System of footwear bearing insole

FIELD: personal use articles.

SUBSTANCE: shoe (10), namely, a high-heeled shoe, comprising a convex bearing element (40) for the middle part of the foot, made of a conformal or compression cushioning material having a compressive factor of deformation (CFD) from 0.6 pounds per square inch (psi) to 30 pounds per square inch (psi) at 25% compression, and which has such size and shape that its height (h1) is sufficient to ensure contact and support, for at least some area of the middle part (116) of user's foot (110). The bearing element (40) for the middle part of the foot is made of an elastomeric material with a maximum thickness of 10 mm and 22 mm, and includes a support platform (42) and sidewalls (44 and 46). In a preferred version, the subject of footwear additionally comprises a supporting element (58) for the forefoot, which is located on the upper surface of the insole (20), on the front section (28) of this insole (20). Also an insert is proposed for a shoe with a high heel, which supporting element (40) for the middle part of the foot is made of the above material.

EFFECT: improved usability.

19 cl, 10 dwg

 

The technical field

The present invention relates to a system of support insoles for shoes, preferred embodiments which are intended for use in high heeled shoes.

Prior art

The present invention generally relates to articles of footwear, including, first of all, the high-heeled shoes, which are usually women, and shoes on a small heel. Namely, the present invention relates to improvements in shoes that are performed in order to achieve more comfort and better socks.

Ordinary high-heeled shoes are often uncomfortable to wear, your feet while walking tired and sometimes sick. When wearing shoes with high heels there are many medical problems that are associated with foot, ankle, knee, hip and lower back. However, many women regularly wear high heels because it gives them more stylish, elegant, and meets the requirements of the dress code, makes them more attractive and increases growth.

The discomfort and pain associated with wearing high-heel shoes, arise because the high-heeled shoes significantly alters gait when walking. When wearing shoes with flat heels or barefoot load distribution on the stop is provided so that approximately 5% are part of the fingers 40% - on the part of the foot between the inner and outer beams, 5% on the middle part of the foot and 50% on the part of the heel. Thus, the body weight is distributed relatively evenly between the front and rear parts of the foot.

With increasing heel height distribution of load changes, moving forward, and this increases the load percentage attributable to the part of the foot located between the inner and outer beams. Usually a person standing or walking in high-heel shoes, the heel feels much less load than the front part of the foot. For example, in high-heel shoes, where the heel has a height of two inches or 58 mm, 70% of body weight holder falls on the beam of the foot, and short-term load on this part of the foot can reach up to 250% compared to the pressure experienced by this part of the foot when wearing shoes without a heel. In addition, when the heel height increased, the contact area of the foot, located between the beam part of the foot and the base of the Shoe, decreases and moves forward to the part of the fingers.

A significant percentage of adherents shoes high heel complains of the pain associated with wearing such shoes, which occurs in the interval between thirty minutes and four hours of normal walking, standing and C is placed on the work or on any public event. In many high heels steep slope causes the foot to slide down, bending and squeezing his fingers. In addition, wearing high heels can cause back pain, especially in people with weak abdominal muscles. There is no doubt that high-heeled footwear uncomfortable to stand or walk for a long time.

The author of the present invention was developed and tested a number of preliminary options the shoes are made according to the present invention, which is described in this application, from which it was concluded that the main cause discomfort when wearing shoes is its lack of support for the middle part of the foot and the stress concentration at the front part of the foot, namely, in many shoes with high heel profile does not match the stop carrier Shoe and his foot is not in contact with the ground in the Central parts of the Shoe. For many people, this Shoe gap between the middle area of the foot and the Shoe is so significant that between the foot and the base has a visible lumen. In those cases, when the Shoe is in contact heel and front part of the foot, a significant portion of the foot is not able to communicate with the base Shoe to ensure a must support.

In one experiment, the rst is by the author, were performed comparative measurements when the test was shoes without heels (1), shoes with a heel height of 100 mm (2), but these measurements showed a reduction of the area of contact on 5,64 square inch (about 36,5 cm) or by 36.3% per foot.

In another experiment conducted by the author studied the longitudinal profile of the foot 4 separate entities with the same size feet, relevant American women's size 8.5. While the profile of the foot of each subject was studied in the presence of a heel height of 100 mm Was found that the length of the lumen, which is the length of the lumen (part of the heel to forefoot) gap between the middle part of the foot and the base of the shoes, has averaged about 6 inches (about 153 mm). In this experiment, the data of 6 inches (153 mm) approximately 62% of the length of the shoes, part 9 and 5/8 inches (about 244 mm). In other words, approximately 62% of the foot is in limbo without any support. In the experiment were measured stop subjects to determine the maximum height of the middle part of the foot, under which the author implies the largest number of height from the surface of the insole to the lifting of the foot in its middle part, and as defined, this height is approximately 1/2 inch (12.7 mm) from the Foundation of the footwear at a man with n Malinin arch of the foot and up to 1.5 inches (38.1 mm) in a person with a high arch.

Most modern manufacturers who produce inserts for more comfort when wearing shoes with high heels, I believe that they should be very thin so as not to disturb the shape of the Shoe. In the strip to insoles, pads, elastic elements and liners are often thinner than standard insoles for shoes without a heel, and averaging about 2 to 3 mm for shoes that do not have special design platform. However, shoes with high heel, on the contrary, requires thicker items than shoes with a low heel, so it can be called comfortable to wear. And again, because the shape of the foot does not conform to the surface topography of the instep, with shoes with high heel steep climb, the beam stops seeking for any support to go forward from the intended axis of the rearward beam. The higher the heel height, the farther forward to fingers aims the beam of the foot, creating a significant distance between the presumed location of the rearward beam and the actual location of the rearward beam. The distance between the actual location of the rearward beam and the proposed place of protrusion of the beam indicates the surface area of the Shoe base, which does not fully support the foot.

