US20150257477A1 - Footwear with improved sole assembly - Google Patents
Footwear with improved sole assembly Download PDFInfo
- Publication number
- US20150257477A1 US20150257477A1 US14/725,657 US201514725657A US2015257477A1 US 20150257477 A1 US20150257477 A1 US 20150257477A1 US 201514725657 A US201514725657 A US 201514725657A US 2015257477 A1 US2015257477 A1 US 2015257477A1
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- US
- United States
- Prior art keywords
- envelope
- strobel
- sole
- fitting element
- article
- 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.)
- Abandoned
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
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- 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
- A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B9/00—Footwear characterised by the assembling of the individual parts
- A43B9/02—Footwear stitched or nailed through
-
- 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
- A43B13/16—Pieced soles
-
- 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
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
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- 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
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0235—Different layers of different material
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/07—Linings therefor
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B9/00—Footwear characterised by the assembling of the individual parts
- A43B9/08—Turned footwear
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B9/00—Footwear characterised by the assembling of the individual parts
- A43B9/12—Stuck or cemented footwear
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D13/00—Machines for pulling-over the uppers when loosely laid upon the last and tacking the toe end
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/06—Devices for gluing soles on shoe bottoms
Definitions
- the invention relates to footwear and, particularly, footwear for any of various sports and/or for hiking. More particularly, footwear of the invention include those having a double upper, in the sense that the upper includes an outer envelope and an inner envelope. Footwear of this type can include athletic footwear for use in fields such as hiking, racing on flat or mountainous terrain, skateboarding, ball-playing sports, cross-country or telemark skiing, snowboarding, snowshoeing, and the like.
- each article of footwear i.e., each boot or shoe (hereafter, “shoe” for convenience)
- Shoe must have a certain flexibility and a good damping capability. Flexibility must be understood as the ability to closely follow certain deformations of the foot. This involves, for example, enabling good foot rolling movement when walking. Damping serves to reduce, or even prevent, fatigue or injuries that can result from supports or impacts on the ground, or from various forces.
- a shoe must also fulfill a variety of functions, sometimes contradictory, such as ensuring adequate support and/or tightening of the foot, while also providing it with satisfactory comfort.
- FIGS. 1 and 2 illustrate, in total and partial transverse cross section, respectively, an outer sole assembly 2 and an upper 3 .
- the upper includes a first envelope 4 and a second envelope 5 , both being adapted to cover the foot directly or indirectly.
- the first envelope 4 is associated with a first lasting sole 6 to form a first fitting element 7 .
- the second envelope 5 is associated with a second lasting sole 8 to form a second fitting element 9 , the latter being mounted inside the first fitting element 7 .
- the second fitting element 9 is typically a slipper, i.e., a liner. Consequently, the lasting soles 6 , 8 are part of an inner sole assembly 10 .
- the first envelope 4 of the shoe 1 extends in the area of a lateral side 11 and a medial side 12 , as well as in the area of a substantial portion of the first lasting sole 6 .
- This structure is conventional, because the first envelope 4 is mounted upon the lasting sole 6 by means of an adhesive, or cement, layer 13 .
- the sole 6 is relatively rigid in order to withstand the assembly process, also referred to as the lasting process.
- the adhesive process is carried by pulling the envelope 4 so as to press it flat upon the sole 6 , a last being inserted in the fitting element 7 . This is referred to as the conventional lasting. This makes it possible to exert sufficient pressure while the adhesive is being heated in order to obtain the first fitting element 7 .
- the second fitting element 9 is obtained, for example, by affixing the second envelope 5 to the second lasting sole 8 using stitching 14 .
- This is referred to as strobel lasting.
- the sole 8 which is flexible and can be stitched, is called the strobel sole.
- a molded, unitary structure, or any equivalent, could be provided.
- first fitting element 7 is adapted to ensure support and tightening of the foot, while the second fitting element 9 fulfills other functions, such as providing a certain comfort.
- first fitting element 7 is affixed to the outer sole assembly 2 via an adhesive layer 15 .
- the shoe 1 according to FIGS. 1 and 2 has a certain flexibility and a certain damping capability.
- thermal insulation Indeed, under difficult conditions of use, such as walking in snow, the user's feet can become cold. This is due to the formation of a thermal bridge at the junction between the upper and the outer sole assembly, such bridge being created by the crushing of the material during the conventional lasting operation. Indeed, during this operation, it is necessary to heat and pull very hard on the constituent materials of the envelope 4 .
- Another disadvantage is that of the conventional lasting, rendering the manufacturing process difficult. Indeed, adhesively positioning of an envelope on a lasting sole is a relatively difficult process. Powerful and precise machines are necessary for pulling, positioning, and gluing the envelope.
- Another disadvantage inherent in certain known flexible shoes is the poor positional stability of the second fitting element in the first. For example, removing the foot sometimes causes an undesired displacement of the second element with respect to the first.
- the invention provides an improved article of footwear, such as a shoe or a boot.
- the invention facilitates the rolling movement of the foot in an article of footwear provided with a plurality of fitting elements, and improves its damping capability.
- the invention also guarantees the positional stability of one fitting element with respect to the other.
- the invention also provides good thermal insulation, in particular at the junction between the upper and the outer sole assembly.
- the invention also simplifies the shoe manufacturing process, and lowers the production costs.
- the invention is directed to an article of footwear that includes a sole assembly and an upper, the article of footwear extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and heightwise from the sole assembly up to an upper end, the article of footwear including a first fitting element as well as a second fitting element.
- the first fitting element of the article of footwear according to the invention furthermore includes a first envelope and a first sole of the strobel type, the first envelope being affixed to the first strobel sole at least by means of stitching, and the second fitting element includes a second envelope and a second sole of the strobel type, the second envelope being fixed to the second strobel sole by means of at least stitching.
- stitching to affix an envelope and a strobel sole preserves the structure of these elements.
- the envelopes and the strobel soles are not, or are only slightly, stretched, compressed, or modified overall during manufacture.
- the thickness of an envelope or of a strobel sole remains uniform, or substantially uniform, along its entire surface.
- the stitching technique involves using a sole of the strobel type, which is more flexible than it would be with the adhesive technique. Indeed, in this latter case, a lasting sole is structured to withstand the pressures from applying and adhering the envelope on the sole, as well as keeps the envelope in place after the adhesion.
