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:
Means for equalising the velocity distribution across the cross section of a fluid conduit.
Fig. from WO2008071683
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 example of subject matter classified in this group.
Fig. from DE3609541
Fig. from EP2103818
Attention is drawn to the following places, which may be of interest for search:
Golf balls having dimples | |
Influencing air-flow over aircraft surfaces by affecting boundary-layer flow using e.g. riblets |
In patent documents, the following words/expressions are often used as synonyms:
- "riblet", "rille" (DE), "rippe" (DE) and "rainure" (FR)
- " boundary layer", "Grenzschicht" (DE)