EP1776885A1 - Sicherheitsschuh - Google Patents

Sicherheitsschuh Download PDF

Info

Publication number
EP1776885A1
EP1776885A1 EP05023057A EP05023057A EP1776885A1 EP 1776885 A1 EP1776885 A1 EP 1776885A1 EP 05023057 A EP05023057 A EP 05023057A EP 05023057 A EP05023057 A EP 05023057A EP 1776885 A1 EP1776885 A1 EP 1776885A1
Authority
EP
European Patent Office
Prior art keywords
cap
toe
thickness
footwear
cover portion
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Withdrawn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
EP05023057A
Other languages
English (en)
French (fr)
Inventor
Jasper Coyle
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.)
ADVANCED STEEL ENGINEERING Ltd
Original Assignee
ADVANCED STEEL ENGINEERING Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ADVANCED STEEL ENGINEERING Ltd filed Critical ADVANCED STEEL ENGINEERING Ltd
Priority to EP05023057A priority Critical patent/EP1776885A1/de
Publication of EP1776885A1 publication Critical patent/EP1776885A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • A43B23/082—Toe stiffeners made of metal
    • A43B23/083—Toe stiffeners made of metal light-alloys
    • 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
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means

Definitions

  • the present invention refers, in its most general aspect, to a accident prevention footwear.
  • the invention refers to a accident prevention footwear of the type comprising a sole and a upper, at a front part of said footwear a substantially hull-shaped toe-cap being provided, in which a substantially planar base portion and a substantially vault-shaped cover portion are defined, connected together by a lateral portion.
  • the invention also refers to a safety toe-cap for a accident prevention footwear.
  • footwear safety toe-caps are well known that are arranged on the front part of the footwear itself, so as to satisfy the requirement of protecting the phalanges of the foot of an operator wearing it, for example in the case of an object accidentally falling onto the foot, or - more generally - in the case of any occurrence that can subject the tip of the foot to high compression.
  • safety toe-caps of the accident prevention footwear must meet specific mechanical strength requirements, according to a whole series of international standards, nowadays well-established, which indicate - amongst other things - the values of compression resistance and of resistance to the impact energy that the aforementioned toe-caps must withstand in order to be able to be approved.
  • the aforementioned safety toe-caps are generally made from steel.
  • cold molded steel from a deep-drawn metal sheet is used, which is characterized by a good compromise between characteristics of cost-effectiveness and of mechanical strength.
  • the safety toe-caps are made from die-cast aluminum.
  • safety toe-caps made from plastic polymers, preferably obtained by injection moulding.
  • the accident prevention footwear with safety toe-cap made from plastic polymers has the drawback that such a toe-cap, even if it does not disturb the magnetic fields created by possible electromagnetic sensors, must be made with very high thicknesses to withstand the mechanical strength tests and also has a limited use temperature, which limits its use in many cases.
  • the technical problem forming the basis of the present invention is that of devising and providing a accident prevention footwear of the type considered above, which is particularly light and that can be used in most industrial environments, and which at the same time is able to overcome the quoted drawbacks with reference to the prior art in a simple and effective manner.
  • a accident prevention footwear of the type comprising a sole and a upper, at a front part of said footwear a substantially hull-shaped safety toe-cap being provided, in which a substantially planar base portion and a substantially vault-shaped cover portion are defined, connected together by a lateral portion, characterized in that said safety toe-cap is made at least partially from a magnesium metal alloy, in which the magnesium is present in a percentage between 92,5% and 98%.
  • the magnesium percentage is between 94% and 96%.