- the strobel soles which can be stitched, are made out of flexible and/or damping materials. Consequently, the greater flexibility of the shoe of the invention enables a better dissipation of the energy related to impulses, impacts, and various forces.
- the resulting advantages include better foot rolling movement and, overall, better damping.
- a good positional stability of the second fitting element in the first is also noted.
- the stitching technique makes it possible to use precise patterns, thus providing the fitting elements with precise configurations. Therefore, it is easy to provide an adjustment without play and constraint of the second element in the first.
- One of the resulting advantages is a better foot support in the upper.
- the article of footwear according to the invention has a better thermal insulation, in particular at the junction between the upper and the outer sole assembly. This results from preserving the constituent materials of the envelopes and/or of the strobel soles. This preservation results from using the stitching technique. It is not necessary to stretch or heat the materials.
- the technique of the invention simplifies and lowers the cost of the manufacturing process for the article of footwear.
- FIG. 1 is a transverse cross-section of a shoe according to the prior art
- FIG. 2 is a partial enlargement of FIG. 1 ;
- FIG. 3 is a perspective front view of an article of footwear, top side, according to a first embodiment of the invention
- FIG. 4 is a transverse cross section along the line IV-IV of FIG. 3 , prior to the fitting elements being affixed to the outer sole assembly;
- FIG. 5 is a transverse cross section, similar to FIG. 4 , with the fitting elements affixed to the outer sole assembly;
- FIG. 6 is a partial enlargement of FIG. 5 ;
- FIG. 7 is a perspective exploded view of the article of footwear according to FIG. 3 ;
- FIG. 8 is a perspective front view of an article of footwear according to a second embodiment of the invention.
- the first embodiment which is described hereinafter, relates by way of example to articles of footwear, such as boots or shoes, for walking or hiking on hard ground or in snow, or with regard to other surfaces.
- the invention relates to footwear particularly for use in other fields of endeavor and for various purposes, such as those mentioned above.
- shoes and boots are not to be construed as a limitation on the types of footwear that are encompassed by the invention.
- footwear having various types of uppers are embraced by the invention, such as footwear having low uppers, high uppers, and mid-uppers.
- a first embodiment is described hereinafter with reference to FIGS. 3 to 7 .
- a hiking boot 21 is adapted to receive the foot of a wearer.
- the boot 21 includes an outer sole assembly 22 and an upper 23 arranged on the sole assembly.
- the boot extends lengthwise, along a longitudinal direction L, between a rear end, or heel 24 , and a front end, or tip 25 ; and widthwise, along a transverse direction W, between a lateral side 26 and a medial side 27 .
- the upper 23 includes a lower portion 30 , adapted to surround the foot, as well as an upper portion 31 , adapted to surround the ankle and possibly the lower leg.
- the invention also encompasses footwear having only the low portion, i.e., an article of footwear, or shoe, having a low upper, i.e., an upper having an upper edge that extends below the ankle of the wearer.
- the invention encompasses footwear having a mid-upper, i.e., an upper having an upper edge that extends at the ankle, or substantially at the ankle.
- the boot 21 extends heightwise from the outer sole assembly 22 to an upper end 32 , or collar, i.e., up to the free end of the upper portion 31 of the boot or of the upper 23 .
- the boot 21 is structured to allow good foot rolling movement when walking, transmissions of sensory information and impulse forces for supports or jump landings. For this reason, the outer sole assembly 22 and the upper 23 are relatively flexible.
- the boot 21 further includes a first tightening device 35 , adapted to reversibly tighten the upper 23 , i.e., selectively both to tighten the upper and to loosen the forces of the upper relative to the foot therewithin.
- the tightening device 35 is not described further here as it is well-known to the one of ordinary skill in the art. It is however noted, still within the scope of the invention, that the boot 21 can be provided with a different tightening device or not to include a tightening device. In the latter case, the upper 23 is continuous from the lateral side 26 to the medial side 27 .
- the boot 21 includes a first fitting element 41 , as well as a second fitting element 42 .
- the first fitting element 41 is an external element, directly exposed to possible contact with objects and obstacles.
- the first tightening device 35 is in fact arranged on the first fitting element 41 .
- the second fitting element 42 is an internal element, adapted to be inserted within the first element 41 .
- the first fitting element 41 includes a first envelope 43 and a first sole 44 of the strobel type, the first envelope 43 , in an edge area, that is, an area of the bottom extremity, being fixed to the first strobel sole 44 by an arrangement, or connection, that includes stitching 45 extending along the periphery of the first strobel sole.
- the second fitting element 42 includes a second envelope 46 and a second sole 47 of the strobel type, the second envelope 46 , in an edge area, that is, an area of the bottom extremity, being fixed to the second strobel sole 47 by an arrangement, or connection, that includes stitching 48 extending along the periphery of the second strobel sole.
- first and second strobel soles 44 , 47 designated as such because they are adapted to be sewn to the envelopes 43 , 46 , respectively.
- first strobel 44 and the second strobel 47 reference will be simply made to the first strobel 44 and the second strobel 47 .
- the stitching 45 between the first envelope 43 and the first strobel 44 provides the first fitting element 41 with great flexibility.
- the second fitting element 42 is also very flexible, because it is also constructed using a technique other than the adhesive lasting technique. Consequently, the shoe 21 has great flexibility, in particular in the area of the junction between the upper 23 and the outer sole assembly 22 . As a result, foot rolling movement when walking or running is facilitated.
- the first envelope 43 although illustratively simplified, includes one or more layers, that is, a plurality of layers, depending upon the application.
- the first envelope 43 includes an outer layer, a core, an inner layer, and an inner lining.
- the second envelope 46 includes one or more layers.
- the second envelope 46 includes an insulating foam layer, or a waterproof membrane, or a combination of both. Stitching if made on a waterproof membrane, can be covered by a substance or a strip adapted to block the holes made during the stitching. Consequently, the upper 23 includes at least two envelopes 43 , 46 having different mechanical and physical properties.
- the boot 21 includes an inner sole assembly 55 , which includes the first strobel 44 and second strobel 47 .