Previously, there have been several systems to improve the Oia comfort or support function shoes, but today there is no effective system that would make shoes with high heels more comfortable to wear.

In US patent No. 4,631,841 from Hickey serves liner for shoes with high heels. Hickey offers the Shoe liner having a front flatter area to support the forefoot and the middle portion. However, according to Hickey this middle section has a maximum thickness of about 1/4 inch (6 mm).

In US patent No. 5,782,015 from Dananberg proposes a model of high-heel shoes, in which the bearing surface of the heel region has a smaller slope down than your normal Shoe high heel, and the front section of the base of the Shoe has a slightly raised top. However, in this invention a rigidly fixed form and, thus, it cannot adapt to the diversity of the foot, which may depend on the height of the arch of the foot, the location of the vault and distances of the lumen; in this invention may not be considered a change in the shape of the foot during walking.

Carrier made to order orthopedic products for diabetics and patients suffering from rheumatism, were previously developed for shoes with a low heel. These orthopedic products are shaped according to the previously captured standards and with the use of thermoplastic materials to provide maximum support SRT is e and to reduce the load on the bony prominences of the plantar surface of the foot, what otherwise may lead to the formation of ulcers. These orthopedic products usually are made of various semi-rigid material such as a copolymer of ethylene and vinyl acetate or polypropyleneimine to coincide in shape with the foot. Such orthopedic products typically run the entire length, this requirement is usually followed by the depth in the heel area, but in this invention and one or the other measure is unnecessary. In addition, any strip in the beam region of the foot in such orthopedic products is at or behind the line of protrusion of the beams and not in front of this line the protrusion beams, where when wearing high heels occurs the most severe pain, referred to in paragraph 10. In conventional orthopedic products gasket is located or in the heel region, or in the actual location of the beams of the foot, and not in the middle part. Orthopedic products usually have a deeper recess of the heel, and laying in the beam region of the foot does not lift the foot in this Shoe. Although these orthopedic products and used in the past, but they were used only in shoes with a low heel and may not be applicable for mass production, because the materials from which they are made, are not DOS is enough conformal, to match a large variety of shapes of the foot and its provisions when securing should support the foot.

The present invention has significant advantages over these and other products of the prior art.

The invention

Footwear, namely, shoes high heels, contain a reference element with a curved middle part made of a conformal or compression of cushioning material. This cushioning material is of sufficient density to provide a support carrying the load of the arch of the foot. Supporting element for the middle part of the foot is of such size and shape that its height was sufficient to make contact and support in relation to at least some portion of the middle part of the foot. Supporting element for the middle part of the foot is of elastomeric material with a maximum thickness of from 10 to 25 mm, This supporting element for the middle part of the foot includes a base surface and side walls, which are spaced from the inner upper wall of shoes, but can adhere to the upper inner walls of the shoes. In the preferred embodiment, it is also proposed and the reference element for the front part of the foot which is placed on the upper surface of the base Shoe on the front part of the insole.

The present invented the e is particularly applicable to the shoes at the middle and high heels (i.e. with heels higher than 1 inch, (25.4 mm)) to support the middle section of the foot. This system reduces the pressure on the sole and localized stress on the foot.

Description of the drawings

Figure 1 - exploded view in perspective of shoes with high heels (closed back) and the support element for the middle part of the foot according to the present invention.

Figure 2 is a view in perspective of shoes with high heels (closed back) Assembly with a support element for the middle part of the foot according to the present invention.

Figure 3 is a view in perspective of shoes with high heels (open back) Assembly with a support element for the middle part of the foot according to the present invention.

4 is a side view of the support element for the middle part of the foot according to the present invention.

5 is a side view, partially in section, showing the foot in the Shoe with a high heel and a support element for the middle part of the foot according to the present invention, where this supporting element for the middle part of the foot is under compression load.

6 is a perspective view of the first variant embodiment of the support element for the middle part of the foot with the supporting member to the front portion of the foot according to the present invention.

Fig.7 is a perspective view of the second variant embodiment of the support element for the middle part of the foot with the supporting element is La forefoot according to the present invention.

Fig is a perspective view of the third variant embodiment of the support element for the middle part of the foot according to the present invention.

Figa - section of a double-layer support element for the middle part of the foot according to the present invention.

Figw - section of a three-layer support element for the middle part of the foot according to the present invention.

Detailed description of the invention

The present invention provides a compression and/or conformal insole with a support element for the middle part of the foot used in shoes with a medium or high heel that extends from the base of the sole of the shoes to provide support for the middle part of the foot and redistribute the load, which is mainly exposed front part of the foot with the bones of the metatarsus and toes, across the foot. The present invention relates, primarily, to the shoes with high heel and with closed back, such as court shoes, shown in figure 2, however, it is also applicable to the shoes with open heel, such as flip-flops, shown in figure 3, or to other models of shoes.

