CS74790A3 - Shoe - Google Patents

Abstract

Shoe has an inner assembly (48) having a deformable portion (46, 50) which acts together with the shoe upper (24) to adjust the girth of the shoe to fit feet of differing widths and girths. Pref. the portion is resiliently deformable and can be made of elastic sheet material, on adjustably tensioned spring or a deformable gas filled bladder. The elastic material can be a spandex fabric. The inner assembly (48) can be made in part of plastic foam.

Description

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The invention relates to a shoe having at least a partial deformable upper.

In order to fit the shoe well, it should not only have the correct length, but also the correct inner width as well as the correct dimensions regarding the perimeter of the front leg. This term refers to the circumference of the foot in the transverse direction, which is typically measured at the point of attachment of the toes to the meta-tarsal bones and at the instep. In conventional footwear, this goal is achieved only by producing nine or more increasing widths for each shoe length. In the event that all the widths are actually produced, it is still necessary to adjust the shoe as far as the circumference of the foot and to compensate for some differences between the circumference of the left and right nohytak, as they may occur during the day and are most often caused by the accumulation of liquid in the leg, that is These changes can reach up to two width numbers. Despite this, for reasons of economy in large-scale production, distribution is usually provided for a single length, usually only a single width, resulting in poor leg size and shoe width, which can lead to serious leg damage after extended periods of time. For these reasons, it is still necessary to design a practical and economical shoe, allowing the perimeter of the device to be relatively concealed so as to be suitable for a variety of shoe types, including those made of conventional uppers and soles.

The idea of a customizable shoe boot is not new. Visible means of treatment such as ribbons, straps, and the like are used, most of which usually allow the perimeter of the girth to be adjusted where it is most needed, and also at the point of the toe-to-metatarsal-toe joints. In addition, these compositions are not suitable for a variety of footwear such as moccasins, shoes to be worn together with skirts, especially on high heels and many other types. manual adjustment and also because for some people treatment is difficult, such as for small children, the elderly and the disabled. U.S. Patent Nos. 3,404,4683,331,708 and 3,686,777 (Rosen Henri E.) already disclose certain compositions for this purpose. none of them has been produced for several reasons. The treatment was too complicated for economical production and impurities could still be present in the compositions. In addition, these compositions have changed appearance, especially in the case of U.S. Pat. No. 3,404,468. In the embodiments of FIGS. However, these solutions provided the necessary evidence for further studies that led to the shoe design of the invention. U.S. Pat. No. 3,442,031 and 3,922,800 disclose a shoe wherein the leg circumference is adjusted by raising at least a portion of the upper surface of the insole, thereby changing the circumference but also raising the leg in the shoe. Since the treatment usually involves the front of the shoe so that the shoe will fit in all of its dimensions, there is an imbalance between the heel height and the forefoot. Furthermore, since the treatment usually reflects the difference between the left and right legs, it may happen that each foot will be placed above the surface when walking at a different height, which may result in ortho-pedic problems when worn further. U.S. Pat. Nos. 2,490,998,2691,227 and 3,436,842 describe a wear which is similar to the invention according to the invention, but the function is different. Indeed, the treatment only takes place when the foot is not loaded, whereas the treatment according to the invention relates to the shoe not loaded or loaded, with more emphasis being placed on the treatment of the shoe, since it is in this condition that there is difficulty with the shoe. of shoes that cannot be modified. In addition, dirt and pebbles can get into the described mechanism. In U.S. Pat. No. 3,693,270, deformable sponge materials are used which are fixed to the interior of the shoe to facilitate shoeing and draining without a slide fastener and the like; However, the shoe is too warm and, at the same time, the spongy material exerts some pressure on the foot, so that shoes of this type will not be used more widely. U.S. Pat. No. 4,736,531 discloses a shoe with a partial liner type which is located at the front of the shoe and is fixed to the lower portion thereof while the upper portion is free. This solution may limit the poor position of the tongue in the shoe, but does not provide a shoe trim, so that the narrower leg will be relatively free in the shoe, yet the user of the shoe may have a pressure in the instep and the thumb joint where the greatest bending stress occurs while walking. U.S. Pat. No. 4,038,762 proposes the use of viscous, cushion-sealed liquid materials, in particular for downhill ski boots with non-rigid soles, a solution for footwear used for walking. These and other designs using air, gel-like materials, gaseous substances, plastic foams, and other mechanical means are suitable for footwear with an inflexible sole, but are not suitable for walking shoes.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a shoe structure which comprises substantially concealed means for adjusting the leg circumference suitable for use with all shoe types.

