EP2286686A1 - Capuchon de protection d'orteil et chaussure le comprenant - Google Patents

Capuchon de protection d'orteil et chaussure le comprenant Download PDF

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Publication number
EP2286686A1
EP2286686A1 EP09168387A EP09168387A EP2286686A1 EP 2286686 A1 EP2286686 A1 EP 2286686A1 EP 09168387 A EP09168387 A EP 09168387A EP 09168387 A EP09168387 A EP 09168387A EP 2286686 A1 EP2286686 A1 EP 2286686A1
Authority
EP
European Patent Office
Prior art keywords
toe cap
shoes
fillets
top wall
toe
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.)
Withdrawn
Application number
EP09168387A
Other languages
German (de)
English (en)
Inventor
Karl Peter kurth
Michael Grosbol
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.)
Mascot International A/S
Original Assignee
Mascot International A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mascot International A/S filed Critical Mascot International A/S
Priority to EP09168387A priority Critical patent/EP2286686A1/fr
Priority to EP09174685A priority patent/EP2298112A1/fr
Priority to AU2010212295A priority patent/AU2010212295B2/en
Priority to CA2713205A priority patent/CA2713205A1/fr
Priority to US12/859,960 priority patent/US20110185602A1/en
Priority to CN2010102602233A priority patent/CN101991244B/zh
Publication of EP2286686A1 publication Critical patent/EP2286686A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/081—Toe stiffeners
    • A43B23/086—Toe stiffeners made of impregnated fabrics, plastics or the like
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0009—Footwear characterised by the material made at least partially of alveolar or honeycomb material
    • 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
    • A43B3/0057—S-shaped

