Patents for F15B 13 - Details of servomotor systems (18,792)
06/1993
06/01/1993US5214997 Control circuit for a double-acting hydraulic jack and slide distributor for such a circuit
05/1993
05/25/1993US5212950 Hydraulic circuit with pilot pressure controlled bypass
05/18/1993US5211196 Proportional seat-type 4-way valve
05/13/1993WO1993009350A1 Pressure compensated flow amplifying poppet valve
05/13/1993DE4137868A1 multi way slide valve with air channels - has in area of only one housing end first and second spring plates on slide ledge with intermediary pressure spring
05/13/1993DE4136991A1 Hydraulic path control valve - comprises assembly with integrated flow regulating valve and check valve, flow regulating valve limiting pressure medium flow to hydromotor
05/12/1993EP0541336A1 Hydraulic control system
05/12/1993EP0541307A1 Valve
05/12/1993EP0540998A1 Multiport valve with connecting block
05/12/1993CN1020646C Overflow pump
05/11/1993US5209263 Pilot valve assembly
05/11/1993US5209261 Slide valve
05/05/1993CA2082039A1 Hydraulic control system
05/04/1993US5207059 Hydraulic control system having poppet and spool type valves
04/1993
04/29/1993WO1993008381A1 Linear fluid power actuator assembly
04/29/1993CA2122149A1 Linear fluid power actuator assembly
04/28/1993CN2130950Y 自动控制阀 Automatic control valves
04/21/1993CN2130217Y Liquid controlled single-single way throttle composite valve
04/20/1993US5203678 Valve apparatus and hydraulic drive system
04/15/1993WO1993007394A1 Brake valve
04/14/1993EP0536734A1 One or multi-stage fluid control unit and its operating method
04/14/1993EP0536398A1 Hydraulic system
04/13/1993US5201899 Control system for dental handpieces
04/13/1993US5201176 Hydraulic control circuit and hydraulic control apparatus therefor
04/06/1993CA1315645C Valve base with integral flow control valves and common exhaust passage
04/01/1993DE4131384A1 Simplified assembly for solenoid powered hydraulic valve - has valve cylinder held into bore on mounting frame and secured by crimping flange edge into groove around cylinder.
03/1993
03/30/1993US5197709 Electromagnetic directional control valve
03/30/1993US5197516 Hydraulic servo valve with controlled disengagement feature
03/28/1993CA2052418A1 Pressure responsive pilot control valve
03/25/1993DE4230183A1 Hydromotor controller for crane - has safety valve in vent line responding to excessive pressure loading
03/24/1993EP0532502A1 Negative load control and energy utilizing system.
03/24/1993CN2128676Y Servo control valve
03/18/1993WO1993005326A1 Fluid pressure machine
03/18/1993WO1993005303A1 Pressure compensated flow amplifying poppet valve
03/18/1993WO1993005301A1 Valve device
03/18/1993WO1993005296A1 Fluid pressure apparatus
03/17/1993EP0531304A1 Piston-cylinder control device
03/11/1993DE4230185A1 Directional control slide valve for hydraulic control system - has bridging channel, formed by open overlapping recesses in slide pistons, close to working channel.
03/10/1993CN2127963Y Single direction stroke speed adjusting valve
03/09/1993US5191826 For an oscillating load moving system
03/03/1993CN1069553A Multifunctional step-type electro-hydraulic follow-up servo valve
02/1993
02/25/1993DE4127578A1 EM valve esp. for vehicular air brake system - has portion of armature turned away from seating and exempt from air pressure in closed position
02/24/1993EP0528103A1 Electrohydraulic actuator
02/24/1993EP0351402B1 Load responsive control system adapted to use of negative load pressure in operation of system controls
02/24/1993CN2127441Y Prestressing tension hydraulic control valve
02/23/1993US5188147 Pressure compensating type hydraulic valve
02/17/1993EP0527393A1 Solenoid valve apparatus
02/16/1993US5186213 29
02/16/1993US5186000 Hydraulic drive system for construction machines
02/10/1993CN2126882Y Safety unloading valve
02/09/1993US5184648 Solenoid-operated valve for mounting in seriatim having automatic wireway device
02/09/1993US5184647 Valve battery for gaseous fluids
02/09/1993US5184646 Pilot valve
02/09/1993US5184644 Solenoid operated pressure regulating valve
02/04/1993WO1993002292A1 Hydraulic non-return valve block
02/02/1993US5183071 Counterbalance valve
01/1993
01/26/1993US5181692 Valve assembly for pressure fluids
01/21/1993DE4123718A1 Hydraulisches sperrventil Hydraulic-off valve
01/20/1993EP0523114A1 Electric connecting device for pilot valves in a valve array.