With regard to Fig. 1-5, Fig. 1-2 and 4-5 shows a Shoe 10; and figure 3 shows the sandal or Shoe without the heel 210. Shoes 10 and 210 are essentially the same design and elements, except those differences that relate to the Shoe upper 12. Tuff is I 10 includes a top 12, with the inner walls 14 and 16. The Shoe 10 has a sole 18, which may include the instep. The Shoe 10 has a sole 20, which has a top surface 22 and bottom surface 24. The insole 20 has a finger section 26, where is the finger portion 112 110 feet, the front section 28, where is the beam or metatarsal portion 114 of the foot 110, the middle portion 30 located at the middle portion 116 of the foot 110 and the heel area 32 corresponding to the heel portion 118 of the foot 110.

The support element 40 for the middle part of the foot is located on the top surface 22 of the insole 20 along the middle section 30 of this insole 20. Posting this support element present invention provides a significant advantage compared with the prior art. In a preferred variant embodiment of the present invention the support element 40 for the middle part of the foot behind the metatarsal heads of the bones belonging to the front part of the foot, and ends in front of the heel area. In other words, a basic element for the middle part of the foot is placed under the middle part 116 of the foot, along the curved instep shoes. While supporting element 40 for the middle part of the foot serves as a support function for the middle part of the foot, and the function of the shock absorber.

As clearly seen in figure 5, the support element 40 to the middle part of the hundred and the s has a convex shape and a size, his height was sufficient to contact at least with a certain section of the middle portion 116 of the foot and to serve him support. The support element 40 for the middle part of the foot has a front edge 60 and trailing edge 62. Most preferably, the support element 40 for the middle part of the foot located on the top surface 22 of the insole so that the front edge 60 of this support element 40 was behind the finger section 26, and the rear edge 62 of this support element 40 has ended before the heel section 32 of the insole 20.

The support element 40 for the middle part of the foot is made of conformal or compression of cushioning material and in the preferred embodiment, has a Central axis, the maximum height h1 (as shown in figure 4), which is greater than the maximum height h2 of the middle part of the foot medium shoes (as seen in figure 5).

The support element 40 for the middle part of the foot has a maximum thickness of at least 5 mm In the preferred embodiment, it has a maximum thickness of at least 8 mm or 10 mm; and in still more preferred embodiment, it has a maximum thickness of at least 12 mm or 14 mm or at least 15 mm or 16 mm; and in the preferred embodiment, it has a maximum thickness of at least 18 mm or 20 mm; or at least 22 m is; or, at least, 24 mm; or at least 25 mm In this preferred range of thickness of the support element 40 for the middle part of the foot maximum ranges from 18 mm to 22 mm heel height 100 mm (95-105 mm). In one variant embodiment of the support element 40 for the middle part of the foot has a maximum thickness of 16 mm to 20 mm while the height of the heel 80-95 mm In another variant embodiment of the support element 40 for the middle part of the foot has a maximum thickness of 14 mm to 18 mm at the height of the heel 65-80 mm, And in yet another variant embodiment of the support element 40 for the middle part of the foot has a maximum thickness of 12 mm to 16 mm when the height of the heel 50-75 mm or it may have a maximum thickness from 10 mm to 14 mm while the height of the heel 40-65 mm

The support element 40 for the middle part of the foot in a preferred embodiment, combined together with base Shoe 20. In this case, the supporting element 40 for the middle part of the foot can be performed either as a single unit with an insole for shoes with high heels, or alternatively it may be a separate element that is attached or in some other way attached to the insole 20; and in that and in other case it will be covered with a lining 43 of the insole, as shown in Fig. 1-8. The General profile of the support element 40 for the middle part of the foot with a covering e what about the lining 43 insole has a taper, to ensure a seamless fit this support element 40 for the middle part of the foot to the shoes.

In one variant embodiment of the profile of the support element 40 for the middle part of the foot is preferably flat at the base, to exactly fit to the surface of the Shoe, and the top of its path coincides with the anatomical shape of the foot. In another embodiment, a supporting element for the middle part of the foot is made in the form of a wedge. In yet another variant embodiment of the support element 40 for the middle part of the foot, is made in the form of a wedge, also beveled along the lateral sides of the front, so there was no scar, which otherwise feels under the upper vamp of the shoes is the reason for the unnatural movement of the foot up. And in yet another variant embodiment of the support element 40 for the middle part of the foot is divided into two or more segments.

Less preferred options embodiments include a support element 40 for the middle part of the foot, which is glued, or otherwise attached on top of the insole lining, or represents a separate Shoe liner. The support element 40 for the middle part of the foot preferably is covered by the material of the insole lining, although in some embodiments the embodiment lining insole may be missing. In shoes, where there is no article is like or existing insole has the flexibility or softness, the support element 40 for the middle part of the foot may be inserted or attached to the upper inner surface of the sole (i.e. to the side of the sole, which does not touch the ground). While supporting element 40 of the middle part of the foot may also be placed between the insole and sole.

