CA2188239A1 - Women's insole - Google Patents
Women's insoleInfo
- Publication number
- CA2188239A1 CA2188239A1 CA 2188239 CA2188239A CA2188239A1 CA 2188239 A1 CA2188239 A1 CA 2188239A1 CA 2188239 CA2188239 CA 2188239 CA 2188239 A CA2188239 A CA 2188239A CA 2188239 A1 CA2188239 A1 CA 2188239A1
- Authority
- CA
- Canada
- Prior art keywords
- insole
- foot
- metatarsal
- foot portion
- region
- 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.)
- Abandoned
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A women's insole, especially for women's pumps, i.e. mid- to high-heel shoes is claimed. The insole comprises a) a substantially flat foot portion having a toe region, an arch region and a heel region and having an aperture extending between said toe region and said arch region, wherein said aperture corresponds to the metatarsal of the foot;
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction substantially greater than the upper surface of the footportion;
c) a cushioning layer bonded to the lower surfaces of said metatarsal portion and said foot portion and extending into said toe, arch and heel region of said foot portion.
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction substantially greater than the upper surface of the footportion;
c) a cushioning layer bonded to the lower surfaces of said metatarsal portion and said foot portion and extending into said toe, arch and heel region of said foot portion.
Description
21~8Z39 Patent Case WOMEN'S INSOLE
Background Insoles for women's shoes are known, such as those described in U.S.
Pate,~ts 4,694,590; 4,266,350; 1,926,683; and 1,597,131. Women's pumps, 10 i.e. mid- to high-heel shoes, promote slippage or sliding of the foot into the toe portion of the shoe, due to the high~eel. An approach was sought to provide a comfortable insole for women's shoes that would reduce slippage or sliding of the foot during normal wear.
15 Summary of the Invention The present invention is directed toward a women's insole, comprising:
a) a substantially flat foot portion having a toe region, an arch region and a heel region and having an aperture extending between said toe region and said arch region, wherein said aperture corresponds to the metatarsal of the 20 foot;
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction subst~ntially greater than the upper surface of the footportion;
25 c) a cushioning layer bonded to the lower surfaces of said metatarsal portionand said foot portion and extending into said toe, arch and heel region of said foot portion.
Preferably, the foot portion and said metatarsal portion are each made of leather. Also preferred is that the foot portion has markings or perforations30 designating trimlines. In another preferred embodiment, the cushioning layer is tapered in the toe region. Also preferred is that the insole has a pressure sensitive adhesive affixed to the bottom surface of the cushioning layer.
The present invention has the advantage of providing an insole for use in women's shoes which reduces or minimizes slippage and/or sliding of the foot toward the shoe's forward portion, yet cushions the foot during normal wear.
Another advantage of the present invention is that it provides an insole which reduces movement of the foot toward the toe portion of the shoe, and ~18~239 yet still allows easy insertion of the foot into the shoe and easy removal of the foot therefrom.
In a more preferred embodiment, another advantage of the present invention is that it provides an insole for use in women's shoes that reduces orminimizes crowding and/or cramping of toes in the shoe's toe portion.
Detailed Descri~iGn of the Invention The foot portion and metatarsal portion of the insole can be made of, but not limited to any suitP~ flexible material, such as leather, leather board,reconstituted leather board, vinyl and coagulated urethane. Preferably, the foot portion of the insole is made of a smooth leather and the metatarsal portion is made of a suede leather. The leather can be obtained from calf, cow, sheep, horse, goat, camel, snake or alligator. Preferably the foot portion is cow leather and the metatarsal portion is sheep leather. Also preferred is that the upper surface of the foot portion is substantially flush with the uppersurface of the metatarsal portion. The foot portion and the metatarsal portion can be provided with markings and/or perforations which can serve as omamental features or functional trimlines for cutting or trimming the insole tothe desired shoe size. Markings can be printed, embossed, etched or preformed on the foot portion, the metatarsal portion and/or the bottom of the cushioning layer.
The present insole can be made full length, i.e. to extend the full length of the shoe, so that the toe portion of the insole underlies the wearer's toes.
Alternatively and more preferably, the present insole is less than full length, i.e. the toe region of the insole is shortened so that the pads of the toes lie beyond the forward edge of the insole or foot portion, as shown in Fig. 13.
Decreasing the length of the toe region reduces or minimizes crowding and/or cramping of toes in the shoe's toe portion.