Definitions

  • the present invention relates to a toe protection cap.
  • the invention relates to a toe protection cap providing improved ventilation to the toes of the wearer without a necessity of taking a loss of the toe protection cap in mechanical resistance to impacts or pushes.
  • the invention also relates to footgear, e. g. safety shoes, protective shoes, occupation shoes, sports shoes, to name only a few without wanting to restrict the term, comprising such a toe protection cap as a means for preventing the toes of a wearer from being hit by impacts or pushes by tools, constructional materials, debris, pieces of sports equipment etc..
  • the human foot due to its adaptation to the erect movement of a human, is an anatomically and functionally highly complex part of the body. Even minor mechanical influences to the muscles or bones of the feet result into major discomfort or even pain, and a physical injury to the feet may even have the consequence that a person has to refrain from walking, and thereby loose the possibility of movement, for the time of completely healing the injury. Having these facts in view, the working environment always emphasized protecting the feet of workers reliably, for example by suitable shoes. Wearing safety shoes or safety boots is, hence, an obligatory requirement in many areas where a risk exists that the feet may be harmed, for example in the steel industry, building industry, in the gardening and landscaping fields, for firefighters and rescue service people as well as for soldiers.
  • Safety shoes usually are midheight footwear made of leather and/or rubber or other polymers as, for example, polyurethane or thermoplastic polyurethane. Safety boots reach a height sufficient for protecting the foot including a part of the lower leg; they are made, in most of the cases, either of leather or of rubber (where protection against water is needed).
  • the sole of safety shoes/boots usually has an exposed profile for preventing the wearer from slipping and is often made of a high strength material in order to give the person wearing the shoe/boot a safe stand.
  • additional strengthening and puncture-preventing materials as, for example, steel plates or hard polymer parts made of, for example, Kevlar R of ParaAmide R are incorporated into the soles of safety shoes or safety boots.
  • Safety shoes or safety boots are usually provided with a protective cap made of steel, aluminum or high-strength plastics at their forepart in order to protect the toes against injuries resulting from heavy objects falling down.
  • the document US-A 2005/0,144,809 discloses a composite-reinforced toe cap for a shoe, which includes multiple composite fiber reinforcement layers and a larger fiber layer laminated between and extending out from the composite fiber reinforcement layers.
  • the fiber layer is made of continuous strands.
  • the composite fiber reinforcement layers are made of fiber-reinforced plastic composite materials, are laminated on the fiber layer to form a pre-product toe cap.
  • a bonding coating is applied to the fiber layer that extends beyond the composite fiber reinforcement layer to form a binding.
  • the pre-product is cured and has a binding that can be sewn to the sole, upper or tongue of a shoe.
  • a metal toe cap for safety shoes which includes an arcuate peripheral wall that tapers forward, a top wall, and a bottom wall defining a rear opening for receiving the toes of a user.
  • the peripheral wall and the top wall are connected by an upper arcuate transition section having a thickness that increases toward the top wall such that the top wall has a thickness greater than that of the peripheral wall. The impact-resisting property of the top wall is thus improved.
  • the invention relates to a toe cap for shoes comprising an arcuate peripheral wall capable of covering the front part and the two side parts of the toe cap, a top wall and a bottom wall capable of covering the top and bottom parts, respectively, of the toe cap and being connected to said arcuate peripheral wall, said walls defining a rear opening for a user's toes to be accommodated in the space defined by said walls, wherein said top wall has a rearside edge having the shape of a letter "S" thereby allowing a protection of all toes of a user.
  • the invention also relates to shoes comprising a toe cap of the invention as described below in detail.
  • shoes may be safety shoes, protective shoes, occupation shoes, sports shoes, to name only a few of shoes wherein the toe cap of the invention may be used, without, however, restricting the invention to those shoes.
  • Toe caps are usually made of plastics or of a metal or metal alloy and are mounted in a front end of a shoe, for example of a safety shoe, to withstand external impact and thereby protect particularly the forefeet, i. e. the toes of a foot of a user of the shoe.
  • the toe cap 1 of the invention comprises a peripheral wall 3 which is formed arcuate and which is capable of covering the front part 3a and the two side parts (left hand and right hand side parts) 3b, 3c of the toe cap 1.
  • the toe cap further comprises a top wall 5 and a bottom wall 7 which are capable of covering the top part 5a and the bottom part 7a of the toe cap 1.
  • the top and bottom walls 5, 7 are connected to the arcuate peripheral wall 3 integrally so as to form the toe cap 1.
  • the rearside edge 5b of the top wall 5, and preferably also the rearside edge of the bottom wall has the shape of a letter "S", which shape may be easily seen from Figures 1 and 2 .
  • the major advantage of such a shape similar to the letter "S" is the complete accommodation of all toes of one foot of the user wearing the shoe with the toe cap 1 of the invention within the toe cap in a convenient and non-restricted manner, in contrast to the prior art, where mainly the large toes were sufficiently protected, while the small toes were not.
  • the toe cap 1 may be constructed not to have any holes at the top wall 5, as can be seen, for example, from Figure 2 .
  • the toe cap 1 is provided with a top wall 5 having at least one hole 5c, preferably having a number of holes 5c, even more preferably having a number of holes 5c distributed throughout the whole surface of the top wall 5 either regularly or irregularly.
  • the term "regularly”, as used in the description and claims is intended to mean that the holes have a substantially identical distance to the next-neighboring hole(s) throughout the top wall 5 of the toe cap 1.
  • a (partly or completely) irregular distribution of the holes means that the distances of one hole to the next-neighboring hole(s) may be more or less (or at least partly) different.
  • a regular distribution of the holes 5c is preferred.
  • Such hole or holes 5c may serve a ventilation of the toe area of the foot of the user wearing the shoe including the toe cap 1.
  • Such a ventilation not only improves the convenience of wearing such a shoe with a toe protection cap 1, but also prevents an accumulation of sweat and/or humidity in the inner space of the toe cap 1. The latter may prevent the generation of bad smells due to a growth of smell-generating bacteria and the occurrence of diseases at the foot or, specifically, at the toes.
  • the fillets 5d around the hole(s) 5c the toe cap material loss, by the holes 5c, is compensated, and a strengthening effect is obtained.
  • the impact strength of the toe cap 1 is not deteriorated by providing the ventilation holes 5c.
  • said fillets 5d around the holes 5c in the toe cap top wall surface form a hexagon around the hole 5c or around each hole 5c. More preferably, the hole is located in the middle of the fillet hexagon, which position provides a particular strength to the top wall 5.
  • said hexagons form a honeycomb structure at the top wall surface of the toe cap 1.
  • Such a honeycomb structure is capable of strengthening the toe cap against impacts despite the provision of ventilation holes in the top wall surface of the toe cap 1.
  • the same strength as in conventional toe caps can be obtained by providing the honeycomb structure of fillets 5d around each ventilation hole(s) 5c.
