FIELD: individual supplies.
SUBSTANCE: sport footwear sole, particularly footwear sole for racing skis or telemark style skiing consists of a back or heel part where heel is placed, and a front part or toe part. The latter is cup-shaped and made from solely hard material, mainly plastic. Underneath, the sole is provided with a cover piece located on the front and back part. The cover piece is made from relatively soft, rubber-like material. There are several cross grooves made in the sole bottom at least within zone (M) located in metatarsophalangeal joint of foot flexure. The preset overall sole thickness and height (h) accordingly, is defined by the said cover piece thickness plus the thickness of those sole parts made from hard materials. The front part of sole at least from the upper side, is made slightly cup-shaped and smooth, and at footwear bottom. Within zone (M) of metatarsophalangeal joint of foot flexure, the sole maximum thickness is 50%, namely 30-35% from the overall thickness (h) of sole provided that preset overall sole thickness (h), which is comprised of hard and soft materials thicknesses, is invariable. In addition to cross grooves available in cover piece at least one guiding longitudinal groove is made. The bottom of part of cross and/or longitudinal grooves is made in the front part of the sole with relatively hard material.
EFFECT: technical result provides for footwear sole using according to invention and lies in applying simple technology of manufacture; so, sole has maximum bending elasticity and flexibility in metatarsophalangeal joint of foot flexure without loss of side stability chosen as structural basis.
11 cl, 3 dwg
