CA1327886C - Safety shoe - Google Patents
Safety shoeInfo
- Publication number
- CA1327886C CA1327886C CA000546245A CA546245A CA1327886C CA 1327886 C CA1327886 C CA 1327886C CA 000546245 A CA000546245 A CA 000546245A CA 546245 A CA546245 A CA 546245A CA 1327886 C CA1327886 C CA 1327886C
- Authority
- CA
- Canada
- Prior art keywords
- shoe
- sole
- guard
- ribs
- 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.)
- Expired - Lifetime
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
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means
Abstract
ABSTRACT
A shoe including a metatarsal guard comprising a molded plastic arch extending across the metatarsal area supported at each of its ends on the sole and consisting of a number of ribs hinged to each other, the whole being laminated into the upper of the shoe.
A shoe including a metatarsal guard comprising a molded plastic arch extending across the metatarsal area supported at each of its ends on the sole and consisting of a number of ribs hinged to each other, the whole being laminated into the upper of the shoe.
Description
1327~86 SAFETY SHOE
FIELD OF THE INVENTION:
This invention relates to a footwear and in particular to safety shoes used in industry in locations where there is danger from falling objects or other material striking and injuring the foot of the worker.
DESCRIPTION OF THE PRIOR ART:
Safety shoes are commonly required in industry to protect the worker from inadvertent blows to the foot or crushing forces. Most safety shoes incorporate at least a steel box toe to protect the toe sectio~. They may also include an arch guard incorporated into the sole of the shoe.
It has also been proposed in the past to provide a metatarsal guard, that is a guard that protects the instep of the foot.
Such guards have been proposed, for example, in Canadian Patent 1,141,950 which relates to a molded plastic boot in-corporating a metatarsal guard. The guard of Patent 1,141,950, however, is a relatively rigid arch which is not able to flex with the foot in a normal walking mode. Other metatarsal guards are presently provided on leather boo~s in the farm of a loosely attached member which is connected to the forward portion of the boot but not rigidly attached and therefore, while the guard is a rigid guard, the boot can flex underneath the guard~ Such metatarsal guards are, how- -ever, dangerous in that they have a relatively free upper edge which may catch on steps of ladders or other equipment and therefore they constitute a risk to the user. They may also entrap falling material between the guard and the boot and such falling material itself may constitute a risk to the user. Such guards are, therefore, obviously most unsuitable for many industries.
SUMMARY OF THE INVENTION:
In accordance with the present invention, a metat-arsal guard is provided which is itself flexible and therefore may be incorporated within the boot providing no exterior :
' :` ~327~6 protuberance or loose material which could engage or catch on machinery or equipment. The guard is laminated into the upper of the boot and, being flexible, permits the boot to flex and yet the metatarsal guard provicLes substantial pro-tection for the user. Additional protection in addition to the mechanical strength of the metatarsal guard may be pro-vided by a layer of thermally protective material above and below the actual mechanical portion of the metatarsal guard and the whole may be laminated into the upper of the boot.
A clea~er understanding of our invention may be had from a consideration of the following description and drawings in which: -BRIEF DESCRIPTION OF THE DRAWINGS:
Figure 1 is a boot partially in cross-section in-corporating the metatarsal guard in accordance with my invention.
Figure 2A is a view of the metatarsal guard separ-ated from the boot.
Figure 2B is a modified form of the guard.
Figure 2C is a further modification of the guard.
Figure 2D is a further modification of the guard.
DESCRIPTION OF THE PREFERRED EMBODIMENT:
Considering first Figure 1, there is shown a boot 3 including an upper generally designated 4, a bottom sole 5 vulcanized to the upper at its periphery, an insole 6 and a sole 7. Since this is a safety shoe it includes a metallic box toe 8 and would probably include some arch protection (not shown) between the heel and the sole portion. The metat-arsal guard 9 is a plastic molding consisting of a series of ribs 10, 11, i2 and 13, joined by webs 14, 15 and 16. The guard may be molded from any suitable plastic material, which is tough, flexible, relatively rigid but not brittle, such as polypropylene or ABS plastic. The guard forms an arch from the sole on one side of the instep to the sole on the other side o~ the instep and is therefore supported by the sole.
