CA2580927C - Light-weight, non-slip, wear resistant boot - Google Patents
Light-weight, non-slip, wear resistant boot Download PDFInfo
- Publication number
- CA2580927C CA2580927C CA002580927A CA2580927A CA2580927C CA 2580927 C CA2580927 C CA 2580927C CA 002580927 A CA002580927 A CA 002580927A CA 2580927 A CA2580927 A CA 2580927A CA 2580927 C CA2580927 C CA 2580927C
- Authority
- CA
- Canada
- Prior art keywords
- boot
- light weight
- sole
- ground
- pads
- 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 - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/12—Special watertight footwear
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
- A43B13/24—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions
- A43B13/26—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions projecting beyond the sole surface
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A light weight boot comprising an injected shell formed from EVA (ethylene vinyl acetate) and having a sole and a heel portion. At least one of the sole and heel portions has a substantial portion of an outer surface thereof provided with a patterned ground-contacting pad adhesively secured thereto. The patterned ground-contacting pad is formed from one of TPR (thermoplastic rubber), rubber or PU whereby to provide a non-slip, light weight and flexible wear resistant ground contacting surface for the boot.
Description
LIGHT WEIGHT, NON-SLIP, WEAR RESISTANT BOOT
TECHNICAL FIELD
The present invention relates to a light weight EVA boot wherein the sole and/or heel portions thereof are provided with a patterned pad adhesively secured thereto whereby to provide a non-slip and flexible wear resistant ground contacting surface.
The present invention is particularly concerned, although not exclusively, to winter or rain boots which have their sole and heel portions provided with a wear resistant and anti-slip surface formed from one of thermoplastic rubber (TPR), rubber or polyurethane (PU).
BACKGROUND ART
Wear resistant and non-slip boots are generally formed from rubber material or TPR. However, a disadvantage of rubber boots is that they are heavy and this is particularly not attractive and comfortable to wear. Rubber material is also expensive and does not readily render itself to fashion designs.
There is therefore a need to provide a boot and method of manufacturing of a boot which may possess all of the features of the rubber boot, and particularly the wearability, but which could be light weight and waterproof.
It is known to provide light weight articles of footwear having excellent ground contacting surfaces which are non-slip but such are usually provided for the construction of athletic shoes and this type of shoe manufacturing requires a lasting and cementing process wherein, after the upper is cement lasted, many of the parts of the article of footwear are glued together. However, when manufacturing boots this type of process is not feasible due to its non-waterproof aspect and the high cost of manufacturing. All EVA shells or lower portion of a boot wear quickly at their ground engaging surface and are very slippery when in contact with a wet or icy surface.
SUMMARY OF INVENTION
It is therefore a feature of the present invention to provide a light weight boot which substantially overcomes the above-mentioned disadvantages of the prior art and which is provided with a sole and/or heel which is non-slip, light weight and which provides a flexible wear resistant ground contacting surface.
Another feature of the present invention is to provide a light weight boot wherein the shell is molded from EVA and wherein the sole and/or heel have a substantial portion thereof provided with a patterned ground contacting pad formed from one of TPR, rubber or PU.
According to the above features, from a broad aspect, the present invention provides a light weight, waterproof boot comprising an injected molded shell having a sole including a heel portion. The shell is injected molded entirely from EVA (ethylene vinyl acetate). The sole and heel portion each have a substantial portion of an outer surface thereof provided with one or more patterned ground-contacting pads adhesively secured thereto. The patterned ground-contacting pads are each formed from a non-slip material. The ground-contacting pads have gripping formations extending above an outer surface of the sole and heel portion. The ground-contacting pads define flexible wear resistant, non-slip, ground-contacting surfaces for the boot. The pads are formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane).
According to a still further broad aspect of the present invention, there is provided a method of manufacturing an article of footwear in the form of a light - 2a -weight waterproof boot. The method comprises the steps of injection molding a lower boot portion or shell having a sole with a heel portion entirely from light weight EVA
(ethylene vinyl acetate). The method further comprises molding patterned sole and heel pads with gripping formations from one of TPR, rubber or PU. The method further comprises adhesively securing the sole and heel pads to an outer surface of the sole and heel portion, respectively, to produce a boot which has a non-slip, light weight and flexible wear resistant ground contacting surface.
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a side view of a boot shell of Figures 1 and 3;
FIG. 2 is a bottom view of Figure 1;
i . . rn .-,......xnreF .ri4.r M.' .===........n Mre. . .r.. . .
TECHNICAL FIELD
The present invention relates to a light weight EVA boot wherein the sole and/or heel portions thereof are provided with a patterned pad adhesively secured thereto whereby to provide a non-slip and flexible wear resistant ground contacting surface.
