Version: 2023.08
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CPC | COOPERATIVE PATENT CLASSIFICATION | |||
| F15D | FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS ({nozzles, spray heads B05B; devices to decrease friction or resistance or to increase speed of ships B63B; ship rudders B63H 25/38; influencing the flow or the viscosity of fluids with chemical additives C09K 3/00, C10M; hydraulic engineering E02B}; fluid circuit elements F15C; {one-way check valves F16K 15/00}) [2018-08] NOTE
WARNING
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F15D 1/00 | Influencing flow of fluids [2013-01] |
F15D 1/0005 | . | {Baffle plates} [2013-01] |
F15D 1/001 | . | {Flow of fluid from conduits such as pipes, sleeves, tubes, with equal distribution of fluid flow over the evacuation surface} [2013-01] |
F15D 1/0015 | . | {Whirl chambers} [2013-01] |
F15D 1/002 | . |
F15D 1/0025 | . . | {using passive means, i.e. without external energy supply} [2013-01] |
F15D 1/003 | . . . | {comprising surface features, e.g. indentations or protrusions (F15D 1/0055, F15D 1/006 take precedence)} [2013-01] |
F15D 1/0035 | . . . . | {in the form of riblets} [2013-01] |
F15D 1/004 | . . . . . | {oriented essentially parallel to the direction of flow} [2013-01] |
F15D 1/0045 | . . . . . | {oriented essentially perpendicular to the direction of flow} [2013-01] |
F15D 1/005 | . . . . | {in the form of dimples} [2013-01] |
F15D 1/0055 | . . . | {comprising apertures in the surface, through which fluid is withdrawn from or injected into the flow} [2013-01] |
F15D 1/006 | . . . | {comprising moving surfaces, wherein the surface, or at least a portion thereof is moved or deformed by the fluid flow} [2013-01] |
F15D 1/0065 | . . | {using active means, e.g. supplying external energy or injecting fluid} [2013-01] |
F15D 1/007 | . . . | {comprising surfaces being moved by external supplied energy} [2013-01] |
F15D 1/0075 | . . . | {comprising electromagnetic or electrostatic means for influencing the state of the fluid, e.g. for ionising the fluid or for generating a plasma} [2013-01] |
F15D 1/008 | . . . | {comprising fluid injection or suction means} [2013-01] |
F15D 1/0085 | . . | {Methods of making characteristic surfaces for influencing the boundary layer} [2013-01] |
F15D 1/009 | . | {by means of vortex rings} [2019-02] |
F15D 1/0095 | . | {by means of injecting jet pulses of fluid wherein the injected fluid is taken from the fluid and re-injected again, e.g. synthetic jet actuators (F15D 1/008 takes precedence)} [2019-02] |
F15D 1/02 | . | in pipes or conduits [2013-01] |
F15D 1/025 | . . | {by means of orifice or throttle elements} [2019-02] |
F15D 1/04 | . . | Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements or elbows with respect to flow, specially for reducing losses in flow [2013-01] |
F15D 1/06 | . . | by influencing the boundary layer {(use of materials, e.g. to reduce surface friction C09K 3/00)} [2013-01] |
F15D 1/065 | . . . | {Whereby an element is dispersed in a pipe over the whole length or whereby several elements are regularly distributed in a pipe} [2013-01] |
F15D 1/08 | . |
F15D 1/10 | . | around bodies of solid material [2013-01] |
F15D 1/12 | . . | by influencing the boundary layer {(use of materials, e.g. to reduce surface friction C09K 3/00)} [2013-01] |
F15D 1/14 | . |