The webs 14, 15 and 16 are simply areas of reduced cross-3 ~L327~86 section which permit flexing of the guard.
As will be seen, the guard is laminated into the upper which consists of an outer layer of material design-ated 17, which may be leather or other suitable material such as leather-like man-made materials, and the liner 18 which may be a similar leather-like material and preferably has a foam layer to provide insulation, designated 19. An additional layer of heat protecting material is provided over the top of the metatarsal guard. Preferably, this insulating material is a fabric which is capable of with-standing high tempera~ures such as a silica fabric sold under the trademark "Zetex". Other inorganic insulating fabrics may also be used. Additional protection for the user may be provided by coating the fabric with aluminium which will provide heat reflection and therefore further protection to the wearer. Another layer of thermal protection may be pro-vided on the inner side of the metatarsal guard. Both layers are designated 20.
The materials used in the construction of the boot are those normally used for such purposes, for example, the bottom sole 5 would normally be made of a composition rubbery material. It may be joined to the upper by various processes including vulcanization, the cement process, a Goodyear welt, injection molding,stitch down, stick down or string last.
The sole section 7 may be made of any suitable material, it is usually a substance referred to as insole board. As has previously been indicated, the upper 4 can be made of any material suitable for the purpose. Leather is conventionally used although man-made materials having similar properties may also be useful. Since the metatarsal guard is located in exactly the point where maximum flexure will occur in the normal act of walking, it is necessary that the guard should be flexible. Web ~embers 14, 15 and 16 are provided between the ribs to permit the rlbs to hinge relative to each other and thus permit flexing of the boot.
It will be understood, however, that in flexing the , ' ;'` ' .
; ' top portion of the ribs must move closer to each other and the lower portion must move apart. Alternative forms of guards may be desirable to increase the flexibility, for e~ample, considering Figure 2B it will be seen that the lower portion of the guard has been cut away in the direct-ion away from the toe of the boot. While there has been some loss of protection in the metatarsal area because the rear portion of the guard is not supported by the sole, substantial protection is still providecl and increased flex-ibility is obviously provided.
A further alternative arrangement is shown in Figure 2C. Here the web portions 14, 15 and 16 have been cut away at the lower portion of guard 9 thus permitting the ribs 10, 11, 12 and 13 to move apart when flexed. This also increases the flexibility of the guard while not substantially decreasing its protective qualities and arch form structure.
A further alternative is shown in Figure 2D where the web portion has been removed from the upper portion of the guard. It will be seen, however, in this case the ribs 10, 11, 12 and 13 overlap so that in its unflexed position there are no spaces between the ribs. However, when flexed, one ribs slips under the other, for example, rib 11 slips under rib 10, thus providing increased flexibility with only ~ minimal loss of strength.
; 25 It will be seen that in all cases the metatarsal guard rib 10 projects slightly over the metallic box toe.
This provides a satisfactory prevention against any material falling between the two guards.
The various dimensions of the ribs, the webs and the guard as a whole may, of course, be adjusted to satisfy the requirements of any particulàr installation, however, it will be understood that the thickness should be sufficient to provide the protection required for the particular location without substantially increasing weight and the ~lexibility of the shoe thus inconveniencing the user.
, . :
' - ~ ~, . . `
~ 5 1~2788~
While specifically described as applied to a safety shoe, it will be understood that the metatarsal guard of this invention may also be used in sport shoes and ice skates wherever the user needs protection at this location in the shoe.
'3~
,~ :
, :
FIELD OF THE INVENTION:
This invention relates to a footwear and in particular to safety shoes used in industry in locations where there is danger from falling objects or other material striking and injuring the foot of the worker.
DESCRIPTION OF THE PRIOR ART:
Safety shoes are commonly required in industry to protect the worker from inadvertent blows to the foot or crushing forces. Most safety shoes incorporate at least a steel box toe to protect the toe sectio~. They may also include an arch guard incorporated into the sole of the shoe.