Optionally, a top cover can be bonded to the upper surfaces of the metatarsal and foot portions of the insole to provide the requisite coefficientsof friction at the insole's uppermost surface. The top cover can be selected from, but not limited to knit fabrics such as nylon, polyester or cotton, or to synthetic leather, leather board, vinyl foam, flocked vinyl film, coagulated polyurethane, latex foam on scrim, supported polyurethane foam, laminated polyurethane film or in-mold coatings such as polyurethanes, styrene-butadiene rubber, acrylonitrile-butadiene, acrylonitrile terpolymers and -copolymers, vinyls or other acrylics.
2188~3g The cushioning layer bonded to the underside or lower surfaces of the metatarsal and foot pGIlions can be make of any suitable flexible material which can absorb and/or cushion the shock from the strike of the foot.
Suitable cushioning materials can include any suitable foams, such as but not limited to: cross-linked polyethylene, poly(ethylene-vinyl ~cet~te), polyvinyl chloride, sy,ltl,~tic and natural latex rubbers, neo~.rene, block polymer elastorners of the acrylonitrile-butadien~styrene or styrene-butadiene type, thermopl-~tic elastG",~rs, ethylenepropylene rubbers, silicone elastomers, polystyrene, polyurea or polyurethane, preferably synthetic latex rubber. Non-foam elastomers such as the class of materials known as viscosl~stic polymers, or silicone gels, can also be employed. The density of the cushioning layer can range from about 2-30 pounds per cubic foot, preferably from 1~20 pounds per cubic foot, more preferably about 15 pounds per cubic foot. The cushioning layer can extend to the outside edges of the foot portion, or to any suitable distance from the outside edge, as shown in Fig. 3.
The cushioning layer can be bonded to the foot and metatarsal portions of the insole using any suitable means, such as adhesives which are based on rubber, acrylic, latex or urethanes. Hot melt adhesives or double sided adhesive tape can also be employed.
The bottom of the cushioning layer can be treated with adhesives or materials having a coefficient of friction greater than that of the cushioning layer to provide non-slip or semi-permanent attachment of the insole in the shoe. For example, a high peel, high shear, double sided pressure sensitive adhesive tape, such as an acrylic or natural based rubber adhesive, could be used to fasten the insole to the interior of shoe.
Generally, the upper surface of the metatarsal portion should have a static coefficient of friction substantially greater than the upper surface of the surrounding foot portion. The ratio of the static coefficient of friction for the metatarsal portion to the static coefficient of friction for the foot portion is in the range from about 4 to 2:1 (metatarsal portion:foot portion), preferably fromabout 2.5 to 3:1, most preferably about 2.7:1. Static coefficient of friction for the surfaces can be measured using any suitable method, such as ASTM
Designation D1894-87, "Standard Method for Static and Kinetic Coe~icie,lls of Friction of Plastic Film and Sheeting", published January 1988.
The thicknesses of the metatarsal portion, the foot portion, the cushioning layer, and optional top cover, should be selected to minimize crowding of the foot within the shoe. The thickness of the metatarsal and foot portions of the insole can range from about 10 to about 100 mils, preferably from about 30 to about 40 mils. The thickness of the cushioning layer can 218823g range from about 50 to about 125 mils, preferably from about 70 to about 90 mils.
In the Figures 5 Fig 1. represents a top perspective view of the present insole for use with a right foot.
Fig. 2 represents a top plan view of the insole of Fig. 1.
Fig. 3 represents a bottom plan view of the insole of Fig. 1.
Fig. 4 represents a leR side view of the insole of Fig. 1.
10 Fig. 5 represents a right side view of the insole of Fig 1.
Fig. 6 represents a front view of the insole of Fig. 1.
Fig. 7 represents a rear view of the insole of Fig. 1.
Fig. 8 represents a cross section taken along line 8--8 in Fig. 2.
Fig. 9 represents a cross section taken along line 9--9 in Fig. 2.
15 Fig. 10 represents a cross section taken along line 10--10 in Fig. 2.
Fig. 11 represents a cross section taken along line 11--11 in Fig. 2.
Fig. 12 represents a top plan view of the present insole for use with a left foot.
Fig. 13 represents a side view of a left foot placed upon the insole of Fig 12.
In Fig. 1, insole 2 is shown to have a substantially flat foot portion 20 and a substantially flat metatarsal portion 30. In this embodiment, the upper surface of foot portion 20 is substantially flush with the upper surface of metatarsal portion 30. The upper surface 32 of metatarsal portion 30 has a static coefficient of friction substantially greater than the upper surface 22 of foot portion 20. Foot portion 20 also has a heel region 4, arch region 6, and toe region 8. Aperture 10 in foot portion 20 is located between toe region 8 and arch region 6. Aperture 10 is situated to correspond to the metatarsal of the foot when a foot is placed upon insole 2, as shown in Fig. 13.