The support element 40 for the middle part of the foot in a preferred embodiment has such a contour that its maximum thickness was part of the arch of the foot on the inside. In a preferred variant embodiment of the support element 40 for the middle part of the foot has an inner side edge 50 and the outer side edge 52, while the inner side edge 50 has a greater thickness than the outer side edge 52. In one such alternate embodiment, the thickness of the insole 20 is at least 2 mm, and (in option a) inner side edge 50 of the support element 40 for the middle part of the foot has a thickness of at least 12 mm, and the outer side edge 52 of this support element 40 has a thickness of at least 4 mm; or (b) an inner side edge 50 of the support element 40 for the middle part of the foot has a thickness of at least 16 mm, and the outer side edge 52 of this support element 40 has the thickness of at least 6 mm; or (option c) inner side edge 50 of the support element 40 for the middle part of the foot has a thickness of, by at least 20 mm, and the outer side edge 52 of this support element has a thickness of at least 8 mm, the Contour of the support element 40 for the middle part of the foot provides a rounded fulcrum coinciding with the center of the foot 110, which serves to distribute the load to a stop on the type of movement of the reciprocating tool, because the heavier side of the foot at the heel area is to balance the load beam part of the lower side of the foot. Thus, the load distribution along the foot 110 goes on more evenly. And the heel sits evenly on the increased the heel area which provides support for the foot. The support element 40 for the middle part of the foot is not only shock-absorbing element. Rounded fulcrum available in the anchor element 40 for the middle part of the foot, requires a much greater thickness than products of the prior art, such as orthopedic shoes, to provide and support, which provides a common contact of the foot with the base Shoe, and to serve as a tool to perform the function of load balancing.

The support element 40 for the middle part of the foot has a support platform 42, passing along the Central axis of the support element 40 for the middle part of the foot, and side walls 44 and 46 extending from the support platform 42 to the insole 20. In predpochtiteljno embodiment of the present invention the supporting platform 42 and side walls 44 and 46 of the support element 40 for the middle part of the foot and are spaced from each other within the inner walls 14 and 16 of the Shoe upper 12. In a preferred embodiment, the side wall 44 of the support element 40 for the middle part of the foot located at the inner side of this support element 40, passes from the insole 20 up and away from the inner wall 14 and insole 20 at an acute angle from the vertical. In the preferred embodiment, this lateral wall 44 of the support element 40 for the middle part of the foot located at the inner side of this support element 40 for the middle part of the foot, running from the insole 20 up and away from the inner wall 14 and insole 20 angle up to 45 degrees from the vertical.

While the Shoe upper 12, the outsole 18 or insole 20 have region 56 width, where the width is the maximum width shoes. In most variants of the embodiment of the supporting platform 42 of the support element 40 for the middle part of the foot has a width equal to the width of the section with the maximum width, or narrower. This alternative embodiment is particularly suitable for shoes/indoor shoes without a heel, such as shown in the embodiment of Fig. 3, since the support element 40 for the middle part of the foot will be less noticeable while wearing.

In some embodiments the embodiment of support element 40 for the middle part of the foot has a support platform 42 such width that is greater than the width of the insole 20.

In one pre is respectful variant embodiment of the support element 40 for the middle part of the foot has a lower portion 48, located so as to provide such lateral pressure on the lower part of the inner walls 16 and 18 of the Shoe upper 12, which is sufficient to shift one or both of the top edges 17 and 19 of the inner walls 16 and 18 so that they are closer contact with the foot 110 of the carrier Shoe than in the absence of such bottom portion 48.

In preferred embodiments, embodiments of the present invention supporting element for the middle part of the foot includes a supporting element 58 for the front part of the foot located on the front part 28 of the upper surface of the insole 20. This supporting element 58 to the front part of the foot has a thickness of at least 4 mm and is located on the upper surface of the insole, on the front section 28 of this insole 20.

Supporting element 58A for forefoot can take the whole width of the shoes, as shown in Fig.6. The more material used in this front, the more likely it is that the Shoe pad and the corresponding the top shoes will contribute to the comfortable accommodation of the foot. Therefore, the preferred option is option with more localized placement, shown in Fig.7, where the supporting element 58B for forefoot represents a Central ridge, located in the region of the second and third metatarsus of the foot. While supporting element 58B for the front h the human foot does not allow the vamp to exert pressure on the upper part of the foot during walking and reduces the need to manufacture a large vamp and the corresponding the top shoes. In an alternative embodiment of the supporting element 58A for forefoot may include an open cavity located at least in the field of second and third metatarsus of the foot. In an alternative embodiment in the form of process support element 58B for forefoot may represent an open cavity on the surface of the insole 20, which is surrounded by a thicker shock-absorbing material. In the preferred variant of the embodiment of section 28 of the insole 20, designed for forefoot has a cavity containing the reference element 58B to the forefoot, which is made in the form of a process of conformal or compression of cushioning material, such as polyurethane foam with memory effect. According to this variant embodiment to achieve the smooth upper surface with a high degree of comfort.

Supporting element 58 to the front part of the foot may be completely absent, as shown in Fig. However, it is recommended to use at least some element of cushioning for the forefoot to optimize and maintain the overall performance comfort. Lifting the front part of the foot through the use of shock-absorbing element also contributes to the alignment of the foot within the shoes for the further security Council is lanciavano load balancing in the rear and middle parts of the foot. Localized bearing is a very important element to the front of the foot, because this place is the most adjacent plot of shoes.

The heel area 32 should remain relatively flat and minimally depreciated to ensure proper placement of the heel at the behind of the support element 40 for the middle part of the foot. This system works with or without using the heel area of cushioning material, or using thin material. Usually the users shoes prefer a thickness of from 2 to 4 mm In the case where the cushioning material in the heel area of shoes with high heel is too thick, the foot tends to slide forward. Shoes with a closed heel or shoes without a heel around the perimeter of the Shoe base or at some stage of it can be laid additional material to ensure the best stability and cushioning. The heel area 32 is delimited from the average area of steep or smooth slope.

