WO2006099911A1 - Chaussure de securite a embout de protection renforce - Google Patents
Chaussure de securite a embout de protection renforce Download PDFInfo
- Publication number
- WO2006099911A1 WO2006099911A1 PCT/EP2006/000942 EP2006000942W WO2006099911A1 WO 2006099911 A1 WO2006099911 A1 WO 2006099911A1 EP 2006000942 W EP2006000942 W EP 2006000942W WO 2006099911 A1 WO2006099911 A1 WO 2006099911A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- toe
- protuberance
- cap
- cap according
- region
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C13/00—Wear-resisting attachments
- A43C13/14—Special attachments for toe-caps; Protecting caps for toe-caps
-
- 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
Definitions
- the present invention relates to a reinforced toe-cap for safety footwear according to the characteristics set forth in the preamble to the main claim. It is also directed towards a kit for the production of a reinforced toe-cap. Background art
- toe-caps reinforcing toe-caps to be inserted so as to fit in toe regions of safety footwear are known. Since these toe-caps are intended to protect the ends of the feet, they have to be able to withstand the impact of predetermined falling loads without breaking and without undergoing significant deformation in accordance with standard tests for evaluating the strength of these items. In order to offer the mechanical properties that are necessary to pass the required strength tests, it is known to make the toe-caps of metal or plastics material or even of composite material.
- metal toe-caps are generally heavy and are also unsuitable for some uses including use in locations in which there may be metal-sensitive apparatus (for example, metal detectors) or in locations in which there is a need to withstand very high or very low temperatures, given the high thermal conductivity of metals.
- metal-sensitive apparatus for example, metal detectors
- toe-caps made of plastics materials they generally have to have considerable thicknesses in order to offer the required mechanical strength, to the detriment of the dimensions and comfort of the footwear in which they are fitted.
- reinforcing toe-caps made of composite material is limited by the relatively high production cost. Reinforcing toe-caps having particular shapes, for example, with variable thickness along the cross-section of the toe-cap, are also known.
- the problem underlying the present invention is that of providing a reinforcing toe-cap for safety footwear that is designed structurally and functionally to overcome the limitations set out above with reference to the prior art mentioned.
- Figure 1 is a perspective view of a reinforcing toe-cap formed in accordance with the present invention
- Figure 2 is a longitudinal section through the toe-cap of Figure 1
- Figure 3 is a longitudinal section through a second embodiment of a reinforcing toe-cap formed in accordance with the present invention
- Figure 4 is an exploded longitudinal section through a third embodiment of a reinforcing toe-cap formed in accordance with the present invention
- Figure 5 is a longitudinal section through the toe-cap of Figure 4 in the assembled condition.
- a reinforcing toe-cap for safety footwear formed in accordance with the present invention is generally indicated 1.
- the toe-cap 1 is intended to be connected, by conventional techniques, to a sole and/or to the upper of a safety shoe or boot, not shown.
- the toe-cap 1 comprises a body 2 which is generally in the shape of a half- shell that is open on one side in the region of an opening 3 through which the user's foot is inserted; the half-shell is closed at the opposite end by a front region 4 of the toe-cap.
- a top region 5 extends and is defined between the opening 3 and the front region 4 which is intended to face the end of the foot in use; the top region 5 is connected to the front region 4 and is intended to face the upper surface of the foot in use.
- a terminal portion 2a of soft material such as, for example, rubber preferably also extends from the opening 3 of the body 2 to improve the comfort of the footwear.
- a protuberance 6 is formed on the body 2, the protuberance projecting from the natural profile defined by the curvature of the toe-cap.
- the natural profile of the toe-cap is indicated by a broken line in the section of Figure 2.
- protuberance therefore adopts the generally accepted meaning which, in an attempt to give it a greater geometrical connotation, could be defined as a surface portion which comprises a maximum of curvature and is joined at least to a portion of the surrounding surface by a concave connecting region, or by a region of discontinuity of curvature.
- the protuberance 6 is preferably formed on the top region 5 at a distance S of between 10 and 35 mm from the end of the front region 4, but it may also usefully be formed on the front region, as explained further below.
- the body 2 is preferably produced by the technique of injection and moulding of a plastics material such as, for example, polycarbonate, polyamide, polypropylene, polyethylene or other polyolefins.