The present invention is particularly concerned, although not exclusively, to winter or rain boots which have their sole and heel portions provided with a wear resistant and anti-slip surface formed from one of thermoplastic rubber (TPR), rubber or polyurethane (PU).
BACKGROUND ART
Wear resistant and non-slip boots are generally formed from rubber material or TPR. However, a disadvantage of rubber boots is that they are heavy and this is particularly not attractive and comfortable to wear. Rubber material is also expensive and does not readily render itself to fashion designs.
There is therefore a need to provide a boot and method of manufacturing of a boot which may possess all of the features of the rubber boot, and particularly the wearability, but which could be light weight and waterproof.
It is known to provide light weight articles of footwear having excellent ground contacting surfaces which are non-slip but such are usually provided for the construction of athletic shoes and this type of shoe manufacturing requires a lasting and cementing process wherein, after the upper is cement lasted, many of the parts of the article of footwear are glued together. However, when manufacturing boots this type of process is not feasible due to its non-waterproof aspect and the high cost of manufacturing. All EVA shells or lower portion of a boot wear quickly at their ground engaging surface and are very slippery when in contact with a wet or icy surface.
SUMMARY OF INVENTION
It is therefore a feature of the present invention to provide a light weight boot which substantially overcomes the above-mentioned disadvantages of the prior art and which is provided with a sole and/or heel which is non-slip, light weight and which provides a flexible wear resistant ground contacting surface.
Another feature of the present invention is to provide a light weight boot wherein the shell is molded from EVA and wherein the sole and/or heel have a substantial portion thereof provided with a patterned ground contacting pad formed from one of TPR, rubber or PU.
According to the above features, from a broad aspect, the present invention provides a light weight, waterproof boot comprising an injected molded shell having a sole including a heel portion. The shell is injected molded entirely from EVA (ethylene vinyl acetate). The sole and heel portion each have a substantial portion of an outer surface thereof provided with one or more patterned ground-contacting pads adhesively secured thereto. The patterned ground-contacting pads are each formed from a non-slip material. The ground-contacting pads have gripping formations extending above an outer surface of the sole and heel portion. The ground-contacting pads define flexible wear resistant, non-slip, ground-contacting surfaces for the boot. The pads are formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane).
According to a still further broad aspect of the present invention, there is provided a method of manufacturing an article of footwear in the form of a light - 2a -weight waterproof boot. The method comprises the steps of injection molding a lower boot portion or shell having a sole with a heel portion entirely from light weight EVA
(ethylene vinyl acetate). The method further comprises molding patterned sole and heel pads with gripping formations from one of TPR, rubber or PU. The method further comprises adhesively securing the sole and heel pads to an outer surface of the sole and heel portion, respectively, to produce a boot which has a non-slip, light weight and flexible wear resistant ground contacting surface.
BRIEF DESCRIPTION OF DRAWINGS
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a side view of a boot shell of Figures 1 and 3;
FIG. 2 is a bottom view of Figure 1;
i . . rn .-,......xnreF .ri4.r M.' .===........n Mre. . .r.. . .
FIG. 3 is a bottom view of the patterned ground-contacting pad for the sole portion;
FIG. 4 is a bottom view of the heel ground contacting pad; and FIG. 5 is a side view, partly exploded, showing the construction of a light weight boot provided with patterned pads adhesively secured to both the sole and heel portions thereof.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings and more particularly to Figures 1 and 2, there is shown generally at 10, a shell for a boot, such as the boot 11 shown in Figure 5 and which is constructed in accordance with the present invention. The shell 10, as hereinshown, is a boat-like shell formed by injection molding and has a sole and heel portion 12 and 13, respectively. The shell is molded from EVA (ethylene vinyl acetate). At least the sole portion 12 or the heel portion 13 have an outer surface 12' and 13', respectively, of which a substantial portion thereof is provided with patterned ground engaging pads 14 and 15, respectively, formed as a separate part by injection molding and glued to the outer surfaces 12' and 13'. The patterned pads 14 and 15, as better shown in Figures 3 and 4, are each provided with surface gripping formations 16 which project from the pad base 17.
The pads are formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane) which are non-slip materials which have the feature of retaining their flexibility in cold weather below the freezing point. They also have gripping and wear resistant qualities. A suitable adhesive 18 is disposed on the outer surface of the sole and heel portions or on the rear surface 17' of the pads 17 and 15. This adhesive may be a heat activated adhesive, for .,... ~.~~. .,...
