HIGH HEELED SHOES SUPPORTING NATURAL GAIT
The present invention relates to a high heeled shoe 1 having a forefoot section 5, an arch section 7 and a heel section 6, the high heeled shoe 1 comprising a constructive sole 2, a heel 8, directly or indirectly attached to a lower surface 3 of the heel section 6 of the constructive sole 2; an upper part 9, attached to the constructive sole 2 such that the upper part 9 and the constructive sole 2 together form an enclosure configured to receive and hold a foot in a specific configuration and an insole 10 comprising auxetic material.
The present invention relates to high heeled shoes, more particularly to high heeled shoes with increased comfort and support compared to conventional high heeled shoes. Furthermore, the high heeled shoes of the present invention support natural gait and increase balance. The effects are obtained by the specific configuration and use of materials in the high heeled shoes of the present invention.
BACKGROUND OF THE INVENTIONWearing of high heeled shoes in modern society is associated with fashion and professionalism. From tiny kitten heels and sky-high stilettos to pumps and sling backs, high heels are one of the staples of any woman's wardrobe. However, the wearing of high heeled shoes has many negative effects on the wearer, especially when worn periodically over many years.
Most of the problems arising from wearing high heeled shoes are caused by the shift of pressure from the heel to the forefoot, especially the increased pressure on the toes and metarsasal bones. Furthermore, high heeled shoes often have small and/or triangular toe-boxes that squeeze the toes together and prevent them from performing their natural function. When the big toe is abducted away from the second toe, it is at a strong mechanical position. However, long-term use of high heels can cause the big toes to become misaligned, termed hallux valgus. Without a correctly functioning big toe, the center of gravity is displaced and the static balance is compromised resulting in the body automatically compensating for balancing and damping shocks. Furthermore, if the big toes are misaligned, the foot can shift the direction of bodyweight from the sagittal plane onto the frontal or transverse plane, leading to a host of injuries.
Even though it is well known that high heels may cause permanent foot problems, that does not stop women from wearing them. Over time, cartilage and tissues around the joints at the hips, knees and big toes will be destroyed, also called osteoarthritis. When the big toe is destroyed (also called bunions), women experience difficulty walking and once the injury has occurred, one foot injury comes after the other. Other symptoms include hammertoe, flat feet, ingrown nails, shortened calf muscles, Morton's Neurom and Metatarsalgia.
As society constrains often necessitate the wearing of high heels, a high heeled shoe with increased comfort and support would be advantageous. Furthermore, a high heeled shoe with decreased negative effects would be advantageous.
OBJECT OF THE INVENTIONAn object of the present invention is to provide an alternative to the prior art.
In particular, it may be seen as a further object of the present invention to provide a high heeled shoe that wholly or partly overcomes the above disadvantages and drawbacks of the prior art.
SUMMARY OF THE INVENTIONThus, the above-described object and several other objects are intended to be obtained in a first aspect of the invention by providing a high heeled shoe comprising a constructive sole, a heel, an upper part, and an insole, wherein the insole comprises auxetic material.
The auxetic material of the insole should be designed to have a negative Poisson's ratio. The auxetic material of the insole is thus configured such that when pressure is applied on the auxetic areas of the insole, it does not thin, but becomes thicker or at least keep the same thickness in that area. In other words, auxetics are structures or materials that have a negative Poisson's ratio so that when stretched, they become thicker perpendicular to the applied force. This behavior is due to their particular internal structure and the way this deforms when the sample is uniaxially loaded. Auxetics can be single molecules, crystals, or a particular structure of macroscopic matter. The auxetic structure may e.g. be obtained by a special cutting pattern, referred to as “auxetic cutting” in the following, providing the properties resulting from the negative Poisson's ratio.
