US Patent 9434214 Pneumatic tire with tread having three dimensional sipes
Patent 9434214 was granted and assigned to Sumitomo Rubber Industries on September, 2016 by the United States Patent and Trademark Office.
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A pneumatic tire comprises a tread block having a top face provided with a three-dimensional sipe, the sipe extending along its longitudinal direction with an angle of 0 to 45 degrees with respect to a tire axial direction, the sipe having a first opening configuration extending in a wavy manner with amplitude W and a cycle a1 in a cross sectional view of the block parallel to the top face, the sipe having a second opening configuration extending in a wavy manner with amplitude W and a cycle a2 in a cross sectional view of the block perpendicular to the longitudinal direction of the sipe, and the sipe satisfying the following relation (1) in a rectangular coordinate system in which the x-axis corresponds to the longitudinal direction, the z-axis corresponds to a depth direction of the sipe:y=W·sin {(2π·x/a1)+(2π·z/a2)+θ}.
US Patent 09434214 Pneumatic tire with tread having three dimensional sipes US Patent 9434214 Pneumatic tire with tread having three dimensional sipes
US Patent 09434214 Pneumatic tire with tread having three dimensional sipes
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