  • the accident prevention footwear 10 comprises a sole 12 and a upper 14, at a front part of said footwear 10, and inside it, a substantially hull-shaped safety toe-cap 16 being provided.
  • a substantially planar base portion 18, juxtaposing a front end 12a of said sole 12, and a substantially vault-shaped cover portion 24, arranged substantially below a front end 14a of said upper 14, in contact with it, are defined.
  • the two aforementioned portions 18 and 24 are connected together by a side portion 22, comprising opposite walls.
  • an insole 13 is also shown that is arranged above the base portion 18 and, in part, above the sole 12.
  • the base portion 18 is substantially circular half-crown shaped, in which an outer half-circumference 18a and an inner half-circumference 18b are substantially defined.
  • the side portion 22 extends, substantially perpendicular to the base portion 18, for a determined height going from the outer half-circumference 18a.
  • the cover portion 24, in the illustrated example, is shaped substantially like a spherical cap portion, is arranged above the side portion 22, has overall dimensions, in plan, substantially equal to that of the side portion 22, and extends from an upper half-circumferential end of the side portion 22 in such a way as to be positioned above said substantially planar portion 18, at a height substantially equal to said determined height of the side portion 22.
  • such a safety toe-cap 16 is at least partially made from a magnesium metal alloy, in which the magnesium is present in a percentage of between 92.5% and 98%. Preferably, the magnesium percentage is between 94% and 96%.
  • alloys that can advantageously be used are alloys known - according to the ASTM standard - as AM20, AM50 and AM60.
  • a first embodiment of the toe-cap 16 is shown in figures 3a and 3b.
  • a synthetic fiber-based element 26 is glued below a determined zone of the cover portion 24.
  • synthetic fiber that can advantageously be used is Kevlar®, trademark registered by Du Pont de Nemours International SA. More generally, aramidic fibers, carbon fibers, glass fibers, polyester or polyamide fibers can be used.
  • bonding agents that can advantageously be used to glue the element 26 are epoxy, acrylic, cyanoacrylic, phenolic and polyurethane bonding agents.
  • the element 26 is substantially parallelepiped, flattened shape and is applied in the highest zone of the cover portion 24.
  • the synthetic fiber-based element is glued above a determined zone of the cover portion 24.
  • two or more synthetic fiber-based elements are glued to the cover portion 24, for example one below and one above the cover portion 24.
  • FIG. 4a A second embodiment of the toe-cap is shown in figures 4a and 4b, this toe-cap being wholly indicated with 116.
  • the same reference numerals are attributed and they are not described any further.
  • said side portion 22 has a greater thickness than the substantially uniform thickness of said cover portion 24.
  • the thickness of the side portion 22 is more than about two times with respect to the thickness of the cover portion 24: indeed, it has surprisingly been noted that with such thicknesses the cover portion 24 is able to deform without breaking in the mechanical test of resistance to the impact energy.
  • the substantially planar portion 18 has a thickness substantially equal to that of the side portion 22.
  • FIG. 5a and 5b A third embodiment of the toe-cap is shown in figures 5a and 5b, this toe-cap being wholly indicated with 216.
  • the same reference numerals are attributed and they are not described any further.
  • This embodiment differs from the toe-cap 116 in that it provides a synthetic fiber-based element, glued to the cover portion 24, and that is indicated with 26 because it is of the same type as that indicated with 26 in figures 3a and 3b.
  • a synthetic fiber-based element glued to the cover portion 24, and that is indicated with 26 because it is of the same type as that indicated with 26 in figures 3a and 3b.
  • FIG. 6a A fourth embodiment of the toe-cap is shown in figures 6a and 6b, this toe-cap being wholly indicated with 316.
  • the same reference numerals are attributed and they are not described any further.