The high heeled shoe of the present invention is defined by a forefoot section, a heel section and an arch section between the forefoot section and the heel section. Furthermore, the forefoot section comprises a toe-section. The constructive sole, the upper part, the insole and the outsole are each defined by such sections as well. Each of these elements has an upper surface and a lower surface. The upper surface is the surface which is configured to turn upwardly when the shoe is placed in a natural position (ready for walking) on a horizontal floor and the lower surface is opposite the upper surface.
The constructive sole is the backbone of the high heeled shoe. An upper surface of the constructive sole is configured to be in indirect contact, through the insole, with the surface beneath the feet of a user.
The shape of the constructive sole depends on the desired design of the shoe, but as the purpose of a high heeled shoe, as the name imply, is to elevate the heel of a foot, the constructive sole has a forefoot section configured to be indirectly in contact with the ground in use and to support the forefoot of a user and a heel section elevated to a desired level above the ground configured to support the heel of a foot of a user. More particularly, a lower surface of a forefoot section of the constructive sole is configured to be indirectly in contact with the ground in use. Furthermore, an upper surface of the forefoot section is configured to support a forefoot of a user. An upper surface of the heel section of the constructive sole is configured to support a heel of a user and is configured to be elevated from the ground in use. Furthermore, the constructive sole have an arch section connecting the forefoot section and the elevated heel section.
Normally, the constructive sole is made from a hard and/or stiff and/or non-elastic material such as cardboard or wood or the like, sufficient to withstand the pressure applied to it when in use. The constructive sole preferably also comprise a shank, such as a metal shank at the upper surface of the constructive sole. The shank may be a part of the supportive structure.
In some embodiments, the constructive sole is cut at least once in a substantially longitudinal direction at the forefoot section, wherein the at least one cut is configured to allow the constructive sole to spread around the cut when pressure is applied on the forefoot section. Alternatively or in combination therewith, the constructive sole may be provided with auxetic cutting to ensure the possibility to spread out in response to the applied pressure.
//Upper Part//A high heeled shoe according to the present invention may be closed, open in the toe section or have several upper parts covering only small areas of a foot, such as a high heeled sandal. Thus, the upper part of the high heeled shoe may be one piece or several pieces together forming the upper part.
The upper part is attached to the constructive sole such that the upper part and the constructive sole together form an enclosure configured to receive and hold a foot in a specific configuration.
//Heel//The heel is directly or indirectly attached to a lower surface of the heel section of the constructive sole. In some embodiments, the high heeled shoe of the present invention comprises an outsole and the heel is attached to the heel section of the outsole.
Many shoes have a heel height between 0.5-2 cm. Herein, high heeled shoes are defined as shoes with a heel of at least 3 cm.
The height, thickness and form of the heel may vary among designs.
//Insole//The insole is provided on top of the constructive sole, to provide a softer contact area between the high heeled shoe and the foot. In some embodiments of the present invention, the insole is arranged on an upper surface of the constructive sole and configured to be directly or indirectly (through a sock of a user) in contact with a foot of a user.
In some embodiments, the insole is an integrated part of the high heeled shoe and can not be removed. In other embodiments, the insole can be taken out of the high heeled shoe and replaced with another insole. The insole may cover the whole constructive sole or only be arranged at specific areas in need of extra support or cushioning.
In some embodiments of the present invention, the insole comprises several layers, including at least a first layer and a second layer.
In some embodiments of the present invention, the first layer of the insole is configured to cover the whole upper surface of the constructive sole.
In some embodiments of the present invention, the first layer of the insole only comprises auxetic material at one or more specific auxetic areas and the remaining of the first layer comprises or consists of another suitable material, such as Poron®. Poron® is a microcellular urethane foam with extremely low compression set.
In some embodiments of the present invention, the second layer of the insole is arranged on top of the first layer and is made from a material, such as leather, having a thickness of less than 0.2 cm, such as 0.1 cm. The second layer is configured to be in contact with a user's foot.