In Fig. 2, lines 8--8 is a line taken across the longitudinal dimension of insole 2. Line 9--9 is a line taken across the latitudinal dimension of metatarsal portion 30. Line 10--10 is a line taken across the latitudinal dimension of arch region 6. Line 11--11 is a line taken across the latitudinal dimension of heel region 4. Ornamental perforations or markings 12 can be employed to designate a trim line 13 for trimming insole 2 to the desired shoe size.
In Fig. 3, insole 2 has cushioning layer 14 bonded to the lower surface 24 of foot portion 20 and metatarsal portion 30 (not shown). Cushioning layer 14 extends into the toe 8, arch 6 and heel 4 regions of foot portion 20. In thisembodiment, cushioning layer 14 extends short of the outer edges of insole 218823g 20. In part, the absence of the cushioning layer allows convenient trimming along the ornamental perforations or markings 12 designating trimlines.
Optional adhesive 17 is added to the bottom of cushioning layer 14 to aid in maintaining insole 2 in place in the shoe and to prevent insole 2 from 5 becoming ~I;slo:lge~ when the foot is removed from the shoe. Prior to use, adhesive 17 is covered with a peelable release liner 15 having a tab 19.
In Fig. 4, the left side view of insole 2 shows cushioning layer 14 to be of slJbst~ntially uniform thickness along the length of foot portion 20 having forward edge 26, except at toe region 8, where cushioning layer 14 forms 10 optional taper 16. When insole 2 is in place in a shoe, taper 16 provides more room in the shoe's toe l~o,liGn compared to a non-tapered construction, thus reducing toe crowding and cramping.
In Fig. 5, the right side view of insole 2 shows cushioning layer 14 to be of sul~st~ntially uniform thickness along the length of foot portion 20 having 15 forward edge 26, except at toe region 8, where cushioning layer 14 forms optional taper 16.
In Fig. 6, the front view of insole 2 shows foot portion 20 atop cushioning layer 14.
In Fig. 7, the rear view of insole 2 shows foot portion 20 atop 20 cushioning layer 14.
In Fig. 8 is shown a cross-section along line 8--8 through the longitudinal dimension of insole 2. Metatarsal portion 30 and foot portion 20 lie atop of cushioning layer 14, which forms a taper 16 at toe end 8. Optional ornamental perforation 12 in foot portion 20 is shown at toe end 8. Metatarsal 25 portion 30 is located within the aperture defined by edge 10 in foot portion 20.
In Fig. 9 is shown a cross-section along line 9--9 taken across the latitudinal dimension of metatarsal portion 30. Insole 2 has metatarsal portion 30 and foot portion 20 atop cushioning layer 14. Each side of foot portion 20 is marked with optional perforation 12. Metatarsal portion 30 is located within 30 the aperture defined by edge 10.
In Fig. 10 is shown a cross section along line 10--10 across the latitudinal dimension of arch region 6 in insole 2. Foot portion 20 lies atop cushioning layer 14.
In Fig. 11 is shown a cross section along line 11--11 across the 35 latitudinal dimension of heel region 4. Foot portion 20 lies atop cushioning layer 1 4.
In Fig. 12 is shown an insole for use with a left foot. The insole is substantially a mirror image of the insole of Figs. 1 or 2. In Fig. 12, insole 12 is shown to have metatarsal portion 30 within an aperture defined by edge 10.
'~18~23~
Insole 12 also has foot portion 20 with opliGnal individual perforations 12, which collectively can designate trimlines 13 for trimming insole 2 to the desired shoe size. However, perforations 12a around metatarsal por~ion 30 are for ornamental purposes and are not considered trimlines.
In Fig. 13 is shown a foot 50 resting upon insole 2 for a left foot.
Metatarsal 52 of the foot rests upon the insole's metatarsal portion (not shown) while the heel 54 of the foot rests upon foot portion 20 corresponding to heel region 4. In this embodiment, insole 2 is less than full length, i.e. toe region 8 is shortened so that toe pad 56 lies beyond the forward edge 26 of foot portion 20. Decreasing the length of the toe region and/or taper 16 in cushioning layer 14 re~uces or minimizes crowding and/or cramping of toes in the shoe's toe portion. Cushioning layer 14 bonded to the lower surfaces of the metatarsal portion and the foot portion, cushions the shock from the strike of the foot.
Background Insoles for women's shoes are known, such as those described in U.S.
Pate,~ts 4,694,590; 4,266,350; 1,926,683; and 1,597,131. Women's pumps, 10 i.e. mid- to high-heel shoes, promote slippage or sliding of the foot into the toe portion of the shoe, due to the high~eel. An approach was sought to provide a comfortable insole for women's shoes that would reduce slippage or sliding of the foot during normal wear.
