Shoe with Anti-Skid Sole

Abstract

Footwear with a sole formed from an elastomeric material whose grip is improved on ground where the interface may include an intermediate foreign substance, this sole comprising lugs (31) separated from each other by grooves (35). The walls of the grooves (35) are cut into the thickness of the elastomeric material and delimit patterns with sharp angles in the profile of said lugs (31) which can pierce said foreign substance to establish direct dry contact between the two surfaces. Each lug (31) forms a star-shaped pattern having at least five arms in the form of stems (32) distributed over its, profile and each stem (32) is orientated radially towards the outside of the pattern and terminates in an end. Each stem (32) is separated from its neighbor by a recess (38) in the profile of the lug. Finally, each lug (31) has a stem (32) engaged in a space of the adjacent groove (35) which is delimited by a recess (38) between two neighboring stems in the profile of a second lug neighboring the first lug.

Description

TECHNICAL FIELD[0001]The present invention relates to footwear equipped with a sole intended to provide the footwear with a good slip-resistant contact with a work surface which may be made slippery by liquid or solid foreign substances. It is applicable to work or sports footwear, for example, which require good gripping qualities on naturally slippery ground and on very smooth natural or synthetic coverings such as Linoleum (registered trademark), varnished tiles, polished stone, and metallic surfaces, particularly when these surfaces are wetted or moistened by a liquid (such as water, oil or blood) or are covered by pools of liquid or are soiled by other types of impurity such as mud or ice.PRIOR ART[0002]Falls caused by involuntary slipping are among the most frequent and serious causes of accidents at the present time. This is particularly true of accidents at work, and specialists in the field have been searching for some time for ways of decreasing the frequency and seriousne...

AI Technical Summary

Benefits of technology

[0013]The mutual arrangement of the star-shaped patterns according to the invention also has the advantage of providing the sole with good resistance to the retention of foreign bodies such as pebbles in the grooves of the sculpture, because of the head-to-tail arrangement of the arms or stems in the stem-to-recess coupling position in said grooves. Because of the bending flex of the stems, the ejection of foreign bodies (such as small pebbles) is promoted.

[0029]Surprisingly, sculptures of footwear soles produced with this type of characteristic have a surface with a very distinctive feel when touched, which is different, all other factors being equal, from that of the prior art soles such as that shown in FIG. 1. The multiple tips terminating the stems of the lugs provide an unusual and unexpected sensation of softness combined with roughness and of “velvety” adhesion.

Problems solved by technology

Falls caused by involuntary slipping are among the most frequent and serious causes of accidents at the present time.

However, systematic studies of slip-resistant footwear by the applicants have shown that the slip-resistant properties of soles can be increased further in terms of the variety of risks of slipping and the circumstances, sometimes difficult to foresee, which may cause slipping.

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