In some embodiments of the present invention, the one or more specific areas comprising auxetic material include:
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- a first auxetic area arranged at an upper surface of the forefoot section of the constructive sole such that it is configured to support an area between metatarsal bones and phalanges of a foot; and/or
- a second auxetic area arranged at an upper surface of the arch section of the constructive sole such that it is configured to support the metatarsal pad of the foot; and/or
- a third auxetic area arranged at an upper surface of the heel section of the constructive sole, having a circular or elliptical shape and configured to support a heel of a user.
These areas are where most pressure will be applied when the high heeled shoe of the present invention is in use. A high heeled shoe having an insole comprising auxetic material in the auxetic areas is advantageous, as it provides both comfort and support to a user. Due to the specific properties of auxetic material, the insole provides cushioning but does not thin when pressure is applied to it.
Preferably, the third auxetic area has a smallest diameter between 3-5 cm and a largest diameter between 4-7 cm. The auxetic area may e.g. be circular or elliptic.
In some embodiments of the present invention, the insole have a thickness of between 0.3 cm and 1 cm and comprise pillow-like areas protruding from the first layer of the insole.
In some embodiments of the present invention, the pillow-like areas comprise a first pillow-like area arranged on the upper surface of the forefoot section of the first layer of the insole, shaped such that it is configured to support an area between metatarsal bones and phalanges of a foot.
Since a lot of force is placed on the forefoot, especially in the area between the metatarsal bones and the phalanges, when people are walking in high heels, the first pillow-like area of the insole is arranged in the forefoot section, such that this area is supported by the first pillow-like area when weight is placed on the forefoot.
In some embodiments of the present invention, the first auxetic area comprises the first pillow-like area. Due to the properties of auxetic material, the second auxetic area “absorb”, i.e. take-up, the force applied to it without thinning/sinking like other materials, thus keeping the supporting effect.
In some embodiments of the present invention, the pillow-like areas comprise a second pillow-like area arranged on the upper surface of the arch section of the insole, shaped such that it is configured to support the metatarsal pad of the foot and lift it slightly in that area, such that the weight of a user is directed from the forefoot section towards the heel section.
The second pillow-like area is configured to redistribute some of the pressure from the forefoot/middle section to the heel section. The second pillow-like area is preferably arranged to support the lower part of the arch, such as the metartasal pad.
In some embodiments, the second auxetic area comprises the second pillow-like area. In such embodiments, due to the properties of auxetic material, the second pillow-like area “absorb” the force applied to it without thinning/sinking like other materials, thus keeping the supporting effect. As the second pillow-like area is configured to direct the weight of a user from the forefoot section towards the heel section of the high heeled shoe, it is particularly advantageous that this area comprises auxetic material.
Preferably, the maximum height of each pillow-like area from the upper surface of the insole is at most 1.0 cm, such as 0.5 cm, such as 0.3 cm.
Preferably, the second layer of the insole is fitted over the first layer, when the first layer has been formed as desired, with protrusions, indentations etc. Preferably, the second layer covers the whole of the first layer, including areas comprising auxetic material as well as areas comprising other material.
In some embodiments, the first and/or second auxetic area extend through the whole thickness of the first layer of the insole and further protrude from the first layer of the insole as the first and second pillow-like areas. In other embodiments, the first and/or second auxetic area are arranged in a first layer and covered by the other material being part of the first layer, wherein this other material also form the first and second pillow-like areas.
In some embodiments of the present invention, the first auxetic area and the second auxetic area are joined by a joining auxetic area to form a joined area comprising auxetic material. In other embodiments, the first auxetic area, the second auxetic area and the third auxetic area are joined by two joining auxetic areas to form a joined area comprising auxetic material.
Normally, the toes spread when the body weight of a user is shifted from the heels to the forefoot. However, as most high heeled shoes contain small toe-boxes, the toes are not allowed to spread but are squeezed together in an unnatural configuration. A result is that balance is compromised for the user.
