Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B3/00—Footwear characterised by the shape or the use
  • A43B3/0036—Footwear characterised by the shape or the use characterised by a special shape or design
  • A43B3/0042—Footwear characterised by the shape or the use characterised by a special shape or design with circular or circle shaped parts
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
  • A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
  • A43B13/12—Soles with several layers of different materials
  • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
  • A43B13/127—Soles with several layers of different materials characterised by the midsole or middle layer the midsole being multilayer
• • 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
  • A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
  • A43B13/188—Differential cushioning regions
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
  • A43B17/10—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined specially adapted for sweaty feet; waterproof
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means

Definitions

• the present invention relates to a puncture resistant sole for high comfort shoe. More specifically, the present invention relates to a puncture resistant sole for shoe which ensures the user a feeling of high well-being and comfort even for a long time.
• Shock-absorbing soles of the known type nowadays typically comprise a midsole in elastically yielding material, generally made of polyurethane or even in EVA (ethyl vinyl acetate), which is arranged for example under the entire sole of the foot or even only in the area most stressed during the impact on the ground, i.e. the rear foot or heel area.
• EVA ethyl vinyl acetate
• Some other types of known shoes typically sports shoes, also include additional shock-absorbing elements such as air cushions or the like, mainly located in the heel area.
• shock-absorbing soles of the known type undoubtedly have a good elastic behavior during the impact of the foot on the ground, but, especially in the case of prolonged use, they prove to be uncomfortable since they carry out a limited soft damping of the impact, which results in a feeling of stiffness under the foot.
• the reduced flexibility of the elastic elements such as the polyurethane midsole, which must still have a given thickness, or of the air cushions also contributes to this feeling of stiffness.
• shoes with known type shock absorbing soles are not able to ensure an effective ventilating action inside the shoe: this problem is also critical in the case of prolonged use, especially in situations of high foot sweating in hot seasons.
• this problem is also critical in the case of prolonged use, especially in situations of high foot sweating in hot seasons.
• the sole may be subject to possible lacerations, tears or perforations, without adequate protection, in addition to the risk of breaking the shoe, even a risk to the safety of the worker occurs.
• the technical task of the present invention is to improve the state of the art in the shoe field, by developing a sole for shoe suitable for ensuring the user, in addition to a feeling of comfort and softness when resting on the ground, also the puncture resistance of the shoe employed during walking, running and working activities, thus including both the case in which the shoe is used in a static upright position and while moving, especially in the case of prolonged use.
• Another object of the present invention is to provide a sole for shoe capable of achieving a certain internal circulation of air, so as to favor the transpiration of the foot.
• FIG. 1 is a section, taken according to a longitudinal plane, of a shoe according to the present invention equipped with a sole according to the present invention in conditions of rest or not in use;
• - figure 2 is a view similar to figure 1 in conditions of use or worn by a user;
• - figure 3 is an exploded perspective view of a shoe according to the present invention with a sole according to the present invention.
• a puncture resistant sole according to the present invention for a shoe S with high comfort in accordance with the present invention is generally designated with the reference numeral 1.
• the sole according to the present invention can be used to make various types of shoe, for example sports or leisure shoes, for men, women or children, but also other types of shoe, for example those for work, without any limitation to the purposes of the present invention.
• the shoe S comprises an upper U of any known type, illustrated in the figures for greater clarity of description.
• the upper U can be, for example, of the type for sports or leisure shoe, for classic shoe, for work or others.
• the upper U can be made of any material or combination of materials of a type known in the shoe production field, without any limitations.
• the upper U is fixed to the sole 1 according to methods known in the field, for example by sewing, gluing, or with other known techniques.
• the sole 1 comprises, as the main load-bearing structural element, a midsole 2.
• the midsole 2 can be made of polyurethane foam or another suitable material.
• This material known to be used in the shoe manufacturing field, is characterized by a low specific weight and excellent elasticity characteristics.
• the midsole 2 comprises a main portion, if desired substantially flat 6, with an extension substantially equal to that of the sole of the foot.
• the substantially flat portion 6 of the midsole 2 can have a thickness relatively reduced with respect to the thickness usually adopted and in any case significantly lower than that of the midsoles of known soles; thus, for example, according to the present invention, the substantially flat portion 6 can have a thickness between 4 and 6 mm. Therefore, the midsole 6 obtains, when compared to the midsoles used in state-of- the-art soles, less weight and volume and, consequently, a greater overall lightness.
• the midsole 2 also comprises a perimeter edge, which is preferably annular 8, that extends, in use, upwards from the perimeter of the main or substantially flat portion 6 and defining with the latter or better with the internal surface 6a thereof an upper housing 10.
• the substantially flat portion 6 and the perimeter edge 8 are conveniently made in a single piece, but could also be made in separate parts and then fixed to each other with methods known in the field.
• the sole 1 then comprises a stabilizing and shock-absorbing insert 14, facing, in use, towards the sole of the foot and elastically yielding and compressible under the weight of the user.
• the insert 14 provides a rear portion with a shape substantially similar to that of the puncture resistant sheet 4 and of the footbed 24 (which will be discussed later), whereas the insert, for example, at a length corresponding to approximately 3/4 of the total extension of the sole 1 has a tip with a sectioned shape, so that between no tip of the insert 14 is interposed between the tip of the puncture resistant sheet 4 and the tip of the footbed 24.
