There is a demand for fashion items that may be altered from time to time to adapt to different occasions, to changing fashion and new ideas and even to the wearer's varying moods or just to satisfy the craving for novelty.

This requirement has an increased importance where shoes are concerned, for the reason that this item is expected to complement the wearer's dress in terms of colour, design, style etc.

An extensive collection of shoes that will suit each colour and each style in a person's garderobe is generally too expensive as well as requiring a large amount of storage space. Even so, having a suitable shoe for each dress will never suffice as the purchase of new clothes and changes of fashion demand the acquisition of futher items.

Retail stores also confront the problem of stocking a comprehensive selection of sizes, colours and models available. Apart from the costs of keeping such a stock, storing considerations also limit the variety of models available in a single store.

It would be desirable therefore to provide a fashion item such as a shoe that is alterable and adaptable.

It is known to make shoes with replaceable outsoles that are received within a cavity provided in the bottom of the middle sole and attached to it by removable fasteners. Such a shoe is described in US 6,389, 712 Bl. However the shoe of US 6,389, 712 B I has the disadvantage that only the lower parts of the soles are replaceable while the middle sole is fixedly attched to the vamp, such that the general design and the colour of the shoe remain unchanged when the outsole is replaced by a different one.

It is therefore desirable to provide a shoe in which the two main parts-sole and upper-are completely exchangeable by the user, such that the colour, design, material, shape of sole and heels are variable at will.

It is further known in the prior art to make shoes in which the uppers are partly exchangeable. In these shoes, described in US 2002/0124434 A1, a connection piece is provided on each side of the sole, the connection pieces are fixedly attached to the said sides of the sole and the main parts of the upper are detachably fastened to the connection pieces by fastening means.

These shoes have the disadvantage that the variability of the upper is considerably limited as the colour and the material of any exchangeable part need to remain the same as th colour and material of the connection pieces. The design of the exchangeable part is also limited by the need to fit the sides of the upper to the design of the connection pieces. This type of assembly is limited to basic sandals and is not adaptable for elegant shoes.

In US 5,852, 885 a footwear having a simplified assembly is described, with a sole having a perimetric edge section with raised portions and the upper having horizontal strap portions that are attached to the said raised portions of the soles by means of metal tabs inserted into the holes provided in the said raised portions.

This footwear has the disadvantage that the upper cannot be dismantled and exchanged by the user on his own. The need for a raised perimeter further limits the applicability of the shoe and the variability of the designs that may be made by this method of assembly that is mainly suitable for heavy designs and casual sandals or pumps.

The present invention is designed to overcome the drawbacks of the prior art by providing a shoe with an upper and a sole that are completely separable and attachable by easy to operate attachment means, such that both upper and sole are replaceable and exchangeable to adapt to the wearer's changing requirements. The invention enables a large variety of changes in the design of the upper, from casual sandals to pumps, platform shoes and elegant thin strap sandals, from low heels to high heels of diverse shapes and in any colour or material as desired.

Summary of the Invention The present invention provides a shoe with an upper and a sole that may be separated and reassembled by using easy to operate attachment means. A series of fixed attachment means are embedded in the sole and the upper is attached to the sole by a series of releasable attachment means that are connected to the said fixed attachment means through apertures in the upper. The upper may be separated from the sole by simply disconnecting the releasable attachment means from the fixed attachment means, either the sole or the upper may be replaced by a different design and the shoe may then be reassembled by connecting the new combination of upper and sole using the said releasable attachment means.

Brief Description of the Drawings Fig. 1 is a side view of a sole that is suitable for the variable shoe of the invention Fig. 2 is a top view of a single piece upper Fig. 3 is a top view of an upper with two separate parts connected by velcro straps Fig. 4 is a perspective view of an upper, a sole and a series of screws for connecting the upper to the sole Fig. 5 is a perspective view of a complete shoe with a sole and upper Fig. 6 is a transparent top view through the upper of an inventive shoe Fig. 7 is a perpendicular cross section of the shoe of Fig. 5 along dashed line 1-11 Detailed Description of the Invention The invention overcomes the drawbacks of the prior art by providing a shoe with a sole and upper that are fully exchangeable without the need for any professional technical equipment. The sole and upper may be assembled and disassembled by employing easy to operate attachment means.

