Patents for F15B 13 - Details of servomotor systems (18,792)
03/1987
03/11/1987CN86103431A Circular spraying servo valve for electro hydraulic device
03/10/1987US4648580 Direct-drive type electro-hydraulic servo valve
03/10/1987CA1218917A1 Priority valve for hydraulic installations
03/10/1987CA1218907A1 Pneumatic setting device
03/03/1987US4646785 Spool valve
03/03/1987US4646622 Hydraulic control apparatus
03/03/1987CA1218580A1 Open center hydraulic system
02/1987
02/26/1987DE3530408A1 Hydraulic safety control system for an actuating sequence of two hydraulic drive devices
02/25/1987EP0211497A1 Improved fluid power control system
02/25/1987EP0077770B1 Pulse width modulated constant current servo driver
02/24/1987US4645178 Redundant drive mechanisms for a direct drive valve and force motor assembly
02/24/1987US4644849 Locking apparatus of inertial mass drive hydraulic circuit system
02/19/1987DE3528781A1 Proportional choke valve
02/18/1987CN85203631U Wet electromagnetic change valve
02/17/1987US4643225 Pressure regulating valve
02/12/1987DE3527371A1 Pressure-actuated reversing valve
02/10/1987US4641812 Direct drive valve and force motor assembly including interchangeable stator assembly and alignment system or method
02/05/1987DE3526581A1 Shuttle valve
02/03/1987US4640311 Modular system of distribution
02/03/1987US4640309 Pilot operated poppet valve with speed control
02/03/1987CA1217406A1 Two member boost stage valve for a hydraulic control
01/1987
01/31/1987CN86103148A Source double stable hydraulic valve
01/29/1987WO1987000596A1 Control system for independent control of fluid actuated devices
01/29/1987WO1987000589A1 Hydraulic control unit
01/29/1987WO1987000588A1 Method and device for regulating a fluid flow to hydraulic or pneumatic drive means
01/29/1987DE3527026A1 Electrohydraulic actuating unit
01/28/1987CN85105425A Y-type plug-in electro-hydraulic ratio combination valve
01/27/1987US4638830 High sensitivity magnetic actuator
01/22/1987DE3524759A1 Directional control valve
01/21/1987EP0209019A2 Hydraulic control system
01/21/1987CN86103617A Power transmission
01/20/1987US4637482 Hydraulic system in working vehicles
01/20/1987US4637474 Tractor and towed implement with elevation control system for implement including pressure responsive valve actuator
01/20/1987US4637431 Supply control valve with integral pressure limiter
01/15/1987DE3622925A1 Combined switching and relief (pressure-limiting) valve
01/14/1987CN85105194A Route valve with hydraulic actuation
01/13/1987US4635682 Hydraulic valves with dual feedback control
01/10/1987CN85101815A Jam compensating control valve
01/06/1987US4633762 Speed limiting device designed to equip the slide valve of a hydraulic system
12/1986
12/30/1986EP0205753A1 Valve
12/30/1986EP0111007B1 Control valve linking device
12/17/1986EP0205381A1 Electrofluidic jet/flapper transducer, and servo valve equipped with such a transducer
12/10/1986EP0204096A1 The hydraulic step cylinder of orifice type used for driving of the control rod on reactor
12/09/1986US4627467 Pilot operated directional control valve
12/09/1986CA1214975A1 Control device
12/03/1986EP0113724B1 Fully compensated fluid control valve
12/03/1986CN85104146A Hand controled synchronous reversal valve
12/02/1986US4625751 Vehicle steering and auxiliary function hydraulic circuit
12/02/1986US4625513 Controlled flow hydraulic system
11/1986
11/26/1986EP0202385A1 Reel speed valve assembly
11/25/1986US4624445 Lockout valve
11/25/1986US4624284 Servovalve
11/25/1986CA1214377A1 Single coil vacuum/vent valve
11/20/1986EP0202011A2 Torque motors and valve assemblies
11/19/1986CN86200216U Band-sawing machine with a mechanism generating constant feeding force
11/19/1986CN85202016U Diaphragm-type electromagnetic change valve
11/18/1986US4623118 Proportional control valve
11/18/1986US4623003 Hydraulically actuated spool valve
11/11/1986US4621496 In a fluid control system
11/04/1986US4620416 Load sensing system
10/1986
10/22/1986EP0198635A2 Fluid valves
10/22/1986EP0198119A2 Hydraulic directional valve for pressure-compensated control
10/21/1986US4617968 Electrohydraulic control of a spool valve for energizing a heavy duty automatic transmission clutch
10/21/1986US4617967 Two-stage hydraulic valves
10/21/1986US4617798 Hydrostatic drive systems
10/15/1986EP0197467A2 Leak-free load control and holding valve
10/15/1986EP0197314A1 Hydraulic arrangement for selecting and transmitting a pressure signal in a directional stacking valve
10/14/1986US4616674 4/3-directional control valve
10/14/1986US4616671 Valve with flow force compensator
10/14/1986US4616476 Cylinder driving apparatus
10/08/1986EP0196358A2 Electrohydraulic control of a spool valve for energizing a heavy duty automatic transmission clutch
10/07/1986US4615358 Pilot valves for two-stage hydraulic devices
10/07/1986US4615174 Fluid circuit system for operating bidirectional hydraulic motor
09/1986
09/24/1986EP0195206A1 Pilot-operated valve
09/23/1986US4612846 High pressure hydraulic distributor having a mechanically controlled discharge valve
09/16/1986US4611632 Hydraulic solenoid valve structure
09/16/1986US4611528 Hydraulic control system
09/16/1986US4611527 Power transmission
09/12/1986WO1986005245A1 Load sensing circuit of load responsive direction control valve
09/09/1986US4610271 High pressure hydraulic distributor
09/09/1986US4610194 Load sensing circuit of load responsive direction control valve
09/03/1986EP0192899A1 Stalling control for a hydraulic system
09/03/1986EP0192734A1 Hydraulic or pneumatic auxiliary valve
09/03/1986CN85109196A Four-way poppet valve
09/03/1986CN85108167A Digital pulse-valve system
09/03/1986CN85104488A Totally-enclosed oil-circuit hydraulic integrated actuator
09/02/1986US4608913 Actuator with pneumatic energy accumulator more especially for cock valves
09/02/1986US4608911 Locking circuit for hydraulic systems
08/1986
08/28/1986WO1986004964A1 Valve arrangement for controlling a pressure medium flow through a line of pressure medium
08/28/1986WO1986004963A1 Proportional valve with variable pre-loading of the balance spring non-proportionally to the load pressure
08/20/1986CN85102790A Cone valve digital pressure valve
08/19/1986US4606258 Self-pressurizing hydraulic control system
08/12/1986US4605377 Manual lift means for marine propulsion device
08/12/1986US4605197 Proportional and latching pressure control device
08/12/1986US4605042 Pilot oil supply arrangement
08/12/1986US4605033 Pneumatic converter having variable gain relay stack
08/12/1986CA1209480A1 Remote control unit
08/12/1986CA1209418A1 Servo valve
07/1986
07/24/1986EP0131580A4 Signal valve for pressure compensated system.
07/23/1986EP0188044A1 Precise pressure regulator for a variable output pump