Recesses on a surface
AssigneeFobox AS
InventorsFred Olsen, Hans Oigarden
Life of this patent
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Abstract
Formations on the surface of bodies for reducing the drag relative to a medium which the body is located in or close to. The formations comprise a plurality of cavities (1,20,40,60). The surface in which the cavities are formed is closed. The cavity has a disruption edge (5,25,44,66) adjacent to the cavity, with the disruption edge located upstream of the cavity, so as to set the flowing medium most proximal to the surface into turbulence upon passing the disruption edge. The cavity has a maximum depth from the surface of at least approximately 2 mm.
Claims19
Formations on the surface of a body for reducing drag relative to a medium which the body is located in or close to, where the formations comprise a plurality of recesses disposed within said surface, wherein the surface is closed, that each recess of said plurality of recesses has a disruption edge adjacent to said recess, said edge extending generally transverse to the direction of the flow of said medium and being located upstream of said recess in a manner such that said medium most proximal to the surface is set into turbulence upon passing the disruption edge, and said recess has a maximum depth from the surface of at least approximately 2 mm.
Dependencies are inferred from the claim text.