RU2066967C1 - Askolzen-2 combined antiskid layer for bottom - Google Patents

Abstract

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

Description

 The invention relates to the production and repair of shoes, in particular, can be used in the manufacture of bottom shoes (soles, platforms, heels, soles, heels, etc.).

 The problems of sliding, falling and injuring pedestrians in icy conditions, as well as in other cases of slippery roads, remain unresolved to this day. One of the reasons for this situation is that the problem of anti-skid shoes has not yet been considered as a very complex, multifactorial problem. The fact is that the conditions of a slippery road can be fundamentally different. This is not only icy conditions, i.e. clear ice. This is often ice covered with a thin layer of water, dry or wet snow; ice covered with a thick layer of snow or porridge from snow and mud, etc. It may not be ice at all, but a tiled or marble coating, or asphalt, poured with a layer of liquid clay or a solution of cement, etc. The listed conditions of the road on which you can slip are far from equivalent in terms of selecting or creating the necessary anti-skid equipment. A universal remedy for any conditions does not exist. Therefore, the present invention is based on the use of a combination, a complex of various anti-skid agents in one layer device.

 The closest analogue of the invention is a combined anti-skid layer fixed on the running surface of the bottom of the shoe, consisting of protrusions separated by depressions and having conical shaped openings in the protrusions (German Patent No. 1257638, 1967).

 The disadvantages of the closest analogue are that, firstly, it has not very high anti-skid performance under really slippery conditions; secondly, he does not use such effective anti-skid methods as the combination of wide and narrow depressions between protrusions; and finally, thirdly, with the natural wear of the layer, its anti-skid characteristics change for the worse: the outer diameter of the conical hole becomes smaller and the smooth surface of the protrusion becomes larger.

 The proposed combined anti-skid layer works more efficiently in various road conditions. The essence of the invention lies in the fact that five to seven methods (means) of anti-slip are simultaneously embedded in the layer: the layer material itself is made of microporous rubber or special plastic; a system of large protrusions with wide depressions between them; a system of small protrusions with narrow depressions between them; almost cylindrical (with very low taper) holes in small protrusions, which increases the total length of the braking edges on the surface of the layer and ensures their preservation during layer wear. In addition, on clean smooth ice, the holes in small protrusions play the role of suction cups, which also contributes to anti-skid . Finally, the narrow depressions between the small protrusions (the width of these depressions are 0.5-1.0 mm) and the holes in the small protrusions, 1-2 mm in diameter, are selected so that when walking it is possible to collect and hold on the surface a layer of large grains of sand and small ones pebbles, which especially increases the effectiveness of the combined anti-skid layer.

 Examples of combined layers are shown in FIG. 1-4. In FIG. 1 shows a layer in which a combination of a system of small protrusions in groups is practically implemented. These groups play the role of large protrusions with sides of a square of 10-20 mm. The hollows between these squares, having a width of 2-5 mm, are an anti-slip remedy on ice covered with a thick layer of snow, mud or porridge. Small protrusions anti-slip on clean ice and on ice covered with a thin layer of snow. Small protrusions come into operation also with a thick layer of snow, when it is already destroyed (shifted) by large protrusions.

 In FIG. Figure 2 shows "Option B" of an anti-skid layer, which can be produced by the industry in the form of a tape 10-12 cm wide as well as option A (Fig. 1), but with holes in small protrusions. These holes, if not clogged with grains of sand, can work as small but numerous suckers. If the large protrusion consists of 16 small, 16 suction cups are obtained. This embodiment is shown in FIG. 2. Other options were investigated: with twenty-five (5 • 5) and forty-nine small protrusions squared (7 • 7). The total number of holes (suction cups) on one sole of the male boot is in all cases very significant, up to two thousand or more.

 The main variants of the combined layers of anti-skid have been tested for four seasons. The layer pasted on the shoes in early autumn withstands the entire ice season (autumn, winter and spring) and works reliably all this time. This is achieved thanks to a specially selected sufficiently large depth of the depressions between the protrusions. Moreover, in the process of natural wear of the layer, the tread pattern remains unchanged until the protrusions are worn out. It is important that the depressions (slots) between shallow protrusions and between groups of protrusions are necessarily made of the same depth. This depth is selected depending on the size of the shoe, the material of the layer, the selected size of the small protrusions and finally on the thickness of the layer planned for allowable wear. In practice, the depth of the depressions should be 2-5 mm.

 The specific configuration of the elements of the combined layers of anti-skid was also selected based on considerations of simplicity, manufacturability in production and reliability in operation. The square shape for small and large protrusions and the cylindrical, more precisely, slightly conical shape for the holes are recognized as optimal, although other tread patterns are possible.

 The following practical uses of the invention are provided. Option A (figure 1), the simplest, can be implemented by the owner of the shoes personally, at home. For this, a hacksaw and other suitable tools on a "bald", worn pair of boots saw through wide and then narrow depressions (see figure 4). More qualified, this can be done in shoe repair shops.

 It is necessary to establish industrial production of the tape according to options A and B (Fig. 1-2). From this tape, again at home, and even more so in repair shops, you can cut and put stickers on the soles and heels (Figs. 3 and 4). In the industrial production of shoes, it is possible to produce products whose lower surface layer (sole, platform, outsole and heel) are made in options A and even better B.

 The hollows between the protrusions and groups of protrusions, as well as the holes in the small protrusions, should have a slightly conical shape and smooth transitions (rounding) in those places where the transition from the protrusion or hole to the continuous underlayer of the tape, sole, platform, etc. These design features must be observed both to reduce the concentration of local stresses at the base of the protrusions, and to ensure good adaptability of the combined layers of anti-skid in production. YYY2

Claims (3)

 1. The combined layer of anti-skid for the bottom of the shoe, containing protrusions separated by troughs with a hole in the center of each of them, characterized in that each protrusion has a square shape in cross section with a side length of 2-5 mm, the diameter of each hole is 1-2 mm, and the width of the depressions between the protrusions is 0.5-1.0 mm, while the protrusions are located in groups separated from each other by depressions 2-5 mm wide, and each group of protrusions is placed on an area with a square shape, the length of which is 10 -20 mm.  2. The layer according to claim 1, characterized in that the depth of the troughs between the protrusions is equal to the depth of the trough between the groups of protrusions and is determined by the size of the shoes, protrusions and their groups, the material of the anti-skid layer and the thickness of the allowable wear of the layer.  3. The layer according to claims 1 and 2, characterized in that the holes in the protrusions have a conical shape, and the troughs are made tapering to the base of the protrusions with the formation of smooth transitions at the base of the protrusions to reduce the concentration of local stresses and improve manufacturability.

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