The sole has a main body and a peripheral wall and the upper has a main sheet area and an edge.

In accordance with the invention a series of fixed attachment means are embedded in the sole and the upper is attached to the sole by a series of releasable attachment means that are connected to the said fixed attachment means through apertures in the upper along the edge of the upper. The upper may be separated from the sole by simply disconnecting the releasable attachment means from the fixed attachment means, either the sole or the upper may be replaced by a different design and the shoe may then be reassembled by connecting the new combination of upper and sole using the said releasable attachment means.

Where the fixed attachment means are anchor nuts, the said anchor nuts are provided within the main body of the sole with their longitudinal axes lying at a right angle to the peripheral wall of the sole and horizontally extending into the main body of the sole, such that the openings of the said anchor nuts are facing out of the main body of the sole on the surface of the peripheral wall of the sole. The anchor nuts may be disposed at any chosen points along the said peripheral wall of the sole according to design requirements and they may be arranged in separate groups or all the anchor nuts may be aligned in a single sequence, at equal distances between them.

In accordance with the invention, the sole may be made according to many different designs, with low or high heels, thick or needle thin heels, with rounded, square or triangular front. The sole may have a larger or smaller thickness, it may be a wedge section sole or a platform sole and it may be made of wood or cork or plastic such as polyurethan or rubber or synthetic rubber or any other suitable material.

The sole may comprise an insole, a middle sole and an outer sole or it may be made without an insole and an outer sole as known. Where the sole is made of an insole, a middle sole and an outer sole, the middle sole may be made of wood, cork, rubber, synthetic rubber, plastic such as polyurethan or any other material suitable for the purpose of containing the fixed attachment means. The outer sole and the insole may also be made of various materials as known in the art.

The middle sole may be made according to many different designs, with low or high heels, thick or needle thin heels, with rounded, square or triangular front. The middle sole may have a larger or smaller thickness, it may be made in the shape of a wedge section sole or a platform sole.

The inventive shoe further comprises an upper with a main sheet are and an edge that may be made of any suitable material such as leather, plastic or textile and that may be decorated with various kinds of decorative elements as known, such as perforation, stitching, colouring, lacing etc.

According to the invention, in the upper a series of rounded apertures are provided along its edge sections, in respective positions that suit the respectable positions of the fixed attachment means in the peripheral wall of the sole, enabling the upper to be assembled to the sole by placing the upper over the sole, superpositioning each of the said apertures on a congruent fixed attachment means in the peripheral wall of the sole and attaching a releasable attachment means through the said aperture to the said fixed attachment means. Where threaded anchor nuts are provided within the main body of the sole, the shoe is assembled by placing the upper over the sole, superpositioning each of the said rounded holes in the said upper on a congruent opening of a respective anchor nut in the peripheral wall of the said sole and threading a threaded screw of suitable size size with a threaded stem and a head through each of the said apertures respectively and through each of the congruent openings of the said anchor nuts respectively into each of the said anchor nuts respectively to removably attach the upper to the sole. The apertures may be fortified by metal or plastic rings as known.

It is a main advantage of the inventive shoe that the sole and upper may be easily assembled and disassembled without the use of complicated technical equipment, such that the user may purchase a collection of several uppers with different designs, colours, decorations or made of different materials to be used with the same sole, or he may purchase several different soles to be used with different uppers as desired. In this manner the user achieves a large variation of footwear suitable for many different occasions and diverse outfits while saving the expense for the purchase of a large number of complete shoes. It is a further advantage of the invention that at any time the user may add a new upper or a new sole to the preexisting items without carrying the full expense of a new pair of shoes.

Sales of the inventive shoes are facilitated by the possibilty of acquiring several pairs of shoes for the price of a single pair.

It is another advantage of the invention that the separate items to be assembled in accordance with the invention may be stored in a space that is considerably reduced relative to the space required for the same number of different shoes. This is also advantageous for outlets that may reduce storing space by stocking separate collections of soles and uppers. Transportation costs are reduced by smaller space and weight requirements.

