Mizuno Corporation

Akihiro Miyauchi

Takaya Kimura

Seiichi Goto

Isao Nakano

Kenjiro Kita

Koji Ito

Natsuki Sato

Takao Oda

Takeshi Takeshita

Yoshihiro Yabushita

A method of manufacturing a sole according to the present invention includes the steps of obtaining a rubber part by previously crosslinking a polymer mixture containing 50 to 100 mass % of a diene-based polymer and 0 to 40 mass % of an acrylonitrile component in a polymer component of the polymer mixture, halogenating the rubber part, and bonding the rubber part and thermoplastic resin to each other by molding said thermoplastic resin on said rubber part.

Sole and method of manufacturing sole

A sole structure is provided that can improve cushioning and bending properties of the sole heel portion. The sole assemblyis formed of an upper platedisposed on the upper side of the heel portion H, a wavy lower plateprovided below the upper platein the heel portion H and having at least two convex portionsthat protrude downwardly and that are adapted to form voids C relative to the upper plateand a plurality of cleats that are provided on the lower surfaces of the convex portions of the lower plate and/or a cleat that is provided between adjacent convex portions of the lower plate.

Sole structure for a shoe

A sole structure is provided that can improve bendability and cushioning ability of the sole forefoot portion. The sole assemblyis formed of an upper plate, and a lower plateprovided below the upper plateand spaced apart from the upper platevia a void S. The lower platehas a plurality of protrusionsthat protrude toward the upper plate. The longitudinal path length Lof the lower plateis longer than the longitudinal path length Lof the upper plate. More specifically, the path length Lof the lower plateis 40-60% longer than the path length Lof the upper plate

A midsole structure for an athletic shoe includes an upper midsole () formed of a soft elastic material, a lower midsole () disposed under the upper midsole () and formed of a soft elastic material, and a wavy plate assembly () interposed between the upper midsole () and the lower midsole (). The wavy plate assembly () includes a wavy board () and a pair of sidewall members () provided discretely from the wavy board () and disposed on opposite Bides of the wavy board (). Each of the sidewall members () includes a wavy bottom portion () overlapping the wavy board () and an upraised portion () extending upwardly from the wavy bottom portion () to face a side surface of the upper midsole (). Provision of the wavy board () and the sidewall members () discretely from each other simplifies a layout of a mold for forming the wavy plate assembly (), thereby reducing a manufacturing cost.

Midsole structure for an athletic shoe

A sole structure for an athletic shoe includes a heel region and a forefoot region, a midsole of a soft elastic material including a midsole heel portion at the heel region, and an outsole of a harder material including an outsole heel portion at the heel region and an outsole forefoot portion that extends from the outsole heel portion to the forefoot region. The midsole heel portion has wavy corrugations on a lower surface thereof and a smooth plane on an upper surface thereof. The outsole heel portion includes a corrugated wavy plate with corrugations through its thickness, which are in phase with the wavy corrugations on the lower surface of the midsole heel portion.

Sole design and structure for athletic shoe

An athletic shoe sole structure includes a midsole body that extends from a heel region to a forefoot region of a shoe, and an outsole body that is disposed under the midsole body, extends from the heel region to the forefoot region of the shoe, and is formed of a harder material than the midsole body. A heel portion of the outsole body includes a corrugation. The sole structure further includes a lower midsole disposed under the heel portion of the outsole body, an outsole heel portion attached at a lower surface of the lower midsole, and cleats provided at a lower surface of the outsole body. The sole structure having only two layers with the outsole and the midsole decreases the weight of the shoe, simplifies a manufacturing process, and reduces a manufacturing cost.

A shoe sole structure includes an outsole that extends from a heel region to a forefoot region of a shoe, and a midsole that is disposed above the outsole and extends from the heel region to a midfoot region of the shoe. A heel portion of the outsole includes a corrugated portion. A heel portion of the midsole includes a corrugated portion, which corresponds in phase to the corrugated portion of the outsole. Cleats are provided at a bottom surface of the outsole. The corrugated portion on the outsole provides running stability. The sole structure having only two layers with the outsole and the midsole decreases the weight of the shoe, simplifies a manufacturing process, and reduces a manufacturing cost.

Growing community of inventors

Kawanishi, Japan

Akihiro Miyauchi