- the inner sole assembly 55 can be provided to further include an insole, not shown. Such further insole would be in contact with the foot, inasmuch as it would be positioned within the second fitting element 42 .
- the shoe 21 includes a complete sole assembly 56 comprised of the outer sole assembly 22 and the inner sole assembly 55 .
- the first fitting element 41 calls for the stitching technique
- the first strobel 44 selected is very flexible with respect to the lasting sole used in the conventional adhesive lasting. This flexibility enables a stitch to be made. This is the reason why the complete sole assembly 56 according to the invention is more flexible than a complete sole assembly according to the prior art.
- the flexibility of the first strobel 44 is substantially equal to the flexibility of the second strobel 47 .
- the rigidity of the first lasting sole is equal to or greater than 150% of the rigidity of the strobel sole of the second fitting element.
- the stitching 45 which affixes the first envelope 43 to the first strobel 44 , extends over the entire junction between the envelope 43 and the first strobel 44 .
- the stitching 45 makes a complete turn about the first strobel 44 .
- This provides the first fitting element 41 with maximum flexibility.
- partial stitching could be provided, as well as an adhesive where stitching is not employed. In such a case, certain portions of the element 41 are more flexible than others.
- the stitching 48 which affixes the second envelope 46 to the second strobel 47 , extends over the entire junction between the envelope 46 and the second strobel 47 .
- the stitching 48 makes a complete turn about the second strobel 47 .
- the flexibility of the second fitting element 42 is maximum.
- partial stitching could be provided.
- the upper 23 is required to be affixed to the outer sole assembly 22 . More precisely, the first fitting element 41 is adhesively affixed to the outer sole assembly 22 , using an adhesive layer 60 , or cement.
- the outer sole assembly 22 includes a plurality of layers, such as, for example, an outsole 61 , or external sole, adapted to contact the ground, as well as a damping midsole 62 , inserted between the outsole 61 and the first fitting element 41 .
- the outsole 61 includes rubber, or any abrasion-resistant material.
- the damping midsole 62 includes an absorbing material, such as foam made of ethyl vinyl acetate (EVA) or any equivalent.
- EVA ethyl vinyl acetate
- the outer sole assembly 22 can include a single layer or, on the contrary, more layers, such as three or more layers.
- the outer sole assembly 22 has a lip 63 , in the area of the junction with the first fitting element 41 , to increase the surface of contact with the fitting element 41 .
- the lip 63 originates from the damping midsole 62 .
- the lip 63 is continuous and follows the contour of the outer sole assembly 22 .
- a sectioned or discontinuous lip could be provided.
- a continuous lip increases the usable surface for affixing the sole assembly 22 to the first fitting element 41 . Consequently, the adhesive layer 60 extends along the lip 63 and on the top 64 of the outer sole assembly 22 . This adhesive layer 60 extends in the area of the lower portion 65 of the first strobel 44 , and in the area of the base of the first envelope 43 .
- the second fitting element 42 is affixed to the first fitting element 41 by a means shown in the form of cement or adhesive layer 70 .
- the second strobel 47 is affixed to the first strobel 44 by means of cement/adhesive.
- other structures such as a pair of fabrics having respective hook and loop fastening elements (such as Velcro®), could be provided.
- the first strobel 44 has passages 73 (three being exemplarily illustrated), adapted to promote the application of the adhesive constituting the two layers 60 , 70 , that is, they are adhesive-receiving passages.
- passages 73 are temporary, being created via partial cutouts, i.e., slits, in the strobel sole 44 , which is otherwise generally continuous within its periphery, as shown.
- permanent passages obtained by complete cutouts, could alternatively be provided for adhesive.
- an adhesive could be injected via hollow needles, or using a thermoplastic adhesive.
- the adhesive/cement 70 enables a permanent retention of the fitting elements with respect to one another. “Permanent retention,” in this context, means that the fitting elements 41 and 42 , i.e., first and second strobel soles 44 , 47 , once adhesively joined, would not retain their integrity, or at least not easily retain their integrity, by attempts to undo the adhesive joining.
- a method of manufacturing the boot 21 can be summarized as follows. Such a method involves making a first fitting element 41 , which includes a first envelope 43 and a first strobel sole 44 assembled to one another by stitching; making a second fitting element 42 , which includes a second envelope 46 and a second strobel sole 47 assembled to one another by stitching; making an outer sole assembly 22 ; adhesively affixing the second fitting element 42 to the first fitting element 41 ; and affixing the outer sole assembly 22 to the first fitting element 41 , so that the thickness t 1 of the first envelope 43 and/or the thickness t 2 of the second envelope 46 (see FIG. 5 , e.g.), in the area of the junction with the sole assembly 22 , is between 50% and 100% of the value it has away from this junction, i.e., spaced from the junction.
- the thickness t 1 of the first envelope 43 is substantially constant, or uniform, in particular along the lateral side 26 and/or the medial side 27 .
- the thickness t 1 is substantially constant.
- the thickness t 1 is substantially constant in the vicinity and area of the peripheral lip 63 of the outer sole assembly 22 . This is because the pressure from gluing the first fitting element 41 on the sole assembly 22 is low.
- the constituent materials of the envelope 43 and of the first sole 44 are preserved, in the sense that their structure remains the same everywhere. In particular, this structure is not irreversibly crushed.
- the envelope is not tensionally stressed in order to be applied on a lasting sole.
- the thickness t 1 of the first envelope 43 measured in the area of the stitching 45 , ranges between 90% and 100% of this same thickness t 1 when measured in the area of the top 75 of the lip 63 .
- Such a small variation in thickness is found in particular in a snow boot, which is a boot having no device for tightening the upper, i.e., a boot whose upper is continuous from one side 26 , 27 to the other.
- the thickness t 1 can range between 50% and 100% of this same thickness t 1 in the area of the top 75 of the lip 63 .
- the preceding also applies to the second fitting element 42 .
- the thickness t 2 of the second envelope 46 is substantially constant, or uniform, in particular along the lateral side 26 and/or the medial side 27 .
- the thickness t 2 is substantially constant in the vicinity of the junction between the second envelope 46 and the second strobel 47 , as well as in the area of this junction.
- the thickness t 2 is substantially constant in the vicinity and area of the peripheral lip 63 of the outer sole assembly 22 .