In preferred embodiments of the present invention, the insole further comprises auxetic cutting in a toe-section of the forefoot section. Preferably, the auxetic cutting extends through all layers of the insole and is configured to allow the toe-section of the insole to extend in at least one direction, such as two directions, when pressure is applied on the forefoot section.
This configuration is advantageous, as the auxetic cutting allows the toes to spread when body weight is shifted to the forefoot and force is applied to the toe-section of the insole comprising auxetic cutting. Thus, a high heeled shoe of the present invention has an increased flexibility in the toe-section compared to other high heeled shoes.
Preferably, the auxetic cutting is configured such that the insole can expand at least 0.2 cm or more, such as 0.5 cm or more, but not more than 1.5 cm, preferably not more than 1 cm.
Importantly, the auxetic material of the insole should not be present in the toe section of the forefoot section where the auxetic cutting is arranged, as this would oppose the technical effect of the auxetic cutting, namely spreading of the material when pressure is applied in the toe section.
//Indentation in Heel Section of Insole//In some embodiments of the present invention, the heel section of the insole has an indentation with a circular or elliptical cross-section. In some embodiments, the indentation has a maximum depth of 0.2-0.8 cm, a smallest diameter between 3-5 cm, and a largest diameter between 4-7 cm.
The indentation is configured to lower the heel of a user into a more natural position. Furthermore, the indentation has a supporting effect, as it is configured to support the ball of the heel and spread the force in that area.
//Outsole//In some embodiments of the present invention, the high heeled shoe further comprises an outsole arranged on the lower surface of the constructive sole, covering it either partly or fully, and wherein a forefoot section of the outsole comprises auxetic cutting 30 identical to the auxetic cutting in the insole, and being configured to allow the forefoot section of the outsole to extend in at least one direction, such as two directions, when pressure is applied on the forefoot section.
The outsole preferably has a thickness of between 2 mm-5 mm, such as 3 mm. The outsole may be made from material such as thermoplastic elastomers/rubbers (TPR), thermoplastic polyurethane (TPU), ethylene-vinyl acetate (EVA), also known as poly (ethylene-vinyl acetate) (PEVA).
Importantly, the auxetic cutting should be arranged such that it is similar or identical between the insole and the outsole, such that they both expand to the same extent. Further information about the auxetic cutting is given below.
In some embodiments, the outsole is only arranged at the forefoot section of the constructive sole and comprises auxetic cutting at the forefoot section in a specific area configured to allow the area of the outsole to extend in at least one direction, such as in two directions, when pressure is applied on the forefoot section.
In some embodiments, the auxetic cutting extends through the whole thickness of the outsole. However, in some embodiments, the auxetic cutting does not extend through the whole thickness of the outsole, but only 1-4 mm, such that 1 mm or 0.5 mm closest to the upper surface of the outsole does not have auxetic cutting. In this way, the outsole is waterproof.
//Plateau//In some embodiments of the present invention, the high heeled shoe further comprises a plateau arranged at a lower surface of the outsole at the forefoot section, the plateau comprising auxetic cutting going through both the plateau as well as the outsole.
//Shape//A high heeled shoe according to the present invention is preferably a closed, pointed high heeled shoe.
The forefoot section of the constructive sole together with the upper part of the high heeled shoe attached to the forefoot section together define a toe-box, wherein the high heeled shoe has a pointed toe box with a specific shape configured for allowing the toes to spread when pressure is placed on the forefoot.
In some embodiments of the present invention, a longitudinal axis extends through the high heeled shoe, such that the heel section and the arch section of the high heeled shoe is divided into two substantially symmetrical parts by the longitudinal axis, wherein at least part of a first outer edge of the toe-section of the constructive sole/insole/outsole extends in a direction which is parallel to or extends away from the longitudinal axis and at least part of a second outer edge of the toe-section of the constructive sole/insole/outsole extends towards the longitudinal axis and across the longitudinal axis to meet with the first outer edge to form a pointed tip, wherein the first outer edge is the outer edge configured to be closest to the big toe.
