Anti-skidding sole

An anti-skidding sole for boot or shoe, said sole being made of rubber or similar material and having a longitudinal axis and a lower surface comprising a metatarsal part and a heel part, wherein:

• said lower surface comprises a first set of integral, rib-like members covering the entire surface of the metatarsal part of the sole and a second set of integral, rib-like members covering the entire surface of the heel part of said sole;
• the rib-like members of said first and second sets have an identical, trapezoidal cross-section and comprise raised contact surfaces which altogether form a flat, overall bottom surface, across an arch area of the sole;
• the rib-like members of the first set extend in a regular manner at a constant, radial distance from each other without closing up on themselves all around a first central point located on the longitudinal axis of the sole substantially in the middle of the metatarsal part of said sole;
• and
• the rib-like members of the second set extend in a regular manner at a constant, radial distance from each other without closing up on themselves all around a second central point located on the longitudinal axis of the sole substantially in the middle of the heel part of said sole, each of said rib-like members defining a plurality of anti-skidding edges evenly aligned circumferentially to said first and second central points in every direction from said central points to oppose a frictional force substantially identically in any direction to any skidding motion while simultaneously allowing air boxed-up under said sole to escape thereby avoiding formation of an air cushion.