- the pressure from gluing the second fitting element 42 in the first element 41 is low, even very low.
- the constituent materials of the envelope 46 and of the second sole 47 are preserved, their structure remaining the same everywhere.
- the thickness t 2 of the second envelope 46 measured in the area of the stitching 48 , ranges between 90% and 100% of this same thickness t 2 when measured in the area of the top 75 of the lip 63 .
- the thickness t 2 in different respective embodiments, can range between 50% and 100% of the thickness t 2 in the area of the top 75 of the lip 63 .
- the second envelope 46 is provided to include a waterproof layer or membrane
- the second strobel 47 is also provided to include a waterproof layer or membrane.
- the second fitting element 42 is a slipper, or sock liner, which is impervious or very resistant to water penetration. It is advantageous to cover the stitching 48 with a waterproof strip of material glued to both the second envelope 46 and the sole 47 . Such a strip renders the stitching 48 impervious by blocking the passage holes for the threads of the stitching. Waterproofness can be obtained by other means, such as a direct application of a covering material, or the positioning of a waterproof extra sole.
- FIG. 8 A second embodiment of the invention is summarily shown in FIG. 8 . Only the differences with respect to the first embodiment are shown.
- a shoe 81 includes an outer sole assembly 82 and an upper 83 .
- the upper 83 is a low upper, in the sense that it includes a lower portion 90 , excluding any upper portion.
- the upper end 92 , or collar, of the lower portion 90 is below the area of the ankle when the shoe 81 is worn.
- the shoe 81 is consequently well-adapted for walking or running.
- the article of footwear according to the invention can be made from materials and according to implementation techniques and methods known to those of ordinary skill in the art of footwear and footwear manufacturing.
- the shoe can include a third fitting element.
- This space could be naturally filled with air, and used as a heat insulator.
- the space can be filled with other insulating materials.
Abstract
An article of footwear, including a sole assembly and an upper, the article of footwear extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and heightwise from the outer sole assembly to an upper end, the article of footwear including a first fitting element as well as a second fitting element. The first fitting element includes a first envelope and a first sole of the strobel type, the first envelope being fixed to the first strobel sole at least with stitching. The second fitting element includes a second envelope and a second sole of the strobel type, the second envelope being fixed to the second strobel sole at least with stitching.
Description
- This application is a continuation under 35 USC §120 of nonprovisional U.S. patent application Ser. No. 12/951,473, filed Nov. 22, 2010, which claims the benefit under 35 USC §119(a) of French patent application No. 09/05604, filed Nov. 23, 2009. The disclosures of both of the aforementioned applications are hereby incorporated by reference thereto in their entireties.
- 1. Field of the Invention
- The invention relates to footwear and, particularly, footwear for any of various sports and/or for hiking. More particularly, footwear of the invention include those having a double upper, in the sense that the upper includes an outer envelope and an inner envelope. Footwear of this type can include athletic footwear for use in fields such as hiking, racing on flat or mountainous terrain, skateboarding, ball-playing sports, cross-country or telemark skiing, snowboarding, snowshoeing, and the like.
- 2. Background Information
- For the intended use, each article of footwear, i.e., each boot or shoe (hereafter, “shoe” for convenience), must have a certain flexibility and a good damping capability. Flexibility must be understood as the ability to closely follow certain deformations of the foot. This involves, for example, enabling good foot rolling movement when walking. Damping serves to reduce, or even prevent, fatigue or injuries that can result from supports or impacts on the ground, or from various forces.
- A shoe must also fulfill a variety of functions, sometimes contradictory, such as ensuring adequate support and/or tightening of the foot, while also providing it with satisfactory comfort.
- Thus, it is known to manufacture shoes as shown in
FIGS. 1 and 2 . These two figures illustrate, in total and partial transverse cross section, respectively, an outer sole assembly 2 and an upper 3. The upper includes a first envelope 4 and asecond envelope 5, both being adapted to cover the foot directly or indirectly. The first envelope 4 is associated with a first lasting sole 6 to form afirst fitting element 7. Thesecond envelope 5 is associated with a second lasting sole 8 to form a second fitting element 9, the latter being mounted inside thefirst fitting element 7. The second fitting element 9 is typically a slipper, i.e., a liner. Consequently, thelasting soles sole assembly 10. The first envelope 4 of theshoe 1 extends in the area of alateral side 11 and amedial side 12, as well as in the area of a substantial portion of the first lasting sole 6. This structure is conventional, because the first envelope 4 is mounted upon the lasting sole 6 by means of an adhesive, or cement,layer 13. The sole 6 is relatively rigid in order to withstand the assembly process, also referred to as the lasting process. The adhesive process is carried by pulling the envelope 4 so as to press it flat upon the sole 6, a last being inserted in thefitting element 7. This is referred to as the conventional lasting. This makes it possible to exert sufficient pressure while the adhesive is being heated in order to obtain thefirst fitting element 7. The second fitting element 9 is obtained, for example, by affixing thesecond envelope 5 to the second lasting sole 8 usingstitching 14. This is referred to as strobel lasting. The sole 8, which is flexible and can be stitched, is called the strobel sole. Alternatively, a molded, unitary structure, or any equivalent, could be provided. - It is to be understood that the
first fitting element 7 is adapted to ensure support and tightening of the foot, while the second fitting element 9 fulfills other functions, such as providing a certain comfort. In addition, thefirst fitting element 7 is affixed to the outer sole assembly 2 via anadhesive layer 15. In the end, theshoe 1 according toFIGS. 1 and 2 has a certain flexibility and a certain damping capability. - Generally speaking, flexible shoes provided with two fitting elements according to the prior art have the following disadvantage: they still hinder the foot rolling movement, at least partially, due to the rigid lasting board, especially for racing; and the transmission of supports, impacts, and other forces is overly intense. In other words, known shoes lack flexibility, and their damping capability is insufficient, because the folded portion of the envelope 4, associated with the
adhesive layer 13, creates an extra thickness that increases the rigidity of the shoe. - Another disadvantage is that of thermal insulation. Indeed, under difficult conditions of use, such as walking in snow, the user's feet can become cold. This is due to the formation of a thermal bridge at the junction between the upper and the outer sole assembly, such bridge being created by the crushing of the material during the conventional lasting operation. Indeed, during this operation, it is necessary to heat and pull very hard on the constituent materials of the envelope 4.
