ASKOLZEN-2 COMBINED ANTISKID LAYER FOR BOTTOM Russian patent published in 1996 - IPC

FIELD: manufacture and repair of footwear. SUBSTANCE: ASKOLZEN-2 combined antiskid layer for bottom is a system formed by small projections square in cross-section from long side equalling 2-5 mm and hole in the center with diameter of 1-2 mm. Large sand particles and small stones are accumulated during walking in holes of small projections. Width of depressions between projections is 0.5-1.0 mm. Projections are grouped and separated from one another by depressions 2-5 mm wide-Each group of projections is located on square area whose size is 10-20 mm long. In combination all above-indicated provide for good antiskid effect practically in all versions of road sliding covering. EFFECT: higher efficiency. 3 cl, 4 dwg