• a puncture resistant sheet 4 is then provided in the sole 1, which is inserted in the housing 10 above the insert 14.
• the puncture resistant sheet 4 actually interposed between the insert 14 and the midsole 2, is arranged so as not to be directly in contact with the foot, thereby not affecting the comfort of the sole 1.
• the puncture resistant sheet 4 is made, for example, of composite material. If desired, it has a substantially constant thickness, for example between 3 and 6 mm.
• the housing 10 comprises a main zone 10b and a groove 10a recessed with respect to the main zone 10b, which groove 10a is provided at the base or on the bottom of the housing 10.
• the puncture resistant sheet 4 is perimetrically fitted in the groove 10a.
• the sheet 4 preferably extends from the front F to the rear R of the sole 1 and for a width such as to support from below an overhanging foot of a user.
• the shock-absorbing and/or stabilizing insert 14 delimits through holes 16, if desired with a substantially cylindrical shape, for example with a diameter between 5 and 8 mm, which are necessary for the ventilation of the foot and have a different density for cushioning the foot.
• the holes 16 can be provided in the forefoot area and/or in the midfoot area and/or in the rear foot area.
• the shock-absorbing and/or stabilizing insert 14 can be provided with a perimeter surface 18 which is substantially complementary with the perimeter edge 8 of the midsole 2. Therefore, in substance, the insert 14 matches at least partially with the perimeter edge 8 of the midsole. 2.
• the perimeter surface 18 matches the perimeter edge 8 of the midsole 2 in the midfoot and rear foot area.
• the shock-absorbing and/or stabilizing insert 14 has a thickness which substantially corresponds to the height of the perimeter edge 8 of the midsole 2 added to the thickness of the puncture resistant sheet 4, so that once the sheet 4 and insert 14 have been inserted, the upper, in use, surface 14a of the insert 14 constitutes a substantially regular surface on which the sole of the foot can rest, if desired flush with the upper end of the perimeter edge 8.
• the shock-absorbing and/or stabilizing insert 14 is made of light and yielding material, particularly suited to dampen the impact of the foot on the ground.
• the shock-absorbing and/or stabilizing insert 14 is made, for example, of material such as polyurethane foam or ethyl vinyl acetate, or other lightweight material with equivalent mechanical characteristics.
• the sole 1 according to the invention can further comprise an inner insole 20, if desired equipped with shock-absorbing cushion elements 22.
• the inner insole 20, of the type per se known in the field, is made, for example, of highly hydrophilic polyester material, or in another suitable material that absorbs moisture and keeps the foot dry.
• the shock-absorbing cushion elements 22 are arranged or fitted in the main body of the inner insole 20, if desired, they are overmoulded by means of the material of obtainment of this main body.
• the shock-absorbing cushion elements 22 are preferably provided in the midfoot region and/or in the rearfoot region.
• a shock-absorbing cushion element 22 can be provided one in the midfoot region and one in the rearfoot region.
• These elements 22 can be made of softer material which acts as a shock absorber, while the main body of the insole 20 is made of a more rigid material for ensuring it to be thermoformed.
• the insole 20 can also be equipped with ventilation holes 26a, if desired in the forefoot.
• the insole 20, if provided, is arranged above the puncture resistant sheet 4.
• the insole 20 can be arranged on the other components of the sole or constrained, for example glued or stitched, thereto.
• the sole 1 according to the invention can also comprise a footbed 24, if desired of the activated carbon type, equipped with ventilation holes 26b, with a sanitizing function, i.e. antifungal, antibacterial, transpiring.
• a sanitizing function i.e. antifungal, antibacterial, transpiring.
• the footbed 24, if provided, is interposed between the shock-absorbing and/or stabilizing insert 14 and the inner insole 20.
• the sole 1 according to the invention can also comprise an external tread component 28, which is fixed, if desired glued, to the lower surface of the midsole 2.
• the tread 28 is of the type per se known in the field, made of non-slip and highly wear-resistant material, such as rubber and the like.
• the upper U may or may not be open at the bottom.
• Figure 1 shows in section a shoe S - comprising the sole 1 according to the present invention - not worn, and thus free from any load by the user.
• Figure 2 shows the shoe S worn by the user, i.e. subjected to the load of the foot F and suitably deformed.
• the element 14 therefore acts as a real shock absorber that absorbs the impulsive load of the impact of the foot F on the ground, and which, once the foot is raised F, quickly returns to the initial configuration, i.e. the one shown in figure 1.
• the shock-absorbing and/or stabilizing insert 14 exerts an action to dampen the impact of the foot on the ground, in this way the sole 1 according to the invention is able to provide an optimal and comfortable dynamic response to the impact of the foot F on the ground while walking.
• element 14 owing to its elastic compressibility, relieves the feelings of discomfort due to a prolonged load.
• Another interesting and advantageous effect obtainable owing to the sole 1 according to the present invention is a ventilation action inside the shoe S.
• the cyclic compression and release action of the element 14 during walking determines a sort of pumping effect inside the shoe S, which, in turn, determines a given circulation of air, which thus does not stagnate and promotes foot perspiration.
• the air is free to move also thanks to the highly hydrophilic component and the ventilation holes 26a, 26b of the insole 20 and of the footbed 24, respectively, which holes define passageways.
• the sole according to the invention makes it possible to increase the sensation of comfort felt by the user during walking with respect to known soles, since it provides an elastic support for the load of the foot owing to the widespread damping action of the shock-absorbing insert and/or stabilizer 14.

Applications Claiming Priority (2)

Publications (1)

Family

ID=74285524

Family Applications (1)

Country Status (2)

Citations (7)

• 2019
  • 2019-12-19 IT IT202019000004690U patent/IT201900004690U1/it unknown
• 2020
  • 2020-12-14 WO PCT/IB2020/061888 patent/WO2021124068A1/en active Application Filing

Patent Citations (7)

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