It is yet another advantage of the invention that assembling the shoe in accordance with the invention saves time and production costs by eliminating the need for various steps such as stretching and rubbing the leather, gluing and other processes as known. Other savings of costs arise from eliminating the need for the ends of leather extending from the periphery of the upper to be sewn or glued into the sole for attaching the upper to the sole as known in shoes of the prior art.

The need for a last or shoe tree is also eliminated as stretching is not required.

The inventive shoe is suitable for women's shoes as well as children's and men's footwear.

The invention will be described hereinbelow in accordance with a preferred embodiment. It will be understood however that other variations and modifications of the inventive shoe may be made while still remaining within the scope of the description and the claims.

Fig. 1 is a side view of a sole that is suitable for the variable shoe of the invention, generally designated A. The sole A has a middle sole Al, an insole A2, a rear outsole A3.1 and a front outsole A3.2.. The insole A2 may be made of various suitable materials such as leather, plastic, textile etc. and it may be made in a colour that suits the colours of the different vamps designed for the sole A. The middle sole Al may be made of wood or cork or plastic such as polyurethan or rubber ot synthetic rubber or any other suitable material and it may be made in different shapes, flat or with heels of different designs such as low heels, high heels, stiletto or thick heels etc. The middle sole may be made in the shape of a wedge section heel sole or a flat sole, rounded, triangular or squared down at the front, in different colours and with many kinds of decorations, as known. It will be understood that the sole A may also be made without the outer soles A3. 1, A3.2 and without the insole A2, such that it cosists only of the middle sole A 1. Around the middle sole Al extends a peripheral wall W through which a series of anchor bolts are introduced into the middle sole Al on the right side of the middle sole Al and a parallel series of anchor bolts are introduced into the middle sole Al through the peripheral wall W on the left side of the middle sole Al. The said anchor bolts are introduced in a direction perpendicular to the peripheral wall W, such that the said anchor bolts extend horizontally into the said middle sole Al. In the sole A of Fig. 1 a series of 12 anchor bolts with inner threading are provided in the middle sole A1, divided in groups of three. In Fig. 1, that shows a right sole from the right side, the openings 01, 02,03, 04, 05 and 06 of two groups of anchor bolts, each consisting of three anchor bolts are seen.

While the drawing of Fig. 1 shows a sole in which 12 anchor bolts are provided, the invention may be carried out by making soles with any number of anchor bolts that is suitable for assembling the inventive shoe. Thus the number of anchor bolts may be 5 or 7 or any other suitable number. The anchor bolts may be arranged in two groups as in the sole A of Fig. 1 or they may be arranged in more than two groups or in a single sequence with equal distances between the said anchor bolts, depending on different design or construction considerations.

Fig. 2 is a top view of an upper for a right shoe generally designated B that is suitable to be attached to the sole A of Fig. I for assembling a shoe in accordance with the invention. The upper B may be attached to a sole of the type shown in Fig. 1, or it may be used for a high heel sole, a flat sole, a wedge section heel sole, a stiletto heel sole or a sole of any other design in which suitable fixed attachment means such as anchor bolts are provided.

The upper B has a butterfly design, with a main sheet area having a right part B I and a left part B2, connected by parallel seams 4.1, 4.2. The right part Bl has a front edge section 1, a fore right edge section 2, a middle right edge section 3, a rear right edge section 4 and a back edge section 5. In the right part Bl, adjacent to the fore right edge section 2 a series of three rounded apertures are provided, respectively designated Yl, Y2 and Y3. A further series of three rounded apertures, Y4, Y5 and Y6 are provided in the rear right edge section 4 of the right part Bl. The two series of rounded apertures Yl, Y2, Y3 and Y4, Y5, Y6 are disposed at respective positions within the right part Bl of the upper B that are designed to fit the positions of the openings 01, 02,03 and 04, 05, 06 respectively in the right outer wall of the sole A of Fig. 1, such that when the upper B is placed over the sole A, the rounded apertures Yl, Y2, Y3 and Y4, Y5, Y6 in the right part Bl will overlap the openings 01, 02,03 and 04, 05, 06 in the peripheral wall W of the said sole A on the right side of the said sole A.