  • said top wall surface has additional fillets 5e extending from one point, especially from one hole, radially over the surface of the top wall 5.
  • additional fillets 5e may extend over the whole surface of the top wall 5 of the toe cap 1, and they extend preferably in a straight manner from one hole over the top wall surface, as can best be seen in Figures 1 , 2 and 3 .
  • straight fillets 5e the toe cap structure may be strengthened additionally.
  • the arcuate peripheral wall 3 may be provided with strengthening fillets 3d on its inside, i. e. on the side directed to the inner space of the toe cap 1 directed to the toes of the wearer.
  • additional fillets which may extend in the direction between the top and bottom walls 5, 7, of the toe cap 1
  • the strength of the toe cap 1 may be improved.
  • a toe cap 1 without such fillets 3d is preferred.
  • Omitting material, and thereby making the toe cap of the invention loose weight (which weight loss may be preferred for reasons of convenience of wearing the low weight toe cap 1), can be achieved, in accordance with another preferred embodiment of the invention, by an embodiment wherein said bottom wall 7 is formed of a fillet 7b extending along the connection of the bottom wall 7 to the peripheral wall 3, and continuing at the rear side edge into a fillet 7c having the shape of a letter "S" and extending in parallel to the corresponding edge of the top wall 5, said filets 7b, 7c being bridged by at least one further strengthening fillet 7d. There may be provided two or even more further strengthening fillets 7d, but one additional strengthening fillet is particularly preferred.
  • the overall weight of the toe cap 1 may be reduced, without taking a loss of impact strength.
  • bottom wall fillets 7b, 7c, 7d are provided with strengthening fillets 7e over their whole surface.
  • strengthening fillets 7e may be of any conceivable type, but preferably said bottom wall fillets 7b, 7c, 7d are provided with honeycomb structure fillets 7e, even more preferred over their whole surface.
  • the impact strength of the toe cap 1 is improved further.
  • the material for toe caps 1 of the present invention may be selected by a skilled person in accordance with material selections made in the prior art, and the material may be adapted to the specific requirements in each single case.
  • a material may be used for manufacturing the toe caps 1 of the present invention which is selected from the group consisting of plastics, for example hard polymer materials like those used in the prior art, e. g. Kevlar R or ParaAmide R (if a particular elasticity is required or desired, without giving up impact resistance / impact strength), reinforced plastics (e.g.
  • fiber-reinforced plastics glass fiber-reinforced or carbon fiber-reinforced or metal or metal oxide or metal boride or metal carbide or metal nitride whiskers-reinforced
  • metal powder-reinforced plastics metal(s) or metal alloys.
  • metals or metal alloys e. g. aluminum or steel, or fiber-reinforced plastics.
  • reinforcing fibers for polymers of the plastics material such fibers known from the prior art to achieve a plastics reinforcement may be used without restriction.
  • Glass fibers, carbon fibers or whiskers made of metals, metal oxides, metal borides, metal carbides or metal nitrides or their mixtures are preferably used, and glass fibers and carbon fibers are particularly preferred. Even more preferably, in one exemplary and preferred embodiment of the invention, PA-6 (polyamide-6) may be used as the plastics material.
  • steel e. g. (without restriction) steel 8620 (e. g. of BASF AG) or steel 1050 SAE
  • steel 1050 SAE e. g. of BASF AG
  • a sheet of a metal or of a metal alloy for example a steel sheet
  • a punched steel sheet is then deep-drawn or deep-pressed to obtain an integral body of the toe cap 1 of the invention.
  • Such an integral body may then be subjected to further process steps, as for example polishing steps and steps of applying a surface coating, so as to obtain the final toe cap body.
  • the so-called MIM (metal injection molding) process is used for manufacturing the toe caps 1 of the invention.
  • MIM metal injection molding
  • a powder of the metal used as the material for the toe cap 1 is comminuted to a stage as fine as necessary (e. g. to metal particles having a size in the range of between 0.1 and 10 ⁇ m) and is admixed with suitable binders (e.g. waxes and/or polymers and/or cracking catalysts and/or solvents).
  • suitable binders e.g. waxes and/or polymers and/or cracking catalysts and/or solvents.
  • a mixture containing 60 to 80 % by weight of metal e. g.
  • Such a mixture may be processed on conventional injection molding machines.
  • a green body of the mixture used for injection molding is prepared.
  • the green body is heated stepwise to temperatures in the range of, for example, 100 to 600 °C, so as to thermally crack the binders (wax(es), polymer(s), catalyst(s), solvent(s)).
  • a body of metal powder is obtained (so-called "brown body”).
  • the brown body thus obtained is now sintered under controlled temperature/gas conditions (e. g.
  • a body now having, for example, > 96 % of the final density is obtained by such a sintering step.
  • the surface of such a sintered body may be subjected to further processing steps as, for example, polishing steps and steps of applying a surface coating, so as to obtain the final toe cap body.
  • plastics materials comprising one type or several types of fibers (as defined above) may, for example, be manufactures by a usual injection molding process, as is well known to a person skilled in this technical field. Hence, the detailed description of the steps of such an injection molding process, its components and its conditions may be omitted here since they are known to a person in this technical field.
  • a toe cap 1 is inserted into a shoe in order to protect the shoe wearer's toes against impacts.
  • impacts may be impacts due to the work of a tool used by the wearer or by anybody else in his/her environment, may be impacts by heavy things falling down, may be constructional materials, debris, pieces of sports equipment etc..
  • the invention also relates to shoes comprising a toe cap 1 as described above in detail.
  • Such shoes may be safety shoes, protective shoes, occupation shoes, sports shoes, to name only a few of shoes wherein the toe cap of the invention may be used, without, however, restricting the invention to those shoes.
  • the European Union such shoes are standardized, with respect to requirements they have to fulfill, in the industrial standards ISO EN 20345
  • Shoes provided with the toe caps 1 of the invention were tested first with respect to their strength to withstand to impacts by a heavy test object falling down on the shoe provided with the toe cap or to impacts by a tool swinging to the side of the toe cap, and were tested secondly with respect to the "foot climate" in the toe region due to a better ventilation of said region.
  • the tests were conducted in accordance with standardized test methods.
  • the "foot climate” was found to be much better than in shoes having conventional toe caps, due to the fact that sweat and humidity could escape from the toe region and could not accumulate in that area. Hence, bad smells and diseases due to the action of microorganisms in the toe area could be prevented from occurring.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP09168387A 2009-08-21 2009-08-21 Capuchon de protection d'orteil et chaussure le comprenant Withdrawn EP2286686A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP09168387A EP2286686A1 (fr) 2009-08-21 2009-08-21 Capuchon de protection d'orteil et chaussure le comprenant
EP09174685A EP2298112A1 (fr) 2009-08-21 2009-10-30 Coque de protection d'orteil et chaussure le comprenant
AU2010212295A AU2010212295B2 (en) 2009-08-21 2010-08-12 Toe Protection Cap And Footgear Comprising Toe Protection Cap
CA2713205A CA2713205A1 (fr) 2009-08-21 2010-08-17 Protege-orteil et article chaussant le comportant
US12/859,960 US20110185602A1 (en) 2009-08-21 2010-08-20 Toe protection cap and footgear comprising toe protection cap
CN2010102602233A CN101991244B (zh) 2009-08-21 2010-08-20 脚趾保护鞋头和包括脚趾保护鞋头的鞋类