The function of the support element 40 for the middle part of the foot is that he carries as a static load (when the carrier Shoe stand still)and dynamic impact loading (when the carrier Shoe goes) from the beam portion 114 and the heel portion 118 of the foot 110 of the carrier Shoe to the middle part 116 of this foot 110. This PE is Emesene and load redistribution increases the comfort of the carrier Shoe. When testing preliminary samples of the subjects showed a significant increase in the comfort of these shoes. Sensations reported by the subjects include reliable support, provide soft tubercle of the support element 40 for the middle part of the foot, and created the impression that the test shoes, when it is standing, has a much lower heel than in reality. The reduction of the load beam portion 114 located in the front part of the foot, is because the supporting element 40 for the middle part of the foot functions as a support element for the middle part 116 of the foot 110, and as the turning point, when the support on which the user of this Shoe, occupying different positions of the feet, ankles, legs and body, can redistribute the load falling on different parts of the foot. Thus, the user of the Shoe can move the weight from the load beam part of the foot to the heel part with a stronger pressing on the heel, moving thus the weight load from the beam portion 114 to the heel part 118. However, this redistribution of weight is not fixed, because the user of this footwear is actively and continuously regulates the load distribution on the foot. This user's ability to actively distribute the load on the foot is another property is om of the present invention, which provides user comfort, unavailable in the shoes of previous systems.

It was found that the present invention is so effective in the transfer of loads to the middle portion 116 of the foot 110 that the heel portion 118 of the user in this case does not show the degree of lateral expansion, which is typical for shoes, not having the support element 40 for the middle part of the foot. In other words, in the high-heeled shoes, not having the support element 40 for the middle part of the foot, the heel portion 118 of the foot of the user will be subjected to lateral expansion, because the user their weight presses on the heel, causing raspletanie fabric heel and lateral extension. The use of the support element 40 for the middle part of the foot 40 reduces this undesirable effect. It was found that the supporting element 40 for the middle part of the foot allows the foot of the user enough support, so that lateral movement of the heel is reduced by 2-8 mm in comparison with shoes that do not have such a support element for the middle part of the foot. To shoes, including supporting element 40 for the middle part of the foot, well sitting on the foot, the Shoe upper 12 should have a more narrow in scope heel than the standard footwear of the same size. In one preferred variant embodiment of the Shoe upper 12 has a volume of p is TCI 2-8 mm, than the standard footwear of the same size. In addition, in some embodiments the embodiment of the Shoe sole, insole or uppers can have a smaller length than standard shoes of the same size.

Selection of appropriate materials for the present invention is a difficult choice, since the material must have sufficient strength to withstand the load to which it is subjected, without sagging, and at the same time to provide a soft contact with the foot. The ideal material should be conformal or compression, lightweight, soft to the touch and to withstand high loads. Ideally, this material should also repeat the shape of the foot of the user, and enough to recover quickly, to retain the strength to carry further load during prolonged wear. Such material may also have the property of power-efficiency.

The support element 40 for the middle part of the foot is made of material, which preferably should have sufficient density to withstand the load of the middle and anterior parts of the foot without full compression to avoid sagging of the middle part of the foot, and at the same time it must be sufficiently pliable to ensure the comfort of the carrier Shoe. Preferably, this material had sufficient forming method of the spine, to fit the changing shape of the foot during walking. The support element 40 for the middle part of the foot should prominate under the weight of the carrier footwear to fit the specific shape of the foot of the carrier Shoe at all stages of the step, simultaneously with sufficient strength under such load, to provide adequate support without sagging. Such materials, which could serve this purpose include conventional foams, the foam with memory effect and other slowly recovering foams, a copolymer of ethylene and vinyl acetate, latex, rubber, polyurethane and other viscoelastic materials: silicone, gels, soft granular materials, soft plastics, water and other liquids, air, and fine particles, such as sand, beads and grains contained within a durable and at the same time flexible membranes. Such systems are called dual-purpose systems are designed to provide strong support for the required parts, and depreciation for better comfort. To make the material more pliable during compression, more rigid materials can be made grooves, channels, removed the core and so on (i.e. when the material is removed all the inside), so they were more pliable to the touch. And to make the materials more resistant to compression, in such m is materials like gels, soft pellets or soft composite materials can be introduced with the aim of increasing their strength rigid fibers. A good choice are the materials, which usually retain the shape of the footprint of the user under load for long periods of time, while providing comfort, stress relief, energy return, depreciation shock and/or contact with the ground during standing or walking. The support element 40 for the middle part of the foot is preferably from conformal or compression of cushioning material, which is preferably an elastomeric material such as a viscoelastic material with an open cellular structure, viscoelastic material with a closed cellular structure or necesity viscoelastic material. Such conformal or compression damping material is an unsaturated rubber, a saturated rubber or other elastomer. Unsaturated rubbers may include natural rubber, synthetic polyisoprene, butyl rubber, halogenated butyl rubber, polybutadiene, the best choice rubber, nitrile rubber, NBR hydrocapsule, chloroprene or neoprene rubber. Saturated rubbers may include ethylene-propylene rubbers and ethylene-propylene diene rubber, polyacrylic rubber, silicone rubber, ethylenevinyl the tat and polyurethane.

