Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
  • A43B13/36—Easily-exchangeable soles
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B21/00—Heels; Top-pieces or top-lifts
  • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B21/00—Heels; Top-pieces or top-lifts
  • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
  • A43B21/39—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B21/00—Heels; Top-pieces or top-lifts
  • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
  • A43B21/39—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove
  • A43B21/40—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove by dovetail
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B21/00—Heels; Top-pieces or top-lifts
  • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
  • A43B21/42—Heels with replaceable or adjustable parts, e.g. top lift

Definitions

• the present invention relates to a low heel shoe that can be quickly converted to a high heel shoe and vice versa, through a system of removable soles.
• US Patent 5,675,916 describes a shoe with interchangeable heels in which the heel is screwed into the rear part of the shoe.
• the end of the heel of the shoe is provided with mounting means on which the heels of different heights can be attached.
• such a device has the following functional problem.
• a low heel to a high heel it does not take into account the change of curvature of the shoe that must adapt to the curvature of the foot. This is particularly problematic for closed and rigid shoes. Indeed, when we go from a low heel where the ground adhesion is optimal to a high heel, the shoe will tilt forward, the ground adhesion is no longer optimal to the front of the shoe. Conversely, when you go from a high heel where the grip is optimal to a low heel, the shoe will tilt by straightening the front of the shoe, making it curve. In both cases, the adhesion to the ground is not optimal for at least one position of the heel either high or low.
• US Pat. No. 5,347,730 has proposed a solution to this problem. It refers to a device able to convert a low-heeled shoe into a high-heeled shoe.
• the low heel is permanently attached to the shoe and has attachment means to a removable high heel.
• This document discloses an extensible band incorporated in the sole of the shoe which, when the shoe is modified between a high and low heel, can be manually adjusted by bending the sole at a low or high heel level so that the upper maintains the shape of the shoe corresponding to the state of the heel either high or low.
• the patent application US 2014/0215852 A1 proposes a comfortable shoe with low heel whose flexible leather sole allows a flexion of the shoe and has a reinforcement at the bending place to support the arch of the wearer.
• the heel has a fastening system complementary to that of a removable high heel.
• the present invention aims to provide a shoe for moving from a low heel to a high heel without the disadvantages of the state of the art.
• the shoe of the invention has the technical features to adapt the curvature of the shoe to the curvature of the foot when going from a low heel to a high heel or vice versa ensuring good grip on the ground and respect for the morphology of the foot regardless of the height of the heel.
• the shoe of the invention must also allow sufficient support of the arch and avoid rotation of the heel.
• a first aspect of the present invention relates to a shoe adaptable in height comprising:
• a flexible sole comprising a fixing means at the front of the flexible sole and a fastening means at the rear of the flexible sole and a rod;
• Preferred embodiments of the invention further comprise in combination one or more of the following features:
• At least one of the rigid walking shoes comprises a shank, preferably comprising a material selected from the group consisting of metal, wood and thermosetting resin, preferably reinforced with fibers, preferably glass or carbon;
• the first rigid walking sole has a camber different from that of the second rigid walking sole
• the flexible sole further comprises a fastening means substantially in the middle of the sole and the stiff running sole comprises a fastening means substantially in the middle of the rigid sole complementary to the fastening means essentially in the middle of the flexible sole.
• these fastening means essentially in the middle of the soleplate are, interchangeably, a male fastener capable of sliding in a complementary gutter.
• they extend over 5 to 80% of the length of the sole, preferably from 10 to 50%;
• the fastening means of the flexible sole and the fastening means of rigid step insoles further comprise a connecting element adapted to connect the fastening means corresponding to each other;
• the attachment means at the front of the flexible sole is a male edge periphery of the flexible sole adapted to slip into a female notch of the fastening means at the front of the rigid sole.
• the male edge and its female notch complement extend at least 5 cm from the front of the sole;
• the fastening means at the rear of the flexible sole and the fastening means at the rear of the rigid sole are a complementary elastic locking system by clips;
• the thickness of the flexible sole is between 1 and 10 mm;
• the thickness of the rigid running sole is between 1 and 150 mm;
• the flexible sole is an orthopedic insole
• the shoe further comprises a protective sole or an orthopedic sole;
• the shoe is closed and the rod preferably comprises an expandable member at a pivot point between the part of the rigid sole adhering to the ground and the detaching part;
• - Rigid walking soles preferably comprise partial stem elements, preferably at the rear, so as to provide greater support of the heel, and possibly the ankle.