The shoe according to the invention consists of a deformable upper, the fixed edge of which is non-elastically fastened to the sole or to the sole assembly, the circuit-adjusting means being housed inside the shoe defined by the upper and the groove. It is the inner shell of the shoe which is connected to the inner part of the upper and is formed by elastic means allowing the circumference of the shoe to be adjusted relative to the circumference of the leg deformation of the lateral parts of the upper, if desired. In a preferred embodiment, this deformation of the upper occurs only when the rib is loaded and especially when the leg is moving and the spread is not very visible. In one embodiment, the shoes of the present invention include an inner sheath of a non-stretchable material on either side of the foot coupled to a layer of ductile material under the foot with a loosely-insured insole between the foot and the layer. In another embodiment, the function of the inner shell elements is substantially inverted, so that the pulling material is disposed on both sides of the leg and the non-stretchable material is placed beneath the legs. In a further embodiment not shown in the drawings, the traction lining is supported on both sides of the foot and under the foot. This construction is particularly suitable for boating-type shoes. In other embodiments, the treatment means is formed by internal elements consisting of 2 non-stretchable inner sheaths connected to a non-stretchable lower shelf and an insole, these parts being connected to a frame that can be adjusted in a transverse direction. This frame is preferably, but not necessarily, connected to bridging portions of the hinge type and is provided with a variety of treatment means such as springs, other elastic materials, strands, cams, and the like. and, consequently, effectively adjusting the perimeter of the inner shell. In this embodiment, the insole of the unloaded shoe is at least partially raised to a height, only the shoe being loaded is deformed. Otherwise, the upper retains its original shape, given by the hoof, regardless of the shape of the foot. In another embodiment, particularly for cheaper shoe types, the treatment is formed by a traction sheath partially joined directly to the upper so that the upper can assume a transversely different shape if desired. This embodiment is advantageously used with a simple conventional connection of the upper and the skirt to the underside of their interlocking edges.

The particular embodiments of the shoe according to the invention will be described in more detail by way of example with reference to the accompanying drawings. 8 -

FIG. 1 shows a longitudinal cross-sectional view of a shoe according to the invention.

Fig. 2 is a cross-sectional view of the longitudinal line 2-2 showing the shoe of Fig. 1 in an unloaded condition.

FIG. 3 shows the same embodiment of FIG. 2 when the foot is at the top and the shoe is at least partially loaded.

FIG. 4 is a longitudinal sectional view of a shoe according to another embodiment.

Fig. 5 shows the shoe of Fig. 4 in line 5-5 in an unloaded condition.

Fig. 6 shows the embodiment of Fig. 1, the shoe being at least partially loaded.

FIG. 7 shows a cross-sectional view of another embodiment of a shoe according to the invention.

FIG. 8 shows a longitudinal sectional view of another embodiment of a shoe according to the invention.

Fig. 9 is a cross-sectional view of Fig. 8 along the stitches 9-9, the shoe being unloaded.

FIG. 10 is a cross-sectional view taken along the line 10-10 of FIG. 8, at least partially loaded;

Fig. 11 is a front elevational view of the shoe insole of Fig. 9, including a crisscrossable frame * and an insert that covers the insole with the frame deformation mechanism of the illustrated frame.

Fig. 12 shows a longitudinal sectional view of another embodiment of a shoe with a deformable frame.

Fig. 13 shows a shoe conditioning device of Fig. 12.

FIG. 14 shows a longitudinal sectional view of another preferred embodiment of a shoe according to the invention.

Figure 15 is a cross-sectional view of the shoe of Figure 14, taken along line 15-15, showing the shoe being on a leg with a smaller circumference.

Fig. 16 is a cross-sectional view of the shoe of Fig. 14, taken along line 16-16, in which case the boot is worn with a large circumference.

