Outer sole for shoes and shoes comprising such outer soles

Abstract

An outsole for a shoe, at least a portion of the outsole has a grid structure of intersecting lines along the course of which the outsole has increased flexibility The grid structure is irregularly formed by lines which are determined on the one hand at least by the course of the connecting curve through the toe joints between the distal phalanx and the proximal phalanx of the big toe and between the respective middle phalanx and proximal phalanx of the second, third, fourth and toes, and on the other hand by the course of the respective intermediate spaces between the five toes when the sole is positioned to fit under the wearer's foot. In the same way, a shoe having an outsole of the kind described above is also proposed.

1 - 11 . (canceled) 
     
     
         12 . An outsole for a shoe, comprising:
 a grid structure over at least a portion of the outsole having intersecting lines along a course of which the outsole has increased flexibility, the grid structure is irregularly formed by lines determined by one of:
 a course of a connecting curve through toe joints at least one of:
 between a distal phalanx and a proximal phalanx of a big toe; and 
 between a respective middle phalanx and proximal phalanx of second, third, fourth and fifth toes; and 
 
 a course of respective intermediate spaces between five toes. 
   
     
     
         13 . A shoe comprising:
 an upper part for covering at least a portion of a foot of a shoe wearer;   a sole that is connected to the upper part;   an insole of the sole configured to come into contact with an underside of the wearer's foot when the shoe is worn; and   an outsole of the sole, wherein at least a portion of the outsole has a grid structure of intersecting lines along the course of which the outsole has an increased flexibility, the grid structure is irregularly formed by lines determined by at least one of:
 a course of a connecting curve through toe joints one of:
 between a distal phalanx and a proximal phalanx of a big toe; and 
 between a respective middle phalanx and proximal phalanx of second, third, fourth, and fifth toes 
 
 a course of a respective intermediate spaces between the five toes. 
   
     
     
         14 . The outsole according to  claim 12 , wherein the grid comprises at least one additional line selected from lines determined when the sole is positioned to fit under the wearer's foot by:
 a course of a connecting curve through the toe joints between a respective distal phalanx and the middle phalanx of the second, third, fourth and fifth toes,   a course of the connecting curve through the toe joints of the respective proximal phalanx and a metatarsal bones of the five toes,   a course of a connecting curve of articulation of the toes with cuneiform bones and cuboid bone, respectively,   a course of a connecting curve in front of a navicular bone, and   a course of a connecting curve behind the navicular bone to behind the cuboid bone.   
     
     
         15 . The outsole according to  claim 14 , wherein the increased flexibility is achieved by at least one of two-fold and three-fold profile indentations in the outsole. 
     
     
         16 . The shoe according to  claim 13 , wherein the shoe additionally has an insole, wherein the insole has a flat back side in direction of the outsole of the shoe and a dome-shaped structure on a front side, wherein
 the dome-shaped structure has a base surface a maximum of 25% of an insole surface; and   the dome-shaped structure is positioned under the cuboid bone of the shoe wearer.   
     
     
         17 . The shoe according to  claim 16 , wherein the dome-shaped structure is positioned under the medial side of the cuboid bone of the shoe wearer, the cuboid bone borders the navicular bone on one side and a calcaneus bone on the other side. 
     
     
         18 . The shoe according to  claim 17 , wherein the dome-shaped structure has a base surface that is a maximum of 10% of the insole surface. 
     
     
         19 . The shoe according to  claim 18 , wherein the dome-shaped structure has a longitudinal to transverse ratio in a range from 1.2:1 to 3:1. 
     
     
         20 . The shoe according to  claim 19 , wherein the dome-shaped structure has a height in a range from 3 to 20 mm. 
     
     
         21 . The shoe according to  claim 20 , wherein a longitudinal axis of the dome-shaped structure extends along the medial edge of the cuboid bone that encloses an angle of from 5° to 35° with the longitudinal axis of the insole. 
     
     
         22 . The shoe according to  claim 21 , wherein the insole and the dome-shaped structure both have complementary connection components, wherein the connection components of the insole are formed with the connection components of the dome-shaped structure for the separable connection of insole and dome-shaped structure.