- the protuberance 6 is produced integrally with the body 2 and preferably has a lenticular shape with a generally elliptical base plan and with the following dimensions: height H relative to the profile of the top region of between 1 and 5 mm; both longitudinal and transverse dimensions L of the base of between 10 and 40 mm.
- the protuberance 6 may, however, be circular in plan or may have other shapes more complex than that shown in the appended drawings. For example, it may extend longitudinally along the top region 5 possibly also extending over the front region 4, it may extend longitudinally in a central position or in an offset position, or it may have an arcuate base plan or a flatter profile, for example, with a trapezoidal cross-section. Moreover, two or more protuberances may also be provided, extending on the top region 5 and/or the front region 4 parallel to one another or intersecting one another.
- a test typically used to check the impact strength consists in dropping a metal gravity body having a predefined weight (normally 20 kg), on edge, from a predetermined height (normally 1 metre), onto the toe-cap to be tested (ISO standard 20345/2003).
- the test is considered to be passed if the maximum deformation caused in the toe-cap by the impact with the gravity body is below a predetermined threshold and the toe-cap does not have significant cracks. In this case the toe-cap would in fact be able to perform the function of protecting the user's foot in a positive manner.
- the toe-caps of both types were produced by the injection and moulding of the same plastics material, in the specific case, polycarbonate.
- the results of the tests showed that the presence of the protuberance 6 conferred on the toe-cap 1 a greater ability to withstand impacts by falling gravity bodies which was quantifiable as an increase of about 10%-15%.
- the favourable results obtained might be explained by the fact that, for a given material and thickness, the impact is absorbed better by a structure having a more marked curvature in comparison with a flatter structure, since a significant component of the forces discharged onto the toe-cap by the impact with the gravity body is discharged towards the side walls of the toe-cap and by the side walls to the sole.
- the region of lesser curvature is often precisely the top region where the likelihood of an impact by a load falling from above is greatest and therefore where the protective function of the toe-cap is most important.
- the impact strength of the top region can thus be increased without increasing the thickness of the layer of plastics material.
- FIG. 3 shows a reinforcing toe-cap 100 constituting a second embodiment of the invention in which similar details have the same reference numerals as in the embodiment described above.
- the toe-cap 100 comprises a protuberance 106 which is produced by being moulded onto the previously-produced body 2.
- the protuberance 106 can thus advantageously be moulded on with a plastics material different from that used to produce the body 2, thus permitting greater freedom in the selection of the materials to be used in accordance with appropriate considerations of economy, type of application, and efficiency of performance.
- the protuberance may advantageously be made of polycarbonate or of polyamide and the body 2 of less expensive polypropylene.
- Figures 4 and 5 show generally a reinforcing toe-cap 200 constituting a third embodiment of the invention in which similar details have the same reference numerals as in the embodiment described above.
- the protuberance is produced by connecting a supplementary piece 206 to the body 2.
- These elements are produced separately and independently and can be connected, for example, by gluing.
- the supplementary piece 206 may advantageously be made of any material that is considered suitable, including plastics material, for example, those mentioned above, a metal, a composite material, etc.
- a closed chamber 207 is defined between the supplementary piece 206 and the body 2. This structure is generally stronger, given that the overall impact strength in the region of the protuberance is determined both by the presence of the supplementary piece 206 and by the presence of the body 2.
- a material having viscoelastic or elastomeric properties such as, for example, silicone or thermoplastic, vulcanized or even expanded rubbers, may be provided in the closed chamber 207.
- a layer of tear-resistant and substantially inextensible material for example, an aramidic-fibre fabric such as the material known by the trade name of Kevlar®, is interposed between the supplementary piece 206 and the body 2.
- an aramidic-fibre fabric such as the material known by the trade name of Kevlar®
- this latter embodiment of the invention advantageously permits the production of safety toe-caps from separate elements which are made of different materials and which can be combined with one another in various ways to produce toe-caps that are individualized according to the specific field of application of the safety footwear in which they are to be fitted.
