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WO2011123941A1 - Combinaison de chaussure intérieure et de chaussure extérieure et procédé d'utilisation associé - Google Patents

Combinaison de chaussure intérieure et de chaussure extérieure et procédé d'utilisation associé Download PDF

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Publication number
WO2011123941A1
WO2011123941A1 PCT/CA2011/000373 CA2011000373W WO2011123941A1 WO 2011123941 A1 WO2011123941 A1 WO 2011123941A1 CA 2011000373 W CA2011000373 W CA 2011000373W WO 2011123941 A1 WO2011123941 A1 WO 2011123941A1
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WO
WIPO (PCT)
Prior art keywords
shoe
internal
external
outsole
midsole
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.)
Ceased
Application number
PCT/CA2011/000373
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English (en)
Inventor
Marc Kingsley-Poole
Robert Mahlous
Barry Hallenbeck
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2011123941A1 publication Critical patent/WO2011123941A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/16—Overshoes
    • 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
    • A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
    • A43B13/223—Profiled soles
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B19/00—Shoe-shaped inserts; Inserts covering the instep
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/24—Collapsible or convertible

Definitions

  • the present invention generally relates to a combination of an internal shoe and of an external shoe wherein the internal shoe can be worn alone or in combination with the external shoe.
  • the present invention also relates to a non-slip outsole.
  • the present invention is generally providing shoe system comprising an internal shoe comprising a internal sole, a midsole and an external sole, wherein the internal shoe may be worn either as a component of the shoe system or by itself; an external shoe comprising a midsole and an external sole, wherein the external shoe does not comprises a midsole nor an insole; wherein the exterior of the internal shoe closely mates the interior of the external shoe, and wherein the external shoe is adapted to be worn only in combination with the internal shoe and wherein the function of the midsole is replaced by the presence of the midsole of the internal shoe.
  • the present invention is also providing an external shoe for use in combination with an external shoe comprising a internal sole, a midsole and an external sole, wherein the internal shoe may be worn either as a component of the combination or by itself, the external shoe comprising a midsole and an external sole, wherein the external shoe does not comprises a midsole nor an insole, wherein the exterior of the internal shoe closely mates the interior of the external shoe, and wherein the external shoe is adapted to be worn only in combination with the internal shoe and wherein the function of the midsole is replaced by the presence of the midsole of the internal shoe.
  • the present invention is also providing a non-slip outsole for footwear, having a bottom surface, the non-slip outsole comprising: at least one concave portion located under the forefoot area of the foot; a plurality of first rubber cleats comprising rubber tips extending from the outsole in the non-concave portion of the outsole; a plurality of second rubber cleats comprising studs, the studs comprising tips, wherein the second rubber cleats extend from the concave portion of the outsole.
  • the present invention provides the combination of an internal shoe and of an external shoe.
  • the external shoe is configured to receive the internal shoe and is designed to be worn with the internal shoe.
  • the internal shoe can either be worn alone or with the external shoe.
  • the internal shoe is very lightweight and breathable with an insole (also known as foot bed), a cushioned midsole and an outsole.
  • the internal shoe has all the basic elements of a comfort shoe to achieve a low total weight objective.
  • the internal shoe is made of a very lightweight material (preferably ethylene propylene rubber - EPR) to provide traction, durability and adequate support indoors, while attaining the requirement for light weight and comfort.
  • the interior of the external shoe very closely matches the contours of the internal shoe's exterior.
  • the internal shoe and the external shoe fit together securely.
  • the system replicates a high-performance winter or cold weather boot.
  • the external shoe has neither a midsole nor an insole - these elements are provided by the internal shoe since the external shoe is worn with the internal shoe.
  • the external shoe has a rugged rubber outsole for support and durability on rough outdoor terrain.
  • the external shoe is preferably waterproof and when worn together with the internal shoe, provides good insulation for the foot in cold or winter weather.
  • the insulation level of the present external shoe can be adapted to a variety of climate.
  • the midsole of the internal shoe is concealed inside the upper of the internal shoe. This makes the overall exterior surface of the internal shoe smoother than a normal shoe with a cushioning midsole and, thereby, makes sliding the internal shoe into the external shoe easier.
  • the internal shoe cannot shift inside the external shoe because the outer contour of the internal shoe so closely matches the inner contour of the external shoe. Not only is the shape of the internal shoe's outsole outline the same as the external shoe's interior but the arch relief in the internal shoe outsole is also matched by the external shoe's interior.