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09168387A EP2286686A1 (fr) 2009-08-21 2009-08-21 Capuchon de protection d'orteil et chaussure le comprenant

Publications (1)

Publication Number Publication Date
EP2286686A1 true EP2286686A1 (fr) 2011-02-23

Family

ID=41718455

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09168387A Withdrawn EP2286686A1 (fr) 2009-08-21 2009-08-21 Capuchon de protection d'orteil et chaussure le comprenant
EP09174685A Withdrawn EP2298112A1 (fr) 2009-08-21 2009-10-30 Coque de protection d'orteil et chaussure le comprenant

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09174685A Withdrawn EP2298112A1 (fr) 2009-08-21 2009-10-30 Coque de protection d'orteil et chaussure le comprenant

Country Status (5)

Country Link
US (1) US20110185602A1 (fr)
EP (2) EP2286686A1 (fr)
CN (1) CN101991244B (fr)
AU (1) AU2010212295B2 (fr)
CA (1) CA2713205A1 (fr)

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DE102022128872B3 (de) 2022-11-01 2023-10-12 Engelbert Strauss Gmbh & Co Kg Verfahren zur Herstellung einer Zehenkappe
DE102022005058A1 (de) 2022-11-01 2024-05-02 Engelbert Strauss Gmbh & Co Kg Zehenkappe

