Asics Corporation

Akira Kataoka

Masanobu Inohara

Kiyohiro Saito

Toshio Suma

Ryuichi Tsukita

Manabu Kuramoto

Katsuhisa Ohno

Morio Nakagawa

Ryuichi Tukita

Rvuichi Tsukita

Hitoshi Mimura

A hard plate of spike shoes for track races comprises a plurality of small projections or small holes on an anterior forefoot portion in at least half the forefoot portion, and a plurality of large projections greater than said small projections or small holes on a posterior forefoot portion.

Hard plate for spiked track shoes

A shoe part for running shoes for field and track events wherein each shoe has a sole, a hard plate for a forefoot portion of the shoe sole, including a plurality of columnar projections and a plurality of shorter projecting portions terminating short of the columnar projections on a surface side of the hard plate. The hard plate includes an elastic region projecting from adjacent surrounding surfaces of the hard plate and lying in a central region of the surface side of the hard plate at which maximum compressive load is applied during running.

Hard plate of each of spike shoes for field and track events

A spike is mountable onto the sole of a spiked track shoe which allows a runner to develop maximum propulsion against the field surface. The spike is removably attachable to the track shoe and includes an elongate support plate having at one end thereof a connection hole for connection with the shoe, and a spike portion disposed at the other end. The spike portion is disposed at an obtuse angle (i.e., greater than a right angle relative to the support plate). The spike is made of metal or of synthetic resin, and the spike portion may include one or more than one spike parts. The angle between the spike portion and the support plate is preferably between 95 and 130 degrees, and more preferably between 105 and 120 degrees. The spike portion is preferably convergent towards the tip thereof, for example in the shape of a cone. The spike portion may, however, also be suitably formed into a cylindrical shape, or in a stepped cylindrical shape.

Spike for track race shoes

Fore shoe sole

Spike

Growing community of inventors

Kobe, Japan

Akira Kataoka