  • the combination of the external shoe and internal shoe is lightweight and not bulky. Otherwise, the resulting product could not be comfortably worn without discomfort and/or fatigue.
  • Achieving a lightweight, compact and comfortable high-performance cold/winter weather boot/shoe product is the key innovation that differentiates the present invention from galoshes worn with standard shoes or any other modular shoe concept available in the market today.
  • an external shoe according to the present invention may be worn with any other internal shoe of the same size and design category. This important feature allows for variation of the aesthetics of the external shoe when worn with various models of internal shoes and vice versa. Thus the user may "mix and match” as desired to create variable fashion concepts, while retaining the primary functional advantages of this system: lightweight and low profile (non-bulky) footwear that is not uncomfortable, unfashionable or awkward to wear indoors and out.
  • the present invention is also providing a non-slip outsole which provides anti-slip properties while walking outside on slippery surfaces, like snow, ice, mud, grass while minimising damage to indoor surfaces, like hardwood, tile, and linoleum floors.
  • This non- slip outsole comprises a first type of rubber cleat that comprises a rubber tip, and a second type of rubber cleat that comprises a metallic studs comprising a metallic tip.
  • the non-slip outsole is designed with a plurality of rubber cleats having rubber tips, and a plurality of rubber cleats comprising special studs having a tip, the studs being preferably made from metal and more preferably comprising tungsten carbide and aluminum.
  • the rubber cleats comprising the studs are placed in very specific locations on the non-slip outsole for most efficient traction and minimal discomfort when walking indoors.
  • Typical cleated outdoor outsoles are flat bottomed at the forefoot portion and heel portion, but the present non-slip outsole is not. It is to be noted that the present non-slip outsole could be used alone for outdoor shoe or boot.
  • the shape of the non-slip outsole is concave in preferably two areas - the forefoot area and the heel area, and the rubber cleats comprising metallic studs are located in these concavities.
  • the balance of the rubber cleats that do not comprises metallic studs are mainly positioned in the peripheral areas of the outsole that are not concave. This ensures that the metallic studs are not continually in contact with floor surfaces such as wood.
  • the tips of the metallic studs are not in the same plane as the rubber tips of the rubber cleats that do not contain studs.
  • the rubber cleats that do contain the metallic studs are placed in the concave portions of the non-slip outsole so they come into contact with the ground after the rubber cleats.
  • the first type of rubber cleats normally make initial contact with the floor or ground when walking or standing due to their position on the outsole as explained previously. This helps stabilise the shoe when walking and helps reduce or eliminate any lateral slipping which is another potential factor for causing scratching of an indoor floor surface by the cleats with metallic studs. Since most of the body weight is transferred to the floor surface via the cleats with rubber tips, lateral slipping is greatly reduced.
  • the geometry of the metallic studs is also important for minimising damage to the indoor flooring surfaces.
  • the stud tip design geometry is such that it is optimised for minimal flooring damage or scratching while walking or standing indoors while wearing a shoe having the described non-slip outsole. In a preferred embodiment, this is achieved by ensuring the presence of a small radius on the extremity of the metallic stud. In this way, a convex shaped stud is in contact with the floor or ground.
  • An optimal stud tip radius is 2mm, but radii between 1 and 3mm could be considered also.
  • the optimal height of the stud tip is 1.1mm, but the height could range from 0.4 to 1.7mm, for example, and still function.
  • the diameter of the metal stud tip is optimally 2mm, while it could range from 1mm to 4mm.
  • the material of the stud is metal, but it could be ceramic or very hard and tough plastic.
  • the stud could be made of aluminum, steel, tungsten carbide, ceramic or plastic.
  • the stud is made of aluminum with a tungsten carbide tip or insert.
  • the stud could also be made of hardened steel, with or without an anti-rust coating.
  • the stud is made of a hard, but not brittle wear-resistant surface, so it does not wear out too quickly with use.
  • the number of rubber cleat with metallic studs is four per region of concavity, for a total of eight metallic studs per non-slip outsole. Functionality can be achieved with as little as two metallic studs per region of concavity and as many as eight per region of concavity. Most ideally, each region of concavity comprises studs but the non- slip outsole could also be used with studs only in the forefoot area.
  • the internal shoe is designed to be worn with the external shoe and the two components, when worn together must mimic the performance of a one-piece high quality boot.
  • the design geometry and material choices for the internal shoe and the external shoe are crucial for achieving these goals.
