EP3349608A1 - Article chaussant - Google Patents

Article chaussant

Info

Publication number
EP3349608A1
EP3349608A1 EP16845380.1A EP16845380A EP3349608A1 EP 3349608 A1 EP3349608 A1 EP 3349608A1 EP 16845380 A EP16845380 A EP 16845380A EP 3349608 A1 EP3349608 A1 EP 3349608A1
Authority
EP
European Patent Office
Prior art keywords
shank
sole
footwear
item
shoe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16845380.1A
Other languages
German (de)
English (en)
Other versions
EP3349608B1 (fr
EP3349608A4 (fr
Inventor
Michael John Cole
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paradox Carbon Flex Footwear Holdings Pty Ltd
Original Assignee
Paradox Carbon Flex Footwear Holdings Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2015903777A external-priority patent/AU2015903777A0/en
Application filed by Paradox Carbon Flex Footwear Holdings Pty Ltd filed Critical Paradox Carbon Flex Footwear Holdings Pty Ltd
Publication of EP3349608A1 publication Critical patent/EP3349608A1/fr
Publication of EP3349608A4 publication Critical patent/EP3349608A4/fr
Application granted granted Critical
Publication of EP3349608B1 publication Critical patent/EP3349608B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/143—Soles; Sole-and-heel integral units characterised by the constructive form provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot
    • A43B13/145—Convex portions, e.g. with a bump or projection, e.g. 'Masai' type shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/42—Filling materials located between the insole and outer sole; Stiffening materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/088—Heel stiffeners
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/22—Supports for the shank or arch of the uppers
    • A43B23/222—Supports for the shank or arch of the uppers characterised by the attachment to the sole
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/37—Sole and heel units