FIG. 4 is a bottom view of the heel ground contacting pad; and FIG. 5 is a side view, partly exploded, showing the construction of a light weight boot provided with patterned pads adhesively secured to both the sole and heel portions thereof.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring now to the drawings and more particularly to Figures 1 and 2, there is shown generally at 10, a shell for a boot, such as the boot 11 shown in Figure 5 and which is constructed in accordance with the present invention. The shell 10, as hereinshown, is a boat-like shell formed by injection molding and has a sole and heel portion 12 and 13, respectively. The shell is molded from EVA (ethylene vinyl acetate). At least the sole portion 12 or the heel portion 13 have an outer surface 12' and 13', respectively, of which a substantial portion thereof is provided with patterned ground engaging pads 14 and 15, respectively, formed as a separate part by injection molding and glued to the outer surfaces 12' and 13'. The patterned pads 14 and 15, as better shown in Figures 3 and 4, are each provided with surface gripping formations 16 which project from the pad base 17.
The pads are formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane) which are non-slip materials which have the feature of retaining their flexibility in cold weather below the freezing point. They also have gripping and wear resistant qualities. A suitable adhesive 18 is disposed on the outer surface of the sole and heel portions or on the rear surface 17' of the pads 17 and 15. This adhesive may be a heat activated adhesive, for .,... ~.~~. .,...
example. Of course, it is within the ambit of the present invention to provide these pads on only one of the heel or sole portions of the shell but it is preferable to have them on both the sole and heel portions to provide a better ground contacting surface.
As shown in Figures 1 and 5, the gripping formations 16 extend above the outer surfaces 12" and 13" of the sole and heel portions of the shell a predetermined distance to provide better gripping when on snow covered or wet surfaces when the boot is to be used as a winter or rain boot. Accordingly, the boot of the present invention has substantially equal gripping and wear resistant characteristics as complete rubber boots but of substantially reduced weight and increased flexibility, particularly in cold weather, below freezing point. The upper 20 of the boot may have an inner liner (not shown) for comfort and insulation.
As shown in Figure 5, various boot designs are possible by designing the upper 20 secured to the top open end 19 of the boat-like shell 10 (as shown in Figure 1), whereby various fashionable designs can be fabricated. Low cut shoes such as shown in Figure 1 may also be provided wherein no upper is secured to the top open end of the shell. The patterned formations 16 can have a multitude of designs.
Summarizing the method of manufacturing the article of footwear 11 in the form of a light weight boot will now be described. It is comprised of the steps of injection molding a lower boot portion or shell 10 including a sole 12 and heel 13 from EVA (ethylene vinyl acetate) A
patterned sole and heel pad 14 and 15, respectively, is molded from one of TPR, PU or rubber and these pads are formed with gripping formations 16 which project from a base 17 of the pads. The pads are then adhesively secured to the .~ .~~~..,.._ heel and sole portions outer surface, respectively, whereby to produce an article of footwear which has a non-slip, light weight and flexible wear resistant ground contacting surface. Such characteristics are very attractive for the manufacturing of winter or rain boots, particularly for infants as the boots are very light weight and comfortable to wear and non-tiring to children while providing the safety feature of having a superior ground gripping surface on ice covered or wet ground or other slippery surfaces.
As shown in Figures 1 and 5, the gripping formations 16 extend above the outer surfaces 12" and 13" of the sole and heel portions of the shell a predetermined distance to provide better gripping when on snow covered or wet surfaces when the boot is to be used as a winter or rain boot. Accordingly, the boot of the present invention has substantially equal gripping and wear resistant characteristics as complete rubber boots but of substantially reduced weight and increased flexibility, particularly in cold weather, below freezing point. The upper 20 of the boot may have an inner liner (not shown) for comfort and insulation.
As shown in Figure 5, various boot designs are possible by designing the upper 20 secured to the top open end 19 of the boat-like shell 10 (as shown in Figure 1), whereby various fashionable designs can be fabricated. Low cut shoes such as shown in Figure 1 may also be provided wherein no upper is secured to the top open end of the shell. The patterned formations 16 can have a multitude of designs.
Summarizing the method of manufacturing the article of footwear 11 in the form of a light weight boot will now be described. It is comprised of the steps of injection molding a lower boot portion or shell 10 including a sole 12 and heel 13 from EVA (ethylene vinyl acetate) A
patterned sole and heel pad 14 and 15, respectively, is molded from one of TPR, PU or rubber and these pads are formed with gripping formations 16 which project from a base 17 of the pads. The pads are then adhesively secured to the .~ .~~~..,.._ heel and sole portions outer surface, respectively, whereby to produce an article of footwear which has a non-slip, light weight and flexible wear resistant ground contacting surface. Such characteristics are very attractive for the manufacturing of winter or rain boots, particularly for infants as the boots are very light weight and comfortable to wear and non-tiring to children while providing the safety feature of having a superior ground gripping surface on ice covered or wet ground or other slippery surfaces.