- Another disadvantage is that of the conventional lasting, rendering the manufacturing process difficult. Indeed, adhesively positioning of an envelope on a lasting sole is a relatively difficult process. Powerful and precise machines are necessary for pulling, positioning, and gluing the envelope.
- Another disadvantage inherent in certain known flexible shoes, is the poor positional stability of the second fitting element in the first. For example, removing the foot sometimes causes an undesired displacement of the second element with respect to the first.
- In view of the preceding, the invention provides an improved article of footwear, such as a shoe or a boot. In particular, the invention facilitates the rolling movement of the foot in an article of footwear provided with a plurality of fitting elements, and improves its damping capability.
- The invention also guarantees the positional stability of one fitting element with respect to the other.
- The invention also provides good thermal insulation, in particular at the junction between the upper and the outer sole assembly.
- The invention also simplifies the shoe manufacturing process, and lowers the production costs.
- To this end, the invention is directed to an article of footwear that includes a sole assembly and an upper, the article of footwear extending lengthwise from a rear end to a front end, widthwise between a lateral side and a medial side, and heightwise from the sole assembly up to an upper end, the article of footwear including a first fitting element as well as a second fitting element.
- The first fitting element of the article of footwear according to the invention furthermore includes a first envelope and a first sole of the strobel type, the first envelope being affixed to the first strobel sole at least by means of stitching, and the second fitting element includes a second envelope and a second sole of the strobel type, the second envelope being fixed to the second strobel sole by means of at least stitching.
- Using stitching to affix an envelope and a strobel sole preserves the structure of these elements. This means in particular that the envelopes and the strobel soles are not, or are only slightly, stretched, compressed, or modified overall during manufacture. Thus, for example, the thickness of an envelope or of a strobel sole remains uniform, or substantially uniform, along its entire surface. Also, the stitching technique involves using a sole of the strobel type, which is more flexible than it would be with the adhesive technique. Indeed, in this latter case, a lasting sole is structured to withstand the pressures from applying and adhering the envelope on the sole, as well as keeps the envelope in place after the adhesion. These constraints are inexistent in the footwear of the invention, which provides greater flexibility to the lower portion of the upper and/or the sole assembly than in an article of footwear according to the prior art. The strobel soles, which can be stitched, are made out of flexible and/or damping materials. Consequently, the greater flexibility of the shoe of the invention enables a better dissipation of the energy related to impulses, impacts, and various forces.
- The resulting advantages include better foot rolling movement and, overall, better damping.
- A good positional stability of the second fitting element in the first is also noted. Indeed, the stitching technique makes it possible to use precise patterns, thus providing the fitting elements with precise configurations. Therefore, it is easy to provide an adjustment without play and constraint of the second element in the first. One of the resulting advantages is a better foot support in the upper.
- The article of footwear according to the invention has a better thermal insulation, in particular at the junction between the upper and the outer sole assembly. This results from preserving the constituent materials of the envelopes and/or of the strobel soles. This preservation results from using the stitching technique. It is not necessary to stretch or heat the materials. The technique of the invention simplifies and lowers the cost of the manufacturing process for the article of footwear.
- Other characteristics and advantages of the invention will be better understood from the description that follows, with reference to the annexed drawings illustrating, by way of non-limiting embodiments, how the invention can be embodied, and in which:
-
FIG. 1 is a transverse cross-section of a shoe according to the prior art; -
FIG. 2 is a partial enlargement ofFIG. 1 ; -
FIG. 3 is a perspective front view of an article of footwear, top side, according to a first embodiment of the invention; -
FIG. 4 is a transverse cross section along the line IV-IV ofFIG. 3 , prior to the fitting elements being affixed to the outer sole assembly; -
FIG. 5 is a transverse cross section, similar toFIG. 4 , with the fitting elements affixed to the outer sole assembly; -
FIG. 6 is a partial enlargement ofFIG. 5 ; -
FIG. 7 is a perspective exploded view of the article of footwear according toFIG. 3 ; and -
FIG. 8 is a perspective front view of an article of footwear according to a second embodiment of the invention. - The first embodiment, which is described hereinafter, relates by way of example to articles of footwear, such as boots or shoes, for walking or hiking on hard ground or in snow, or with regard to other surfaces. The invention relates to footwear particularly for use in other fields of endeavor and for various purposes, such as those mentioned above. Although reference to shoes and boots is made herein, such terms are not to be construed as a limitation on the types of footwear that are encompassed by the invention. As one example, footwear having various types of uppers are embraced by the invention, such as footwear having low uppers, high uppers, and mid-uppers.