The middle right edge section 3 of the right part Bl of the main sheet area is cut off in a semicircular form to air the foot as known. It will be understood by those versed in the art that the middle right edge section 3 may be made without the semicircular cut such that a shoe with a closed upper is achieved and in such case further rounded apertures may be provided in the said right part B I adjacent to the said middle right edge section 3 or the number and arrangement of the rounded apertures may remain the same as in Fig. 2, according to any design requirements.

The left part B2 of the main sheet are of the upper B has a front edge section 6, a fore left edge section 7, a rear left edge section 9 and a back edge section 10. A middle left edge section 8 extends between the said fore left edge section 7 and the rear left edge section 9, cut off in a semicircular shape to accommodate the curve of the foot as known.

It will be understood by those versed in the art that the middle left edge section 8 may be made without the semicircular cut such that a shoe with a closed upper is achieved and in such case further rounded apertures may be provided in the said left part B2 adjacent to the said middle left edge section 8 or the number and arrangement of the said rounded apertures may remain the same as in Fig. 2, according to any design requirements.

In the left part B2 of the upper B a series of three rounded apertures Y7, Y8, Y9 are provided adjacent to the fore left edge section 7 and a further series of three rounded apertures Y 10, Y 11 and Y12 are provided adjacent to the rear left edge section 9 of the said part B2. The two series of rounded apertures Y7, Y8, Y9 and Y10, Yll, Y12 are disposed at respective positions that are designed to fit the positions of further openings provided in the peripheral wall of the sole A of Fig. I on the left side of the sole A that are not visible in Fig. 1, such that when the upper B is placed over the sole A, the apertures Y7, Y8, Y9 and Y10, Y11, Y12 in the left part B2 will overlap the said openings in the peripheral wall W on the left side of the said sole A.

The upper B is decorated with a leaf motif 11, a stitching 12 extending all around the edge sections of the upper B and a lacing 13.

It will be understood that the various decorations on the upper B are shown in Fig. 2 just by way of example and they are not intended to be limiting the invention in any way.

It will be further understood that the general design of the upper B is shown in Fig. 2 just by way of example and it is not intended to be limiting the invention. The upper B may be made in many different shapes and designs and it may be made with or without decorative stitching, etching, perforations, colouring etc. The upper B may be made of a single piece of material such as leather, plastic or textile and it may be made of several pieces of the same material or any combination of suitable materials.

In Fig. 2 the outer perimeter of each of the rounded apertures Yl-Y12 is fortified by a metal ring as known. It will be understood that the rounded apertures Yl-Y12 may be made with metal rings of various decorative designs or they may also be made without any fortification, according to design considerations A further example of an upper for a right shoe according to the invention is shown in Fig. 3, generally designated C.

The upper C is made of a main sheet area consisting of two separate parts, a right part Cl with strap extensions 1.1, 1.2 and 1.3 and a left part C2, with strap extensions 2.1, 2.2 and 2.3. The straps 2.1, 2.2 and 2.3 may be lined with velcro or other similar material and the straps 1.1, 1.2, 1.3 may be covered with velcro or a similar material, such that the respective pairs of overlapping straps 1.1, 2.1, 1.2, 2.2 and 1.3, 2.3 may be reversibly connected as known. It will be understood that this arrangement increases even further the versatility of the inventive shoe as it enables using the same upper C for several different sizes by connecting the said overlapping straps 1.1, 2.1, 1.2, 2.2 and 1.3, 2.3 at different points along the velcro material as required.