One suitable for use in the present invention the material is a polyurethane foam with memory effect. Polyurethane foam with memory effect is made from polyurethane with added chemicals that increase its viscosity while increasing its density. It is often referred to as visco-elastic polyurethane foam. Depending on the chemicals used and the total density of the polyurethane foam is more rigid when cool temperatures and softer in the heat. High-density foam with memory effect, reacts to body temperature, which allows this foam to take the form of a warm body within a few minutes. This has the effect of memory foam low density is sensitive to the pressure and takes the form of the body even faster.

For the present invention, the hardness or softness of the material is an important indicator. When the rigidity of the material is determined by the rate of deformation indentation impact (IFD) or indicator strain compression (CFD). While CFD measures the amount of force in pounds required to compress a sample size of 2"x2"x1" (i.e., 50.8 mm x 50.8 mm x 25.4 mm) by 25%. This index compression is commonly known as CFD @ 25%. Preferably, the support element 40 for the middle part of the foot was made of a material having an index of CD from 0.6 psi to 30 psi at 25%compression of the top surface, which is in contact with the feet.

In a preferred variant embodiment of the support element 40 for the middle part of the foot is made of a polyurethane or polyurethane.

Ideally it would be good to have a single material, which by its characteristics would be quite suitable to serve as a shock absorber, and at the same time would be durable enough to withstand respectiveiy and not to create a feeling of stiffness during impact. However, most materials are either soft with poor performance compression under heavy loads or hard enough, to be able to withstand high loads, but rough in contact with the plantar surface of the foot. In other words, the better the material resists compression, so it is tougher. With such restrictions, the support element 40 for the middle part of the foot 40 in a preferred variant embodiment has layers of different materials, where each layer plays a role. In a preferred embodiment, the upper, thicker layer is a contact layer, which provides the owner a feeling of comfort and softness, while below a thinner layer is a reference layer, which provides long-term support and prevents sagging.

While the location of the anchor layer may be limited t is like the front area of the insole, the area where the pressure in the high-heeled shoes is the greatest. Or this support layer can occupy a greater area of the insole, until the entire surface of the insole. In one variant embodiment of the insole support layer has the largest thickness of about 6 mm in the beam portion of the foot and thins to the heel of the Shoe, while the heel part of the shock-absorbing support layer 2 mm. This layer thins to zero in the anterior segment of the insole and on the sides to stretch the bones of the metatarsus, where most Shoe fits snugly to the foot to provide maximum foot comfort in this part, at the same time minimizing the feeling of compression. In another variant embodiment, the number of support layers is more than one, for example, one reference site in the heel region, and the second in the anterior region. While both can be made of the same material or from different material of the same or different density. Or one support layer may lie under a different reference layer. As usual the maximum thickness of the insole U.S. women's Shoe size 8 is about 3/4" (19,05 mm), you can use several layers of material, where each has its own distinctive properties, and each brings their favor. One layer can provide a feeling of softness when you contact another advance is the duty to regulate adaptation insole for anatomical topography of the foot holder, the third provides energy return, the fourth can provide a rigid support, the fifth more rigid support and so on. As another example, consider the case where the use of hard materials is limited to the anterior region, while the shell with soft gel can be in the middle, and in the forward region of the insole. This composition may vary in length, width, height, or length and width, or length and height, or width and height, or length, width and height.

In variants of the embodiment shown in figa and 9B, the support element 40 for the middle part of the foot contains at least two layers of materials of different densities and in the preferred embodiment, includes upper conformal or compression damping material and the lower material possessing properties of recoil energy. For example, on figa the upper layer 70 is a conformal layer that is in contact with the feet, the middle layer 72 has a higher density, to ensure energy efficiency. On figv the upper layer 70 is a conformal layer that is in contact with the feet, the middle layer 72 has a higher density, to ensure energy efficiency, and the bottom layer 74, which has the largest density to prevent sagging of the foot.

In the variants with layers or megacomp sicyonia versions of some products, related to the present invention, can be placed in another layer of the shoes than the other part. For example, a more rigid support layer may be placed under the insole, while the softer, the conformal layer may be on top of this insole. Quite assume also the option of including a more rigid support layers in the composition soles.

A preferred variant of the embodiment shown in figure 1 and 9A, is a two-layer insole and a supporting element 40 for the middle part of the foot. Thus the top layer follows the contour of the foot made of polyurethane with a memory effect, it covers the entire heel region and has a thickness in this area is approximately 2 mm, it covers the entire Central region having a maximum thickness of 20 mm on the inner side and 8 mm on the outer side, and only some spot in the front area, exactly at the second and third metatarsus, there has a thickness of 4 mm, While the lower layer is made of a conventional polyurethane foam having the properties of the recoil energy, which starts from the place of the alleged rearward beams and covers the entire front region. This bottom layer has the largest thickness in the beam region of the foot, making only 5-6 mm, and thins along the sides of the finger in parts to ensure proper fit of the Shoe to the foot. This option is especially izraboten for closed shoes-boats.