- A first embodiment is described hereinafter with reference to
FIGS. 3 to 7 . - As shown in
FIG. 3 , ahiking boot 21 is adapted to receive the foot of a wearer. In a known fashion, theboot 21 includes an outersole assembly 22 and an upper 23 arranged on the sole assembly. The boot extends lengthwise, along a longitudinal direction L, between a rear end, orheel 24, and a front end, ortip 25; and widthwise, along a transverse direction W, between alateral side 26 and amedial side 27. - As shown, the upper 23 includes a
lower portion 30, adapted to surround the foot, as well as anupper portion 31, adapted to surround the ankle and possibly the lower leg. However, as described below, the invention also encompasses footwear having only the low portion, i.e., an article of footwear, or shoe, having a low upper, i.e., an upper having an upper edge that extends below the ankle of the wearer. In addition, the invention encompasses footwear having a mid-upper, i.e., an upper having an upper edge that extends at the ankle, or substantially at the ankle. - According to the first illustrated embodiment, the
boot 21 extends heightwise from the outersole assembly 22 to anupper end 32, or collar, i.e., up to the free end of theupper portion 31 of the boot or of the upper 23. - The
boot 21 is structured to allow good foot rolling movement when walking, transmissions of sensory information and impulse forces for supports or jump landings. For this reason, the outersole assembly 22 and the upper 23 are relatively flexible. - The
boot 21 further includes afirst tightening device 35, adapted to reversibly tighten the upper 23, i.e., selectively both to tighten the upper and to loosen the forces of the upper relative to the foot therewithin. The tighteningdevice 35 is not described further here as it is well-known to the one of ordinary skill in the art. It is however noted, still within the scope of the invention, that theboot 21 can be provided with a different tightening device or not to include a tightening device. In the latter case, the upper 23 is continuous from thelateral side 26 to themedial side 27. - As can be understood from
FIGS. 4 to 6 , in particular, theboot 21 includes a firstfitting element 41, as well as a secondfitting element 42. Explained further below, the firstfitting element 41 is an external element, directly exposed to possible contact with objects and obstacles. Thefirst tightening device 35 is in fact arranged on the firstfitting element 41. The secondfitting element 42 is an internal element, adapted to be inserted within thefirst element 41. - According to the invention, the first
fitting element 41 includes afirst envelope 43 and a first sole 44 of the strobel type, thefirst envelope 43, in an edge area, that is, an area of the bottom extremity, being fixed to thefirst strobel sole 44 by an arrangement, or connection, that includesstitching 45 extending along the periphery of the first strobel sole. The secondfitting element 42 includes asecond envelope 46 and a second sole 47 of the strobel type, thesecond envelope 46, in an edge area, that is, an area of the bottom extremity, being fixed to thesecond strobel sole 47 by an arrangement, or connection, that includesstitching 48 extending along the periphery of the second strobel sole. - With respect to the terms employed, a rigorous respect for tradition requires reference to first and
second strobel soles envelopes first strobel 44 and thesecond strobel 47. - The
stitching 45 between thefirst envelope 43 and thefirst strobel 44 provides the firstfitting element 41 with great flexibility. This means that the flexibility of thefirst element 41 is greater than it would be with the conventional adhesive lasting technique. The secondfitting element 42 is also very flexible, because it is also constructed using a technique other than the adhesive lasting technique. Consequently, theshoe 21 has great flexibility, in particular in the area of the junction between the upper 23 and the outersole assembly 22. As a result, foot rolling movement when walking or running is facilitated. - The aforementioned advantage is obtained with
envelopes first envelope 43, although illustratively simplified, includes one or more layers, that is, a plurality of layers, depending upon the application. For example, thefirst envelope 43 includes an outer layer, a core, an inner layer, and an inner lining. Similarly, thesecond envelope 46 includes one or more layers. For example, thesecond envelope 46 includes an insulating foam layer, or a waterproof membrane, or a combination of both. Stitching if made on a waterproof membrane, can be covered by a substance or a strip adapted to block the holes made during the stitching. Consequently, the upper 23 includes at least twoenvelopes - The
boot 21 includes an innersole assembly 55, which includes thefirst strobel 44 andsecond strobel 47. The innersole assembly 55 can be provided to further include an insole, not shown. Such further insole would be in contact with the foot, inasmuch as it would be positioned within the secondfitting element 42. - Taking into account all of the components, the
shoe 21 includes a completesole assembly 56 comprised of the outersole assembly 22 and the innersole assembly 55. Given that the firstfitting element 41 calls for the stitching technique, thefirst strobel 44 selected is very flexible with respect to the lasting sole used in the conventional adhesive lasting. This flexibility enables a stitch to be made. This is the reason why the completesole assembly 56 according to the invention is more flexible than a complete sole assembly according to the prior art. - By way of example, and in a non-limiting manner, the flexibility of the
first strobel 44 is substantially equal to the flexibility of thesecond strobel 47. This means that the flexibility of thefirst strobel 44 is equal to more or less than 50% of the flexibility of the second strobel. It could also be said that the rigidity of thefirst strobel 44 is equal to more or less than 50% of the rigidity of thesecond strobel 47, even if these rigidities are low. In comparison with the prior art, with respect to adhesive lasting, the rigidity of the first lasting sole is equal to or greater than 150% of the rigidity of the strobel sole of the second fitting element. - To construct the
shoe 21 according to the first embodiment, with reference to the embodiment illustrated inFIGS. 4 to 7 , thestitching 45, which affixes thefirst envelope 43 to thefirst strobel 44, extends over the entire junction between theenvelope 43 and thefirst strobel 44. In other words, thestitching 45 makes a complete turn about thefirst strobel 44. This provides the firstfitting element 41 with maximum flexibility. Alternatively, partial stitching could be provided, as well as an adhesive where stitching is not employed. In such a case, certain portions of theelement 41 are more flexible than others. - According to the same principle, the
stitching 48, which affixes thesecond envelope 46 to thesecond strobel 47, extends over the entire junction between theenvelope 46 and thesecond strobel 47. Thestitching 48 makes a complete turn about thesecond strobel 47. Thus, the flexibility of the secondfitting element 42 is maximum. Alternatively, partial stitching could be provided. - To obtain a completely assembled
shoe 21, the upper 23 is required to be affixed to the outersole assembly 22. More precisely, the firstfitting element 41 is adhesively affixed to the outersole assembly 22, using anadhesive layer 60, or cement. - Although not limiting to the invention, the outer
sole assembly 22 includes a plurality of layers, such as, for example, anoutsole 61, or external sole, adapted to contact the ground, as well as a dampingmidsole 62, inserted between theoutsole 61 and the firstfitting element 41. In a known fashion, theoutsole 61 includes rubber, or any abrasion-resistant material. The dampingmidsole 62 includes an absorbing material, such as foam made of ethyl vinyl acetate (EVA) or any equivalent. The outersole assembly 22 can include a single layer or, on the contrary, more layers, such as three or more layers. - According to the first embodiment, the outer