  • Preventing relative motion of the shoe/boot system when being worn by the user minimising the allowable spacing (gap) between the internal shoe and the external shoe and choice of materials is important to prevent possible longitudinal or lateral motion of the internal shoe within the external shoe while walking. Further design features of the internal shoe related to the retaining mechanism are crucial to ensuring very limited relative motion in the form of the internal shoe heel lifting off the inner surface of the external shoe supporting surface (strobel board material) while walking.
  • the total weight of the system should be as low as possible, but still sufficiently rigid and supportive to replicate the design performance of a one piece, high-quality cold weather boot.
  • the overall weight per foot of a standard Men's size 9 (USA/Canada) or size 42 (Europe) external shoe/internal shoe combination should be in the 0.50 to 1.00 kg range.
  • the overall weight per foot of a standard Men's size 9 (USA/Canada) or size 42 (Europe) external shoe/internal shoe combination is in the 0.60 to 0.80 kg range.
  • the size 9/42 baseline is an industry standard reference size for shoes/boots and that the weights of smaller and larger sizes shall be proportionally lighter or heavier. The same scalability applies to Women's and Children's sizes.
  • the weight of the external shoe alone is between 0.30 and 0.55kg per foot for a standard Men's size 9 (USA/Canada) or size 42 (Europe) foot. In accordance with a more preferred embodiment, the weight of the external shoe alone is between 0.35 and 0.50kg per foot for a standard Men's size 9 (USA/Canada) or size 42 (Europe) foot.
  • the weight of the internal shoe is preferably in the 0.22 to 0.37kg range per foot for a standard Men's size 9 (USA/Canada) or size 42 (Europe) foot. In a more preferable embodiment, the weight per foot is in the 0.25 to 0.35kg range for a standard Men's size 9 (USA/Canada) or size 42 (Europe) foot.
  • the exterior of the external shoe is waterproof over the majority of its surface area, starting upwardly from the top of the outsole.
  • the waterproof area comprises at least 60% of the area, starting at the top of the outsole and extending upwardly continuously to the bottom of the collar.
  • the waterproof quality of the external shoe is provided by a leather exterior surface in combination with an interior plastic liner extending upwardly from the top of the outsole to the lower surface of the external shoe collar.
  • the waterproof quality may be provided by combinations of other materials such as Cordura, chemically treated leather and suede to render the external shoe waterproof. These later materials are preferable to render the external shoe stain resistant against exposure to water, snow, ice and salt, for example.
  • the outsole of the external shoe is preferably made of synthetic rubber.
  • the internal shoe In order for the internal shoe to be comfortable when worn alone and with the external shoe, it is preferably made using breathable materials.
  • the exterior surface of the internal shoe upper portion (starting upwardly from the top of the outsole) comprises layers consisting of air mesh fabric, suede or leather in combination with an inner layer of spun fibres.
  • Figure 1 is a side view showing the internal shoe and the external shoe in combination.
  • Figures 2a to 2b are side views showing the insertion of a foot in the internal shoe, and the internal shoe in the external shoe.
  • Figure 3a is a side view of an embodiment of the external shoe.
  • Figure 3b is a top view of the external shoe shown in Fig. 3a.
  • Figure 3c is a rear view of the external shoe shown in Fig. 3a.
  • Figure 4a is a side view of an embodiment of the internal shoe.
  • Figure 4b is a top view of the internal shoe shown in Fig. 4b.
  • Figure 4c is another side view of an embodiment of the internal shoe
  • Figure 5a is a bottom view of the outsole of the internal shoe.
  • Figure 5b is a side view of the outsole shown in Fig. 5a.
  • Figure 5c is a cross-section view of the outsole shown in Fig. 5a, along A-A'.
  • Figure 6a is a bottom of the outsole of the internal shoe.
  • Figure 6b is a cross-section view of the outsole shown in Fig. 6a, along B1-B2.
  • Figure 6c is a cross-section view of the outsole shown in Fig. 6a, along C 1-C2.
  • Figure 6d is a cross-section view of the outsole shown in Fig. 6a, along D1-D2.
  • Figure 6e is a rear view of the outsole shown in Fig. 6a.
  • Figure 7a is a bottom view of the non-slip outsole.
  • Figure 7b is a cross-section view of the non-slip outsole of Fig. 7a, along A-Al .
  • Figure 8a is a rear view of the non-slip outsole of Fig. 7a.
  • Figure 8b is a cross-section view of the non-slip outsole of Fig. 7a, along B-Bl .
  • Figure 8c is a cross-section view of the non-slip outsole of Fig. 7a, along C-Cl .
  • Figure 9a is a schematic illustration of a concavity of non-slip outsole in the heel area.
  • Figure 9b is a schematic illustration of a concavity of non-slip outsole in the forefoot area.
  • Figure 9c is a schematic illustration of a concavity of non-slip outsole, along F-Fl
  • Figure 10a is a cross-section view of the rubber studs of the non-slip outsole.
  • Figure 10b is a side view of an embodiment of a cleat.
  • Figure 10c is a side view of a further embodiment of a cleat.
  • Figure 11 is a side view of another embodiment of the external shoe.