Referring again to Fig. 3, the right part Cl has a front edge section 3.1, a fore right edge section 4.1, a rear right edge section 5.1, a back edge section 5b and a middle right edge section 6.1, wherein the said middle right edge section 6.1 is cut off in the shape of a semicircle. The left part C2 has a front edge section 3, a fore left edge section 4, a rear left edge section 5, a back edge section 5a and a middle left edge section 6, wherein the said middlle left edge section 6 is cut off in the shape of a semicircle. A decorative stitching 7 is provided along the said edge sections 3,4, 5, 6, 5a and 3.1, 4.1, 5.1, 6., 5b and along the edge sections of the strap extensions 1.1, 1.2, 1.3 and 2.1, 2.2, 2.3, inwardly removed from the said edge sections and parallel to the said edge sections.

It will be understood that the general design of the upper C is shown in Fig. 3 just by way of example and it is not intended to be limiting the invention in any way. The upper C may be made in many different shapes and designs and it may be made with or without decorative stitching, etching, perforations, colouring etc. The upper C may be made of any suitable material such as leather, plastic or textile and it may be made of any combination of suitable materials.

On the right part Cl, adjacent to the fore right edge section 4.1 of the right part Cl of the upper C, a series of rounded apertures Y1, Y2, Y3 are provided. Another series of rounded apertures Y4, Y5, Y6 are provided adjacent to the rear right edge section 5.1 of the right part Cl. The two series of rounded apertures Y1, Y2, Y3 and Y4, Y5, Y6 are disposed at respective positions within the right part Cl that are designed to fit the positions of the openings O1, 02,03 and 04, 05, 06 respectively in the middle sole Al of Fig. 1, such that when the upper right part Cl of the upper C is placed over the sole A, the rounded apertures Y 1, Y2, Y3 and Y4, Y5, Y6 in the right part Cl will overlap the openings O1, 02,03 and 04, O5, 06 in the peripheral wall W on the right side of the said middle sole A1.

Similarly in the left part C2 of the upper C, adjacent to the fore left edge section 4 of the left part C2 of the upper C, a series of rounded apertures Y7, Y8, Y9 are provided. Another series of rounded apertures Y 10, Y 11, Y 12 are provided adjacent to the rear right edge section 5a of the left part C2. The two series of rounded apertures Y7, Y8, Y9 and Y10, Y1I, Y12 are disposed at respective positions within the left part C2 that are designed to fit the positions of openings of a suitable number and position in the peripheral wall W of the middle sole Al of Fig. 1, on the left side of the said middle sole Al that is not shown in Fig. 1, such that when the left part C2 of the upper C is placed over the sole A, the rounded apertures Y7, Y8, Y9 and Y10, Yl 1, Y12 in the left part C2 of the upper C will overlap the openings in the peripheral wall W on the left side of the said middle sole A 1.

The outer perimeter of each of the rounded apertures Y1-Y12 is fortified by a metal ring as known.

It will be understood that the rounded apertures YI-Y12 may be fortified by other means or by metal rings of a different shape or they may be made without any metal rings, according to design considerations.

It will be further understood that the upper C of Fig. 3 may be used with many types of soles such as high heeled soles, stiletto heeled soles, wedge section soles, flat soles and soles of any other design in which suitable fixed attachment means such as threaded anchor bolts in a suitable number and position are provided for attaching the upper C to such sole.

It will be also understood that any uppers of different designs that are intended to be attached to the sole A must be made with the same number of rounded apertures as in the uppers B and C and the positions of the said rounded apertures must be designed so that when such upper is placed over the sole A, the rounded apertures in the said upper will overlap the openings of the anchor nuts in the peripheral wall W of the main sole Al.

Referring now to Fig. 4, a flat sole D made for a right shoe and the upper B of Fig. 2 that is also made for a right shoe are shown before being assembled to produce the inventive shoe. The flat sole D comprises an insole d3, an outer sole dl and a middle sole d2.

As seen in Fig. 4, the upper B is bent along the stitching line 4.1 into the domed shape of an upper in a finished shoe. The upper is shown from the right side, such that the right part Bl is visible, with the leaf motif 11 on the said right part Bl, the stitching 12, the lacing 13, the front edge section 1, the right fore edge section 2, the right rear edge section 4 and the right middle edge section 3 of the right part B 1 and with the rounded apertures Y1, Y2, Y3, Y4, Y5, Y6.