sole assembly 22 has alip 63, in the area of the junction with the firstfitting element 41, to increase the surface of contact with thefitting element 41. In this case, thelip 63 originates from the dampingmidsole 62. Thelip 63 is continuous and follows the contour of the outersole assembly 22. Alternatively, a sectioned or discontinuous lip could be provided. A continuous lip increases the usable surface for affixing thesole assembly 22 to the firstfitting element 41. Consequently, theadhesive layer 60 extends along thelip 63 and on the top 64 of the outersole assembly 22. Thisadhesive layer 60 extends in the area of thelower portion 65 of thefirst strobel 44, and in the area of the base of thefirst envelope 43. - According to the first embodiment of the invention, the second
fitting element 42 is affixed to the firstfitting element 41 by a means shown in the form of cement oradhesive layer 70. More precisely, thesecond strobel 47 is affixed to thefirst strobel 44 by means of cement/adhesive. Alternatively, other structures, such as a pair of fabrics having respective hook and loop fastening elements (such as Velcro®), could be provided. As shown inFIG. 7 , thefirst strobel 44 has passages 73 (three being exemplarily illustrated), adapted to promote the application of the adhesive constituting the twolayers passages 73 are temporary, being created via partial cutouts, i.e., slits, in thestrobel sole 44, which is otherwise generally continuous within its periphery, as shown. However, permanent passages, obtained by complete cutouts, could alternatively be provided for adhesive. As another alternative, an adhesive could be injected via hollow needles, or using a thermoplastic adhesive. The adhesive/cement 70 enables a permanent retention of the fitting elements with respect to one another. “Permanent retention,” in this context, means that thefitting elements second strobel soles - A method of manufacturing the
boot 21 can be summarized as follows. Such a method involves making a firstfitting element 41, which includes afirst envelope 43 and a first strobel sole 44 assembled to one another by stitching; making a secondfitting element 42, which includes asecond envelope 46 and a second strobel sole 47 assembled to one another by stitching; making an outersole assembly 22; adhesively affixing the secondfitting element 42 to the firstfitting element 41; and affixing the outersole assembly 22 to the firstfitting element 41, so that the thickness t1 of thefirst envelope 43 and/or the thickness t2 of the second envelope 46 (seeFIG. 5 , e.g.), in the area of the junction with thesole assembly 22, is between 50% and 100% of the value it has away from this junction, i.e., spaced from the junction. - In fact, the thickness t1 of the
first envelope 43 is substantially constant, or uniform, in particular along thelateral side 26 and/or themedial side 27. Particularly near the junction between thefirst envelope 43 and the first lasting sole 44, as well as in the area of this junction itself, the thickness t1 is substantially constant. In other words, the thickness t1 is substantially constant in the vicinity and area of theperipheral lip 63 of the outersole assembly 22. This is because the pressure from gluing the firstfitting element 41 on thesole assembly 22 is low. The constituent materials of theenvelope 43 and of the first sole 44 are preserved, in the sense that their structure remains the same everywhere. In particular, this structure is not irreversibly crushed. Moreover, in the invention, the envelope is not tensionally stressed in order to be applied on a lasting sole. - The thickness t1 of the
first envelope 43, measured in the area of thestitching 45, ranges between 90% and 100% of this same thickness t1 when measured in the area of the top 75 of thelip 63. Such a small variation in thickness is found in particular in a snow boot, which is a boot having no device for tightening the upper, i.e., a boot whose upper is continuous from oneside stitching 45, in different respective embodiments, the thickness t1 can range between 50% and 100% of this same thickness t1 in the area of the top 75 of thelip 63. This variation, still small compared to that observed in a conventional shoe assembled by gluing the envelope on the lasting sole, is noted in shoes that are more adapted to walking or running on harder surfaces. In any case, preserving all the thickness t1, or at least a substantial portion of the thickness t1, improves thermal insulation. Such insulation is preserved in the area of the junction between theenvelope 43 and the outersole assembly 22. There is no obstructing thermal bridge, and comfort with the foot within theboot 21 is greater, especially in snow. - The preceding also applies to the second
fitting element 42. The thickness t2 of thesecond envelope 46 is substantially constant, or uniform, in particular along thelateral side 26 and/or themedial side 27. The thickness t2 is substantially constant in the vicinity of the junction between thesecond envelope 46 and thesecond strobel 47, as well as in the area of this junction. The thickness t2 is substantially constant in the vicinity and area of theperipheral lip 63 of the outersole assembly 22. Here again, the pressure from gluing the secondfitting element 42 in thefirst element 41 is low, even very low. The constituent materials of theenvelope 46 and of the second sole 47 are preserved, their structure remaining the same everywhere. - The thickness t2 of the
second envelope 46, measured in the area of thestitching 48, ranges between 90% and 100% of this same thickness t2 when measured in the area of the top 75 of thelip 63. Here again, in the area of thestitching 48 the thickness t2, in different respective embodiments, the thickness t2 can range between 50% and 100% of the thickness t2 in the area of the top 75 of thelip 63. - For certain applications, the
second envelope 46 is provided to include a waterproof layer or membrane, and thesecond strobel 47 is also provided to include a waterproof layer or membrane. Thus, in this case, the secondfitting element 42 is a slipper, or sock liner, which is impervious or very resistant to water penetration. It is advantageous to cover thestitching 48 with a waterproof strip of material glued to both thesecond envelope 46 and the sole 47. Such a strip renders thestitching 48 impervious by blocking the passage holes for the threads of the stitching. Waterproofness can be obtained by other means, such as a direct application of a covering material, or the positioning of a waterproof extra sole. - A second embodiment of the invention is summarily shown in
FIG. 8 . Only the differences with respect to the first embodiment are shown. - According to this second embodiment, a
shoe 81 includes an outersole assembly 82 and an upper 83. What is specific to thisshoe 81 is that the upper 83 is a low upper, in the sense that it includes alower portion 90, excluding any upper portion. In other words, theupper end 92, or collar, of thelower portion 90 is below the area of the ankle when theshoe 81 is worn. Theshoe 81 is consequently well-adapted for walking or running. - The article of footwear according to the invention can be made from materials and according to implementation techniques and methods known to those of ordinary skill in the art of footwear and footwear manufacturing.
- The invention is not limited to the particular embodiments herein described and illustrated, and includes all of the technical equivalents that fall within the scope of the claims that follow.
- In particular, one can provide to add one or more fitting elements. Thus, the shoe can include a third fitting element.
- One can also provide to leave a free space between two fitting elements. This space could be naturally filled with air, and used as a heat insulator. Alternatively, the space can be filled with other insulating materials.
- In addition, the invention illustratively disclosed herein suitably may be practiced in the absence of any element which is not specifically disclosed herein.