  • This invention relates to a lightweight external shoe and internal shoe system, particularly one with an external shoe that must be worn in combination with an internal shoe.
  • This combination performs like a high performance cold weather boot.
  • the combination comprises a lightweight external shoe and a matching lightweight internal shoe. More particularly, the internal shoe may be worn alone and is designed to also act as a high quality indoor comfort shoe.
  • the external shoe is not designed to be worn alone as it does not contain certain standard shoe/boot components that a stand-alone shoe or boot would normally have, namely an insole and a midsole.
  • the present invention discloses a shoe system 100 comprising an internal shoe 200 that can either be worn alone or with an external shoe 300.
  • the internal shoe 200 is very lightweight and breathable having an insole, a cushioned midsole and an outsole.
  • the internal shoe 200 has all the basic elements of a comfort shoe to achieve a low total weight objective.
  • the internal shoe 200 is made of a very lightweight material (preferably ethylene propylene rubber - EPR) to provide traction, durability and adequate support indoors, while attaining the requirement for light weight and comfort.
  • the external shoe 300 is configured to receive the internal shoe 200.
  • the external shoe 300 In order to achieve the lightweight objective of the external shoe 300, it preferably does not comprise a midsole not an insole, since this foot support function is provided by the presence of the midsole an insole of the internal shoe 200.
  • the external shoe 300 has a low-profile, low-friction, centrally located closing device 305, preferably comprising a zipper.
  • the closing device 305 may comprise laces, Velcro attachments or other means.
  • the length of the closing device 305 is preferably at least 50% of the distance from the forward most portion of the external shoe toe to the forward portion of the external shoe collar 307 to facilitate insertion of the foot shod with the internal shoe 200 into the external shoe 300.
  • the length of the opening device 305 is to be adapted to the height and length of the external shoe 300. For example, in the embodiment of external shoe 300 shown in Fig. 1, the height of the external shoe 300 is lower than the height of the external shoe 600 shown in Fig, 3.
  • Figs 2a to 2d are sequential view illustrating the donning of the internal shoe 200 on the foot and the donning of the external shoe 300 over the internal shoe 200.
  • the user insert is foot in the internal shoe 200.
  • Fig. 2c the user inserts his foot, bearing the internal shoe 200, in the external shoe 300 while the closing device 305 is opened.
  • Fig. 2d the internal shoe 200 is completely inserted in the external shoe 300 and the closing device 305 is closed.
  • the zipper comprises locking mechanism to prevent it to open while the user is walking with the external shoe 300.
  • Figs 3a to 3b show an embodiment of the external shoe 600.
  • This embodiment is taller than the embodiment shown in Fig. 2 and Fig. 1 1.
  • the external shoe 600 comprises a closing device 605 starting over the toe area and extending up to the collar 607.
  • the configuration of the closing device is critical to allow a user to be able to insert the internal shoe in the external shoe. If the closing device is not long enough, the user won't be able to insert the internal shoe in the external shoe.
  • the extension 608 gives a grip to the external shoe 600 while a user is inserting the internal shoe in the external shoe 600.
  • the material choice of the external shoe 607 collar is such that the collar 607 is durable, easily grasped by the user while donning the external shoe 600 while wearing the internal shoe 200 and at the same time be low friction enough to not hinder the donning process.
  • the material of the external shoe collar 607 and collar liner is preferably of LycraTM.
  • the internal shoe 200 has a plurality of centrally-located smooth, low-friction longitudinal strips 202, 204, 206 on its upper surface to help reduce the friction between the internal shoe 200 and the external shoe 300 when donning the external shoe 300 over the internal shoe 200.
  • the number of longitudinal strips is three and they are preferably made of smooth materials like suede, leather or rubber.
  • the internal shoe 200 comprises a central longitudinal strip 204 and two lateral longitudinal strips 202 and 206.
  • the internal shoe 200 in order for the internal shoe 200 to maintain a close fit with the foot of the wearer and avoid binding while donning the external shoe 300, the internal shoe 200 preferably has a plurality of centrally located, self-adjusting elastic retaining straps 210, 212, 214. More preferably, there are two and most preferably three retaining straps on the internal shoe 200. In an embodiment, the retaining straps are as short as possible and not very stretchable to help keep the foot well-anchored within the internal shoe 200, but still enough stretchable to prevent causing discomfort to the wearer.
  • the three retaining straps 210, 212, 214 are preferably connected to the longitudinal strips 202, 204, 206 for the purposes of keeping the internal shoe 200 close to the foot at all times, whether being worn with or without the external shoe 300.
  • the retaining straps 210, 212, 214 are preferably sewn to the longitudinal strips 202, 204, 206 and most preferably sewn to the underside of the longitudinal strips 202, 204, 206 such that the retaining straps 210, 212, 214 are located in a plane just below the longitudinal strips 202, 204, 206 to prevent binding when donning the external shoe 300 over the internal shoe 200.