01/19/1993US5180318 Fluidic connector strip with base plate modules and a solenoid valve for each module
01/19/1993US5179888 Split clamp linear solenoid valve positioner
01/19/1993US5179887 Captive cylinder linear solenoid valve positioner
01/14/1993DE4122317A1 Hydraulic flow distribution valve - has free switching piston acting as pressure balance and throttle for metering fluid
01/13/1993EP0224478B1 Load sensing circuit of load responsive direction control valve
01/12/1993US5179330 Control circuit for an electrically controlled servo device
01/12/1993US5178358 Adjustable proportional throttle-valve with feedback
01/12/1993US5178191 Modular pneumatic control systems
01/12/1993US5178190 Microvalve
01/12/1993CA1312526C Fluid feeding device for a hydraulic, pneumatic or hydropneumatic facility
01/07/1993EP0337991B1 Load sensing circuit of load responsive direction control valve
01/07/1993EP0297106B1 Load sensing circuit and electrohydraulic control for load compensated directional control valve
01/07/1993DE4220656A1 Hydraulische schaltung Hydraulic circuit
01/07/1993DE4120972A1 Directional control valve for gear pump - which has by=pass channel in valve piston allowing valve stroke to be used independently
01/05/1993US5176358 Microstructure gas valve control
12/1992
12/29/1992US5174189 Fluid control apparatus
12/23/1992CN2125753U Slow pressure decreasing controller
12/17/1992DE4119297A1 Combined function control valve for constant displacement pump circuit - has pressure balancing spool for motor load control sliding inside low pressure relief spool for idle running
12/16/1992CN2125040U Double-action fast liquid release valve
12/15/1992US5170692 Hydraulic control system
12/10/1992WO1992021884A1 Hydraulic circuit board
12/10/1992DE4218894A1 Pilot controlled solenoid valve - has main plunger piston extension with control edges on flanges enclosed by sleeve
12/09/1992EP0516864A1 Hydraulic driving system and direction change-over valves
12/08/1992US5168622 Device for holding and/or automatic assembly of parts, having tool-carrying arms mounted on a support unit
11/1992
11/25/1992EP0514846A2 Improved fluid controller and logic control system for use therewith
11/25/1992CN2122960U Pressure-limit distributing valve for trailers
11/25/1992CN2122959U Stepless self-regulating speed booster deceleration valve
11/24/1992US5165448 Two-stage servovalve with compensatoin circuit to accommodate "dead zone" du
11/24/1992US5165320 Fluid-controlled servo-arrangement
11/19/1992EP0513528A2 Pressure maintaining valve
11/19/1992DE4115594A1 Proportional-druckregelventil Proportional pressure valve
11/17/1992US5163478 Spool valve having improved sealing characteristics
11/11/1992EP0512763A1 Pneumatic multiplexer
11/11/1992CN1019040B Multi-port self-regulating proportional pressure control valve
11/10/1992US5161575 Direction selector valve having load-sensing function
11/10/1992US5161373 Hydraulic control valve system
11/04/1992EP0511386A1 Device for changing over flow rate for attachment
11/03/1992US5159872 Valve units for use in hydraulic control systems of mining equipment
10/1992
10/28/1992CN1065709A Multi-function floating proportional pressure controlling valve
10/28/1992CN1065708A Low controlling-pressure sequence fluid one way valve
10/20/1992US5156189 High flow control valve