It has also been proposed in the past to provide a metatarsal guard, that is a guard that protects the instep of the foot.
Such guards have been proposed, for example, in Canadian Patent 1,141,950 which relates to a molded plastic boot in-corporating a metatarsal guard. The guard of Patent 1,141,950, however, is a relatively rigid arch which is not able to flex with the foot in a normal walking mode. Other metatarsal guards are presently provided on leather boo~s in the farm of a loosely attached member which is connected to the forward portion of the boot but not rigidly attached and therefore, while the guard is a rigid guard, the boot can flex underneath the guard~ Such metatarsal guards are, how- -ever, dangerous in that they have a relatively free upper edge which may catch on steps of ladders or other equipment and therefore they constitute a risk to the user. They may also entrap falling material between the guard and the boot and such falling material itself may constitute a risk to the user. Such guards are, therefore, obviously most unsuitable for many industries.
SUMMARY OF THE INVENTION:
In accordance with the present invention, a metat-arsal guard is provided which is itself flexible and therefore may be incorporated within the boot providing no exterior :
' :` ~327~6 protuberance or loose material which could engage or catch on machinery or equipment. The guard is laminated into the upper of the boot and, being flexible, permits the boot to flex and yet the metatarsal guard provicLes substantial pro-tection for the user. Additional protection in addition to the mechanical strength of the metatarsal guard may be pro-vided by a layer of thermally protective material above and below the actual mechanical portion of the metatarsal guard and the whole may be laminated into the upper of the boot.
A clea~er understanding of our invention may be had from a consideration of the following description and drawings in which: -BRIEF DESCRIPTION OF THE DRAWINGS:
Figure 1 is a boot partially in cross-section in-corporating the metatarsal guard in accordance with my invention.
Figure 2A is a view of the metatarsal guard separ-ated from the boot.
Figure 2B is a modified form of the guard.
Figure 2C is a further modification of the guard.
Figure 2D is a further modification of the guard.
DESCRIPTION OF THE PREFERRED EMBODIMENT:
Considering first Figure 1, there is shown a boot 3 including an upper generally designated 4, a bottom sole 5 vulcanized to the upper at its periphery, an insole 6 and a sole 7. Since this is a safety shoe it includes a metallic box toe 8 and would probably include some arch protection (not shown) between the heel and the sole portion. The metat-arsal guard 9 is a plastic molding consisting of a series of ribs 10, 11, i2 and 13, joined by webs 14, 15 and 16. The guard may be molded from any suitable plastic material, which is tough, flexible, relatively rigid but not brittle, such as polypropylene or ABS plastic. The guard forms an arch from the sole on one side of the instep to the sole on the other side o~ the instep and is therefore supported by the sole.
The webs 14, 15 and 16 are simply areas of reduced cross-3 ~L327~86 section which permit flexing of the guard.
As will be seen, the guard is laminated into the upper which consists of an outer layer of material design-ated 17, which may be leather or other suitable material such as leather-like man-made materials, and the liner 18 which may be a similar leather-like material and preferably has a foam layer to provide insulation, designated 19. An additional layer of heat protecting material is provided over the top of the metatarsal guard. Preferably, this insulating material is a fabric which is capable of with-standing high tempera~ures such as a silica fabric sold under the trademark "Zetex". Other inorganic insulating fabrics may also be used. Additional protection for the user may be provided by coating the fabric with aluminium which will provide heat reflection and therefore further protection to the wearer. Another layer of thermal protection may be pro-vided on the inner side of the metatarsal guard. Both layers are designated 20.
The materials used in the construction of the boot are those normally used for such purposes, for example, the bottom sole 5 would normally be made of a composition rubbery material. It may be joined to the upper by various processes including vulcanization, the cement process, a Goodyear welt, injection molding,stitch down, stick down or string last.