Claims (7)
1. A light weight waterproof boot comprising an injected molded shell having a sole including a heel portion; said shell being injected molded entirely from EVA
(ethylene vinyl acetate); said sole and heel portion each having a substantial portion of an outer surface thereof provided with one or more patterned ground-contacting pads adhesively secured thereto; said patterned ground-contacting pads each being formed from a non-slip material; said ground-contacting pads having gripping formations extending above an outer surface of said sole and heel portion; said ground-contacting pads defining flexible wear resistant, non-slip, ground-contacting surfaces for said boot; said pads being formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane).
(ethylene vinyl acetate); said sole and heel portion each having a substantial portion of an outer surface thereof provided with one or more patterned ground-contacting pads adhesively secured thereto; said patterned ground-contacting pads each being formed from a non-slip material; said ground-contacting pads having gripping formations extending above an outer surface of said sole and heel portion; said ground-contacting pads defining flexible wear resistant, non-slip, ground-contacting surfaces for said boot; said pads being formed from one of TPR (thermoplastic rubber), rubber or PU (polyurethane).
2. A light weight boot as claimed in claim 1 wherein said boot is a winter boot, said patterned ground-contacting pads retaining their flexibility at temperatures below the freezing point.
3. A light weight boot as claimed in claim 2 wherein said winter boot has an inner liner to provide insulating property for use in cold weather below said freezing point.
4. A light weight boot as claimed in claim 1 wherein said shell is a boat-like shell.
5. A light weight boot as claimed in claim 1 wherein said boot is one of a winter boot or a rain boot.
6. A light weight boot as claimed in claim 2 wherein an upper is secured to an open top end of said injected molded shell.
7. A method of manufacturing an article of footwear in the form of a light weight waterproof boot comprising the steps of:
i) injection molding a lower boot portion or shell having a sole with a heel portion entirely from light weight EVA (ethylene vinyl acetate), ii) molding patterned sole and heel pads with gripping formations from one of TPR, rubber or PU, and iii) adhesively securing said sole and heel pads to an outer surface of said sole and heel portion, respectively, whereby to produce a boot which has a non-slip, light weight and flexible wear resistant ground contacting surface.
i) injection molding a lower boot portion or shell having a sole with a heel portion entirely from light weight EVA (ethylene vinyl acetate), ii) molding patterned sole and heel pads with gripping formations from one of TPR, rubber or PU, and iii) adhesively securing said sole and heel pads to an outer surface of said sole and heel portion, respectively, whereby to produce a boot which has a non-slip, light weight and flexible wear resistant ground contacting surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/681,970 US20080216361A1 (en) | 2007-03-05 | 2007-03-05 | Light weight, non-slip, wear resistant boot |
| US11/681,970 | 2007-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2580927A1 CA2580927A1 (en) | 2008-04-22 |
| CA2580927C true CA2580927C (en) | 2009-05-26 |
Family
ID=39325970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002580927A Expired - Fee Related CA2580927C (en) | 2007-03-05 | 2007-03-06 | Light-weight, non-slip, wear resistant boot |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20080216361A1 (en) |
| CA (1) | CA2580927C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8516721B2 (en) | 2011-01-10 | 2013-08-27 | Saucony Ip Holdings Llc | Articles of footwear |
| EP2984959A4 (en) * | 2013-04-12 | 2017-04-05 | ASICS Corporation | Shoe sole suitable for uneven terrain road |
| CN107973945B (en) * | 2017-12-19 | 2022-04-26 | 中央军委后勤保障部军需装备研究所 | Formula and preparation method of wear-resistant and anti-slippery rubber sole |
| CN210611192U (en) * | 2019-04-03 | 2020-05-26 | 霍尼韦尔国际公司 | Footwear outsole with resistance elements |
| CN111096520B (en) * | 2019-12-31 | 2022-03-25 | 绿钻（中山）科技有限公司 | Anti-slip TPR outsole and preparation method thereof |
| CN111844838A (en) * | 2020-05-26 | 2020-10-30 | 中科丰阳(福建)科技有限公司 | Preparation process of wear-resistant anti-slip sole |
-
2007
- 2007-03-05 US US11/681,970 patent/US20080216361A1/en not_active Abandoned
- 2007-03-06 CA CA002580927A patent/CA2580927C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2580927A1 (en) | 2008-04-22 |
| US20080216361A1 (en) | 2008-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130306 |