Obviously, a moccasin-type shoe was used to illustrate the drawings.

However, it is understood that this type of shoe was used for simplicity only and that the invention is not limited to a particular type of shoe, but is applicable to most shoe types. In the following description, reference numerals refer to the same parts having the same or similar function. - 10 -

1 to 3 show a single embodiment of a shoe according to the invention. The shoe 20 comprises a typical flexible upper 22, preferably leather, including an edge portion 24 and an upper portion 26, which are joined together in a suitable manner, for example by stitching to form a seam 28 on the front side of the shoe. The back of the shoe is provided with a conventional reinforcement 30, which overlaps the rim portion 20, a rim 32 overlapping the upper edge of the stiffening 30, upper 22, and inner skirt 46 usually sewn to the upper edge. the arrangement of the base 31, which has a heel 42, the heel portion 43, the middle portion 49, the instep portion 45 and the finger portion 47. In this case, the bottom 34 is formed by a uniform sole 34, as it is currently usually separated from the block and the rubber midsole 38 , which is bonded to the upper surface of the groove 36 by its bottom surface with glue or other suitable means. Typically, the seam 38 is connected to the lower part of the edge portion 24 by seaming at its edge. The shoe 20 is also provided with an adjustable inner lining 48 formed by an inner skirt 46 and an adhesive insole 50. In this embodiment, the inner skirt 46 is made of non-woven nylon fabric (Cambrelle, Faytex Corp., Brain-tree, MA), but any other non-ductile material may be used. The inner skirt 46 is joined at its upper edge to the upper edges of the skirt portion 24, otherwise it is not attached to the skirt portion except for the heel where it may optionally be attached to the hand-sewn outer seam 31 joining the stiffening 30 and the skirt portion 24. it is fixed by stitching its lower surface to the inner skirt 46 and forming with it an inner liner 48 surrounding the leg and the bottom. The insole 50 is preferably made of a drawing fabric, usually spandex, although any other elastic material may be used. Optionally, however, the insole 44 is preferably placed above the lower shell of the inner shell 46 and the insole 50 in the shoe. This insole 44 protects the seam from wear and protects the foot from the seam. It is preferably placed over the entire length of the shoe and corresponding to the maximum width of the shoe last, that is, the last shoe on which the shoe has been made. The insole 44 is not connected to the inner lining 48 and is easily removable for cleaning and removing any foreign material from the shoe.

FIG. 2 shows a shoe 20 in a non-loaded stitching insole 50, the insole 44 being in an elevated position. In this position, the bonding insole 50 has its smallest width and thus keeps the lower edges of the border portion 46 in the closest position. In this unloaded state, the upper 22 forms as well as the shoe on which the shoe was made. When the shoe is loaded, as shown in FIG. 3, the adhesive insole 50 is expanded so that the inner liner 46 corresponds exactly to the shape of the foot, particularly in the most stressed areas. 12 -

By enlarging it, the inner load 48 increases the entire shoe, which then sits better on the foot. In the case of a load, the lateral portions of the upper 22 are deformed somewhat outwardly while simultaneously moving the inner liner 48 and the insole 44 downwardly with the foot pressure, the extent of this deformation being equal to the foot volume and limited to the largest circumference on which the shoe was made.

FIGS. 4 to 7 show an embodiment similar to that of FIGS. 1 to 3, with the difference that the action of the individual portions is substantially inverted so that the tensile material surrounds the side and optionally the upper portions, whereas the non-drawing elements Fig. 4 shows a moccasin with upper 22 mounted on a fixed insole 58, preferably Texon or other conventional inner lining material 56 of spandex or similar resilient sheath 1, which is bonded , preferably with a non-stretchable insole 44 of Cambrelle and the like. FIG. 4 shows the same embodiment in which 28 is simulated and formed by the action of heat on the edge portion 24, which is now made in one piece with the top portion 26. This seam construction is typically performed by a device supplied by Geo. Knight Co. Brockton, MA. As best shown in FIGS. 4 and 5, the simulated seam 28 is stitched to the resilient skin 51 when no tension is generated. Naobr. 6, the seam 28 and the resilient skirt 51 are shown, in which case both parts are stitched together in an expanded state, as if the shoe had been loaded with a relatively wide foot. Furthermore, the upper 22 is deformed laterally in the same way as in FIG. 3 and now extends along the expanded simulated seam 28. In FIG. It will be appreciated that the simulated seam may be used together with the aforementioned shoe trim means or may be omitted, as shown in Fig. 7, where all of the finish is formed by the inner lining of the shoe and deformation of its side portions.