In some embodiments, the first outer edge is substantially straight in at least ⅔ of the length of the first outer edge of the forefoot section closest to the pointed tip
The shape of the high heeled shoe of the present invention is advantageous, as it does not force the big toe towards the other toes like most existing pointed high heeled shoes do. Furthermore, the shape allows the toes to spread when weight is directed onto the forefoot and the toes. This is important for the balance of the user and does not damage the toes to the same extent as normal pointed high heeled shoes.
Definitions Auxetic MaterialThe term “auxetic material” as used herein generally refers to a material or structure that has a negative Poisson's ratio.
Auxetic material exhibits an unexpected behavior when subjected to mechanical stress and/or strains. An insole of the present invention comprises auxetic material configured such that when pressure is applied to the area comprising auxetic material, instead of thinning, it becomes thicker or at least keeps the same thickness in the axis where pressure is applied.
The auxetic material of the insole is preferably auxetic foam. The auxetic material may be made from different materials, such as polymer materials exhibiting sufficient flexibility and elastomeric properties. The auxetic properties can be induced in a particular material by means of altering its internal (micro)structure and making it properly cooperate with the way the material deforms when loaded. This is done by means of modifying and geometrically fine-tuning it. The skilled person would be able to make auxetic material with the required properties, namely that it does not thin significantly when pressure is applied.
Auxetic cutting herein refers to a specific cutting pattern in an element, which allows the element to expand in size when pressure is applied to the auxetic cutting area. Thus, the high heeled shoe of the present invention has an increased flexibility in the toe-section compared to other high heeled shoes. This is done by means of modifying and geometrically fine-tuning it. The skilled person would be able to make auxetic cutting with the required properties, namely that the area comprising auxetic cutting expand when pressure is applied to it.
Sections of the High Heeled ShoeThe high heeled shoe of the present invention is defined by sections to describe where and how the different elements are arranged relative to each other.
The sections are defined by vertical planes dividing the shoe into at least three sections: the forefoot section, the arch section and the heel section.
Thus, the constructive sole, insole, outsole and upper part each comprises a forefoot section, an arch section and a heel section. The sections of the high heeled shoe are herein defined relative to the constructive sole.
The forefoot section of the constructive sole of the present invention is the section which is configured to be indirectly in contact with the ground in use, separated from the ground by the outsole and optionally also a plateau.
The heel section is the section of the high heeled shoe configured to support the heel. The size of the heel section varies with the size of the shoe, but is herein defined as at least 5 cm of the constructive sole, measured along the longitudinal axis, from an outer edge of the constructive sole, which is configured to be elevated from the ground in use.
The arch section is defined as the area between the forefoot section and heel section.
The toe-section is part of the forefoot section and may cover most of the forefoot section. However, preferably the toe-section is at least 2 cm away from the arch section.
Directly Vs. Indirectly
By “indirect contact” is meant, that the contact area may be separated by another layer or sole, such as an insole, a protective layer, an outsole, etc.
“Directly in contact” means directly in contact with the foot of a user or at least a sock on a foot of a user.
The different embodiments of the present invention may each be combined with any of the embodiments. These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
The high heeled shoe according to the present invention will now be described in more detail with regard to the accompanying figures. The figures show one way of implementing the present invention and is not to be construed as being limiting to other possible embodiments falling within the scope of the attached claim set.
Reference is made to
As illustrated in
The high heeled shoe 1 of
The constructive sole 2 is the backbone of the high heeled shoe, determining the height and ground shape of a the final shoe. As shown in
The upper part 9 is attached to the constructive sole 2 such that the upper part 9 and the constructive sole 2 together form an enclosure configured to receive and hold a foot in a specific configuration. Preferably, the high heeled shoe 1 of the present invention is closed with a pointed tip, as illustrated in
A heel 8 of the high heeled shoe 1 is attached to a lower surface of the heel section 6 of an outsole 17 provided on the lower surface of the constructive sole 2.
