatische oder hydraulische kolben-zylinder-einheit mit servosteuerung Pneumatic or hydraulic piston-cylinder unit with servo-control |
| 08/13/1991 | US5039176 Apparatus for avoiding wheel locking in a vehicle |
| 08/06/1991 | US5036886 Digital servo valve system |
| 07/31/1991 | EP0438925A2 Multiplexed hydraulic control systems |
| 07/17/1991 | CN2081009U Closed loop hydraulic servo-device |
| 07/10/1991 | CN1013141B Means for adjusting angle of pitch of blade or blades of wind-powered generator |
| 07/09/1991 | CA1285851C Electrically controlled hydraulically driven actuator assembly |
| 06/18/1991 | US5025199 Servo control apparatus |
| 06/11/1991 | US5023535 High resolution pulse width modulation |
| 06/04/1991 | US5020417 Rotary servo actuator with internal valve |
| 05/21/1991 | US5016519 Linear drive |
| 05/07/1991 | US5012722 Floating coil servo valve |
| 05/02/1991 | WO1991005957A1 Driving cylinder |
| 04/18/1991 | DE3934286A1 Antriebszylinder Drive cylinder |
| 04/17/1991 | EP0423037A1 Servo control device |
| 04/16/1991 | US5007327 Servo actuator |
| 04/16/1991 | CA1283191C Method and apparatus for controlling hydraulic systems |
| 03/20/1991 | EP0417657A1 Method of controlling hydraulic actuator |
| 03/20/1991 | EP0417443A1 Apparatus for preventing the blocking of the wheels of a vehicle |
| 03/19/1991 | CA1281792C Linear position sensor |
| 02/27/1991 | EP0414279A2 Tractor hitch control system |
| 01/30/1991 | EP0410812A2 Multiplexed hydraulic control system |
| 01/30/1991 | EP0410811A2 Hydraulic control system |
| 01/29/1991 | US4987823 Location of piston position using radio frequency waves |
| 01/16/1991 | EP0407908A2 Position measuring device |
| 01/15/1991 | US4984505 Multiplexed hydraulic control systems |