15 Summary of the Invention The present invention is directed toward a women's insole, comprising:
a) a substantially flat foot portion having a toe region, an arch region and a heel region and having an aperture extending between said toe region and said arch region, wherein said aperture corresponds to the metatarsal of the 20 foot;
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction subst~ntially greater than the upper surface of the footportion;
25 c) a cushioning layer bonded to the lower surfaces of said metatarsal portionand said foot portion and extending into said toe, arch and heel region of said foot portion.
Preferably, the foot portion and said metatarsal portion are each made of leather. Also preferred is that the foot portion has markings or perforations30 designating trimlines. In another preferred embodiment, the cushioning layer is tapered in the toe region. Also preferred is that the insole has a pressure sensitive adhesive affixed to the bottom surface of the cushioning layer.
The present invention has the advantage of providing an insole for use in women's shoes which reduces or minimizes slippage and/or sliding of the foot toward the shoe's forward portion, yet cushions the foot during normal wear.
Another advantage of the present invention is that it provides an insole which reduces movement of the foot toward the toe portion of the shoe, and ~18~239 yet still allows easy insertion of the foot into the shoe and easy removal of the foot therefrom.
In a more preferred embodiment, another advantage of the present invention is that it provides an insole for use in women's shoes that reduces orminimizes crowding and/or cramping of toes in the shoe's toe portion.
Detailed Descri~iGn of the Invention The foot portion and metatarsal portion of the insole can be made of, but not limited to any suitP~ flexible material, such as leather, leather board,reconstituted leather board, vinyl and coagulated urethane. Preferably, the foot portion of the insole is made of a smooth leather and the metatarsal portion is made of a suede leather. The leather can be obtained from calf, cow, sheep, horse, goat, camel, snake or alligator. Preferably the foot portion is cow leather and the metatarsal portion is sheep leather. Also preferred is that the upper surface of the foot portion is substantially flush with the uppersurface of the metatarsal portion. The foot portion and the metatarsal portion can be provided with markings and/or perforations which can serve as omamental features or functional trimlines for cutting or trimming the insole tothe desired shoe size. Markings can be printed, embossed, etched or preformed on the foot portion, the metatarsal portion and/or the bottom of the cushioning layer.
The present insole can be made full length, i.e. to extend the full length of the shoe, so that the toe portion of the insole underlies the wearer's toes.
Alternatively and more preferably, the present insole is less than full length, i.e. the toe region of the insole is shortened so that the pads of the toes lie beyond the forward edge of the insole or foot portion, as shown in Fig. 13.
Decreasing the length of the toe region reduces or minimizes crowding and/or cramping of toes in the shoe's toe portion.
Optionally, a top cover can be bonded to the upper surfaces of the metatarsal and foot portions of the insole to provide the requisite coefficientsof friction at the insole's uppermost surface. The top cover can be selected from, but not limited to knit fabrics such as nylon, polyester or cotton, or to synthetic leather, leather board, vinyl foam, flocked vinyl film, coagulated polyurethane, latex foam on scrim, supported polyurethane foam, laminated polyurethane film or in-mold coatings such as polyurethanes, styrene-butadiene rubber, acrylonitrile-butadiene, acrylonitrile terpolymers and -copolymers, vinyls or other acrylics.
2188~3g The cushioning layer bonded to the underside or lower surfaces of the metatarsal and foot pGIlions can be make of any suitable flexible material which can absorb and/or cushion the shock from the strike of the foot.
Suitable cushioning materials can include any suitable foams, such as but not limited to: cross-linked polyethylene, poly(ethylene-vinyl ~cet~te), polyvinyl chloride, sy,ltl,~tic and natural latex rubbers, neo~.rene, block polymer elastorners of the acrylonitrile-butadien~styrene or styrene-butadiene type, thermopl-~tic elastG",~rs, ethylenepropylene rubbers, silicone elastomers, polystyrene, polyurea or polyurethane, preferably synthetic latex rubber. Non-foam elastomers such as the class of materials known as viscosl~stic polymers, or silicone gels, can also be employed. The density of the cushioning layer can range from about 2-30 pounds per cubic foot, preferably from 1~20 pounds per cubic foot, more preferably about 15 pounds per cubic foot. The cushioning layer can extend to the outside edges of the foot portion, or to any suitable distance from the outside edge, as shown in Fig. 3.
The cushioning layer can be bonded to the foot and metatarsal portions of the insole using any suitable means, such as adhesives which are based on rubber, acrylic, latex or urethanes. Hot melt adhesives or double sided adhesive tape can also be employed.