- the body 2 will generally be produced by injection and moulding of plasties material, whereas the supplementary piece 206 that can be connected to the body 2 will be available in plasties material with better mechanical characteristics (polycarbonate, polyamides, ABS, and other techno- polymers), or in metal, or even in composite material. It is thus possible to provide kits suitable for the production of a reinforced toe-cap for safety footwear and comprising a body made of plastics material and one or more supplementary pieces made of different materials each arranged to be connected to the body 2. This operation can be performed by the safety footwear manufacturer who may in general be other than the manufacturer of the toe-caps. In this latter case, moreover, the capability is provided for a supplementary piece that has been damaged as a result of an impact to be replaced by another supplementary piece without replacing the entire shoe or boot.
- a layer of tear- resistant and substantially inextensible material such as an aramidic-fibre fabric, for example, Kevlar® may be applied firmly on top of the protuberance 6, 106, and 206.
- the toe-caps thus obtained have clear improvements, at least of the order of 10%-20%, in terms of impact strength.
- the aramidic-fibre fabric may also be wrapped around the body 2 so as to be closed in a loop around the body without breaks in continuity. Greater lateral limitation of deformation of the toe-cap is thus achieved, resulting in a further increase in impact strength.
- the present invention thus solves the problem discussed with reference to the prior art mentioned, at the same time offering many further advantages.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
La présente invention concerne un embout de protection renforcé (1, 100, 200) de chaussure de sécurité comprenant un corps (2) dans lequel sont définies une région supérieure (5) et une région d'embout avant (4) ; une protubérance (6, 106, 206) est définie sur le corps dans la région supérieure, saillant du profil de la région supérieure.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06706611A EP1860967A1 (fr) | 2005-03-23 | 2006-02-03 | Chaussure de securite a embout de protection renforce |
US11/885,775 US20080163519A1 (en) | 2005-03-23 | 2006-02-03 | Reinforced Toe-Cap for Safety Footwear |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPD2005A000084 | 2005-03-23 | ||
IT000084A ITPD20050084A1 (it) | 2005-03-23 | 2005-03-23 | Puntale rinforzato per calzature di sicurezza |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006099911A1 true WO2006099911A1 (fr) | 2006-09-28 |
Family
ID=36124466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/000942 WO2006099911A1 (fr) | 2005-03-23 | 2006-02-03 | Chaussure de securite a embout de protection renforce |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080163519A1 (fr) |
EP (1) | EP1860967A1 (fr) |
IT (1) | ITPD20050084A1 (fr) |
WO (1) | WO2006099911A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009077629A1 (fr) * | 2007-12-14 | 2009-06-25 | Tecnotac, S.L. | Bout de sécurité pour chaussure |
EP3257391A1 (fr) * | 2016-06-16 | 2017-12-20 | Soulier, Joël | Embout de protection non métallique |
IT201600109572A1 (it) * | 2016-10-31 | 2018-05-01 | Diadora Sport S R L | Puntale per calzatura di sicurezza |
KR101891528B1 (ko) | 2017-02-14 | 2018-08-24 | 강재석 | 기능성 토-프로텍터 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7762010B2 (en) * | 2004-11-02 | 2010-07-27 | Novation Tech, S.p.A. | Toe for safety footwear having a multilayer structure |
MX2011004196A (es) * | 2008-10-20 | 2011-07-04 | Simon La Rochelle | Calzado de seguridad. |
US8782925B2 (en) * | 2013-09-03 | 2014-07-22 | Jennus Athletics Company | Athletic shoe |
US9918517B2 (en) * | 2014-01-15 | 2018-03-20 | Randy L. Hansen | Footwear articles with extension apparatuses and methods of using the same |
US9078488B1 (en) * | 2014-09-30 | 2015-07-14 | Nike, Inc. | Article of footwear incorporating a lenticular knit structure |