  • the entire lower circumference of the internal shoe 200 comprises a low-friction band 220 to facilitate donning of the external shoe 300.
  • the low-friction material is suede, leather, nylon, polyester or silicone plastic.
  • the height of the band 220 extends upwardly from the outsole for at least 1 ⁇ 4 of the internal shoe 200 height at any given point in the circumference.
  • the low-friction band 220 of the internal shoe 200 extends upwardly from the outsole at least halfway and preferably all the way to the internal shoe 200 collar at the region of the heel.
  • Figs 5 and 6 show the outsole 401 and midsole 402 of the internal shoe 200.
  • the outsole 400 of the internal shoe 200 comprises preferably a plurality of longitudinal ridges 405, 410.
  • the ridges 405, 410 extend over the forefoot area 412 and over the heel area 413.
  • the number of longitudinal ridges 410 is at least two and preferably at least four in the heel area 413.
  • the number of ridges 405 in the forefoot area 412 is at least three, preferably six and most preferably eight.
  • the outsole 400 of the internal shoe 200 is preferably designed on a last which is slightly concave.
  • the radius of the concavity imparts a curvature to the forefoot area 412 of the outsole 400 of the internal shoe 200 and permits the internal shoe 200 to better mimic the form of the human foot that the wearer normally adopts with their shod foot when donning the external shoe 300.
  • the radius of the concavity of the internal shoe is between 180 and 220mm, more preferably between 190 and 210mm and ideally 200mm.
  • the outsole 401 and the midsole 402 of the internal shoe sole 400 are curved toward the toe with a first angle 420 between 3° and 7°. More preferably, the first angle is between 4° and 6° and most preferably between 4.5 and 5.5° to facilitate donning of the external shoe.
  • the internal shoe last also has a high toe spring 415 which helps create the curved effect which also helps make it easier to insert the internal shoe 200 into the external shoe 300.
  • the radius of the toe spring curvature is 200mm in a preferred embodiment.
  • the internal shoe 200 has a narrower / tighter profile with respect to the foot of the wearer compared to ordinary shoes to assist in reducing or eliminating relative motion between the internal shoe 200 and the external shoe 300 such that the internal shoe 200 more closely follows the foot contour and a nearly perfect fit inside the external shoe 300 is achieved.
  • the design of the internal shoe 200 profile includes a gap that is preferably less than 2 mm (this value may vary) between the internal shoe interior and foot exterior at any point in the interior of the internal shoe 200.
  • the design of the shoe system includes a gap that is preferably less than 2 mm (this value may vary) between the internal shoe 200 exterior and external shoe 300 interior.
  • the internal shoe 300 is also shorter in its exterior total length than ordinary shoes to allow it to be worn under the external shoe 300 without rendering the combination too bulky.
  • the internal shoe 200 is preferably shorter (about 15 mm) in exterior length than a standard sport shoe of the same size and model.
  • Figs 7, 8 and 9 refer to the non-slip outsole 500.
  • an embodiment of the non-slip outsole 500 contains a plurality of rubber cleats 510, and a plurality of rubber cleats 505 comprising metallic studs 507 for increased traction when walking on ice, snow and other slippery surfaces. It is to be understood that the non-slip outsole shown herein could be used with any type of shoe or boot.
  • the shape of the non-slip outsole 500 is concave in at least two areas 515 and 520 - the forefoot area 512 and the heel area 513 of the non-slip outsole 500. This ensures that the metallic studs 507 are not continually in contact with floor surfaces such as wood, etc, but are in contact with harder surfaces, like ice. This is achieved by introducing concavities in the non-slip outsole 500 forefoot area 512 and heel area 513.
  • the tips of the metallic studs 507 are not in the same plane as the tips of the rubber cleats 505 that do not contain any studs.
  • the rubber cleats 505, that do contain metallic studs, are placed in the concave portions 515 and 520 of the nono-slip outsole 500 so they come into contact with the ground last.
  • Figs 9a to 9c are schematic illustrations showing exaggerated concavities to better illustrates the concept.
  • Contact is also ensured between the studs 507 and the ice when the user wears a shoe comprising the non-slip outsole 500 while running. This is due to the dynamic impact loading observed during running and jogging.
  • the shape of the studs 507 is as important as their placement on the outsole 500. As shown in Figs 10a to 10c, the studs 507 have a specific protruding tip 520 defining a shoulder 522. This design, along with the particular placement aides in obtaining a good grip on slippery surfaces, but minimises the risk of scratching indoor floor surfaces.
  • the studs are designed with chamfered or rounded tips 524 whereby this tip design minimises possible scratching of indoor flooring surfaces, while maintaining efficacy on slippery surfaces.
  • Figure 10b illustrates a stud comprising a tip having a convex shape 526, further minimizing the risk of scratching indoor floor surfaces.

