METHOD FOR SPORT SHOE SOLE

Abstract: A method for sport shoe sole provided with spikes, studs or other similar removable slide stops and manufactured for instance of plastic Within the sole is formed a cavity (27) or a hollow, whereto the spike (31) is attached by sliding its fastener flange (32) into the said cavity (27) in the lengthwise direction of the shoe. In order to allow this, the material between the cavity (27) and the bottom of the sole is provided with openings cut in the lengthwise direction of the shoe. The edges of the openings comprise flaps (36, 37), which close the openings in case the spike (31) is not used. At the bottom or at the edges of the cavity (27) is also formed a stopping means, for example a shoulder (34), which is used to lock the fastener flange (32) into its place.

Description: - - METHOD FOR SPORT SHOE SOLE The object of the present invention is a method for sport shoe sole provided with spikes, studs or other similar slide stops, and preferably manufactured of plastic or equivalent artificial material. In the previous art are known sport shoe soles, where flanged spikes are permanently attached into the sole. As an example of this type of sole can be mentioned the Finnish Patent Publi¬ cation n:o 34992. As sportsmen nowadays have to practice and race on various different tracks which may be covered by grass, gravel or rubber mastic, they respectively need several different track shoes suited for each particular type of track. One effort to avoid this drawback is to screw the spikes into flanges which are fixed in the shoe soles. An example of such sole construction is the Finnish Patent Publication n.o 24317. This method has been used, in addition to the so called spike shoes, also in studded football shoes and other similar footwear. The screw- in spikes have the drawback of a high price, which is due to expensive production methods. Moreover, the said spikes are re¬ latively heavy, and thus weaken the sportsman's potential to achieve good results. The purpose of the present invention is, among other things, to avoid the above described drawbacks. This can be achieved by the characteristic features of the invention, which are mainly enlisted in the Patent Claim 1. The present invention has several advantages over previously known sport shoes. The shoesole construction according to the invention also allows for the use of a new, lighter type of spike, which causes a remarkable decrease in the weight of the shoe. The sport shoe provided with a sole construction accor¬ ding t techni In the following the invention and its advantages are explained in detail with reference to the appended drawings. Figure 1 illustrates the sport shoe sole according to the invention. Figure 2 is an elevation view of Figure 1 in the A direction. Figure 3 is an elevation view of Figure 1 in the B direction. Figure 4 is an elevation view of another advantageous application of thei invention seen in the crosswise direction. Figure 5 is an elevation view of the Figure 4 embodiment seen in the lengthwise direction. Figure 1 shows part of the sport shoe sole according to the invention. In the drawing the sole material is divided into two sections 2 and 3 roughly in the crosswise direction of the sole, the former of these sections being located essentially under the ball of the foot and the latter under the toes. The said sections form protuberances or platforms protruding from the sole plane, and these protuberances are provided with grooves in the lengthwise direction of the shoe. Each section 3 and 2 contains a suitable amount of spikes 31, preferably 2 and 3 spikes respectively. The construction of the sole can be seen in more detail in Figure 2, which gives an elevation view of Figure 1 in the A direction. According to Figure 2, in both of the sections 2 and 3 there are formed grooves 21, 22 in the lengthwise direction of the shoe. The ridges 23, 24 between the grooves are cut in a fashion that the part which comes against the ground forms a narrow, even surface 25, 26. In between two ridges there is formed a cavity 27 or a hollow, where the flange 32 of the spike 31 will be located. The spike 31 is drawn by a dotted line in Figure 3, which is an elevation view of Figure 1 in the B direc¬ tion. According to Figure 3, the cavity 27 is closed at its front end 33. The back end, however, : is open, apart from the back stop 34. When the spike is located in the shoesole as indica¬ ted in Figure 3, the spike flange 32 rests against the back stop 34, which prevents the spike from falling off. the flexibility of the sole material, the spike can, however, easily be fixed by pressing or striking. As sole materials are preferably used various plastics which are customary in produ¬ cing soles for this type of sport shoes. Between the cavity 27 and the bottom of the sole there is cut the opening 35 for the spike 31. In order to avoid dust etc. from entering the cavity 27, for example when the shoe is used without spikes, the edges of the opening 35 are provided with security flaps 36, 37. There are preferably two flaps, one at each edge of the opening. In order to remove the spike 31 there are formed grooves 38 within teh cavity 27. By using a tool placed into these grooves it is then possible to press the sole so that the back stop 34 goes down and the spike can be removed for instance by striking a blow. It is also possible to from holes or openings in the flange of the spike, so that the above mentioned tool can grip the said holes and remove the spike with one and the same twisting movement. In a sport shoe where mainly spikes are used, it is advantageous to construct the shoesole as described above. In this case, the spike cavity 27 is suitably "open" in the back. Consequently, the force created in running and in pushing off keeps the spike in its place. The purpose of the grooves formed in the bottom of the sole is above all to prevent waters!iding and further slipping, which otherwise is fairly common on artifially covered tracks. Figures 4 and 5 represent another advantageous embodiment of the invention, applied to be used in a sport shoe for ball games. Ball games shoes, for instance football shoes, are normally provided not with spikes but with studs. Figure 4, which offers a cross-section view of a football shoe, seen from next to a stud, gives a clear illustration of the form of the stud 40. The stud 40 consists of the stud proper 41 and of the fastener flange 42. For the fastener flange 42 there is formed a cavity 43 in the shoesole. The cavity 43 is open at the front end, apart from the front stop 44. The front stop 44 rests against the front edge of the fastener flange of the stud, thus preventing the stud from falling off. In order to remove the stud there are formed the grooves 45 in the fastener flange 42, and the stud can be removed by using a tool placed into the said grooves. It is advantageous to produce the stud as well as the shoesole out of plastic. As can be seen in Figure 4, the part of the stud that rests against the shoesole, is made considerably broad. This provides a sufficient support for the stud. As for the stud itself, it can naturally be designed in any desired fashion allowed by the rules of the game. Particularly in socker shoes it is advantageous that the stud cavities are open at the front end. Thus the force created when kicking does not cause the studs to fall off. In practice it is advantageous to form in the front of the cavity a dust hollow 33, where possible dust etc. can be gathered so that it does not disturb the attaching of the spike. The fixing and stopping means can, in addition or instead of the back and front stops 34, 44, also comprise asperated or knurled surfaces, which are preferably located within the cavity and on the faste¬ ner flange of the stud or the spike.

