Patents
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)
10/1983
10/25/1983CA1155729A1 Hydrostatic control device, particularly a steering device
10/18/1983US4410049 Directional valve means for positioning machine units
10/12/1983EP0091018A1 Position control for a double acting hydraulic motor
10/05/1983EP0090129A2 Fluid flow control apparatus
09/1983
09/21/1983EP0088915A1 Hydraulic control device for actuating the lifting device of an agricultural vehicle
09/20/1983US4404897 Fluidic repeater
09/07/1983EP0088017A2 Hydraulic directional spool valve
08/1983
08/23/1983US4399734 Power assist device for control system
08/16/1983CA1152194A1 Controller system for rotary actuator
08/03/1983EP0084835A2 Power transmission
08/02/1983US4396033 Flow volume control device for a power assisted steering device
07/1983
07/27/1983EP0084501A1 Distributor for a hydraulic servomechanism
06/1983
06/15/1983EP0081374A1 Pulse width modulated control circuit for double solenoid valve
06/07/1983US4386553 Control system for doser actuator
06/01/1983EP0079907A1 Shearing tool.
05/1983
05/17/1983CA1146446A1 Negative rate compensated hydraulic servo system
04/1983
04/20/1983EP0076965A1 Control device for a pressure actuator
03/1983
03/30/1983EP0075507A1 Electrohydraulic servo valve device
03/23/1983EP0074922A2 Device for limiting the turning angle of screw gearings, and application of the same
03/23/1983EP0074581A1 Device for regulating a hub or an angular displacement independently of the load and proportionally to an input signal
03/09/1983EP0073268A1 Electro-hydraulic control of an actuator piston
03/08/1983US4375780 Fail-fixed electrohydraulic servosystem
02/1983
02/23/1983EP0072665A2 Pneumatic control system for machines
02/22/1983US4374485 Single annular membrane type of pneumatic positioner
02/15/1983US4373424 Hydraulic booster
02/15/1983CA1141262A1 Hydraulic servo steering system
02/09/1983EP0070973A1 Servo control valve, in particular for a hydraulic servocontrolled airplane
02/09/1983EP0070957A1 Method and device to simulate a definite time-dependent motion with a servo-hydraulic device
01/1983
01/25/1983US4369693 Electrohydraulic servomechanism
01/11/1983US4367803 Steering system
01/04/1983US4366743 Control system for doser actuator
01/04/1983US4366742 Hydraulic force multiplying device
12/1982
12/21/1982US4364302 Hydraulic control apparatus for a servo-motor, particularly for vehicle steering
12/09/1982WO1982004292A1 Semi-rotary fluid actuator
11/1982
11/25/1982EP0047241A4 Hydraulic servo steering system.
11/23/1982US4359929 Negative rate compensated hydraulic servo system
11/09/1982CA1135382A1 Electronic compensator for a pneumatic servo controlled load bearing bellows system
10/1982
10/26/1982US4355506 Pump-motor power limiter and pressure relief
10/19/1982CA1133793A1 Duel cylinder linear servo motor
10/12/1982CA1133355A1 Two stage pneumatic servo valve
10/06/1982EP0061759A1 Control system for hydraulic circuit means including a variable displacement pump and actuator means
10/05/1982US4352299 Intermittent motion gear apparatus
09/1982
09/28/1982US4351226 Fluid control system
09/22/1982EP0060704A2 A steering system
08/1982
08/31/1982CA1130664A1 Fluidic motor actuator
07/1982
07/07/1982EP0055351A1 Electrohydraulic position drive for turbine valves
06/1982
06/22/1982US4335645 Fluidic repeater
06/08/1982US4333390 Balanced pivoted vane valve
05/1982
05/05/1982EP0051014A1 Device for continuously controlling the stroke of a piston of an actuator
05/05/1982EP0051003A2 Control system for an electrohydraulic actuator
04/1982
04/27/1982US4326448 Electronic regulation procedures using a servomotor
04/21/1982EP0049714A1 Electro-magnetically controlled servomotor with follow-up action
03/1982
03/30/1982CA1120826A1 Control valve for working machine
03/18/1982WO1982000862A1 Actuator system for a control surface of an aircraft
03/17/1982EP0047241A1 Hydraulic servo steering system.
03/09/1982CA1119389A1 Separable slide fastener
01/1982
01/20/1982EP0044263A1 Quick response flow-current converter, especially to control actuation or distribution devices
12/1981
12/08/1981US4304171 Power boost mechanism
11/1981
11/18/1981EP0040075A1 Hydraulic actuator
11/11/1981EP0039550A2 A control arrangement for producing motion
09/1981
09/17/1981WO1981002553A1 Hydraulic servo steering system
09/01/1981US4286684 Hydraulic servo steering system
08/1981
08/25/1981US4285267 Control device for hydraulic servomechanisms
08/25/1981CA1107606A1 Pumps
08/18/1981US4283990 Fluidic repeater
08/12/1981EP0033669A1 Servocontrol and its use in flight control devices of aircraft
08/06/1981WO1981002185A1 Electrohydraulic set device
08/04/1981US4282467 Controller system for rotary actuator
07/1981
07/21/1981US4280083 Apparatus for limiting acceleration in a servosystem
07/21/1981US4279192 Electronic compensator for a pneumatic servo controlled load bearing bellows system
06/1981
06/16/1981CA1103115A1 Directional valve means for positioning machine units
05/1981
05/26/1981US4269111 Hydraulic apparatus
05/19/1981CA1101524A1 Combined feedback control system
05/05/1981US4265331 Fluidic repeater
05/05/1981US4265004 Separable slide fastener
04/1981
04/02/1981WO1981000893A1 Bidirectional,multiple speed hydraulic actuator
03/1981
03/10/1981US4254689 Fluidic repeater
03/05/1981WO1981000601A1 Electronic compensator for a pneumatic servo controlled load bearing bellows system
02/1981
02/10/1981US4249455 Hydraulic servo-mechanism
02/10/1981US4249453 Fluidic motor actuator
01/1981
01/20/1981US4245547 Rotary to linear servo mechanisms
01/06/1981US4242942 Hydraulic positioner with feedback device
12/1980
12/09/1980CA1091131A1 Control device for steering apparatus or the like
12/02/1980US4236442 Digitally compatible servomotor
11/1980
11/11/1980CA1089330A1 Rotary to linear servo mechanisms
11/04/1980US4231284 Load equilization feedback for parallel channel servo actuators
10/1980
10/14/1980US4227441 Hydraulic servo-motor for a regulating valve having a hydraulic closing mechanism
10/14/1980US4227440 Fluidic repeater
09/1980
09/09/1980CA1085493A1 Adaptive control system using position feedback
09/02/1980US4220073 Control valve for working machines
08/1980
08/12/1980US4216701 Swing type hydraulic servo-actuator
07/1980
07/15/1980US4212229 Controller for fluid pressure operated devices
06/1980
06/03/1980US4205590 Positive feedback mechanism for servocontroller of fluid operated actuator
06/03/1980CA1078943A1 Closed loop electro-fluidic control system
05/1980
05/14/1980EP0011036A2 Control device for hydraulic mechanisms
05/13/1980US4202247 Closed loop electro-fluidic control system
05/06/1980CA1076926A1 Pump jack device
02/1980
02/19/1980CA1071973A1 Device for turning a machine unit past a dead center
12/1979
12/11/1979US4177713 Electrohydraulic proportional actuator apparatus
11/1979
11/27/1979CA1066989A1 Control system for the main hydraulic cylinder of metal sawing machine
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