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 9 - Servomotors with follow-up action, i.e. in which the position of the actuated member conforms with that of the controlling member
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)
07/1988
07/13/1988EP0274046A1 Power servo system
07/12/1988US4756232 Vacuum servomotor for assistance with braking
07/05/1988US4754690 Electrically controlled hydraulically driven actuator assembly
06/1988
06/30/1988WO1988004734A1 Load sensing circuit and electrohydraulic control for load compensated directional control valve
06/29/1988EP0272598A2 Electrohydraulic servo system
06/22/1988EP0272176A1 Hydraulic rotary vane actuator, especially for aircraft rudder control
06/15/1988CN87107341A Power transmission
06/07/1988US4749936 Power transmission
05/1988
05/31/1988US4747335 Load sensing circuit of load compensated direction control valve
05/19/1988WO1988003652A1 Linear position sensor
05/17/1988US4744218 Power transmission
05/11/1988EP0266606A2 Position determining apparatus
05/03/1988US4741247 For operating from a source of gas under pressure
05/03/1988US4741159 Power transmission
05/03/1988CA1236149A1 Vacuum servomotor for assistance with braking
04/1988
04/12/1988US4737705 Linear position sensor using a coaxial resonant cavity
04/07/1988DE3729564A1 Hydraulic follow-up control valve
03/1988
03/29/1988US4733601 Combined servo control and jack unit
03/29/1988US4733585 Feeding device for a tool slide of a machine tool
03/23/1988EP0260985A2 Electrically controlled hydraulically driven actuator assembly
03/23/1988EP0260935A2 Pneumatic actuator apparatus
03/10/1988WO1988001697A1 Hydraulic idling-regulating valve
03/02/1988EP0257261A1 Power transmission
03/01/1988US4727791 Apparatus for controlling a hydraulic single acting cylinder
02/1988
02/17/1988EP0132199B1 Hydraulic distributor for the control of an aircraft
02/16/1988CA1232826A1 Balanced output hydraulic actuator system
02/09/1988US4724372 Speed control apparatus of hydraulic actuator
01/1988
01/26/1988US4721027 Double acting linear actuator
01/07/1988EP0251535A2 Parallel redundant actuator systems
12/1987
12/22/1987US4714006 Fluid actuator with feedback mechanism
12/22/1987US4714005 In an electrohydraulic servo system
12/17/1987WO1987007686A1 Method and device for the position servo-control of a pneumatic cylinder
12/16/1987EP0249559A1 Method and device for the position control of a pneumatic actuator
12/15/1987US4712470 Method and apparatus for compensating the variable weight of a mass acting on a hydraulic drive, in particular for the upright drive cylinder of a lapping machine
12/02/1987EP0247335A2 Electrohydrolic system with distributed control
11/1987
11/17/1987US4706456 Method and apparatus for controlling hydraulic systems
10/1987
10/21/1987CN86102585A Intelligent hydraulic motor
10/20/1987US4700748 Pressure-referenced programmed flow control in a hydraulic valve
10/20/1987US4700610 Cylinder tube strain measurement feedback for piston position control
10/14/1987EP0241161A1 Valve control system and method
10/14/1987EP0240965A1 Electrohydraulic system with distributed control
10/13/1987US4699571 Control valve for a variable displacement pump
09/1987
09/24/1987WO1987005669A1 Servovalve drive electronics improvements
09/15/1987CA1226785A1 Hydraulic percussion mechanism
09/09/1987EP0235468A1 Servomechanism
08/1987
08/13/1987WO1987004762A1 Hydraulic actuator circuit with chamber bypass controlled by negative load pressure directing valve
08/12/1987EP0232014A2 Energy-conserving servomechanisms
07/1987
07/21/1987CA1224381A1 Hydrostatic control device, particularly steering device
07/21/1987CA1224380A1 Servo booster mechanism
07/14/1987US4679591 Servovalve drive electronics improvements
07/07/1987CA1223792A1 Hydrostatic control device, particularly steering device
06/1987
06/10/1987EP0225276A1 Fluidic-force amplifier
06/09/1987US4671166 Electro-hydraulic actuator systems
06/02/1987CA1222433A1 Hydraulic percussion mechanism
05/1987
05/20/1987CN85108266A Servo system
04/1987
04/22/1987CN86105270A 动力传送 Power transmission
04/15/1987EP0218050A2 Fluid servo system
03/1987
03/17/1987US4651272 Power transmission
03/17/1987US4649803 Servo system method and apparatus, servo valve apparatus therefor and method of making same
03/04/1987EP0212628A2 Positioning control device for a fluid powered cylinder
03/03/1987US4646621 Hydraulic servo actuator
02/1987
02/17/1987US4643074 Power transmission
02/10/1987US4641405 Servo system method and apparatus servo valve apparatus therefor and method of making same
01/1987
01/20/1987US4637474 Tractor and towed implement with elevation control system for implement including pressure responsive valve actuator
01/07/1987CN86103672A Power transmission
01/06/1987US4633759 Hydraulic pivot drive
12/1986
12/30/1986US4632016 Apparatus for controlling an adjustable arm
12/23/1986US4631010 Hydrostatic control device, particulary steering device
12/23/1986CA1215608A1 Hydraulic control apparatus for a servo-motor, particularly for a vehicle steering
12/10/1986EP0204277A1 Power transmission
12/02/1986US4625622 Power transmission
11/1986
11/19/1986CN85203741U Synchronous rotating hydraulic amplifier
11/18/1986US4622883 Apparatus for positioning a movable member
11/12/1986EP0200785A1 Method and apparatus for adjusting propeller blades of a hydraulically controlled variable pitch propeller
11/06/1986WO1986006445A1 Device for adjusting the circuit amplification of a servo-regulating circuit
10/1986
10/29/1986CN85103931A Power transmission
10/01/1986CN85100434A Power self-adapting non-pulse variable shifting reciprocal hydraulic press system
09/1986
09/16/1986US4612003 Hydraulic servomechanism
09/10/1986EP0193947A2 Power transmission
09/10/1986EP0193908A1 Valve device for positioning a piston-cylinder-device
09/09/1986CA1211011A1 Rotation speed control apparatus for internal combustion engines
09/03/1986CN85108167A Digital pulse-valve system
08/1986
08/27/1986CN85100383A Remote control hydraulic system of internal combustion engine moving equipment
08/26/1986CA1210306A1 Servo actuator control/damping mechanism and method
08/20/1986CN85109073A 动力传送 Power transmission
08/20/1986CN85101613A Machinery location feedback hydraulic low-speed servo mechanics
07/1986
07/22/1986US4601169 Check device for a redundant flight control apparatus
07/02/1986EP0186580A1 Fluid pressure servo motor
07/02/1986EP0186092A1 Power transmission
06/1986
06/24/1986US4596271 Fluid pressure device
06/24/1986US4596177 Actuator system
06/24/1986CA1206385A1 Positioner having user-adjustable dynamic response
06/17/1986US4595979 Positioning apparatus using a hydraulic actuator
06/11/1986CN85200394U Two-pole electrical liguid feed back servo valve
05/1986
05/22/1986WO1986002901A1 Method and apparatus for adjusting propeller blades of a hydraulically controlled variable pitch propeller
05/13/1986US4587883 High resolution control system for a pressure-responsive positioning device
05/13/1986US4587808 Control system for hydraulic circuit means
05/06/1986CA1204193A1 Power transmission
04/1986
04/24/1986WO1986002414A1 System for monitoring the position of a machine component
04/23/1986EP0178819A2 Electro-hydraulic actuator systems
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