• Figure 1 shows views of the profile of open shoes according to the invention in which a flexible sole comprising the rod is combined with a rigid running sole comprising alternately a high heel (Figure 1A) or low ( Figure 1B).
• Figure 2A shows a top view of a shoe of the invention in which the rod is not shown.
• the soles are fixed to one another by means of complementary fastening means located at the front of the sole and at the rear.
• a sectional view along the axis A-A is shown in FIG. 2B.
• Figure 3A shows a top view of a flexible sole according to the invention comprising fastening means at the front and rear of the sole.
• a sectional view along the axis BB is shown in FIG. 3B.
• Figure 4A shows a top view of a rigid running sole according to the invention comprising fastening means at the front and rear of the sole.
• a sectional view along the axis CC is shown in FIG. 4B.
• Figure 5A shows a top view of a shoe of the invention in which the rod is not shown.
• the soles are fixed to each other by means of fastening means in the front, in the middle and at the rear of the sole.
• a sectional view along the axis D-D is shown in Figure 5B and a sectional view along the axis D '-D' is shown in Figure 5A.
• Figure 6A shows a top view of a flexible sole according to the invention comprising fastening means at the front, the middle and the rear of the sole.
• a sectional view along the E-E axis is shown in Figure 6B.
• Figure 7A shows a top view of a rigid walking shoe according to the invention comprising fastening means at the front, the middle and the rear of the sole.
• a sectional view along the axis F-F is shown in Figure 7B.
• Figure 8 shows side views of closed shoe type pumps according to the invention.
• the rod has an elastic element at the bend of the shoe.
• the flexible sole comprising the upper is combined with a rigid running sole comprising alternately a high heel (top figure) or a low heel (bottom figure).
• the S ⁇ 13.ge comprises the various elements that are between the foot and the ground.
• a central zone included in the arch of the shoe, in the zone normally off contact with the ground, located between the heel at the rear and the front zone. contact with the ground.
• the “outsole” is the part in contact with the ground. It is conventionally fixed according to the case to the first mounting (welded), the midsole or directly to the rod (mounting moccasin).
• the walking sole corresponds to the rigid running sole. It is removably attached to the first mounting.
• rigid is meant that the sole is made of a material conferring a certain rigidity as opposed to a flexible type of sole. The rigidity of a material depends on its Young's modulus. The Young's modulus (MY) is the mechanical stress that would give rise to an elongation of 100% of the initial length of a material (it would therefore double in length), if it could actually be applied.
• the material permanently deforms, or breaks, well before this value is reached.
• a material whose Young's modulus is very high is said to be rigid.
• Plastics and organic materials, foams are generally not rigid, they are said to be flexible, elastic or flexible (for a bending effort).
• the outsole can also be made of wood.
• the “first assembly” is the part on which is mounted the rod.
• the first mounting corresponds to the flexible sole.
• the flexible sole is preferably made of a flexible material such as natural or synthetic rubber (MY between 0.007 and 0.004 Gpa), polyethylene (MY between 0.2 and 0.7 Gpa), polyurethane (including MY). between 0.002 and 0.02 Gpa).
• a material is considered rigid if its Young's modulus is greater than 1 Gpa and flexible if its Young's modulus is less than 1 Gpa.
• the Young's modulus of the rigid sole is greater than 5GPa.
• the shank preferably has a module greater than 5GPa, while the rest of the outsole has a more flexible module (for example between 1 and 5GPa).
• the "first of cleanliness" is a thin leather slat which is glued to the first assembly and which is a fine finish. She is in direct contact with the foot.
• the manufacturer's or retailer's mark and the shoe size are often branded.
• a thin layer of foam can be slid underneath to improve comfort. When it covers only the back of the shoe, it is called heel.
• welt is a small leather band that is sewn or glued around the perimeter of the shoe and covers the lower part of the stem a few millimeters. It can be decorative with a fancy cut edge. In dress shoes, when not a bump to hide the junction of the stem and the sole, it is called welt bead.
• the "shank” is a wooden rod (not to rust), metal or resin that keeps the curve of the camber in front of the heel. On some models of very high, this one can be very thick. It has a very important role in the comfort of the shoe.
• the rigid sole of the invention must allow to maintain the high heel perfectly vertical, to avoid twisting of the ankle, or more generally an imbalance of the user.
• the rigid sole must therefore both prevent torsional movements and bending movements.
• the rigid sole of the invention preferably comprises a shank.
• the "heel” gives height to the back of the shoes.
• the “good end” is the thin layer of rubber or plastic that is under the heel (for women) or the back of the heel (for men) and is intended to be changed when is used.
• the “stem” is the outer portion of the shoe that covers the foot. It is composed of several parts.
• vamp or slap is the piece of leather or fabric that is on the forefoot.
• the "quarters" are the inner and outer parts of the shoe.
• the "baguette” is the narrow leather band that hides, on the heel, if necessary, the seam that brings together the two neighborhoods.