FIGS. 8 to 11 show another embodiment of a shoe according to the invention. In this embodiment, the treatment means is formed by an inner jacket 4β, a glue.

Fig. 8 shows a longitudinal section through a shoe in which the Cambrelle non-stretch material has been used not only for the inner shell 46, but also for the adhesive insole 50 disposed on the non-draw insole 62 and the filler layer 68, wherein the tabs 22 have been processed to the hoof along with the usual insole70. As best seen in FIG. 11, the frame 60 is formed by a hinge frame 61 which is a substrate for adjusting the circumference of the shoe. The hinge frame 6l is made of a suitable material, such as a plastic, preferably extruded polypropylene with a thickness of 7.2. mm to 1 cm, the frame is provided with notches in the areas 69 so that the narrow areas thus formed act as bridges allowing transverse deformation of the frame against the - 14 - tension of, for example, the steel spring 72 which is thereon The bridges may be omitted and the frame then segmented, with an empty space between the segments, the segments may be shortened, or their number may be limited. Optionally, the steel spring 72 is also connected to the insole, strengthening the non-stretch insole 62 and the filler layer 68 in the central region by means of the fastener 74 so that the deformaceram is aligned in the transverse direction. The adhesive insole 50 is provided on its periphery with an edge which is inserted above the hinge frame 6l and connected to its front side by, for example, an adhesive or radiation. Then, with the hoof upper 22, the inner skirt 46 is temporarily fastened by means of the frame retaining means, preferably by adhesive to the underside of the stitching insole 50 to engage it with the frame, whereupon the composition is removed. As already shown, the inner shell 46 is also connected to the upper 22 by a suitable method, for example by stitching or gluing. The upper 22 is then conventionally joined on a hoof with a conventional insole 70, and the lower edges are roughly end-jointed and joined with a sole, preferably a stick or any other method. FIG. 9 shows the shoe of FIG. 8 in an unloaded condition; FIG. 10 shows the same shoe in a leg-loaded condition which is less than the largest expected circumference of the foot for which the shoe is intended. - 15 -

FIGS. 12 and 13 show a further embodiment of the shoe according to the invention with the same function as the shoe of FIGS. 8-11, except that the means for adjusting the shoe of FIGS. 12 to 14 consists of a cam J78, manually adjustable from the inside of the shoe for adjusting the tension of the spring 87, the rear side of which is guided by the roller 82 and connected by the nip 44 at the fastening point 43. The strands leading from the front end of the spring cause the shoe to be fully trimmed and the liner for different leg width and circumference, by rotating the cam 78 by means of the screw 76, the movement of the follower 82 is achieved along the groove 80, whereby the tension of the spring 87 can be adjusted. The tensile 82 is also connected to a longitudinally mounted metal plate fixed to the underside of the insole to limit the movement pusher 82 to a longitudinal movement. Optionally, as shown, the plate may extend up to the bushing 74 whereby the insole is reinforced between the roller J32 and the bushing 74k to prevent longitudinal curl of the insole 44 during treatment. In the event that the spring is not used, the strands extend directly from the bushing through the intermittent line 88 and with the follower 82 to the end fastening point 83, the adjustment is entirely manual and manual adjustment of the cam determines the distance between the frame segments 61 on its opposite sides. It is thus possible to incorporate a steel spring 72 in this embodiment. 11 so that the obvpd can be adjusted automatically manually. Alternatively, a similar spring and / or cam 16 can be placed in the middle region of the shoe, in which case strands may be omitted.