The sole section 7 may be made of any suitable material, it is usually a substance referred to as insole board. As has previously been indicated, the upper 4 can be made of any material suitable for the purpose. Leather is conventionally used although man-made materials having similar properties may also be useful. Since the metatarsal guard is located in exactly the point where maximum flexure will occur in the normal act of walking, it is necessary that the guard should be flexible. Web ~embers 14, 15 and 16 are provided between the ribs to permit the rlbs to hinge relative to each other and thus permit flexing of the boot.
It will be understood, however, that in flexing the , ' ;'` ' .
; ' top portion of the ribs must move closer to each other and the lower portion must move apart. Alternative forms of guards may be desirable to increase the flexibility, for e~ample, considering Figure 2B it will be seen that the lower portion of the guard has been cut away in the direct-ion away from the toe of the boot. While there has been some loss of protection in the metatarsal area because the rear portion of the guard is not supported by the sole, substantial protection is still providecl and increased flex-ibility is obviously provided.
A further alternative arrangement is shown in Figure 2C. Here the web portions 14, 15 and 16 have been cut away at the lower portion of guard 9 thus permitting the ribs 10, 11, 12 and 13 to move apart when flexed. This also increases the flexibility of the guard while not substantially decreasing its protective qualities and arch form structure.
A further alternative is shown in Figure 2D where the web portion has been removed from the upper portion of the guard. It will be seen, however, in this case the ribs 10, 11, 12 and 13 overlap so that in its unflexed position there are no spaces between the ribs. However, when flexed, one ribs slips under the other, for example, rib 11 slips under rib 10, thus providing increased flexibility with only ~ minimal loss of strength.
; 25 It will be seen that in all cases the metatarsal guard rib 10 projects slightly over the metallic box toe.
This provides a satisfactory prevention against any material falling between the two guards.
The various dimensions of the ribs, the webs and the guard as a whole may, of course, be adjusted to satisfy the requirements of any particulàr installation, however, it will be understood that the thickness should be sufficient to provide the protection required for the particular location without substantially increasing weight and the ~lexibility of the shoe thus inconveniencing the user.
, . :
' - ~ ~, . . `
~ 5 1~2788~
While specifically described as applied to a safety shoe, it will be understood that the metatarsal guard of this invention may also be used in sport shoes and ice skates wherever the user needs protection at this location in the shoe.
'3~
,~ :
, :
Claims (13)
- Claim 1. A safety shoe having an interior defined by an upper and a sole ,a toe at its front, a heel at its rear and an ankle portion there between , a toe guard mounted on said sole adjacent said front, said upper fastened around the periphery of said sole and enclosing said toe guard, said upper including an outer layer and an inner layer comprising a liner, a metatarsal guard unitarily molded from a tough resilient flexible plastic laminated in said upper between said inner and outer layers extending from said toe guard to a point adjacent the front of said ankle portion of said shoe, said metatarsal guard comprising a plurality of arcuate ribs the ends of said ribs projecting towards said sole and the upper central portions lying between said ends said ribs hingedly joined to each other forming a unitary arch shaped structure extending from said sole on one side of said shoe to said sole other side of said shoe forming a continuous guard between the interior and exterior of the upper portion of said shoe.
- Claim 2. A safety shoe as claimed in Claim 1 wherein said ribs are joined to each other only at their said upper central portions.
- Claim 3. A safety shoe as claimed in Claim 1 where only the ribs adjacent said toe guard extend from said sole of one side of said shoe to said sole on the other side of said shoe.
- Claim 4. A safety shoe as claimed in Claim 1 wherein said ribs are joined to each other only at their ends adjacent said sole and their upper central portions are separate but overlap to produce a continuous guard from said toe guard to the front of said ankle portion.
- Claim 5. A safety shoe as claimed in Claim 4 wherein said metatarsal guard is covered with a fire resistant, thermally insulating fabric, including a heat reflecting layer.
