Back to results
US 12,650,140 B2Granted
Drag reduction structure, resin molded product, shaping mold and moving object
AssigneeDai Nippon Printing Co., Ltd.
InventorsTsuyoshi Chiba, Fumihiro Arakawa
Life of this patent
Estimating the term…
Abstract
A drag reduction structure wherein a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface; a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less; a length of the first portion in a second direction is 30 mm or more; and a width of the first portion and a width of the second portion, in a first direction crossing the second direction, is 0.2 mm or more and 50 mm or less.
Claims26
A drag reduction structure comprising:
- a first portion including a plurality of convex portions and concave portions alternately arranged in a second direction, each of the convex portions and each of the concave portions having a line shape extending along a first direction intersecting with the second direction, wherein
- an angle between the first direction and the second direction is 85° or more and 95° or less, and
- an angle between a longitudinal direction of the line shape and the first direction is between −5° and 5°;
- and
- a second portion placed on a first surface and extending in the second direction, wherein:
- the first portion and the second portion are arranged in the first direction;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in the second direction is 30 mm or more;
- a width of the first portion in the first direction and a width of the second portion in the first direction are both 0.2 mm or more and 50 mm or less;
- and
- the width of the second portion in the first direction is equal to or greater than the width of the first portion in the first direction.
8 more elements
A resin molded product comprising a convexo-concave structure on its surface,
- wherein, the convexo-concave structure includes:
- a first portion including a plurality of convex portions and concave portions alternately arranged in a second direction, each of the convex portions and each of the concave portions having a line shape extending along a first direction intersecting with the second direction, wherein
- an angle between the first direction and the second direction is 85° or more and 95° or less, and
- an angle between a longitudinal direction of the line shape and the first direction is between −5° and 5°;
- and
- a second portion placed on a first surface and extending in the second direction, wherein:
- the first portion and the second portion are arranged in the first direction;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in the second direction is 30 mm or more;
- a width of the first portion in the first direction and a width of the second portion in the first direction are both 0.2 mm or more and 50 mm or less;
- and
- the width of the second portion in the first direction is equal to or greater than the width of the first portion in the first direction.
9 more elements
A shaping mold comprising a convexo-concave structure on its surface,
- wherein, the convexo-concave structure includes:
- a first portion including a plurality of convex portions and concave portions alternately arranged in a fourth direction, each of the convex portions and each of the concave portions having a line shape extending along a third direction intersecting with the fourth direction, wherein
- an angle between the third direction and the fourth direction is 85° or more and 95° or less, and
- an angle between a longitudinal direction of the line shape and the third direction is between −5° and 5°;
- and
- a second portion placed on a first surface and extending in the fourth direction, wherein:
- the first portion and the second portion are arranged in the third direction;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in the fourth direction is 30 mm or more;
- a width of the first portion in the third direction and a width of the second portion in the third direction are both 0.2 mm or more and 50 mm or less;
- and
- the width of the second portion in the third direction is equal to or greater than the width of the first portion in the third direction.
9 more elements
A moving object comprising a drag reduction structure on its surface,
- wherein, the drag reduction structure includes:
- a first portion including a plurality of convex portions and concave portions alternately arranged in a second direction, each of the convex portions and each of the concave portions having a line shape extending along a first direction intersecting with the second direction, wherein
- an angle between the first direction and the second direction is 85° or more and 95° or less, and
- an angle between a longitudinal direction of the line shape and the first direction is between −5° and 5°;
- and
- a second portion placed on a first surface and extending in the second direction, wherein:
- the first portion and the second portion are arranged in the first direction;
- a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 μm or more and 1000 μm or less;
- a length of the first portion in the traveling direction of the moving object is 30 mm or more;
- a width of the first portion in the first direction and a width of the second portion in the first direction are both 0.2 mm or more and 50 mm or less;
- and
- the width of the second portion in the first direction is equal to or greater than the width of the first portion in the first direction.
9 more elements
Dependencies are inferred from the claim text.