CPC Definition - Subclass F15D
This place covers:
Means and methods not provided for in other classes, for influencing the flow of fluids relative to constraining surfaces and after leaving these surfaces, e.g. producing or removing turbulence, deflecting jets, guiding flow through bends in conduits, affecting distribution of fluid in a conduit, reducing fluid friction.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Methods and means for influencing the flow of liquids, applicable to ships or other waterborne vessels | |
Influencing air flow over aircraft surfaces by affecting boundary layer flow | |
Influencing air flow over aircraft surfaces not otherwise provided for | |
Fluid-circuit elements |
This place covers:
Means and methods not provided for in other classes, for influencing the flow of fluids, i.e. the flow of liquids or gases relative to constraining surfaces and after leaving these surfaces, e.g. producing or removing turbulence, deflecting jets, guiding flow through bends in conduits, affecting distribution of fluid in a conduit, reducing fluid friction.
This place covers:
Flow directing or obstructing plates, vanes or panels used to direct or modify a flow of fluid.
Illustrative examples of subject matter classified in this place:
1.
2.
3.
This place covers:
Means for equalising the velocity distribution across the cross section of a fluid conduit.
Illustrative example of subject matter classified in this place:
This place covers:
A fluid flow influencing device situated between an inlet and an outlet, the device causing the fluid to form a swirl or vortex, without the need for moving parts to create the swirl or vortex.
Illustrative examples of subject matter classified in this place:
1.
2.
3.
In patent documents, the following words/expressions are often used as synonyms:
- whirl
- swirl
- vortex, vortices, vorticity
- eddy, eddies
Influencing boundary layer in pipes is classified in F15D 1/06, whereas details of the boundary influencing means may be further classified in F15D 1/002 when appropriate.
Influencing the boundary layer around bodies of solid material is classified in F15D 1/12, whereas details of the boundary influencing means may be further classified in F15D 1/002 when appropriate.
This place covers:
Guiding elements arranged within pipe elbows or duct bends; the construction of a pipe conduit element for elbows (e.g. tee, wye), which typically reduces the flow losses.
Illustrative examples of subject matter classified in this place:
1.
2.
3.
Complete classification will include F15D 1/002 for further details of the boundary layer influencing means and F15D 1/0085 when appropriate for the method of making the surface for influencing the boundary layer.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Rudders |
This place covers:
Illustrative examples of subject matter classified in this place.
1.
2.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Golf balls having dimples | |
Influencing air-flow over aircraft surfaces by affecting boundary-layer flow using, e.g. riblets |
Complete classification will include F15D 1/002 for further details of the boundary layer influencing means and F15D 1/0085 when appropriate for the method of making the surface for influencing the boundary layer.