Details of servomotor systems ; Valves for servomotor systems

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F15Hydraulics devices F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL FLUID-PRESSURE ACTUATORS

F15B13/00Details of servomotor systems ; Valves for servomotor systems

F15B13/01Locking-valves or other detent F15B13/015using an enclosed pilot flow valve F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors F15B13/021Valves for interconnecting the fluid chambers of an actuator F15B13/022Flow-dividers; Priority valves F15B13/023Excess flow valves F15B13/024Pressure reflief valves F15B13/025Pressure reducing valves F15B13/026Pressure compensating valves F15B13/027Check valves F15B13/028Shuttle valves F15B13/029Counterbalance valves F15B13/04for use with a single servomotor F15B13/0401Valve members; Fluid interconnections therefor F15B13/0402for linearly sliding valves F15B13/0403a secondary valve member sliding within the main spool F15B13/0405for seat valves F15B13/0406for rotary valves F15B13/0407Means for damping the valve member movement F15B13/0416with means or adapted for load sensing F15B13/0417Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves F15B13/0418Load sensing elements sliding within a hollow main valve spool F15B13/042operated by fluid pressure F15B13/0422with manually-operated pilot valves F15B13/0424the joysticks being provided with electrical switches or sensors F15B13/0426with fluid-operated pilot valves F15B13/043with electrically-controlled pilot valves F15B13/0431the electrical control resulting in an on-off function F15B13/0433the pilot valves being pressure control valves F15B13/0435the pilot valves being sliding valves F15B13/0436the pilot valves being of the steerable jet type F15B13/0438the pilot valves being of the nozzle-flapper type F15B13/044operated by electrically-controlled means F15B13/0442with proportional solenoid allowing stable intermediate positions F15B13/0444with rotary electric motor F15B13/0446with moving coil F15B13/06for use with two or more servomotors F15B13/07in distinct sequence F15B13/08Assemblies of units, each for the control of a single servomotor only F15B13/0803Modular units F15B13/0807Manifolds F15B13/081Laminated constructions F15B13/0814Monoblock manifolds F15B13/0817Multiblock manifolds F15B13/0821Attachment or sealing of modular units to each other F15B13/0825the modular elements being mounted on a common member F15B13/0828characterised by sealing means of the modular units F15B13/0832Modular valves F15B13/0835Cartridge type valves F15B13/0839Stacked plate type valves F15B13/0842Monoblock type valves F15B13/0846Electrical details F15B13/085Electrical controllers F15B13/0853Electric circuit boards F15B13/0857Electrical connecting means F15B13/086Sensing means F15B13/0864Signalling means F15B13/0867Data bus systems F15B13/0871Channels for fluid F15B13/0875Channels for electrical components F15B13/0878Assembly of modular units F15B13/0882using identical modular elements F15B13/0885using valves combined with other components F15B13/0889Valves combined with electrical components F15B13/0892Valves combined with fluid components F15B13/0896using different types or sizes of valves F15B13/10Special arrangements for operating the actuated device with or without using fluid pressure F15B13/12Special measures for increasing the sensitivity of the system F15B13/14Special measures for giving the operating person a "feeling" of the response of the actuated device F15B13/16Special measures for feedback