Definitions

  • the present invention relates to items of footwear.
  • the item of footwear may comprise a sandal, dress shoe, a walking shoe, an orthopaedic shoe, a running shoe, or any other type of footwear.
  • a problem with such shoes of the prior art is that they are bulky.
  • a thickness of the sole must be increased to accommodate for the large shank, resulting in a heavy shoe, which renders this type of shank unsuitable for many purposes, including as running shoes.
  • a further problem with such shoes of the prior art is that the sole is prone to break at an edge of the shank.
  • cracks form in the sole of shoes along an edge of the shank, particular in the front of the sole where the shoe is most flexible.
  • rocker sole shoes were, however, found to lack stability and sideways control, and several manufacturers of these shoes were sued for making false claims in relation to their shoes. In short, these rocker sole shoes do not provide adequate support to the wearer.
  • the present invention is directed to shoe, which may at least partially overcome at least one of the abovementioned disadvantages or provide the consumer with a useful or commercial choice.
  • the present invention in one form, resides broadly in an item of footwear including:
  • a fibre reinforced shank extending along a length of the sole to provide rigidity to the sole.
  • the item of footwear is a shoe.
  • the fibre reinforced shank is provided within the sole.
  • the item of footwear comprises a straight last shoe.
  • the sole has substantially straight longitudinal sides.
  • the shank is reinforced by carbon fibre.
  • the shank is formed of carbon fibre reinforced polymer.
  • the shank is configured to store kinetic energy from a one stage of a gait cycle, and use the kinetic energy in another stage of the gait cycle.
  • the shank is disposed between an upper portion of the sole, and a lower portion of the sole.
  • the upper portion of the sole and the lower portion of the sole both extend along an entire length of the sole.
  • the shank may be glued between the upper and lower portions of the sole.
  • the sole may be moulded with shank in place.
  • the shank has a thickness of about 1mm or less.
  • the shank extends across a width of the sole.
  • the item of footwear includes a heel counter, which extends upwardly from the sole.
  • the heel counter may be moulded together with the sole.
  • the heel counter may be sewn into an upper of the shoe.
  • the shank includes a heel portion and a toe portion, and is curved upwards at the toe portion.
  • the shank is curved upwards from a central portion of the shank to opposing ends of the shank.
  • the shank includes a step in width at a boundary between the heel portion and the toe portion.
  • the toe portion is wider than the heel portion.
  • the shank is curved upwards from a central portion of the shank to opposing sides of the shank.
  • the sole may include a plurality of recesses.
  • the plurality of recesses are defined by the outer sole.
  • the invention resides in a method of modifying an existing item of footwear including:
  • Figure 1 illustrates a side view of a base of a shoe, according to an embodiment of the present invention
  • Figure 2 illustrates a bottom view of the shoe of Figure 1, according to an embodiment of the present invention
  • Figure 3 illustrates a sectional cut away view of the shoe of Figure 1 along axis A- A of Figure 2;
  • Figure 4 illustrates a top view of the shank of the shoe of Figure 1, according to an embodiment of the present invention
  • Figure 5 illustrates a sectional view of the shank of Figure 4 along axis B-B of Figure 4;
  • Figure 6 illustrates a front view of shank of Figure 4.
  • Figure 7 illustrates a cross sectional view of the shank of Figure 4 along axis C-C of Figure 4;
  • Figure 8A illustrates a heel-strike stage of a gait cycle with reference to the shoe of Figure 1, according to an embodiment of the present invention
  • Figure 8B illustrates a mid-stance stage of the gait cycle
  • Figure 8C illustrates a heel-off stage of the gait cycle.
  • Figure 1 illustrates a side view of a base of a shoe 100, according to an embodiment of the present invention.
  • the shoe 100 includes a full length carbon fibre shank moulded inside the sole, which prevents unwanted flex in the shoe 100 and allows complete biomechanical control of the foot and ankle enabling a consistent and effective gait cycle.
  • the shoe 100 includes a sole 105, which is curved to provide a rocker that assists the wearer in walking when the front portion of the foot is lowered and the heel is lifted.
  • the rocker of the sole 105 enables a naturally smooth follow through motion when walking or running, and reduces the ground reaction force that is exerted on the body when compared to other footwear.
  • the sole 105 includes a lower sole portion 105a, which is in contact with the ground when in use, an upper sole portion 105b, and a carbon fibre shank 110 disposed between the lower sole portion 105a and the upper sole portion 105b.
  • the upper sole portion 105a and the lower sole portion 105b extend along an entire length of the sole 105.
  • the carbon fibre shank 110 is lightweight and compact, and provides rigidity to the sole, while retaining limited flexibility.
  • the shank 110 extends substantially along an entire length and width of the sole 105. As such, there are no weight bearing areas of the sole 105 unsupported by the shank 110, which prevents cracking to the sole 105 that would otherwise occur at edges of the shank 110.
  • the shoe further includes a heel counter 115, which extends upwardly from the sole 105, and is moulded together with the sole.