The plot of the foot in contact with the base of the shoes directly correlated relative to the pressure distribution on the foot. In the test conducted in connection with the present invention, where compared the performance of conventional shoes without a heel with ordinary shoes with a heel height of 100 mm and with the shoes, made in accordance with the present invention and having a heel height of 100 mm and a supporting element for the middle part of the foot, it was found that the contact area of the foot in shoes with a heel height of 100 mm and a support element for the middle part of the foot, performed in accordance with the present invention, is 93-105% of the contact area of the foot the Shoe without a heel and the contact area of the foot in normal shoes with a heel height of 100 mm is 65-80% of the contact area of the foot shoes without a heel. Thus, the peak load in shoes with a heel 100 mm and a supporting element for the middle part of the foot, reduce by two-thirds in the beam portion of the foot compared with ordinary shoes with a heel height of 100 mm

The present invention is applicable to people of different weights and sizes of the foot, as well as for different styles of shoes. The increase in surface area that is in contact with the foot, is a highly effective measure in the distribution of the load on the bones of the metatarsus and provides unloading. Increase contact the th surface, carried out by proper choice of shape and material benefits in the form of the effect of individual adjustment of the shoes, provides optimized stability and heel support part, the support of the foot arch support beam part of the foot performs a damping function and the energy function returns.

The support element 40 for the middle part of the foot is usually located at the same level or even higher than the heel section 32 of the shoes, and so it raises and supports the middle portion 116 of the foot so that the foot was enough flatness aligned to transfer attributable to her load. In addition to providing functions support the load in the middle section 116 of the foot supporting element 40 for the middle part of the foot moves the weight back to the heel part 118.

The present invention allows various options associated with the style preferences of the fashion designers of shoes, it may be divided into sections, technologically optimized, and some components can be exaggerated. Such changes usually mean the desire to meet the latest style trends, while the essence of the invention remains unchanged. In some cases, the designer shoes can have the intention to neglect some of the characteristics of the present invention for shortcuts is the supply of a certain style, what otherwise may be impossible. This may mean that only a portion of the optimal area raised, while the essence of the invention remains the same. For example, in such shoes as Slippers with no heel or sandal height cross-section of the middle section can be reduced.

The present invention is complex in relation to the location of the heel area (location in the proper place to prevent slippage), providing support for the middle part of the foot, cushioning the front, a balanced distribution of pressure and/or alignment of the foot in the Shoe; at the same time, the present invention is easy from the point of view of design and looks simple. Although the present invention is devoted primarily to the problem of high heels, it is also applicable for shoes without heels (men, women and children). Shoes without a heel has a flat structure, and the load it is usually distributed on the heel, and on the beam of the foot. However, this stop is exposed to fatigue during long periods of standing or walking. Being clad in shoes without a heel, a person begins to feel pain, first in the heel part, and then in the beam part. To mitigate this pain the present invention may be further modified to provide additional Amort is tion and support the heel part in addition to the already well-off measures stabilize the heel region, the arch support of the foot and amortization front.

1. The subject of footwear (10)containing a finger of land (26) to accommodate the finger portion of the foot of the user, the front section (28) to accommodate the metatarsal portion of the foot of the user, the middle portion (30), corresponds to the location of the middle part of the foot of the user, and the heel section (32), corresponds to the location of the heel part of the foot of the user, characterized in that it includes a support element (40) for the middle part of the foot, made of conformal or compression of cushioning material having an index of deformation (CFD) 0.6 pound per square inch (psi) up to 30 pounds per square inch (psi) at 25%compression, while supporting element (40) for the middle part of the foot is located in the middle part (30) of the Shoe and has a convex shape and contour and height (h1), sufficient to ensure contact and support the middle section of the foot of a user to provide rounded support carrying the load beam portion of the foot of the user to its middle and heel parts.

2. The item of footwear according to claim 1, characterized in that it additionally contains one or more elements of the Shoe uppers, soles or insoles with section (56) maximum width with the width, which is the maximum width of a piece of footwear, and at the same time supporting element (40) for environments is she part of the foot has a support platform (42), passing along the Central axis of the support element for the middle part of the foot and the supporting platform has a width less than the width of the section with the maximum width and along the Central axis, it has a maximum height that is greater than the height of [h2) the middle part of the foot of the user.

3. The item of footwear according to claim 2, characterized in that the supporting platform (42) has side walls (44, 46)extending from the support platform (42) to the insole (20), and the supporting platform (42)and side walls (44, 46) of the support element (40) for the middle part of the foot located within the inner walls (14, 16) of the Shoe upper (12) and at least part of the distance from the inner.

4. The item of footwear according to claim 3, characterized in that the supporting element (40) for the middle part of the foot has a plot (48)located so as to exert lateral pressure on the part of the inner walls (16, 18) of the Shoe upper is sufficient to bias the upper edges (17, 19) of the internal walls (16, 18) in a close fit to the foot of the user.

5. The item of footwear according to any one of claims 1 to 3, characterized in that the supporting element (40) for the middle part of the foot has an inner side edge (50) and the outer side edge (52), and the thickness of the inner side edges is greater than the thickness of the outer side edges.

6. The item of footwear according to claim 5, characterized in that the supporting element (40) for the middle part of the foot which meet the maximum thickness 10-22 mm

7. The item of footwear according to claim 5, characterized in that it further includes a support element (58) for the front part of the foot located on the front part (28) of the Shoe and having a thickness of at least 4 mm

8. The item of footwear according to claim 5, characterized in that
(a) inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 12 mm, and the outer side edge (52) of the support element for the middle part of the foot has a thickness of at least 4 mm; or
(b) an inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 16 mm, and the outer side edge (52) of the support element for the middle part of the foot has a thickness of at least 6 mm; or
(C) an inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 20 mm, and the outer side edge (52) of the support element for the middle part of the foot has a thickness of at least 8 mm

9. The item of footwear of claim 8, characterized in that the supporting element (40) for the middle part of the foot has a maximum thickness of 18 to 22 mm heel height 95-105 mm; the maximum thickness of 16-20 mm heel height 80-95 mm; the maximum thickness of 14 to 18 mm for the height of the heel 65-80 mm; the maximum thickness of 12-16 mm for the height of the heel 50-75 mm; or the maximum thickness of 10-14 mm for the height of the heel 40-65 mm

10. The item of footwear according to claim 9, ex is different, however, that the support element (40) for the middle part of the foot contains at least two layers of materials (70, 72), including the top layer of conformal or compression of cushioning material and the bottom layer of material having the properties of energy output.