  • the side portion 22 has differentiated thicknesses in its substantially half-circumferential extension and to be precise the thickness of its tip section 316a, which is situated at the front end of the safety toe-cap 316 itself, is greater than the thickness of the remaining two side sections 316b of the side portion 22.
  • the thickness of the two side sections 316b is less than half the thickness of the tip section 316a.
  • the cover portion 24 and the substantially planar portion 18 have thicknesses substantially equal to that of the side sections 316b of the side portion 22. Basically, therefore, in this case, a part of said side portion 22, i.e. the tip section 316a, has a greater thickness than the substantially uniform thickness of said cover portion 24.
  • FIG. 7a A fifth embodiment of the toe-cap is shown in figures 7a, 7b and 7c, this toe-cap being wholly indicated with 416.
  • the same reference numerals are attributed and they are not described any further.
  • This embodiment differs from the toe-cap 316 in that it provides a synthetic fiber-based element, glued to the cover portion 24, and that is indicated with 26 because it is of the same type as that indicated with 26 in figures 3a and 3b.
  • a synthetic fiber-based element glued to the cover portion 24, and that is indicated with 26 because it is of the same type as that indicated with 26 in figures 3a and 3b.
  • FIG. 8a, 8b, 8c, 8d and 8e A sixth embodiment of the toe-cap is shown in figures 8a, 8b, 8c, 8d and 8e, this toe-cap being wholly indicated with 516.
  • the same reference numerals are attributed and they are not described any further.
  • This embodiment differs from the toe-cap 316 in that the cover portion 24, at least in its central area, has tapered thickness from the front end of the toe-cap 516, where it has thickness that is substantially equal to the thickness of the tip section 316a of the side portion 22, up to the fitting end 17 of the toe-cap 516 itself.
  • Figure 8b shows a transversal section of the toe-cap 516, in which it is pointed out the transversal profile of the thickness of the cover portion 24: in practice, the lower surface of the cover portion 24 comprises, in its central area, a substantially planar portion 530, said plane being convergent towards the upper surface of the cover portion 24 near the fitting end 17.
  • the tip section 316a has thickness that is greater than the thickness of said cover portion 24, but in this case the thickness of the cover portion is not uniform.
  • the toe-cap 516 may provide a synthetic fiber-based element, glued to the cover portion 24.
  • the characteristics of such an element and the gluing methods are the same that have been described previously in reference to the element 26 of the toe-cap 16 of the figures 3a and 3b.
  • a seventh embodiment of the toe-cap is shown in figure 9, this toe-cap being wholly indicated with 616.
  • the same reference numerals are attributed and they are not described any further.
  • the toe-cap 616 is structurally identical to any one of the aforementioned toe-caps 16, 116, 216, 316, 416 or 516, with the difference of also being coated, at least partially, with thermoplastic material 627.
  • the toe-cap 616 is overinjected with thermoplastic material 627.
  • the thermoplastic material 627 is cast to at least partially cover the toe-cap 616.
  • thermoplastic coating operation by injection or casting, a protection against the corrosion is advantageously obtained, which is required by the standards.
  • an edge 628 suitably shaped to fit together with the upper 14 of the footwear 10, so that it is no longer necessary to take care of manually applying a thermoplastic profile, through a self-adhesive , as occurs in the prior art.
  • the accident prevention footwear according to the invention solves the technical problem and achieves numerous advantages the first of which lies in the fact that the footwear, as well as satisfying all of the requirements of mechanical strength imposed by the specific standards, is unusually light, with the consequence of providing greater comfort for the operator, thus improving - all in all - the safety conditions.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP05023057A 2005-10-21 2005-10-21 Sicherheitsschuh Withdrawn EP1776885A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05023057A EP1776885A1 (de) 2005-10-21 2005-10-21 Sicherheitsschuh

