ITTV20080168A1 - CONSTRUCTION ELEMENT FOR SHOE WITH THE HEEL, MADE IN A SINGLE PIECE OF COMPOSITE MATERIAL. - Google Patents

Description

Description of Industrial Invention entitled:

Construction element for heeled shoe, made in a single piece of composite material

In the field of classic footwear it is known that for women's shoes, but not necessarily only for women's ones, there are almost an infinite number of models characterized by shapes and configurations that can be the most varied. One of the models that is always topical are the shoes with heels, which can have different height measurements. This type of shoe must ensure solidity, safety and aesthetic integrity through the union of the various parts that make it up, streamlining and lightening the structural part and at the same time allowing the shoe not to break. We are in the field of classic women's shoes but not strictly to them. The action of this innovation is aimed at the inside of the shoe, in its structure and therefore not immediately visible because the elements that compose it are hidden.

The state of the art and the invention object of the present patent application are represented in the figures below:

State of the art:

Table 1, figure 1: state of the art "fork" or shank (A hole for the rivet, B; rib, C hole for screw).

Table 1, figure 2: state of the art - fiberboard or "strong" cardboard.

Table 1, figure 3: state of the art - heel. (D hole for screw, E reinforcement core, F rubber pad).

Table 2, figure 4: state of the art - perforated metal plate. (A1 rivet hole).

Table 2, figure 5: state of the art - schematic construction of the shoe in section (G sole, H fork, I perforated metal plate, L strong, M insole, N coating, D hole for reinforcing core screw, F rubber),

Innovation:

Table 3 Figure 6: Section of the heel and sole in one piece. (Or element

in a single piece of composite material, P hole or seat for the grommet).

Table 4 Figure 7: Axonometry of the heel and sole made in a single piece; with the internal rib in negative that starts from the inside of the heel and reaches the sole. (Q rib).

Table 5 Figure 8: Heel and "famice" made in a single piece of composite material, the heel inside is empty, with the hole for the rubber insert, while the sole can be made of various materials such as: leather , rubber and plastic that are glued to the composite at the point where the "famice" ends and the sole begins. (R heel and foot made in one piece. P hole or seat for rubber, S glue point, T sole).

Table 6 Figure 9: Axonometric view of the heel and "famice" made in a single piece of composite material, with the negative rib starting from the inside of the heel and reaching the end of the "famice". (Q rib, S area for gluing).

Table 7 Figure 10: Section of one of the possible methods of construction of the shoe. (U composite material, V filler material, Z leather or other material, W cleaning insole, F rubber pad).

Description of the state of the art.

For the construction of heeled shoes, elements in ferrous material are currently used (Tab.1-fig1) and a particular type of cardboard (Tab.1-fig2), called fiber which in the processing phase is called "strong ". These elements that are not visible externally because they are inside the shoe, are the main elements for its realization. Let's begin the description of these details, starting from the metal element (Table 1-figt) which has an arched shape, anatomical to the plantar arch, which precisely at this point is in correspondence and can be called indistinctly with the name of " fork "or shank (hereinafter the term" fork "will be used). Describing the various functions of this element, the forks

packs three. The first is the backbone and therefore serves to give structure to the shoe and only in the use to which it is intended according to its normal function. The second is a support point for fixing the heel, by means of the use of an appropriately sized screw that passes through a hole in the fork (Tab.1-fig1C). Said hole is not intended specifically as a circular hole, but also in the shape of a slot so that the screw used can easily find its natural position with respect to the hole in the heel. It also serves the head of the screw which finds in the ferrous material of the fork the element that does not yield when the heel is clamped. The third function: it is to keep the shape of the shoe unchanged over time. It should also be added and clarified that the "fork" has these functional characteristics thanks to a rib (Table 1-fig1B) present along its central axis. This rib can take on variable dimensions, depending on the size of the fork which in turn refers to the shoe size number.

This rib, as the word itself says, has the task of giving strength to the "fork" since without it it would not be able to counteract the compressive force it would be subjected to during the use of the shoe. These are the three functions that the "fork" together a slightly larger perforated metal plate (Plate 2-fig4) is added to the rib, fixing it with rivets. This plate serves to make the perimeter of the "fort" and the sole more resistant and less harsh the stiffness of the fork, which could be felt under the pressure of the foot. Moving on to the description of the fiberboard (Tab.1-fig2), it should be specified that it is glued to the fork in order to take its shape. Other construction methods place the fork between two layers of fiberboard, while still others use a single cardboard positioned between the fork and the heel. Characteristic of the fiberboard: it is of avp (and a consistent thickness and a certain strength, which however deteriorates over time.

constructive element contains in itself several functions: The plane facing the foot, pee and a solid support base for the heel, the one towards the heel, serves as a base for fixing the same. Another element mentioned previously, to explain the function of the "fork" and the "forte", even if it is not expressly part of the structure of the shoe, is the heel (Tab.1-fig3). It is the element that allows you to give the desired height to the shoe. It is not an "empty" element but inside it, immersed in the material that surrounds it, there is a metal core (Tav, 1-fig3E), which can be understood in various ways according to the function it has to perform.

It can be made of solid metal (rod), drawn metal, or as a tube. This structure that is typical of the heel serves to ensure its resistance to compression caused by the weight of the body in the act of walking. If this soul were not there, the heel would often be subject to breakage. An appropriately sized hole (Table 1-fig3D) allows the heel to be fixed to the rest of the shoe. The lower part of the heel is always completed by a rubber pad which is housed in the seat provided in the heel (Tab.1-fig3F).