As seen in Fig. 4, openings 01, 02,03 and 04,05, 06 of a series of threaded anchor nuts, not shown in Fig. 4, that are provided in the right side of the middle sole d2, are disposed at respective positions that fit the positions of the rounded apertures Y1, Y2, Y3 and Y4, Y5, Y6 in the part B I of the upper B. It will be understood by those versed in the art that due to this arrangement of the openings of the threaded anchor nuts 01-06 and the round apertures Y1-Y6, each of the round apertures Yl-Y6 may be aligned with a respective opening 01-06 such that the round apertures Y1-Y6 overlie the respective openings 01-06. It will be understood that the flat sole D is suitable to being attached to the upper B due to the number and position of the fixed attachment means provided in the middle sole d2 of the flat sole D that suits the number and position of the rounded apertures in the upper B.

At the bottom of Fig. 4 screw heads HI, H2, H3, H4, H5 and H6 are shown, wherein beneath each of the screw heads H I-H6 a threaded stem is extending in a right angle to the said screw head, not shown in Fig. 4. The upper B and the sole D are attached by driving a screw with a threaded stem through each of the openings 01-06 and through each of the round apertures Y I-Y6 overlying the said openings 01-06 into each of the threaded anchor nuts provided in the said middle sole d2 through the peripheral wall W of the said middle sole d2 by using a simple screwdriver, whereby the right side B1 of the upper B becomes reversibly attached to the right side of the sole D.

It will be understood that in a similar manner the left side B2 of the upper B may be reversibly attached to the left side of the sole D by using a simple screwdriver to drive suitable screws, each having a head and a threaded stem through rounded apertures disposed on the left side B2 of the upper B into the openings of the anchor bolts provided in the left side of the middle sole d2 through the peripheral wall W of the said middle sole d2, whereby the left side of the sole D becomes reversibly attached to the left side of the upper B and a shoe with exchangeable upper and sole is achieved, as seen best in Fig. 5. It will be understood that the various elements of the sole D and the upper B shown in Fig. 5 are the same elements shown in Fig. 4 and they are marked with the same numbers that appear in Fig. 4. The rounded apertures Yl-Y6 in the upper B and the openings 01-06 in the middle sole d2 are covered by the screw heads Hl-H6 respectively and therefore they are not visible in Fig. 5.

It will be understood that while the screw heads Hl-H6 are used in the preferred embodiment due to functional considerations, they may also be employed as decorative elements by making them in different colours, shapes and materials. It will be further understood that the screw heads Hl-H6 may be used to add various decorative elements such as chains hanging between two or more screw heads. It will be further understood that such decorative elements may easily be exchanged, added or removed by using a simple screwdriver to release them from the screw heads H-H6.

Referring now to Fig. 6, the inventive shoe is shown in transparent top view to better demonstrate the preferred embodiment of the invention from both sides. Fig. 6 shows a left shoe with a sole F and an upper G, the said upper G having a left part GI and a right part G2, connected at seam G3.

The left part Gl has a front edge section 1, a fore left edge section 2, a middle left edge section 3 and a rear left edge section 4. In the left part Gl, adjacent to the fore left edge section 2 a series of three rounded apertures are provided, respectively designated Yl, Y2 and Y3. The middle left edge section 3 of the left part Gl is cut off in a semicircular form to air the foot as known. It will be understood by those versed in the art that the middle left edge section 3 may be made without the semicircular cut to form a closed shoe and further rounded apertures may be provided in the said left part G I of the upper G adjacent to the said middle left edge section 3 or the number of rounded apertures provided in the said left part G 1 may remain the same, in accordance with any design requirements.

Referring again to Fig. 6, a further series of three rounded apertures, respectively designated Y4, Y5 and Y6 are provided in the left part G 1 of the upper G adjacent to the rear left edge section 4 of the said left part G I.