  • the heel counter 115 extends around the heel providing a medial (inside) and lateral (outside) border to the heel. As such, the heel counter 115 supports and limits movement of the heel, and positively positions the heel and ankle in the shoe 100.
  • the heel counter 115 is formed independently of the sole 105. In such case, the counter 115 may be stitched or glued into an upper of the shoe 110, and held in place by the upper.
  • the heel counter 115 extends laterally and medially to the proximal of the metatarsal heads.
  • the heel counter 115 may be formed thermoplastic, carbon fibre or any other suitable material.
  • the sole 105 is preferably made of composite materials or plastics.
  • the shank 110 may be glued between the upper and lower portions 105a, 105b, or moulded with shank 110 in place.
  • the shank 110 may be held in place by pins, by magnets or any other suitable means, as the upper and lower portions 105a, 105b are moulded around the shank 110.
  • the lower sole portion 105a includes a bevelled lower edge 120, which provides a smooth transition between a lower surface and a side of the sole 105.
  • the smooth transition can help soften an impact of the shoe 100 against the ground, particularly when accidently impacting the ground on an angle, while providing an aesthetically pleasing shoe design.
  • Figure 2 illustrates a bottom view of the shoe 100, according to an embodiment of the present invention.
  • the sole 105 has substantially straight sides 205 which prevents the tendency of the foot (and shoe 100) to rotate inwardly or outwardly.
  • the shoe 100 has a straight last, which distributes ground reaction forces both medially and laterally, and is wide, which makes the shoe 100 more stable.
  • the direction of ground reaction force is determined by the shape of the last of the shoe 100.
  • the ground reaction force is the upward pressure from the foot and produces movement at each lower extremity joint (ankle, knee and hip).
  • the ground reaction force is equal in magnitude and opposite in direction to the force that the body exerts on the supporting surface through the foot each time your foot strikes the ground.
  • the magnitude and direction of the ground reaction force correlates with the stability of the footwear, and the straight last of the shoe 100 provides greater stability and thus decreased ground reaction force to the wearer.
  • sole is illustrated as a universal sole that is symmetrical, the skilled addressee will readily appreciate that left and right soles (and thus shoes) may be made that are not symmetrical, as is typical for retail shoes.
  • the sole 105 may include a plurality of recesses, not illustrated, to reduce the weight of the shoe 100 and help guide flexibility in the sole.
  • the apertures would typically extend partway into the lower sole portion 105a only, and thus a lower side of the shank 110 would protected by the lower sole portion 105a.
  • Figure 3 illustrates a sectional cut away view of the shoe 100 along axis A-A of Figure 2.
  • the shank 110 extends along a length of the sole 105, and provides the shoe with stiffness and rigidity, both along a length and width of the shoe 100.
  • FIG. 4 illustrates a top view of the shank 110, according to an embodiment of the present invention.
  • the shank 110 includes a heel portion 405, corresponding to a heel portion of the shoe 100, and a toe portion 410 corresponding to a toe portion of the shoe 100.
  • the shank 110 is formed of carbon fibre reinforced polymer.
  • layers of carbon fibre may be woven, and laid upon each other with a resin or thermoplastic to form the shank 110.
  • other fibre reinforced materials may provide a suitably rigid and lightweight shank.
  • the shank 110 has a thickness of about 3mm or less. This provides a lightweight construction, while providing strength to the shoe 100. In preferred embodiments, the shank 110 has a thickness of about 2mm or less, and in even more preferred embodiments, the shank 110 has a thickness of about 1mm or less.
  • a side of the shank 110 includes a step 415 between the heel portion 405 and the toe portion 410.
  • the step 415 corresponds to a step of the upper sole portion 105b, and enables a rigidity of the shank to vary along the length of the shoe 100, even when the shoe has a straight last.
  • the toe portion 410 is wider than the heel portion 405, which provides additional rigidity to the toe portion 410 when stepping forward.
  • the shank 110 is curved upwards at the toe portion 410. This enables the shank 110 to conform to the curve of the rocker sole 105, and provide a "spring" in the shoe 100 when walking.
  • the shank 110 is also curved upwards from a central portion 705 of the shank 110 to opposing sides 710 of the shank 110. This helps prevent pronation (inward) and super-nation (outward) rolling of the feet, ankles or knees while standing, walking or running by providing lateral support to the shoe 100.
  • contoured full length carbon fibre shank 110 helps reform the rocker sole shape when body weight is applied or withdrawn giving the footwear far greater strength and wear through evenly balanced body weight and pressure distribution.
  • the shank 110 may be substantially flat, may be curved along a length of the shank 110 only, or curved along a width of the shank 110 only.
  • Figure 8A- Figure 8C illustrates a gait cycle with reference to the shoe 100, according to an embodiment of the present invention.
  • the kinetic energy storage properties of the shank 110 are illustrated with reference to the gait cycle, which provides a balanced and controlled naturally smooth follow through motion from heel to toe.
  • FIG. 8A illustrates heel strike (initial contact) stage of the gait cycle. As the heel of the shoe 100 contacts the ground 805, the heel provides stability and correct positioning of the shoe 100 onto the ground 805. As this stage, downward pressure is applied to a rear of the shank 110, as illustrated by arrow 810a.
