Improvement to the anchoring of the non-slip member to a sole provided with retractable non-slip means, and related manufacturing method

Abstract

An improved non-slip device for a shoe sole of the type in which non-slip or skid-proof means such as nails or grappling hooks are provided, such means being not fixed directly to the sole but to rigid or semi-rigid means which can be folded into grooves obtained in the sole itself, where each non-slip member (10) as well as its member (24) anchored to the sole and provided with its own snap fastening means (25) are connected to each other in a non-disassemblable manner by a joint (14) provided with a double-headed steel pin (15) with a protruding end forming the axis of rotation about which the non-slip member (10) is rotatable by 180°, said joint being provided on the opposite side with a protruding attachment (16) having an eyelet (18) and forming the 90°rotation center of the axle (26) of said member (24) anchored to the sole, which is perpendicular to said steel pin (15) so that said anchoring member (24) cannot be separated from the non-slip member (10). The joint (14), once molded from a suitable plastic material, is incorporated by overmolding, using another plastic material having a different melting point, to obtain it in a single piece together with the anchoring members (24) and the non-slip members (10), thus avoiding any accidental splitting of the assembly, but preserving the freedom of movement of the different components.

Dependencies are inferred from the claim text.