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

Abstract

La présente invention a trait à la combinaison d'une chaussure intérieure et d'une chaussure extérieure, laquelle chaussure intérieure peut être portée seule ou en association avec la chaussure extérieure. La combinaison présente les mêmes performances qu'une botte d'hiver de haute performance. La présente invention a également trait à une semelle qui est dotée de propriétés antidérapantes lorsque l'utilisateur marche à l'extérieur sur des surfaces meubles, comme la neige, la glace, la boue, l'herbe, tout en minimisant les dommages causés aux surfaces intérieures plus dures, comme le parquet en bois dur, le carrelage et le lino.
PCT/CA2011/000373 2010-04-07 2011-04-07 Combinaison de chaussure intérieure et de chaussure extérieure et procédé d'utilisation associé Ceased WO2011123941A1 (fr)

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US32169410P 2010-04-07 2010-04-07
US61/321,694 2010-04-07

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WO2011123941A1 true WO2011123941A1 (fr) 2011-10-13

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WO2014000110A1 (fr) * 2012-06-29 2014-01-03 8215774 Canada Inc. Couvre-chaussure comprenant une ouverture agrandissable et procédé de fabrication dudit couvre-chaussure
CN104305641A (zh) * 2014-09-23 2015-01-28 邓杵娇 一种防脚癣鞋垫
CN112940358A (zh) * 2021-02-20 2021-06-11 上海澳翔鞋业有限公司 一种冰上防滑鞋底及其制备方法
US20230084256A1 (en) * 2021-09-16 2023-03-16 Brilliant Shoe Development Company, Inc. Boot and tongue closure

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US5396717A (en) * 1993-06-21 1995-03-14 Bell; Michael Convertible overshoe with tear resistant bead
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