• Figure 1 are shown views of open shoe profile 1 according to the invention in which a flexible sole 2 comprising a rod 10 (consisting of a upper 17 and a quarter 18) is combined alternately with a rigid walking shoe 3,3 'comprising a heel 11 high (Figure 1A) or low ( Figure 1B).
• the rigid sole 3,3 ' is removable and covers the entire length of the foot. It adapts perfectly to the curvature of the foot and the grip at ground level is optimal.
• Figure 2A shows a top view of a shoe of the invention according to a first embodiment.
• the rod is not shown so that the fastening means are visible.
• the soles 2, 3 are fixed to each other by means of complementary fastening means located at the front of the sole plate 4.7 and at the rear 6, 9.
• a sectional view along the axis A-A is shown in FIG. 2B.
• the flexible sole 2 shown in Figure 3A comprises a first attachment means at the front of the sole 4 and a first fastening means at the rear of the sole 6.
• a sectional view along the axis BB is shown in Figure 3B.
• the rigid walking sole 3 shown in Figure 4A comprises a first fixing second to the front of the sole 7 and a second fastening means at the rear of the sole 9.
• a sectional view according to the DC axis is shown in Figure 4B.
• the fixing means 4 located at the front of the flexible sole 2 consists for example of a male edge 14 covering the periphery of the sole adapted to slip into a female notch 15, second complementary fastening means 7 of the rigid sole 3.
• the complementary fixing means 6, 9 located at the rear of the soles 2,3 correspond for example to a system of elastic casing by clips. This is for example the case of a rounded element located on the flexible soleplate 2 which is adapted to snap into a complementary notch on the rigid walking sole 3.
• the attachment means 6, 9 may also include a junction element 19 connecting them to each other. An exemplary joining element 19 is shown in FIG. 4A and 4B. Its lower part slides in a notch of the rigid sole 3 and its upper part is clipped into a complementary notch located in the flexible sole 2.
• Figure 5A shows a top view of a shoe of the invention according to a second embodiment.
• the rod is not shown so that the fastening means are visible.
• the soles 2, 3 are fixed to each other by means of complementary fixing means located at the front of the soleplate 4,7, essentially at the middle 5.8 and at the rear 6.9.
• a sectional view along the axis D '-D' shows that the first fastening means 5 located essentially in the middle of the flexible sole 2 is for example a male fastener 12 capable of sliding in a trough 13, second complementary fastening means 8 of the rigid sole 3.
• a sectional view along the axis DD is shown in Figure 5B.
• the flexible sole 2 shown in Figure 6A comprises a first fastening means at the front of the sole 4, a first fastening means in the middle of the sole 5 and a first fastening means at the rear of the sole 6.
• a sectional view along the axis EE is shown in Figure 6B.
• the rigid walking sole 3 shown in Figure 7A comprises a first fixing second to the front of the sole 7, a second fastening element in the middle of the sole 8 and a second attachment means at the rear of the sole 9.
• a sectional view along the FF axis is shown in Figure 7B.
• FIG 8 shows closed shoe profile views 1 according to the invention.
• the rod 10 comprises an expandable member 16 at the pivot point between the part of the rigid sole 3 adhering to the ground and the part detaching.
• This expandable element composed of a polymer having elastic properties such as an elastomer, makes it possible to adjust the rod to the curvature of the foot while avoiding a surplus of material of the upper (fold) in the presence of a high heel or a stretch weakens it in the presence of a low heel.
• the flexible sole 2 comprising the rod 10 is combined with a rigid walking sole 3 alternately comprising a high heel 11 (top figure) or a low heel (bottom figure).
• the fact of having a rigid sole that covers the entire foot allows to vary the design of the sole at leisure to meet functional or aesthetic demands.
• the sole could have a non-slip coating in winter and a smooth coating in summer.
• the sole could have varied colors and textures (including a wedge heel for example) to meet the criteria of fashion.
• the invention also makes it possible to be trained to wear a heel for people who are not used to it and iron easily to a flat heel.
• the invention is combinable with orthopedic insoles which necessarily cover the entire length of the foot.
• the orthopedic sole could be combined with rigid walking soles with aesthetic or functional variants;
• the removable sole makes it possible to respect the dimensions of the foot by reducing the tensions exerted on it during a change of height but also thanks to its adaptation to the inclination of the foot and its compatibility with orthopedic insoles.
• the invention makes it possible to respect the morphology of the foot through each desired combination.

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• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53502365

Family Applications (1)

Country Status (5)

Citations (13)

Family Cites Families (1)

• 2015
  • 2015-03-13 BE BE2015/5139A patent/BE1022832B1/fr not_active IP Right Cessation
• 2016
  • 2016-03-11 ES ES16709455T patent/ES2768772T3/es active Active
  • 2016-03-11 WO PCT/EP2016/055312 patent/WO2016146531A1/fr active Application Filing
  • 2016-03-11 PT PT167094556T patent/PT3267829T/pt unknown
  • 2016-03-11 EP EP16709455.6A patent/EP3267829B1/fr active Active

Patent Citations (13)

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