Figures 14 to 16 show another embodiment of a shoe according to the invention, the function of which is the same as in the previous embodiments, but the construction is somewhat different, this embodiment being intended to be a critical and determining factor. Fig. 14 shows a shoe 90, typically a moccasin or boat with upper 92 or other suitable material for the upper, with an upper portion 94, preferably joined by a hand seam 96 to the edge 100, of the inner skirt 98 of the marginal portion 100 and, optionally, the inner shell 98a of the upper portion 94. All liners are made of a suitable duct material such as spandex or the like, especially a stronger and more durable Spandura (L.W. Warshow and Sons, Inc., New York, NY). The inner jacket 98 and, optionally, 98a are preferably rigidly connected to the upper 92 at a plurality of locations in the shoe. As shown, the seal is formed as seam 31, optional seam 91a, flange seam 91b, rear hand seam 91c, and optionally, when the inner sleeve 98 is fastened together with the edge portion 100 to the midsole 102 also as a conventional seam 106 (Littleway ^). bonded to the midsole 102 by conventional adhesive, both of which are conventional molded or sheet materials, such as leather, plastic, or rubber. Insole 106 is inserted into shoe 90 for comfort and durability of the shoe. - 17 -

Fig. 15 shows a nano shoe which requires only a very small shoe treatment or does not require this shoe. The upper 100 and the inner skirt 98 and 98a are in close contact, at the same time allowing the lateral portions of the top and / or its upper part to deform both to the height and the width for comfortable wearing of the shoe.

As shown in Figs. 16, inner casings 98 and 98a were compressed into full contact with the upper, without deviating from the shape determined by the bag or mold on which the shoe was made. In this case, it is a leg that is essentially the largest perimeter where the shoe was intended.

The inner skins 98, 98a are preferably made of an elastic tensile material, or other materials or mechanisms may be used to form a variable and adjustable leg-to-upper relationship at least in the most challenging area of the foot and the shoe. The other means may be a sealed or sealable plastic or similar material for various amounts of air and / or other gas, gels, liquid or flexible plastic foam. For example, the foam may be a closed-cell thermoset, polyurethane foam (United Poam Products Corp., Georgetown, MA) and other materials, preferably low density. Tytopenes can also be used to increase the elasticity of the shoe conditioning means 18. In such an embodiment, the foam is preferably covered by a somewhat elastic inner lining of the fabric or even the flaked material. These liners should at least feature a standard width adjustment option, that is, at least 6 mm in the strenuous areas of the shoe. In order to achieve the possibility of treatment and good compression, the lining should have a thickness of more than 1.5 mm for the fabric and 3 mm for the foam, ie. the initial thickness should be 9 to 12 mm. Such a thickness may cause unacceptable open spaces between the upper shoe and foot, but this phenomenon may be reduced or avoided by molding the foam such that its thickness will be reduced in the upper portion for better appearance and better fit of the foot in the shoe. such foam elements are used as unloading shoes.

There are a number of well-known processes for reshaping foam-based elements, including initial molding, removal of material, and the like, or repetitive pressing or pressing of sheet materials. The preferred process involves minimal equipment costs and maximum adaptability to a wide variety of shoe types, and involves the use of hot-pressable foams, as described above, which are capable of imparting a stable shape when heated to a temperature in the range of 127 to 150 ° C for 8 to 12 minutes. This can be achieved by providing the shoe with the above-mentioned heat-sealable polyurethane foam and a covered linen fabric, preferably with a total initial thickness of 9 to 12 mm, whereupon the desired shoe is subsequently supplied in such a way that a shoe or other mold is inserted into the shoe with the desired largest shoe circumference. The shoe is then heated in a known manner, for example by placing it in an oven and / or heating the hoof, for example by circulating hot oil or other liquid. After ironing, the least compressed parts of the foam will contribute to the possibility of adjusting the inside of the shoe. In a further possible embodiment (not shown), it comprises the use of small leaf springs which are located between the lining and the upper in the stressed areas of the shoe to facilitate the adjustment of the inside of the shoe. These leaf springs, cut from a thin sheet having a thickness of, for example, about 0.24 mm, can be deformed or bent to keep the upper part of the upper at a lower position with the sides of the upper deformed. so that the shoe suits the leg of a smaller circumference. The leg of the lighter circumference will push the upper part upwards against the fine pressure of the leaf springs.

