DEP0013308MA - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

Registration date.:, <December 31, 1954 Announced June 7, 1956

GERMAN PATENT OFFICE

It is already known to adapt the tread area in the shoe to the anatomical nature of the foot by placing the insole or the ball mass on the three main tread parts of the healthy foot, namely in the area of the calcaneus and the ball of the big and small toes with flat extending recesses is provided. The insole is ^{pressed through at these points 1} by the foot according to its nature, which results in a permanent deformation of the tread surface.

Another system of adjustment of the performance area on the foot consists in the fact that an inlay, insole or cover insole is made in the shoe Rubber or rubber substitutes, with or without air chambers, are placed under which are located elastically deformed by the pressure of the foot. Such soles with air chambers are only in use known from rubber or rubber substitutes.

However, the invention relates exclusively to shoe bottoms made of leather and air-permeable Leather substitutes. The shoe bottom according to the invention, which is arranged concealed with flat running Recesses is provided differs from the designs mentioned at the beginning in that its layers are only in the area of the

609 529/135

Claims (4)

P 13308 VII / 71a Recesses are airtight and that the adjacent layers at least at the edges of the Recesses are connected airtight, so that: airtight chambers are formed from which the trapped air cannot escape. This design of the shoe bottom makes it possible to elastically adapt shoes with the foot Occurrence points while avoiding rubber or the like. In an economical manner factory-made to produce, with the shoes only yielding at the three main tread points. the The remaining part of the insole can be designed so that it gives the foot increased support. In the drawing, the invention is illustrated by exemplary embodiments, namely, FIG. 1 shows a sole in plan view; the
2 to 4 are cross-sections through a shoe bottom in the ball area, and the FIGS. S and 6 show longitudinal sections through a shoe bottom in the area of the shoe heel. FIG. 1 shows the locations of the tread surfaces on which the air chambers are arranged, specifically on the calcaneus 1 and on the ball of the big toe 2 and the ball of the little toe 3.
According to FIG. 2, the shoe bottom consists of an insole 4 and an outsole 5. The former has 2 and 2 on the underside in the area of the treads. 3 shallow recesses 6 so that air-filled chambers are created by joining the sole layers. The two layers of the shoe bottom consist of leather or air-permeable leather substitute materials and are only made air-impermeable in the area of the recesses by impregnation and / or surface treatment. In addition, the two layers 4 and 5 are glued together airtight, at least at the edges of the chambers, so that the air is prevented from escaping from the chambers. For gluing together, the known Aufsolenzemente and sole putty can be used, which have the property of penetrating deep into the roughened material surfaces, so the leather fibers, and to form an airtight, but not brittle film, such as. B. rubber solutions, latex, synthetic resin cement with plasticizers - and others. To prevent the chamber walls from sticking together at their edges, which occurs in the event of excessive To prevent local stress from occurring, the chambers are placed between the two layers Correspondingly shaped leaves * 7 made of paraffin or oiled paper are inserted. Fig. 3 shows a shoe bottom, which in addition to the The outsole and the insole also have a midsole 8. In this case, both the Insole as. the midsole is also provided with recesses 6; the recesses are arranged one above the other and. directed to the same side. According to FIG. 4, the recesses 6 are in the insole 4 and the midsole: 8, arranged on 'the facing surfaces one above the other', whereby enlarged air chambers are created and the flexibility is increased. In an analogous manner, according to FIGS. 5 and 6, in the area of the heel bump Si are also above of the shoe heel 9, recesses 6 are provided, namely according to FIG. 5 on the underside the insole 4 and the midsole 8-, according to FIG. 6 on the mutually facing surfaces of these two layers of the bottom of the shoe. In the same way, recesses can also be provided on the outsole made of leather or on the ball-out mass or on the ball-out piping. Pat ε ν τ α ν s ρ r Γι γ, η ε: ι. Shoe bottom made of leather or breathable leather substitutes with flat running, concealed recesses under the main treads of the foot, thereby characterized in that its layers (4, 5, 8) only in the area of the recesses (6) are airtight and the adjacent layers (4, s, 8) at least at the edges of the recesses (6) of the shoe bottom are connected to one another in an airtight manner, with chambers being formed from which the trapped air cannot escape. 2. Shoe bottom according to claim 1, characterized in that that the chambers forming recesses (6) on two or more of his Layers (4, 5, 8) are arranged one above the other and directed towards the same side (Fig. 3 and 5). 3. shoe bottom according to claim 1, characterized in that that the recesses (6) forming the chambers on two or more of its Layers (4, 5, 8) are arranged, with each two adjacent. Layers on top of each other and are facing each other so that together they each form an air chamber (Fig. 4 and 6). 4. Shoe bottom according to one of the preceding claims, characterized in that in the chambers of their shape adapted leaflets (7) are inserted from a material that prevents the chambers from sticking together forming layers (4, 5, 8) prevented, e.g. B. made of paraffin or oil paper. 1 sheet of drawings © 609 529/135 5. 56