Homogenous unit sole

were:

DE-PS 845766 DE-0S2062838 FR-PS1062835 FR-PS1305652

- 2 No. 357900

The invention relates to a one-piece homogeneous profile sole of resilient elastomeric material having a bottom and a foot carrying top.

There are numerous shoe constructions known which have facilities for upholstery, tread resistance, shock absorption and air cooling. Examples of such arrangements are described in the following U.S. Patent Nos. 2,725,645, No. 2,627,676, No. 1,606,529, No. 1,653,059, No. 1,711,302, No. 2,114,421, No. 3,043,025, No. 3,237,322, No. 3,316,662, No. 3,555,697, No. 3,803,731 and No. 3,849,915. Compared to the known prior art, the invention provides an improved shoe construction, which is particularly suitable for sports shoes.

that the bottom surfaces of all said profile elements lie in one plane with the bottom surface of the edge and the height of the first-mentioned profile elements and the secondary profile elements allows a deformation of these elements in three mutually perpendicular axial directions of the cylindrical elements, wherein the sole has uneven thickness, which in the heel area larger is greater than the heel area in the toe area and the flexor area, and that the toe area is markedly upwardly inclined from the flex area. A preferred embodiment consists in the fact that the bottom in the toe area is inclined in the other areas by an angle of about 20 ° relative to the horizontal bottom and beveled at the end of the heel area at an angle of about 20 ° relative to the adjacent sole area.

The cylindrical profile elements in the sole according to the invention, which is particularly suitable for sports shoes for athletics and ball games, give a particularly good adhesion to the floor, eliminate the risk of slipping and dampen the shock when putting on the foot, whereby fatigue is reduced and the movements of the Athletes with even greater accuracy. The bevels in the toe and heel area facilitate the rolling of the foot and improve the transfer of repulsive forces, such as cracks, to the ground. Since the cylindrical elements increase the adhesion to the ground, the new type of sole shape offers better performance in jumping competitions and also in other sports. This professional sole provides exceptional safety on a large number of sports fields, ranging from natural and synthetic wings and comparable soft surfaces to hard surfaces of both synthetic and natural types. By constructing and grading the cylindrical elements relative to the lowermost level of the sole, one also achieves protection of sensitive sports field surfaces from unnecessary damage.

For a better understanding of the invention, the following description of an embodiment will serve in conjunction with the drawings. 2 is a plan view of the sole, wherein individual parts are broken away, FIG. 3 shows the part of a section along line 3-3 in FIG a bottom view of the sole and Figure 5 shows the part of a section through the sole along the line 5-5 of Figure 4.

The sports shoe shown in Fig.l has an upper part -10- of an ordinary shape, which may consist of leather, textile material, plastic or similar material for tops and any combination of said materials. The top is joined to a new natural or synthetic rubber outsole 11 by adhesives and / or vulcanization or other conventional techniques (see U.S. Patent Nos. 3,477,148 and 3,301,855). Preferably, the top may have the so-called "Oxford" shape, which includes a tongue -8-, eyelets -9-, a reinforced heel support -19-, a padded collar -12-, suitable ventilation holes -13- and a toe part -14 - having.

In general sport shoes of the type mentioned, the upper part has a circumferential edge portion -15- (Figure 2), which is attached by means of adhesive -16- on the surface -17- of the one-piece sole -11-. An insole -18- made of leather, textile or other suitable plate-shaped material

- 3 No. 357900 placed on the edge -15-, with this at -15'- glued and / or with the top -17- the

Sole -11- to be connected by means of an adhesive -16'-, so that a support surface is formed for the foot.

The new sole unit -11- has a circumferential upper edge -20-, in which the lower edge -15- of the Oberteües -10-, as can be seen from Figure 2, is used. The surface -17- of the sole unit -11- is shaped to conform to the foot in an orthopedic manner. Thus, as shown in Fig. 3, the supporting surfaces of the sole surface below the foot are generally concave, as are the parts of the sole 11 supporting the heel. Further, a network of air ducts -13- is mounted in the upper surface -17- of the sole unit -11-. The net 30 has a channel 31 extending from the rear edge of the sole to the structural part thereof and a plurality of angular channels 32-32 which intersect the main channel 31 and extend over the whole surface of the sole. Each of the channels -31, 32- ends in an air hole -33- on the side edge of the sole. In addition, the network has several angular distribution channels -34- in the middle of the sole, which terminate within the edge -20- surrounding the sole.

In order to improve the flexibility of the sole unit -11- and to reduce the total weight of the sole unit, as well as to give the sole inside a honeycomb-like structure, are several cells or cavities -35- between the channels -31, 32- of the network - 30- trained.

The properties of the new sports shoe when running, walking or other movements are enhanced by the shock-absorbing property of the new shoe. This is achieved by the shape of the lower surface of the sole -11- and by its entire contour. The front parts of the sole from the ball of the foot to the toe are raised in relation to the remaining part of the sole, wherein the elevation angle A is about 15 to 20 °. Similarly, the rearmost parts are formed to increase in angle with respect to the horizontal main part of the sole by an angle B of about 15 to 20 °.

Figures 4 and 5 show how the underside of the sole is formed to achieve maximum shock absorption and tread resistance.

The sole -11- is surrounded by a rim or bed 51, the lowermost planar surface of which lies in a first plane AA of the sole. Reverted is a second bottom surface BB, which is formed by depressions --53-, and in this further depressions -54- form a third plane CC, wherein all these three planes are parallel to each other.

From the plane CC extend downwardly first cylindrical shock-absorbing Profüelemente -55-, which each have a bottom surface -56- which lies in the plane AA. These elements are separated from the remainder of the sole by an annular recess -60-. The elements -55- are arranged both along the periphery of the bottom of the sole and in the middle surface of the bottom of the sole, as can be seen Fig.4. An increased shock absorption and improved tread resistance is achieved in that each of the profile elements -55- is associated with acting as a mini-shock absorber profile element -57- of cylindrical shape, which lies in the lowermost portions of the Profüelementes -55- and of an annular Deepening -58- is surrounded. The tread resistance and shock absorption can be improved even more

The described arrangement of tread elements -50, 60- according to the invention is freely movable due to its size and configuration, so that it can be deformed in the direction of the X, Y and Z axis upon occurrence of the sole as a result of bending and compression. This gives a very good shock absorption and impact resistance on different surfaces (hard, soft, smooth, rough, grassy, ​​cinder track, etc.). Additionally, individual regions of the sole may bend along the channels relative to other regions due to the shape, disposition, and taper of the foremost and rearmost sole regions.

The new sole is made from an elastomeric material, for example, natural or synthetic rubber, preferably a thermoplastic styrene butadiene block polymer, which is described on pages 114 and 116 of the journal "Modern Plastics Encyclopedia" 1973/74. Such a sole is extremely flexible and comfortable, owing to the properties which adhere to the rubber material, in combination with the physical characteristics which the sole possesses by the honeycomb-like nature

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Structure and the tread structure is given. The extraordinary comfort, sure-footedness and shock absorption as well as air cooling is also for all other kinds of shoes, boots and

Footwear ideally suited.