  • Figure 8B illustrates a mid-stance stage of the gait cycle.
  • weight bearing forces body weight
  • FIG. 810b illustrates a mid-stance stage of the gait cycle.
  • Figure 8C illustrates a heel-off (propulsion) stage of the gait cycle.
  • weight bearing forces move forward along the shank 110, and downward pressure is applied to a front of the shank 110 only, as illustrated by arrow 810d.
  • the shank 110 reforms into its original shape, applying upward pressure to a rear of the shank 110, as illustrated by arrow 810e.
  • the shank 110 essentially stores kinetic energy from the mid-stance stage, which is then used in the heel-off stage to propel the shoe forward. This provides a naturally smooth follow through motion, utilising minimal energy, and can minimise aggravation, stress, wear and tear to the wearer's feet, ankles, knees, lower back.
  • the kinetic energy storage characteristics of the shank 110 can not only assist users in walking, but can also be used to assist users when running, standing and moving around generally, and can even be of assistance to athletes and sportspeople.
  • base of the shoe 100 While only a base of the shoe 100 is illustrated, the skilled addressee will readily appreciate that an upper may be attached to base. Alternatively, the base may be configured to receive straps to form a sandal.
  • the shoe 100 may be adapted to suit people with feet problems, or for a specific purpose, such as a running shoe, walking shoe, and the like. Similarly, the shoe may be adapted to suit people that are on their feet significant parts of the day, such as nurses and the like.
  • the shoe 100 may be orthotic friendly, and thus may be configured to receive orthotics, which may be glued or otherwise attached to an inside of the shoe 100. This is particularly useful when the shoe is used for medical purposes, but may also be useful when improving the posture of the wearer.
  • the shoe 100 is lightweight and has improved bounce back characteristics (ground reaction force) and decreased midsole break down (upward pressure from the foot), which makes the shoe particularly useful when walking or running.
  • an existing shoe may be modified to include the carbon fibre shank.
  • part of the sole of the shoe may be removed, and the shank may be glued to the remaining sole.
  • a lower sole may then be glued to the bottom of the shank.
  • the shoe may have a similar appearance to what it had prior to modification.
  • a substantially flat sole may be modified to form a rocker sole.
  • Advantages of embodiments of the invention include an ability to provide complete biomechanical control of the wearer' s foot and ankle enabling a consistent and effective gait cycle.
  • the shoe 100 provides a balanced and controlled follow through motion from heel to toe when the wearer' s foot strikes the ground, and reduces impact, energy, and motion requirements of the foot.
  • the shoe allows the wearers body weight to be evenly distributed throughout their lower and upper body skeleton to minimise aggravation, stress, wear and tear to your feet, ankles, knees, lower back and spine while standing, walking or running.
  • Such biomechanical control enables optimal heel strike, mid foot biomechanical control as well as fore foot biomechanical control, and thus includes controlling throughout the gait cycle.
  • Such movement within the foot and ankle influences the ability of the lower limbs to control or reduce weight bearing forces. It is thus important to distribute and dissipate compressive, tensile, shearing, and rotatory forces during the phase of the gait cycle.
  • the full length carbon fibre shank 110 prevents twisting (torsion control) all throughout the sole of the shoe, and help reform the rocker sole shape when body weight is applied and withdrawn giving the footwear far greater strength and wear through evenly balanced body weight and pressure distribution
  • the carbon fibre shank 110 can be provided in a variety of levels stiffness. This enables the shoe to be customised to a variety of purposes, with different focus on control and performance.
  • a stiff shank may be provided for full protection and control of the biomechanics of the foot to enhance the toe off phase of the gait cycle, for example for rehabilitation, and a semi stiff shank may be provided for high performance and sports, such as running or race walking.
  • the shoe 100 may be configured to work with various types of arches and feet.
  • the shoe 100 may be configured to work with a flat or low arch, a normal or medium arch, or a high arch/cavus.
  • the shoe may be configured to work with a medial longitudinal arch (the biggest and most recognisable arch, along the inner side of the foot), a lateral longitudinal arch (smaller arch along the outer side of the foot), and/or a transverse arch (arch across the front part of the foot, which because of its location can't be seen in action)
  • the shoes 100 may include a contoured cork and natural latex footbed for healthy feet to support the natural shape of the foot.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne un article chaussant qui est compact, léger, élastique et stable ainsi qu'un procédé de modification d'un article chaussant existant . L'article chaussant comprend une semelle; et un cambrion renforcé par des fibres s'étendant sur une longueur de la semelle, de manière à conférer de la rigidité à la semelle.
EP16845380.1A 2015-09-16 2016-08-26 Article chaussant Active EP3349608B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2015903777A AU2015903777A0 (en) 2015-09-16 Item of Footwear
PCT/AU2016/050791 WO2017045018A1 (fr) 2015-09-16 2016-08-26 Article chaussant