In all of the foregoing, the shoes will automatically compensate for the differences in perimeter of the body in its most stretched parts. This achieves a substantial advantage over conventional shoe designs which are not conventionally provided with shoe volume adjusting means, such as loafers, boats and the like.

Claims (34)

- 20 - atent's claims I _2 ^, "203Γθθν i‘λΓ3Ί ΝλΛ cad, cv $ n I l 0 6. II L zI ¢ 150 ° 1. A shoe characterized by. 5e í Wio.i o: u, spo- it consists of at least a portion deformable with the sole of the sole forming a cavity for receiving the leg and an adjustable inner lining connected at least to the upper with a deformable portion cooperating with the at least partially deformable lid to modify the inner the circumference of the shoe depending on the pressure exerted on the shoe and the shape of the inserted leg with different width and different circumference. 2. A shoe according to claim 1, wherein the deformable portion of the inner lining is elastically deformable. 3. A shoe according to claim 2, wherein the resiliently deformable portion is made of an elastic material. 4. The shoe according to claim 3, wherein the elastic material is a flat elastic material. 5. The shoe according to claim 2, wherein the resiliently deformable portion comprises springs. 6. A shoe according to claim 2, wherein the resiliently deformable portion is formed by a frame provided with a spring to facilitate its elastic deformation. 7. The shoe according to claim 6, wherein the shoe is embedded in the shoe cavity and joined to the adjustable inner lining. 8. The shoe according to claim 7, wherein the spring is secured to the lower portion of the central line insole. 9. A shoe as claimed in claim 7, comprising means for adjusting the spring tension. 10. A shoe according to claim 9, wherein the means for adjusting the tension is manageable. 11. The shoe according to claim 1, wherein at least a portion of the inner lining is made of a non-stretchable material. 12. The shoe according to claim 1, wherein the inner lining includes a hinged movement of portions of the frame. -) - frame for - 22 - 13. The shoe according to claim 12, wherein the frame extends from the toe to the heel portion of the shoe. 14. The shoe of claim 12 wherein the frame is embedded in a central portion of the shoe. 15. The shoe of claim 1 wherein the upper comprises an extensible seam. 16. The shoe of claim 1 wherein said inner lining is a substantially non-deformable inner shell at the sides of said upper and resiliently deforms said elnau portion at the bottom of said shoe. 17. The shoe according to claim 1, wherein the inner lining is partially spaced from the bottom of the shoe when the shoe is not wrapped. 18. The shoe of claim 1 wherein said inner lining is secured to the bottom of said shoe. The shoe according to claim 18, characterized in that the inner lining is formed at least in part by a flat elastic material. 20. The shoe of claim 19 wherein said elastic sheet material is at least partially spandex. ? - - 23- 21. A shoe as claimed in claim 18, wherein the inner lining is at least partially formed by a foamed plastic. The shoe according to claim 21, characterized in that the foamed plastic is supported on the inner wall of the shoe at least in the area of greatest stress. 23. A shoe as claimed in claim 21, wherein the foam material is shaped to a thickness, suitably functional to the shoe and appearance thereof. 24. The shoe according to claim 23, wherein said shoe is shaped by heat and pressure. 25. The shoe according to claim 24, wherein the heat and pressure exert on the shoe when the shoe is deposited, followed by exposing portions of the shaped shoe to the heat beam. 26. The shoe according to claim 1, wherein the inner lining is connected to the upper by a spring. 27. The shoe according to claim 26, wherein the spring is received in a central portion of the shoe. ~ 90-24 - 28. The shoe according to claim 1, wherein the inner lining comprises means for retaining a different amount of gas. 29. The shoe according to claim 28, wherein the means for retaining various amounts of gas are formed by bag-like formations. 30. The shoe according to claim 29, wherein the web is made of plastic. 31. The shoe according to claim 30, wherein the bag formations are treated by the addition of non-gas. 32. A shoe as claimed in claim 31, wherein said means comprising different amounts of gas are adapted to provide a different space between said upper and said leg. 33. The shoe according to claim 1, wherein the inner lining is connected to the deformable tab in its upper portion. 34. The shoe as claimed in claim 1, wherein the inner lining is connected to the deformable tab below its upper portion. 58 960 / Ko Zastup JUDr. ZDENKA KOREJZOVÁ