F15CFLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES transducers F15B5/00, F15B21/00; fluid dynamics in general F15D; computer comprising fluid elements G06D, G06G; electric control by means of electro-hydraulic or electro-pneumatic amplifiers G05B7/02In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. F15C1/00 F15C1/00Circuit elements having no moving partsGroup F15C1/22 takes precedence over groups F15C1/08 - F15C1/20.
This Note corresponds to IPC Note (1) relating to F15C1/08 - F15C1/20. F15C1/001for punched-card machines punched-card machines G06K; for typewriters typewriters B41J; for keyboards; for conveying cards or tape; for conveying through tubes transport through tubes B65G51/00, B65G53/00; for computers non-electric computers G06C, G06D, G06G; for dc-ac transducers for information processing dc-ac converters H02M; for signal transmission telegraphic apparatus H04L F15C1/002for controlling engines, turbines, compressors (starting, speed regulation, temperature control or the like) control of internal-combustion piston engines F02D; of turbines F01D, F02C; of fans F04D27/00; speedometers G01P F15C1/003for process regulation, (e.g. chemical processes, in boilers or the like); for machine tool control (e.g. sewing machines, automatic washing machines); for liquid level control; for controlling various mechanisms; for alarm circuits; for ac-dc transducers for control purposes automatic washing machines D06F33/00; electric regulation of mechanical working machines B23Q35/00, G05B19/00; valve-controlled servomotors F15B9/08; thread feeding devices for sewing machines D05B51/00; special provisions on lathes B23B25/00, B23Q; non-electric signal transmission G08C23/00 F15C1/005for measurement techniques, e.g. measuring from a distance; for detection devices, e.g. for presence detection; for sorting measured properties (testing); for gyrometers; for analysis; for chromatography fluid information or impulse transducers F15B5/00; postal sorting according to size B07C1/10; dial gauges, spherometers G01B3/22, G01B5/22; gyroscopic apparatus G01C19/00; viscosimeters G01N11/00; speed measurement, flowmeters G01P F15C1/006for aeronautics; for rockets (drives, controls); for satellites; for air cushion vehicles; for controlling vessels or torpedoes injectors F04F5/00; aircraft control by jet reaction B64C15/00; air pressure regulation in aircraft B64D13/04; instruments adapted to be mounted in aircraft B64D43/00 F15C1/007for indicating devices for fluid signals output arrangements in electronic computers G06F3/14; luminous advertising G09F13/00; name or number plates with interchangeable characters G09F7/00; fluid operating means for indicating or recording members in measuring instruments G01D5/42; fluid information or pulse transducers for converting variations of fluid pressure into other physical quantities F15B5/003 F15C1/008Other applications, e.g. for air conditioning, medical applications, other than in respirators, derricks for underwater separation of materials by coanda effect, weapons F15C1/02Details , e.g. special constructional devices for circuits with fluid elements, such as resistances, capacitive circuit elements; devices preventing reaction coupling in composite elements servomotor systems adapted for maintaining constant speed F15B11/05; Switch boards; Programme devices hydraulic programme control F15B21/02 F15C1/04Means for controlling fluid streams to fluid devices, e.g. by electric signals or other signals, no mixing taking place between the signal and the flow to be controlled fluid information or pulse transducers F15B5/00; electric regulation with electro-fluid amplifiers G05B7/02; fluid operating means for indicating or recording members in measuring instruments G01D5/42; distribution or supply devices for servomotors with electrically-controlled pilot valves F15B13/043 F15C1/06Constructional detailsSelection of specified materials Constructional realisation of one single element; Canal shapes; Jet nozzles; Assembling an element with other devices, only if the element forms the main part F15C5/00 takes precedence F15C1/08Boundary-layer devices, e.g. wall-attachment amplifiers coanda effect fluid oscillators of pulse generators F15B21/12 F15C1/10for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate , AND-gate; Comparators; Pulse generators F15C1/12Multiple arrangements thereof for performing operations of the same kind, e.g. majority gates, identity gates static stores G11C25/00; Counting circuits; Sliding registers F15C1/14Stream-interaction devicesMomentum-exchange devices, e.g. operating by exchange between two orthogonal fluid jets ; Proportional amplifiers F15C1/143for digital operation, e.g. to form a logical flip-flop, OR-gate, NOR-gate, AND-gate F15C1/10 takes precedence F15C1/146multiple arrangements thereof, forming counting circuits, sliding registers, integration circuits or the like F15C1/12 take precedence F15C1/16Vortex devices, i.e. devices in which use is made of the pressure drop associated with vortex motion in a fluid vortex chambers F15D1/0015; vortex chambers as resistances F15C1/02; vortex chambers associated with amplifiers for improving the switching time by interaction F15C1/14 F15C1/18Turbulence devices, i.e. devices in which a controlling stream will cause a laminar flow to become turbulent ; Diffusion amplifiers F15C1/20Direct-impact devices i.e., devices in which two collinear opposing power streams are impacted F15C1/22Oscillators F15C3/00Circuit elements having moving parts valves, construction of valves F16KGroup F15C3/16 takes precedence over groups F15C3/02 - F15C3/14. F15C3/002using fluid droplets or similar deformable bodies using solid balls F15C3/06 F15C3/005using loose plates or foils using diaphragms F15C3/04 F15C3/007using a spiral spring which allows fluid bass upon deformation using reeds F15C3/08 F15C3/02using spool valves F15C3/04using diaphragms using loose plates or foils F15C3/005; connection of valves to inflatable elastic bodies B60C29/00 F15C3/06using balls or pill-shaped disks using fluid drops or similar deformable bodies F15C3/002 F15C3/08using reeds using spiral springs F15C3/007 F15C3/10using nozzles or jet pipes fluid information or pulse transducers F15B5/00 F15C3/12the nozzle or jet pipe being movable F15C3/14the jet the nozzle being intercepted by a flap F15C3/16Oscillators F15C4/00Circuit elements characterised by their special functions F15C5/00Manufacture of fluid circuit elementsManufacture of assemblages of such elements integrated circuits F15C7/00Hybrid elements, i.e. circuit elements having features according to groups F15C1/00 and F15C3/00