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05023057A EP1776885A1 (de) 2005-10-21 2005-10-21 Sicherheitsschuh

Publications (1)

Publication Number Publication Date
EP1776885A1 true EP1776885A1 (de) 2007-04-25

Family

ID=35744916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05023057A Withdrawn EP1776885A1 (de) 2005-10-21 2005-10-21 Sicherheitsschuh

Country Status (1)

Country Link
EP (1) EP1776885A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795868A (en) * 1955-11-15 1957-06-18 Endicott Johnson Corp Liner for metal toe boxes
DE2340146A1 (de) * 1972-08-11 1974-02-28 Vandeputte Nv Schutzkappe fuer sicherheitsschuhe, insbesondere arbeitsschuhe
GB2022395A (en) * 1978-05-26 1979-12-19 Schiermeister & Junker Steel toe-cap for safety footwear
DE2935959A1 (de) * 1979-09-06 1981-04-02 Esjot-Werk Schiermeister U. Junker, 4763 Ense Stahlkappe mit sohlenseitigem boerdelrand fuer sicherheitsschuhwerk
JPH07177905A (ja) * 1993-12-24 1995-07-18 Nhk Spring Co Ltd 安全靴用先芯
DE29712881U1 (de) * 1997-07-21 1998-11-19 Haimerl, Ewald, 84048 Mainburg Schuh mit Schutzkappe
DE20219131U1 (de) * 2002-12-10 2003-04-17 Magnetech Gmbh Zehenschutzkappe aus Magnesium und dessen Legierungen für Arbeitsschutzschuhe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795868A (en) * 1955-11-15 1957-06-18 Endicott Johnson Corp Liner for metal toe boxes
DE2340146A1 (de) * 1972-08-11 1974-02-28 Vandeputte Nv Schutzkappe fuer sicherheitsschuhe, insbesondere arbeitsschuhe
GB2022395A (en) * 1978-05-26 1979-12-19 Schiermeister & Junker Steel toe-cap for safety footwear
DE2935959A1 (de) * 1979-09-06 1981-04-02 Esjot-Werk Schiermeister U. Junker, 4763 Ense Stahlkappe mit sohlenseitigem boerdelrand fuer sicherheitsschuhwerk
JPH07177905A (ja) * 1993-12-24 1995-07-18 Nhk Spring Co Ltd 安全靴用先芯
DE29712881U1 (de) * 1997-07-21 1998-11-19 Haimerl, Ewald, 84048 Mainburg Schuh mit Schutzkappe
DE20219131U1 (de) * 2002-12-10 2003-04-17 Magnetech Gmbh Zehenschutzkappe aus Magnesium und dessen Legierungen für Arbeitsschutzschuhe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10 30 November 1995 (1995-11-30) *

Similar Documents

Publication Publication Date Title
US8307957B2 (en) Disk brake with guard screen
WO2011021801A3 (ko) 신발용 수준기
US20070068044A1 (en) Resin safety shoe toe cap
EP3301396A3 (de) Visier für eine feuerwaffe
JP5389062B2 (ja) 幅木材
ITMI950482A1 (it) Freno a disco
TW200635866A (en) Preform for optical element
US20160157552A1 (en) Lightweight foam safety shoes
EP1776885A1 (de) Sicherheitsschuh
JP6888182B2 (ja) クリップレス自転車ペダルのクリートアセンブリ
US10457542B2 (en) Safety stirrup for horseback riding
US20170159748A1 (en) Self-Adhesive Balancing Weight for a Vehicle Wheel
US20070205343A1 (en) Base For Support Foot With High Strength For Supporting Heavy Bodies
JP4321473B2 (ja) クラッチのレリーズ構造
EP1466822A2 (de) Vorrichtung zur Befestigung und Schnelllösung von Befestigungsstangen an einem Fahrradschutzblech
KR200452443Y1 (ko) 신발보호용 커버
JP2014002386A (ja) 非定形の眼鏡フレーム
KR200408738Y1 (ko) 안전화용 내답판
JP3177478B2 (ja) 指先防護板
US20030066377A1 (en) Motorcycle control lever
CN2790223Y (zh) 可弯曲式鞋用钢头脚背护盾
WO2018078574A1 (en) Protective device for safety shoe
BR0304235A (pt) Artigo de titânio que tem resistência à corrosão melhorada
AU2017101149A4 (en) Drawer handle
CN110578763A (zh) 鼓式制动蹄片的磨损指示装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20071026