Appeal No. 2006-0190
Application No. 10/113,567
extending in a width direction of the tire are provided on
and into surfaces of the blocks,
wherein the sipes are formed by shifting pitches of a
zigzag shape on a tread face side of the sipe and a zigzag
shape on a bottom side thereof in the width direction of the
tire,
and in the case of viewing concave and convex points
according to a visual direction E along the circumferential
direction of the tire, connecting a convex flexion point of
the zigzag shape on the tread side and a concave flexion
point of the zigzag shape on the bottom side which are
facing each other, a concave flexion point of the zigzag
shape on the tread side and a convex flexion point of the
zigzag shape on the bottom side which are facing each other,
and the convex points of the both zigzag shapes which are
adjacent to each other, severally with edge lines, and
interlinking the edge lines serially by planes in the
width direction of the tire,
wherein one of wall surfaces sectioned by the sipe is
formed into a concavo-convex face A in which convex
triangular pyramids and convex reverse triangular pyramids
are alternately arranged in the width direction of the tire,
and the other wall surface is formed into a concavo-convex
face B in which concave triangular pyramids and concave
reverse triangular pyramids are alternately arranged in the
width direction of the tire,
wherein a plurality of the concavo-convex faces A
sectioned to be adjacent by the sipes are disposed in each
of the two outermost positions in the circumferential
direction of the block to be oriented outward from the
block, and
2
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Last modified: November 3, 2007