- Claim 6. A safety shoe having an interior defined by an upper and a sole ,a toe at its front, a heel at its rear and an ankle portion there between , a toe guard mounted on said sole adjacent said front, said upper fastened around the periphery of said sole and enclosing said toe guard, said upper including an outer layer and an inner layer comprising a liner, a metatarsal guard unitarily molded from a tough resilient flexible plastic laminated in said upper between said inner and outer layers extending from said toe guard to a point adjacent the front of said ankle portion of said shoe, said metatarsal guard comprising a plurality of arcuate ribs the ends of said ribs projecting towards said sole and the upper central portions lying between said ends said ribs hingedly joined to each other forming a unitary arch shaped structure extending from one side of said shoe to the other side of said shoe forming a substantially continuous guard between the interior and exterior of the upper portion of said shoe.
- Claim 7. A safety shoe as claimed in Claim 6 wherein said ribs are joined to each other only at their said upper central portions.
- Claim 8. A safety shoe as claimed in Claim 6 where at least the ribs adjacent said toe guard extend from said sole on one side of said shoe to said sole on the other side of said shoe.
- Claim 9. A safety shoe as claimed in Claim 6 wherein said ribs are joined to each other only at their ends adjacent said sole and their upper central portions are separate but overlap to produce a continuous guard from said toe guard to the front of said ankle portion.
- Claim 10. A safety shoe as claimed in Claim 6 wherein said metatarsal guard is covered with a fire resistant, thermally insulating fabric, including a heat reflecting layer.
- Claim 11. A shoe having an interior defined by an upper and a sole ,a toe at its front, a heel at its rear and an ankle portion there between , a toe guard mounted on said sole adjacent said front, said upper fastened around the periphery of said sole and enclosing said toe guard, said upper including an outer layer and an inner layer comprising a liner, a metatarsal guard unitarily molded from a tough resilient flexible plastic laminated in said upper between said inner and outer layers extending from said toe guard to a point adjacent the front of said ankle portion of said shoe, said metatarsal guard comprising a plurality of arcuate ribs the ends of said ribs projecting towards said sole and the upper central portions lying between said ends said ribs hingedly joined to each other forming a unitary arch shaped structure extending from one side of said shoe to the other side of said shoe forming a substantially continuous guard between the interior and exterior of the upper portion of said shoe.
- Claim 12. A shoe as claimed in Claim 11 wherein said ribs are joined to each other only at their said upper central portions.
- Claim 13. A shoe as claimed in Claim 11 where at least the ribs adjacent said toe guard extend from said sole on one side of said shoe to said sole on the other side of said shoe.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000546245A CA1327886C (en) | 1987-09-04 | 1987-09-04 | Safety shoe |
| US07/310,864 US4908963A (en) | 1987-09-04 | 1989-02-14 | Safety shoe |
| GB8903514A GB2228177B (en) | 1987-09-04 | 1989-02-16 | Safety shoe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000546245A CA1327886C (en) | 1987-09-04 | 1987-09-04 | Safety shoe |
| US07/310,864 US4908963A (en) | 1987-09-04 | 1989-02-14 | Safety shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1327886C true CA1327886C (en) | 1994-03-22 |