The right part G2 of the upper G has a front edge section 5, a fore right edge section 6 and a rear right edge section 8. A middle right edge section 7 extends between the said fore right edge section 6 and the rear right edge section 8, cut off in a semicircular shape to air the foot as known. In the right part G2 of the upper G a series of three rounded apertures Y7, Y8, Y9 are provided adjacent to the fore right edge section 6 and a further series of three rounded apertures Y10, Yl 1 and Y12 are provided adjacent to the rear right edge section of the said part G2.

It will be understood by those versed in the art that the middle right edge section 3 may be made without the semicircular cut to form a closed shoe and further rounded apertures may be provided in the said right part GI of the upper G adjacent to the said middle right edge section 3 or the number of rounded apertures provided in the said right part G1 may remain the same, in accordance with any design requirements.

As seen in Fig. 6, a series of anchor bolts N1-N12 are provided in the peripheral wall W of the sole F, horizontally extending into the sole F on the left and right sides of the sole F, in a direction perpendicular to the peripheral wall W of the said sole F and with the openings of the said anchor bolts N1-N12 facing outward of the said peripheral wall W.

The anchor bolts Nl-N12 have inner threadings as known and they are split at the lower end E.

The anchor bolts N1-N12 are so disposed that when the upper G is bent into a dome shape and placed over the sole F such that the left front and rear edge sections 2 and 4 of the part Gl and the right front and rear edge sections 6 and 8 of the part G2 overlap the walls of the sole F, each of the rounded apertures Y1-Y12 may be brought to overlie one of the openings of the said anchor bolts Nl-N12 respectively.

A series of threaded screws with heads HI-HI 2 and threaded stems S1-S12 are then driven through each of the round apertures Yl-Y6 respectively and through each of the openings 01-06 adjacent to the said round apertures respectively into the threaded anchor bolts N1-N12 provided in the said sole A using a simple screwdriver, whereby the upper G becomes reversibly fastened to the sole F, and a shoe with exchangeable upper and sole is achieved as seen best in Fig. 5.

It will be understood that whenever the user wishes to exchange the sole F for a different sole or exchange the upper G for a different upper, he may do so by simply driving the threaded screw with the heads Hl-H12 and the threaded stems Sl-S12 out of the threaded anchor bolts N1-N12, and then attaching the sole F to a new upper or attaching the upper G to a new sole as seen in Fig.

6.

The inventive attachment method is better understood by looking at Fig. 7 that is a perpendicular cross section of the inventive shoe of Fig. 5 along dashed lines 1-11.

Fig. 7 shows a perpendicular cross section of the shoe of Fig. 5, with a flat sole D and an upper B.

The outsole dl, the insole d3 and the middle sole d2 of the flat sole D are shown in perpendicular cross section. On the left and right sides of the middle sole layer d2 the peripheral wall W that is extending around the middle sole layer d2 is shown. The upper B is attached to the sole A at opposite points PI and P2 on the right and left sides of the sole A respectively.

At point PI an anchor bolt N2 is provided in the middle sole layer d2, horizontally extending into the said middle sole layer d2 in a direction perpendicular to the peripheral wall W of the middle sole layer d2. The anchor bolt N2 is split at an end E2 and it has an inner threading. A threaded screw, with a head H2 and a threaded stem S2, is lying fastened inside the anchor bolt N2, reversibly attaching the upper B to the sole A.

Similarly at point P2 that lies opposite point P I on the other side of the peripheral wall W of the middle sole d2, an anchor bolt N8 is provided in the middle sole layer d2, horizontally extending into the said middle sole layer d2 in a direction perpendicular to the outer wall W of the middle sole d2. The anchor bolt N8 is split at an end E8 and it has an inner threading. A threaded screw, with a head H8 and a threaded stem S8, is lying fastened inside the anchor bolt N8, reversibly attaching the upper B to the sole A.

It will be understood that due to the above described construction of the preferred embodiment, the user may change the upper or the sole at will by simply driving the threaded screws out of their respective anchor bolts, replacing the upper with a different one or replacing the sole with a different one and reattaching the separate parts of the shoe by driving the threaded screws back into their respective anchor bolts.

It will be further understood that the invention is not limited to the above described attachment means. The anchor bolts and the threaded screws may be differently constructed and other attachment means may be used for the purposes of the invention.