Tires for motor vehicles
OwnerKouichi Nagahisainventor
Life of this patent
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Abstract
There is disclosed tires for motor vehicles each having a tread provided with a plurality of large convex portions and small convex portions, the convex portions and the small convex portions being differentiated in heights and areas thereof, the small convex portions being disposed around the large convex portion for forming a plurality of normal pyramidal structures. The normal pyramidal structures are formed by disposing the large concave portion around the small concave portion. There is formed a reversed pyramidal structure by disposing the large convex portions around the small convex portion.
Claims11
A tire for a motor vehicle, said tire having a ground-contacting tread having a tread pattern comprising a plurality of large-size convex portions, a plurality of middle-size convex portions, a plurality of small-size convex portions and a plurality of concave, suction portions surrounded by said large-size, said middle-size and said small-size convex portions, said convex portions having outermost ground-contacting tread surfaces, the heights of said large-size convex portions being greater than the heights of said middle-size convex portions and the heights of said middle-size convex portions being greater than the heights of said small-size convex portions, the areas of said large-size convex portions being greater than the areas of said middle-size convex portions at the outermost ground-contacting tread surfaces thereof, and the areas of said middle-size convex portions being greater than the areas of said small-size convex portions at the outermost ground-contacting tread surfaces thereof.
Dependencies are inferred from the claim text.