Family
ID=34465844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000546245A Expired - Lifetime CA1327886C (en) | 1987-09-04 | 1987-09-04 | Safety shoe |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4908963A (en) |
| CA (1) | CA1327886C (en) |
| GB (1) | GB2228177B (en) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148565A (en) * | 1990-05-11 | 1992-09-22 | Norcross Footwear, Inc. | Method for making a rubber boot containing heat reflecting means |
| US5068982A (en) * | 1990-05-11 | 1991-12-03 | Servus Rubber Company | Rubber boot containing heat reflecting means |
| US5152082A (en) * | 1991-12-16 | 1992-10-06 | Culpepper Thomas C | Shoe and ankle support therefor |
| US5546680A (en) * | 1992-10-28 | 1996-08-20 | Lacrosse Footwear, Inc. | Safety footwear |
| CA2119837C (en) * | 1994-03-24 | 1998-09-22 | Gilles Fortin | Metatarsal guard for safety shoe |
| US5765297A (en) * | 1994-08-16 | 1998-06-16 | Cooper; Jeffrey A. | Protective overshoe |
| DE19623361C1 (en) * | 1996-06-12 | 1997-09-11 | Freudenberg Carl Fa | Safety shoe with flexible sole and metal toe-cap |
| US5878512A (en) * | 1997-05-19 | 1999-03-09 | Cooper; Jeffrey A. | Protective overshoe |
| USD412391S (en) * | 1997-10-15 | 1999-08-03 | Columbia Insurance Company | Shoe toe protector |
| US6598323B1 (en) | 1997-12-05 | 2003-07-29 | Robert M. Gougelet | Toe protectors |
| US5996257A (en) * | 1998-05-14 | 1999-12-07 | William H. Kaufman Inc. | Puncture-resistant and impact-resistant safety shoe insert |
| US6029373A (en) * | 1998-10-23 | 2000-02-29 | Gredico Footwear Ltd. | Stitch-down safety shoe |
| US6161313A (en) * | 1999-01-26 | 2000-12-19 | Stc Footwear Inc. | Metatarsal safety guard for footwear |
| CA2323565C (en) * | 1999-10-18 | 2009-02-03 | Weinbrenner Shoe Company, Inc. | Internal cushioned metatarsal guard for safety footwear and method of making the same |
| CA2336429C (en) * | 2000-03-02 | 2004-12-14 | Dezi A. Krajcir | Metatarsal protectors for footwear |
| US6367168B1 (en) * | 2000-07-26 | 2002-04-09 | Nike, Inc. | Article of footwear including a tented upper |
| US6754983B2 (en) * | 2000-07-26 | 2004-06-29 | Nike, Inc. | Article of footwear including a tented upper |
| US6618962B1 (en) * | 2000-10-11 | 2003-09-16 | Columbia Insurance Company | Metatarsal protector |
| US7328526B2 (en) * | 2001-06-06 | 2008-02-12 | Rocky Brands Retail Llc | Metatarsal guard |
| US7603796B2 (en) * | 2001-10-15 | 2009-10-20 | Rocky Brands Wholesale, LLC | Boot with oversized toe box for thermal insulation |
| US7444768B2 (en) * | 2004-02-12 | 2008-11-04 | Nike, Inc. | Footwear and other systems including a flexible mesh or braided closure system |
| US7305776B2 (en) * | 2004-07-30 | 2007-12-11 | Weinbrenner Shoe Company, Inc. | Integrated flexible metatarsal guard with extended toe cap |
| US7178271B2 (en) * | 2004-12-14 | 2007-02-20 | Columbia Insurance Company | Sole with improved construction |
| US7587841B2 (en) * | 2006-07-03 | 2009-09-15 | Culpepper Thomas C | Shoe and ankle support with artificial spider web silk |
| US7992325B2 (en) * | 2006-11-06 | 2011-08-09 | Shew, Inc. | Flexibly rigid personal protective equipment components |
| US20080148607A1 (en) * | 2006-12-22 | 2008-06-26 | Brian Mitchell Spar | Crease prevention shoe insert |
| US20130019508A1 (en) * | 2010-12-28 | 2013-01-24 | Armor Protective Concepts LLC | Multi Component Composite Plate Protection System for Footwear |
| CA2918584C (en) | 2011-10-10 | 2017-08-15 | Tbl Licensing Llc | Welt-frame construction and protection devices for use in shoes |