Publications (3)

Publication Number Publication Date
EP3349608A1 true EP3349608A1 (fr) 2018-07-25
EP3349608A4 EP3349608A4 (fr) 2019-05-08
EP3349608B1 EP3349608B1 (fr) 2021-10-06

Family

ID=58288005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16845380.1A Active EP3349608B1 (fr) 2015-09-16 2016-08-26 Article chaussant

Country Status (5)

Country Link
US (1) US20180255868A1 (fr)
EP (1) EP3349608B1 (fr)
CN (1) CN108024597A (fr)
AU (1) AU2016324346B2 (fr)
WO (1) WO2017045018A1 (fr)

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US10842224B2 (en) 2015-10-02 2020-11-24 Nike, Inc. Plate for footwear
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US11344078B2 (en) 2018-04-16 2022-05-31 Nike, Inc. Outsole plate
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US10842224B2 (en) 2015-10-02 2020-11-24 Nike, Inc. Plate for footwear
US11659888B2 (en) 2015-10-02 2023-05-30 Nike, Inc. Plate with foam for footwear
EP3967175A1 (fr) * 2015-10-02 2022-03-16 NIKE Innovate C.V. Plaque pour chaussure
EP3355737B1 (fr) * 2015-10-02 2022-03-30 Nike Innovate C.V. Plaque pour article chaussant
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US11344081B2 (en) 2015-10-02 2022-05-31 Nike, Inc. Plate with foam for footwear
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US10743607B2 (en) 2016-07-20 2020-08-18 Nike, Inc. Composite plate for an article of footwear or equipment
US11647808B2 (en) 2016-07-20 2023-05-16 Nike, Inc. Composite plate for an article of footwear or equipment
US11147340B2 (en) 2016-07-20 2021-10-19 Nike, Inc. Footwear plate
US11678716B2 (en) 2016-07-20 2023-06-20 Nike, Inc. Footwear plate
US11678717B2 (en) 2016-07-20 2023-06-20 Nike, Inc. Footwear plate
US10798992B2 (en) 2016-07-20 2020-10-13 Nike, Inc. Footwear plate
US12048346B2 (en) 2016-07-20 2024-07-30 Nike, Inc. Footwear plate
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US12022910B2 (en) 2018-04-16 2024-07-02 Nike, Inc. Outsole plate
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Also Published As

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WO2017045018A1 (fr) 2017-03-23
AU2016324346A1 (en) 2018-04-26
EP3349608B1 (fr) 2021-10-06
EP3349608A4 (fr) 2019-05-08
US20180255868A1 (en) 2018-09-13
CN108024597A (zh) 2018-05-11
AU2016324346B2 (en) 2021-03-18

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