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CN103393251A (zh) * 2013-05-14 2013-11-20 吴江市董鑫塑料包装厂 一种隔热防刺穿劳保靴
CN103251169B (zh) * 2013-05-14 2016-03-16 吴江市风尚鞋厂 一种弹性气囊换气防刺穿劳保靴
CN103238978A (zh) * 2013-05-14 2013-08-14 吴江市董鑫塑料包装厂 一种具有抽风透气防刺穿功能的劳保靴
CN103239854A (zh) * 2013-05-14 2013-08-14 吴江市董鑫塑料包装厂 一种具有可折叠滑轮的防刺穿劳保靴
CN103300534A (zh) * 2013-05-14 2013-09-18 吴江市董鑫塑料包装厂 一种自动按摩防刺穿劳保靴
CN103238977A (zh) * 2013-05-14 2013-08-14 吴江市董鑫塑料包装厂 一种通风透气的防刺穿劳保靴
CN103404997A (zh) * 2013-05-14 2013-11-27 吴江市董鑫塑料包装厂 一种发光防刺穿劳保靴
CN103251167A (zh) * 2013-05-14 2013-08-21 吴江市董鑫塑料包装厂 一种储物防刺穿劳保靴
CN103704926A (zh) * 2013-05-14 2014-04-09 吴江市董鑫塑料包装厂 一种保暖防刺穿劳保靴
CN103230122A (zh) * 2013-05-14 2013-08-07 吴江市董鑫塑料包装厂 一种自发电源发光防刺穿劳保靴
CN103251168B (zh) * 2013-05-14 2016-03-16 吴江市风尚鞋厂 一种按摩防刺穿劳保靴
CN103284396A (zh) * 2013-05-14 2013-09-11 吴江市董鑫塑料包装厂 一种反光防刺穿劳保靴
CN103704934A (zh) * 2013-05-14 2014-04-09 吴江市董鑫塑料包装厂 一种高舒适防静电防刺穿劳保靴
CN103251165A (zh) * 2013-05-14 2013-08-21 吴江市董鑫塑料包装厂 一种防静电防刺穿劳保靴
CN103230121A (zh) * 2013-05-14 2013-08-07 吴江市董鑫塑料包装厂 一种加热保暖防刺穿劳保靴
CN103263114A (zh) * 2013-05-14 2013-08-28 吴江市董鑫塑料包装厂 一种具有工字导电体的防刺穿劳保靴
EP3027074A1 (fr) 2013-08-02 2016-06-08 Universidade do Minho Embout protecteur métallique pour chaussures de sécurité
US9668544B2 (en) 2014-12-10 2017-06-06 Nike, Inc. Last system for articles with braided components
FR3032868B1 (fr) * 2015-02-24 2019-06-14 Lionel Soulier Structure et composition d'un embout de protection non metallique pour chaussure de securite
EP3257391A1 (fr) 2016-06-16 2017-12-20 Soulier, Joël Embout de protection non métallique
US10856605B2 (en) * 2017-01-26 2020-12-08 Tingley Rubber Corporation Polyvinyl chloride safety boots
US10104932B2 (en) * 2017-02-01 2018-10-23 Ziben Safety Co., Ltd. Safety shoes with a ventilation structure
EP4005426A1 (fr) 2017-03-17 2022-06-01 Nike Innovate C.V. Partie orteils destinée à une chaussure d'athlétisme
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US11684114B2 (en) * 2020-10-23 2023-06-27 Tbl Licensing Llc Strain-hardened safety toe for footwear
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Publication number Priority date Publication date Assignee Title
DE102022128872B3 (de) 2022-11-01 2023-10-12 Engelbert Strauss Gmbh & Co Kg Verfahren zur Herstellung einer Zehenkappe
DE102022005058A1 (de) 2022-11-01 2024-05-02 Engelbert Strauss Gmbh & Co Kg Zehenkappe

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US20110185602A1 (en) 2011-08-04
CN101991244B (zh) 2012-08-29
EP2298112A1 (fr) 2011-03-23
CN101991244A (zh) 2011-03-30
AU2010212295A1 (en) 2011-03-10
CA2713205A1 (fr) 2011-02-21
AU2010212295B2 (en) 2013-01-24

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