| US10219582B2 (en) * | 2011-10-10 | 2019-03-05 | Tbl Licensing Llc | Protection devices for use in shoes or other products |
| WO2014007818A1 (en) * | 2012-07-05 | 2014-01-09 | Honeywell International Inc. | Injected protective toe cap |
| WO2014086229A1 (en) * | 2012-12-05 | 2014-06-12 | Honeywell International Inc. | An integrated flexible metatarsal protection for heavy-duty safety footwear |
| EP2740379B1 (en) * | 2012-12-10 | 2014-10-15 | Arbesko-gruppen Ab | Safety toe cap |
| US9113675B2 (en) | 2013-06-05 | 2015-08-25 | Nike, Inc. | Article of footwear |
| ES2646756B1 (en) * | 2016-06-13 | 2018-09-18 | Alfonso CALZADO DESVALLS | SPORTS BOOT WITH PROTECTION |
| US11622597B2 (en) | 2016-08-10 | 2023-04-11 | Red Wing Shoe Company, Inc. | Footwear having internal metatarsal guard |
| US20180338565A1 (en) * | 2017-05-25 | 2018-11-29 | Jahaziel Aguirre | Shoe with plates |
| CN107969746A (en) * | 2017-12-28 | 2018-05-01 | 戴建敏 | A kind of Labor protection shoes |
| US11672300B2 (en) * | 2019-02-22 | 2023-06-13 | Fuerst Group, Inc. | Footwear article with wear guard |
| WO2020172630A1 (en) * | 2019-02-22 | 2020-08-27 | Fuerst Group, Inc. | Footwear article with wear guard |
| US11930887B2 (en) | 2019-05-31 | 2024-03-19 | Nike, Inc. | Protective upper for article of footwear |
| USD948193S1 (en) * | 2020-02-28 | 2022-04-12 | Fuerst Group, Inc. | Footwear article |
| GB2599771B (en) * | 2020-09-30 | 2022-10-12 | Allington Ip Ltd | A metatarsal protection bridge |
| US11395526B1 (en) | 2021-11-16 | 2022-07-26 | Telfair W. Houston, III | Shoe insert |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2836909A (en) * | 1957-03-08 | 1958-06-03 | Gen Shoe Corp | Safety shoe |
| FR1268574A (en) * | 1960-06-22 | 1961-08-04 | Baudou Soc D Expl Des Ets | Footwear such as a safety boot or boot of molded rubber or plastic |
| US3102347A (en) * | 1961-10-11 | 1963-09-03 | Frank B Griswold | Safety shoe and instep guard therefor |
| GB950261A (en) * | 1962-09-29 | 1964-02-26 | John Peter Hindley | Improvements in or relating to shoes and instep guards therefor |
| GB1275384A (en) * | 1971-01-05 | 1972-05-24 | British Bata Shoe Co Ltd | Safety footwear |
| NL7612407A (en) * | 1976-11-09 | 1978-05-11 | Usm Nederland B V | Safety footwear with instep guard plate - which hinges on toe cap and is accommodated in boot material |
| US4102062A (en) * | 1977-07-18 | 1978-07-25 | Chromalloy American Corporation | Safety boot with metatarsal protection |
| DD140977B1 (en) * | 1978-12-29 | 1982-10-27 | Dirk Lisske | INSULATING WORK PROTECTION BOOTS FOR WORKING UNDER VOLTAGE IN LOW VOLTAGE SYSTEMS |
| US4231170A (en) * | 1979-02-02 | 1980-11-04 | Griswold Frank B | Instep protector for safety shoes |
| CA1141950A (en) * | 1979-12-17 | 1983-03-01 | Hans R. Scherz | Safety boot |
| US4342159A (en) * | 1980-07-21 | 1982-08-03 | Interco Incorporated | Metatarsal guard safety shoe |
| HU183445B (en) * | 1981-05-19 | 1984-05-28 | Foeldvar Gumiipari Sz | Labour-safety rubber-boots |
| CA1239535A (en) * | 1985-06-26 | 1988-07-26 | Ronald D. Lord | Footwear reinforcement |
-
1987
- 1987-09-04 CA CA000546245A patent/CA1327886C/en not_active Expired - Lifetime
-
1989
- 1989-02-14 US US07/310,864 patent/US4908963A/en not_active Expired - Lifetime
- 1989-02-16 GB GB8903514A patent/GB2228177B/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB8903514D0 (en) | 1989-04-05 |
| GB2228177B (en) | 1992-10-21 |
| GB2228177A (en) | 1990-08-22 |
| US4908963A (en) | 1990-03-20 |
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| Publication | Publication Date | Title |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121205 |