Importantly, the high heeled shoe 1 of the present invention comprises an insole 10 comprising auxetic material. The insole 10 is configured to be arranged on an upper surface of the constructive sole 2.
Reference is made to
The insoles 10 illustrated in
In some embodiments, as illustrated in
A first auxetic area 11 is arranged at an upper surface of the forefoot section 5 of the constructive sole 2 and is configured to support an area between metatarsal bones and phalanges of a foot.
A second auxetic area 12 is arranged at an upper surface of the arch section 7 of the constructive sole 2 and is configured to support the metatarsal pad of a foot.
A third auxetic area 13 is arranged at an upper surface of the heel section 6 of the constructive sole 2. The third auxetic area preferably has a circular or elliptical shape and is configured to support a heel of a user.
In other embodiments, as illustrated in
The insole 10 illustrated in
In some embodiments, as illustrated in
In some embodiments, as illustrated in
The insoles 10 shown in
Furthermore, the heel section 6 of the insole 10 has an indentation 21 with a circular or elliptical cross-section.
Reference is made to
The outsole 17 is configured to be arranged on the lower surface 3 of the constructive sole 2, covering it fully. The forefoot section 5 of the outsole 17 comprises auxetic cutting 18. Importantly, such auxetic cutting should be identical or at least close to identical to the auxetic cutting 18 in the insole 10 of the high heeled shoe 1. The auxetic cutting 18 in the outsole 17 allows the toe-section 19 of the outsole 17 to extend in at least one direction, such as in two directions, when pressure is applied on the toe-section 19. How many, and which directions it can extend in, depends on the auxetic cutting pattern.
Most high heeled shoes have a pointed or at least rounded forefoot section to make the shoe look smaller and give it a feminine look. Reference is made to
A longitudinal axis 20 extends through the high heeled shoe 1, such that the heel section 6 and the arch section 7 of the high heeled shoe 1 is divided into two substantially symmetrical parts by the longitudinal axis 20.
Three transverse lines cross the longitudinal axis and divide the high heeled shoe into four sections: a heel section 6, an arch section 7 and a forefoot section 5 comprising a toe-section 19. The toe section 19 comprises two outer edges 25, 26.
In
In
The shape illustrated in
Although the present invention has been described in connection with the specified embodiments, it should not be construed as being in any way limited to the presented examples. The scope of the present invention is set out by the accompanying claim set. In the context of the claims, the terms “comprising” or “comprises” do not exclude other possible elements or steps. Also, the mentioning of references such as “a” or “an” etc. should not be construed as excluding a plurality. The use of reference signs in the claims with respect to elements indicated in the figures shall also not be construed as limiting the scope of the invention. Furthermore, individual features mentioned in different claims, may possibly be advantageously combined, and the mentioning of these features in different claims does not exclude that a combination of features is not possible and advantageous.
LIST OF REFERENCE SYMBOLS USED
-
- 1 High heeled shoe
- 2 constructive sole
- 3 lower surface of constructive sole, insole, outsole or plateau
- 4 upper surface of constructive sole, insole, outsole or plateau
- 5 forefoot section
- 6 heel section
- 7 arch section
- 8 heel
- 9 upper part
- 10 insole
- 11 first auxetic area
- 12 second auxetic area
- 13 third auxetic area
- 14 first layer of insole
- 15 second layer of insole
- 16 third layer of insole
- 17 outsole
- 18 auxetic cutting
- 19 toe-section
- 20 longitudinal axis
- 21 indentation
- 22 Plateau
- 23 first pillow-like area
- 24 second pillow-like area
- 25 first outer edge
- 26 second outer edge
- 27 pointed tip
- 28 joined auxetic area
Claims
1-10. (canceled)
11. A high heeled shoe having a forefoot section, an arch section and a heel section, the high heeled shoe comprising
- a constructive sole,
- an upper part, attached to the constructive sole such that the upper part and the constructive sole together form an enclosure configured to receive and hold a foot in a specific configuration;
- a heel, directly or indirectly attached to a lower surface of a heel section of the constructive sole; and
- an insole comprising auxetic material
12. A high heeled shoe according to claim 11, wherein the insole comprises pillow-like areas protruding from the insole, the pillow-like areas comprising: wherein the maximum height of each pillow-like area from the upper surface of the insole is at most 1.0 cm, such as 0.5 cm, such as 0.3 cm.