Claims: PATENT CLAIMS 1. A method for sport shoe sole, provided with spikes, studs or other similar removable slide stops, the sole being preferably made of plastic or equivalent artificial material, where for each spike (31) or stud (41) or for each plurality of spikes or studs there is formed a cavity (27, 42) or hollow within the sole, the said cavity being designed for the fastener flange (32, 42) of the spike or equivalent to be slid into, c h a r a c t e ¬ i z e d in that the material between the cavity (27) and the bottom of the sole is provided with an opening (35), groove or equivalent for the spike (31) to be fastened into, so that the spike is attached to the shoe by pushing the fastener flange (32, 42) of the spike essentially in the crosswise direction of the shoe into the cavity (27, 43). 2. The method of Claim 1, c h a r a c t e r i z e d in that the edges of the grooves are provided with flaps (36, 37) which close the said groove (35) when the spike is not used within the said cavity. 3. The method of Claim 1 or 2, c a a c t e r i z e d in that at the bottom or at the edges of the cavity (27, 43) or hollow are formed stopping means (34, 44) in order to lock th,e fastener flange (32, 42) of the spike or the stud into the cavity. 4. The method of Claim 3, c h a r a c t e r i z e d in that the said stopping means are shoulders (34, 44), behind which shoulders vne edge of the spike or stud flange is locked so that the shifting of the flange (32, 42) against the attaching direction is prevented. 5. The method of Claim 4, c h a r a c t e r i z e d in that on both sides of the shoulder (34) there are cut openings (38) or hollows, where a tool can be placed in order to remove the spike (31) or equivalent. • 6. The method of Claim 3, c h a r a c t e i z e d in that the said stopping means consist of asperated or knurled surfaces or grooves formed at the bottom of the cavity. ^{ Ϋ.Ε. lT' OMPI IPO ^Z

Inventors: KOSKELA T
Applicants: KOSKELA T
Application year: 1980
Main classification: A43B13
IPC codes: A43B13, A43C15