Claims (25)
1. An article of footwear comprising:
an outer sole assembly;
an upper;
a length extending from a rear end to a front end;
a width extending between a lateral side and a medial side;
a height extending from the outer sole assembly to an upper end;
a first fitting element comprising:
a first envelope;
a first strobel sole;
a connection affixing the first envelope to the first strobel sole comprising a first stitching of a first strobel construction;
a second fitting element comprising:
a second envelope;
a second strobel sole;
a connection affixing the second envelope to the second strobel sole comprising a second stitching of a second strobel construction.
2. An article of footwear according to claim 1 , wherein:
the first stitching extends over an entirety of a junction between the first envelope and the first strobel sole.
3. An article of footwear according to claim 1 , wherein:
the second stitching extends over an entirety of a junction between the second envelope and the second sole.
4. An article of footwear according to claim 1 , wherein:
the first envelope has a thickness substantially constant in an area of a junction between the first envelope and the first strobel sole.
5. An article of footwear according to claim 1 , wherein:
the second envelope has a thickness substantially constant in an area of a junction between the second envelope and the second strobel sole.
6. An article of footwear according to claim 1 , wherein:
the first strobel sole has a flexibility substantially equal to a flexibility of the second strobel sole.
7. An article of footwear according to claim 1 , wherein:
the second envelope includes a waterproof membrane;
the second strobel sole includes a waterproof membrane.
8. An article of footwear according to claim 1 , wherein:
an adhesive affixes the second strobel sole to the first strobel sole.
9. An article of footwear according to claim 1 , wherein:
an adhesive affixes the first fitting element to the outer sole assembly.
10. An article of footwear according to claim 1 , wherein:
the first strobel sole comprises:
a front end, a medial side, a rear end, and a lateral side;
a periphery extending through the front end, the medial side, the rear end, and the lateral side;
the first stitching extends around an entirety of the periphery of the first strobel sole.
11. An article of footwear according to claim 1 , wherein:
the second strobel sole comprises:
a front end, a medial side, a rear end, and a lateral side;
a periphery extending through the front end, the medial side, the rear end, and the lateral side;
the second stitching extends around an entirety of the periphery of the second strobel sole.
12. An article of footwear according to claim 10 , wherein:
the second strobel sole comprises:
a front end, a medial side, a rear end, and a lateral side;
a periphery extending through the front end, the medial side, the rear end, and the lateral side;
the second stitching extends around an entirety of the periphery of the second strobel sole.
13. An article of footwear according to claim 1 , wherein:
the first envelope includes a medial side and a lateral side;
the first stitching affixes the first strobel sole at least to the medial and lateral sides of the first envelope.
14. An article of footwear according to claim 1 , wherein:
the second envelope includes a medial side and a lateral side;
the second stitching affixes the second strobel sole at least to the medial and lateral sides of the second envelope.
15. An article of footwear according to claim 13 , wherein:
the second envelope includes a medial side and a lateral side;
the second stitching affixes the second strobel sole at least to the medial and lateral sides of the second envelope.
16. An article of footwear according to claim 1 , wherein:
the first stitching connecting together only the first envelope and the first strobel sole.
17. An article of footwear according to claim 1 , wherein:
the second stitching connecting together only the second envelope and the first strobel sole.
18. An article of footwear according to claim 1 , wherein:
the first and second strobel soles form part of an inner sole assembly of the article of footwear.
19. An article of footwear according to claim 1 , wherein:
the second fitting element is contained within and lines the first fitting element;
each of the first and second fitting elements has a respective strobel construction.
20. An article of footwear according to claim 19 , wherein:
the second strobel sole is affixed to the first strobel sole.
21. A method of manufacturing an article of footwear, said method comprising:
making a first fitting element to include a first envelope, having a first thickness and a first strobel sole, said making comprising assembling the first envelope to the first strobel sole by stitching;
making a second fitting element to include a second envelope, having a second thickness, and a second strobel sole, said making a second fitting element comprising assembling the second envelope to the second strobel sole by stitching;
making an outer sole assembly;
affixing the second fitting element to the first fitting element and affixing the outer sole assembly to the first fitting element, so that the first thickness of the first envelope and/or the thickness of the second envelope, in an area of a junction with the outer sole assembly, ranges between 50% and 100% of a thickness away from said junction.
22. A method according to claim 21 , wherein:
said making of the first fitting element does not include heating of the first envelope or heating of the first strobel sole;
said making of the second fitting element does not include heating of the second envelope or heating of the second strobel sole.
23. A method according to claim 21 , wherein:
said making of the first fitting element does not include stretching of the first envelope or stretching of the first strobel sole;
said making of the second fitting element does not include stretching of the second envelope or stretching of the second strobel sole.
24. A method according to claim 21 , wherein:
said making a first fitting element comprises making the first fitting element to have a strobel construction;
said making a second fitting element comprises making the second fitting element to have a strobel construction.
25. A method according to claim 24 , wherein:
said affixing the second fitting element to the first fitting element comprises placing the second fitting element within the first fitting element and applying a permanent connection for permanent retention of the second fitting element in relation to the first fitting element.
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USD1007110S1 (en) | 2022-03-23 | 2023-12-12 | Mountain Origins Design LLC | Footwear |
USD1007825S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1007826S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1008611S1 (en) | 2022-03-23 | 2023-12-26 | Mountain Origins Design LLC | Footwear |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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USD1007110S1 (en) | 2022-03-23 | 2023-12-12 | Mountain Origins Design LLC | Footwear |
USD1007825S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1007826S1 (en) | 2022-03-23 | 2023-12-19 | Mountain Origins Design LLC | Footwear |
USD1008611S1 (en) | 2022-03-23 | 2023-12-26 | Mountain Origins Design LLC | Footwear |
Also Published As
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FR2952790B1 (en) | 2012-01-06 |
EP2329737B1 (en) | 2017-08-09 |
DE202010018344U1 (en) | 2015-10-12 |
CN106418877A (en) | 2017-02-22 |
US9072336B2 (en) | 2015-07-07 |
FR2952790A1 (en) | 2011-05-27 |
CA2722088C (en) | 2018-08-14 |
RU2558343C2 (en) | 2015-07-27 |
RU2010147678A (en) | 2012-05-27 |
EP2329737A1 (en) | 2011-06-08 |
US20110119956A1 (en) | 2011-05-26 |
CA2722088A1 (en) | 2011-05-23 |
CN102068079A (en) | 2011-05-25 |
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