- a first pillow-like area arranged on an upper surface of a forefoot section of the insole, shaped such that it is configured to support an area between metatarsal bones and phalanges of a foot; and/or
- a second pillow-like area arranged on an upper surface of an arch section of the insole, shaped such that it is configured to support the metatarsal pad of the foot and lift it slightly in that area, to direct the weight of a user from the forefoot section towards the heel section;
13. A high heeled shoe according to claim 11, wherein the insole comprises several layers, including at least a first layer and a second layer, wherein
- the first layer of the insole is configured to cover the whole upper surface of the constructive sole, but only comprises auxetic material at one or more auxetic areas and the remaining of the first layer comprises or consists of another material;
- the second layer is arranged on top of the first layer and is made from a material, such as leather, having a thickness of less than 0.2 cm, such as 0.1 cm
14. A high heeled shoe according to claim 11, wherein the insole comprises auxetic material at one or more specific areas, wherein such one or more specific areas include:
- a first auxetic area arranged at an upper surface of a forefoot section of the constructive sole such that it is configured to support an area between metatarsal bones and phalanges of a foot; and/or
- a second auxetic area arranged at an upper surface of an arch section of the constructive sole such that it is configured to support the metatarsal pad of the foot;
- and/or a third auxetic area arranged at an upper surface of an heel section of the constructive sole, having a circular or elliptical shape and configured to support a heel of a user.
15. A high heeled shoe according to claim 14, wherein
- the first auxetic area comprises the first pillow-like area; and/or
- the second auxetic area comprises the second pillow-like area.
16. A high heeled shoe according to claim 14, wherein
- the first auxetic area and the second auxetic area are joined to form a joined auxetic area or
- the first auxetic area, the second auxetic area and the third auxetic area are joined to form a joined auxetic area.
17. A high heeled shoe according to claim 11, wherein the insole further comprises auxetic cutting in a toe-section of the forefoot section, the auxetic cutting extending through all layers of the insole and being configured to allow the toe-section of the insole to expand in at least one direction, such as in two directions, when pressure is applied on the toe-section.
18. A high heeled shoe according to claim 11, wherein the heel section of the insole has an indentation with a circular or elliptical cross-section, wherein the indentation has a maximum depth of 0.2-0.8 cm, a smallest diameter between 3-5 cm and a largest diameter between 4-7 cm
19. A high heeled shoe according to claim 11, wherein the high heeled shoe further comprises an outsole arranged on the lower surface of the constructive sole, covering it either partly or fully, and wherein a forefoot section of the outsole comprises auxetic cutting identical to the auxetic cutting of the insole, and being configured to allow the toe-section of the outsole to expand in at least one direction, such as in two directions, when pressure is applied on the toe-section.
20. A high heeled shoe according to claim 11,
- wherein a longitudinal axis extend through the constructive sole, such that the heel section and the arch section of the constructive sole is divided into two substantially symmetrical parts by the longitudinal axis,
- wherein at least part of a first outer edge of the toe-section of the constructive sole extends in a direction which is parallel with or extends away from the longitudinal axis and at least part of a second outer edge extend towards the longitudinal axis and across the longitudinal axis to meet with the first outer edge to form a pointed tip, wherein the first outer edge is the outer edge configured to be closest to the big toe.
Type: Application
Filed: Apr 8, 2020
Publication Date: Jun 16, 2022
Applicant: FEMININITY APS (Kolding)
Inventor: Thi Hong Lam PHAM (Kolding)
Application Number: 17/601,327