US10897951B2 (en) | 2016-11-17 | 2021-01-26 | Richard Covel | Footwear insert |
US10238167B2 (en) * | 2016-11-17 | 2019-03-26 | Richard Covel | Footwear insert |
USD1014943S1 (en) * | 2021-08-09 | 2024-02-20 | Tbl Licensing Llc | Toe cap for footwear |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR571842A (fr) * | 1922-10-26 | 1924-05-23 | United Shoe Machinery Ab | Bout dur pour chaussures et son mode de fabrication |
GB490496A (en) * | 1936-12-22 | 1938-08-16 | Heinrich Coenen | Improvements in or relating to guards for toes of boots |
GB511324A (en) * | 1938-07-09 | 1939-08-16 | John Broughton | An improved protector for the toes of boots and shoes |
GB678031A (en) * | 1950-03-09 | 1952-08-27 | Brynmawr Boot Makers Ltd | Improvements in or relating to footwear |
DE892567C (de) * | 1951-02-22 | 1953-10-08 | Auguste Sartori | Schutzkappe fuer Schuhe, insbesondere Arbeitsschuhe |
DE1163706B (de) * | 1961-07-07 | 1964-02-20 | Eugen Bruetting Fa | Fussballstiefel |
EP1249185A1 (fr) * | 2001-04-11 | 2002-10-16 | Uvex Arbeitsschutz GmbH | Chaussure de sécurité, chaussure ou botte protectrice, pourvue d'un embout protecteur |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8703425U1 (fr) * | 1987-03-06 | 1988-04-21 | Reber, Werner, 6783 Dahn, De | |
US5878511A (en) * | 1997-09-19 | 1999-03-09 | Krajcir; Dezi | Toe and metatarsal protectors for safety footwear |
CH693223A5 (de) * | 1998-09-09 | 2003-04-30 | Graf Skates Ag | Schlittschuh und Schale für einensolchen |
US20020069558A1 (en) * | 1999-10-27 | 2002-06-13 | William T. Wilkinson | Flexible non-restrictive toe structure for shoes |
CA2336429C (fr) * | 2000-03-02 | 2004-12-14 | Dezi A. Krajcir | Protecteurs de metatarse pour chaussures |
US6286234B1 (en) * | 2000-05-19 | 2001-09-11 | Larry B. Smith, Jr. | Footwear protector for motorcycle riding |
US6722061B2 (en) * | 2001-11-20 | 2004-04-20 | Nike, Inc. | Article of footwear with a replaceable ground-engaging member and method of attaching the ground-engaging member |
US7421807B2 (en) * | 2005-09-23 | 2008-09-09 | Eidnoc Enterprises, L.L.C. | Footwear for use during or after a pedicure and method of using same |
-
2005
- 2005-03-23 IT IT000084A patent/ITPD20050084A1/it unknown
-
2006
- 2006-02-03 WO PCT/EP2006/000942 patent/WO2006099911A1/fr not_active Application Discontinuation
- 2006-02-03 US US11/885,775 patent/US20080163519A1/en not_active Abandoned
- 2006-02-03 EP EP06706611A patent/EP1860967A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR571842A (fr) * | 1922-10-26 | 1924-05-23 | United Shoe Machinery Ab | Bout dur pour chaussures et son mode de fabrication |
GB490496A (en) * | 1936-12-22 | 1938-08-16 | Heinrich Coenen | Improvements in or relating to guards for toes of boots |
GB511324A (en) * | 1938-07-09 | 1939-08-16 | John Broughton | An improved protector for the toes of boots and shoes |
GB678031A (en) * | 1950-03-09 | 1952-08-27 | Brynmawr Boot Makers Ltd | Improvements in or relating to footwear |
DE892567C (de) * | 1951-02-22 | 1953-10-08 | Auguste Sartori | Schutzkappe fuer Schuhe, insbesondere Arbeitsschuhe |
DE1163706B (de) * | 1961-07-07 | 1964-02-20 | Eugen Bruetting Fa | Fussballstiefel |
EP1249185A1 (fr) * | 2001-04-11 | 2002-10-16 | Uvex Arbeitsschutz GmbH | Chaussure de sécurité, chaussure ou botte protectrice, pourvue d'un embout protecteur |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009077629A1 (fr) * | 2007-12-14 | 2009-06-25 | Tecnotac, S.L. | Bout de sécurité pour chaussure |
EP3257391A1 (fr) * | 2016-06-16 | 2017-12-20 | Soulier, Joël | Embout de protection non métallique |
IT201600109572A1 (it) * | 2016-10-31 | 2018-05-01 | Diadora Sport S R L | Puntale per calzatura di sicurezza |
KR101891528B1 (ko) | 2017-02-14 | 2018-08-24 | 강재석 | 기능성 토-프로텍터 |
Also Published As
Publication number | Publication date |
---|---|
US20080163519A1 (en) | 2008-07-10 |
EP1860967A1 (fr) | 2007-12-05 |
ITPD20050084A1 (it) | 2006-09-24 |
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