11. The item of footwear of claim 10, wherein the bottom layer has a compressive deformation (CFD) 6 psi or more at 25%compression.

12. The item of footwear according to any one of claims 1 to 4, characterized in that the supporting element (40) for the middle part of the foot has a maximum thickness of 10-22 mm

13. The item of footwear according to any one of claims 1 to 4, characterized in that the supporting element (40) for the middle part of the foot has a maximum thickness of 10 to 22 mm heel height 95-105 mm; the maximum thickness of 16-20 mm heel height 80-95 mm; the maximum thickness of 14 to 18 mm for the height of the heel 65-80 mm; the maximum thickness of 12-16 mm for the height of the heel 50-75 mm; or the maximum thickness of 10-14 mm for the height of the heel 40-65 mm

14. The item of footwear according to any one of claims 1 to 4, characterized in that the conformal or compression damping material is a viscoelastic material with an open cellular structure, viscoelastic material with a closed cellular structure or neatzistam viscoelastic material.

15. The item of footwear according to any one of claims 1 to 4, characterized in that the supporting element (40) for the middle part of the foot contains at least two layers of materials (70, 72), including the top layer of conformal or compression of cushioning material and the bottom layer of material having the properties of energy output.

16. The item of footwear according to item 15, wherein the bottom layer has a compressive deformation (CFD) 6 psi or more at 25%compression.

17. The item of footwear according to any one of claims 1 to 4, characterized in that it further includes a support element (58) for the front part of the foot located on the front part (28) of the Shoe and having a thickness of at least 4 mm

18. The item of footwear according to any one of claims 1 to 4, characterized in that it is the sole high-heeled shoes, and a section (30) for the middle part of the foot is at an angle relative to the surface for walking.

19. The liner for the subject of high-heeled shoes with section (30) for the middle part of the foot located at an angle relative to the surface for walking, characterized in that it contains a support element (40) for the middle part of the foot, made of conformal or compression of cushioning material having an index of deformation (CFD) 6-30 psi at 25%compression, located in the middle part (30) of the subject of shoes and having a convex shape, contour and height (h1), sufficient to ensure contact and support the middle part of the foot of the user to provide a rounded support of transferring the load from puck the front part of the foot of the user to the middle and the heel part, while specified supporting element (40) for the middle part of the foot has an inner side edge (50) and the outer side edge (52)and the inner side edge has a greater thickness than the outer side edge, with specified supporting element (40) for the middle part of the foot has a maximum thickness of 10-22 mm; and
(a) inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 12 mm, and the outer side edge (52) of the support element has a thickness of at least 4 mm; or
(b) an inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 16 mm, and the outer side edge (52) of the support element has a thickness of at least 6 mm; or (C) an inner side edge (50) of the support element for the middle part of the foot has a thickness of at least 20 mm, and the outer side edge (52) of the support element for the middle part of the foot has a thickness of at least 8 mm



 

Same patents:

FIELD: shoe industry.

SUBSTANCE: inner sole has basic sole cocomprising double-layer resilient foamed material layer. Smooth covering layer is applied onto upper surface of double-layer resilient foamed material. While double-layer resilient foamed material has Shore hardness preferably between 10 deg and 20 deg, said covering layer creates vignetted inner sole having Shore hardness between 30 deg and 40 deg. Double-layer resilient foamed material may be layer of latex and/or polyurethane foam. Inner sole with said pairs of materials provides for effective massaging or acupressure action and may be made for purposeful action upon individual organs or body parts without causing excessive irritation.

EFFECT: wider operational capabilities and simplified structure of inner sole.

13 cl, 11 dwg

FIELD: shoe industry, in particular, middle layer for shoe sole.

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11 cl, 7 dwg

FIELD: shoe industry, in particular, middle layer for shoe sole.

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11 cl, 7 dwg

FIELD: shoe industry.

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13 cl, 11 dwg

FIELD: personal use articles.

SUBSTANCE: shoe (10), namely, a high-heeled shoe, comprising a convex bearing element (40) for the middle part of the foot, made of a conformal or compression cushioning material having a compressive factor of deformation (CFD) from 0.6 pounds per square inch (psi) to 30 pounds per square inch (psi) at 25% compression, and which has such size and shape that its height (h1) is sufficient to ensure contact and support, for at least some area of the middle part (116) of user's foot (110). The bearing element (40) for the middle part of the foot is made of an elastomeric material with a maximum thickness of 10 mm and 22 mm, and includes a support platform (42) and sidewalls (44 and 46). In a preferred version, the subject of footwear additionally comprises a supporting element (58) for the forefoot, which is located on the upper surface of the insole (20), on the front section (28) of this insole (20). Also an insert is proposed for a shoe with a high heel, which supporting element (40) for the middle part of the foot is made of the above material.

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19 cl, 10 dwg

FIELD: personal use articles.

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EFFECT: design improvement.

7 cl, 9 dwg

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