The disadvantages of the current construction system are:

1) A high cost for the construction of the various individual structures: (the "fork", the "forte", the perforated metal plate, the heel with or without reinforcement core) due to the fact that each structure is made by a single manufacturer , with its own management and raw material costs.

2) These individual structures are then assembled at other laboratories, with a further addition of production costs.

3) Another handicap is represented by the management of the various individual structures and the difficulty for the control chain, to have an ever-current vision of the finished product,

4) A further disadvantage is due to the higher percentage of error due to the realization of the various individual pieces that make up the shoe.

5) It should also be noted that individual structures such as the "fork" and the perforated metal plate, made of molded metal, free of anti-corrosive treatments, are subject to

rust that damages the various components that surround them.

6) The first to be compromised is the bonding between the structures, which then has repercussions

leather of the upper

7) Then having the heel fixed to the shoe with a screw, there has always been the possibility that this will loosen with the inevitable breakage and loss of the same.

8) The "strong" over time loses its compactness and tends to deform where it is not supported.

9) What is also not insignificant is the weight that these constructive elements carry as a whole.

10 Last but not least, many single parts assembled together are less secure than a single piece.

The purpose of the present innovative invention, object of the patent application, is to solve the drawbacks described up to now.

The present patent application relates to an innovative method for the production of heel, "foot" and sole in a single piece of composite material with both variable and constant thickness. With reference to (Table 3, Fig. 6), the structure known to be made from all the individual Structures ("fork" Table 1-fig1, "forte" Table 1-fig2, perforated metal plate Tav, 2-fig4 and screw Tab.2-fig5) is replaced by a single structure in composite material, known for its self-structural capabilities and qualities. This structural feature important for the functioning of the shoe is not expressly visible because there are no recognizable elements other than the composite material with which it is made. The possible variations in the realization of the piece will concern: the shape of the heel which, in addition to being empty, can be full, or

lower and empty in the upper half. Of course this half must be related to the

heel and is susceptible to variations. The sole that forms a single body with the rest of the object can be characterized by a recess of appropriate size which has the function of

materials such as leather, or non-slip. To further strengthen the "famice" (Table 4, Fig.7Q), a rib is created in negative and then hollowed out in the composite material which can assume various profiles based on the thickness available. The construction technique of the piece also intrinsically involves the creation of further ribs; all without modifying or compromising the appearance of novelty and inventive activity identified. Another strong point of this innovation is that the construction of the shoe no longer requires the fork (Table 1-fig1), the perforated plate (Tab.2-fig4) and the "forte" (Tab.1-fig2) that we have described above. In it the optimal combination of the thicknesses and their correct positioning allows to create a structure that alone is able to contrast and withstand the tensions and compressions to which a shoe with heels is subjected. In addition, correct sizing and positioning of the ribs present in the inner part of the heel,

of the "famice" and of the sole, allow to calibrate its flexibility, rigidity and torsion. ; It is also possible to make the heel and the "famice" in a single piece of composite material (Table 5, Fig. 8R and Table 6, Fig. 9), to be completed with a sole in leather or other material ( Table 5, Fig.8T). These are the main characteristics and innovative techniques that this object contains in itself and which summarize them are: the uniqueness of the element that constitutes the heel, the "famice" and the sole, the elimination of the "fork", the "strong" , the perforated metal plate and the screw which are replaced by the intrinsic characteristics of the composite materials that can be controlled through the variation of the thickness and the use of some ribs. The positive consequences of this innovation are: a reduction in the weight of the shoe because eliminates the fork, the "forte", the perforated metal plate and the soul of the heel. An increase in the solidity of the "famice" heel where the concentration of forces to which a shoe is subjected is greater

thanks to the use of composite materials. Increased durability of the aesthetic shape of the composite shoe tends to return to its original shape after being stressed. The certainty of having a heel that will never come off (being a single piece with "collar" and sole) unlike the one mounted with the screw and the glue that always presents this doubt. Furthermore, while the fiberboard deteriorates over time and loses its consistency by deforming, the composite remains unchanged for a very long period of time while maintaining the comfort of the shoe. Finally, the elimination of the fork eliminates the natural deterioration of the iron (i.e. rust) which affects the glues and leathers that make up the shoe, ruining it.

Claims (6)

CLAIMS 1. Constructive element for shoe with heel, characterized by the fact that it is made of a single piece of composite material (Tab.3, Fig.6 / Tab4, Fig.7 / Tab.5, Fig8 and Tab.6, Fig.9 ) with both variable and constant thickness. 2. Construction element for shoe with heel, as per claim 1, characterized by the fact that the construction element made in a single piece (Table 3, Fig.6 / Table 4, Fig7 / Table 5, Fig.8 and Tab. 6, Fig. 9) eliminates the use of the fork "(Tab. 1 fig. 1), the" forte "(Tab. 1 fig. 2) and the perforated metal plate (Tab. 2 fig. 4) . 3. Constructive element for shoe with heel, as per the preceding claims, characterized by the fact that the heel can be: full, empty or in the lower half full and empty on the upper one, furthermore the piece has a reinforcement rib (Table 4 , Fig7Q / Table 6,Fig9Q) which can take on variable shapes and sizes depending on the thicknesses available. 4. Constructive element for a shoe with a heel, as per the preceding claims, characterized in that the sole has a recess, to house materials such as leather or other materials, by gluing the parts. 5. Constructive element for shoe with heel, as per the previous claims, characterized by the fact that when the work is completed the shoe is lighter, the heel will never come off, furthermore the duration of the aesthetic last is greater and that the shoe is safer . 6. Constructive element for a shoe with a heel, as per the preceding claims, characterized in that it can be completely or partially covered with materials which are suitable for being shaped, such as leather or other materials and which can be painted, colored or decorated.