The bottom of the cushioning layer can be treated with adhesives or materials having a coefficient of friction greater than that of the cushioning layer to provide non-slip or semi-permanent attachment of the insole in the shoe. For example, a high peel, high shear, double sided pressure sensitive adhesive tape, such as an acrylic or natural based rubber adhesive, could be used to fasten the insole to the interior of shoe.
Generally, the upper surface of the metatarsal portion should have a static coefficient of friction substantially greater than the upper surface of the surrounding foot portion. The ratio of the static coefficient of friction for the metatarsal portion to the static coefficient of friction for the foot portion is in the range from about 4 to 2:1 (metatarsal portion:foot portion), preferably fromabout 2.5 to 3:1, most preferably about 2.7:1. Static coefficient of friction for the surfaces can be measured using any suitable method, such as ASTM
Designation D1894-87, "Standard Method for Static and Kinetic Coe~icie,lls of Friction of Plastic Film and Sheeting", published January 1988.
The thicknesses of the metatarsal portion, the foot portion, the cushioning layer, and optional top cover, should be selected to minimize crowding of the foot within the shoe. The thickness of the metatarsal and foot portions of the insole can range from about 10 to about 100 mils, preferably from about 30 to about 40 mils. The thickness of the cushioning layer can 218823g range from about 50 to about 125 mils, preferably from about 70 to about 90 mils.
In the Figures 5 Fig 1. represents a top perspective view of the present insole for use with a right foot.
Fig. 2 represents a top plan view of the insole of Fig. 1.
Fig. 3 represents a bottom plan view of the insole of Fig. 1.
Fig. 4 represents a leR side view of the insole of Fig. 1.
10 Fig. 5 represents a right side view of the insole of Fig 1.
Fig. 6 represents a front view of the insole of Fig. 1.
Fig. 7 represents a rear view of the insole of Fig. 1.
Fig. 8 represents a cross section taken along line 8--8 in Fig. 2.
Fig. 9 represents a cross section taken along line 9--9 in Fig. 2.
15 Fig. 10 represents a cross section taken along line 10--10 in Fig. 2.
Fig. 11 represents a cross section taken along line 11--11 in Fig. 2.
Fig. 12 represents a top plan view of the present insole for use with a left foot.
Fig. 13 represents a side view of a left foot placed upon the insole of Fig 12.
In Fig. 1, insole 2 is shown to have a substantially flat foot portion 20 and a substantially flat metatarsal portion 30. In this embodiment, the upper surface of foot portion 20 is substantially flush with the upper surface of metatarsal portion 30. The upper surface 32 of metatarsal portion 30 has a static coefficient of friction substantially greater than the upper surface 22 of foot portion 20. Foot portion 20 also has a heel region 4, arch region 6, and toe region 8. Aperture 10 in foot portion 20 is located between toe region 8 and arch region 6. Aperture 10 is situated to correspond to the metatarsal of the foot when a foot is placed upon insole 2, as shown in Fig. 13.
In Fig. 2, lines 8--8 is a line taken across the longitudinal dimension of insole 2. Line 9--9 is a line taken across the latitudinal dimension of metatarsal portion 30. Line 10--10 is a line taken across the latitudinal dimension of arch region 6. Line 11--11 is a line taken across the latitudinal dimension of heel region 4. Ornamental perforations or markings 12 can be employed to designate a trim line 13 for trimming insole 2 to the desired shoe size.
In Fig. 3, insole 2 has cushioning layer 14 bonded to the lower surface 24 of foot portion 20 and metatarsal portion 30 (not shown). Cushioning layer 14 extends into the toe 8, arch 6 and heel 4 regions of foot portion 20. In thisembodiment, cushioning layer 14 extends short of the outer edges of insole 218823g 20. In part, the absence of the cushioning layer allows convenient trimming along the ornamental perforations or markings 12 designating trimlines.
Optional adhesive 17 is added to the bottom of cushioning layer 14 to aid in maintaining insole 2 in place in the shoe and to prevent insole 2 from 5 becoming ~I;slo:lge~ when the foot is removed from the shoe. Prior to use, adhesive 17 is covered with a peelable release liner 15 having a tab 19.
In Fig. 4, the left side view of insole 2 shows cushioning layer 14 to be of slJbst~ntially uniform thickness along the length of foot portion 20 having forward edge 26, except at toe region 8, where cushioning layer 14 forms 10 optional taper 16. When insole 2 is in place in a shoe, taper 16 provides more room in the shoe's toe l~o,liGn compared to a non-tapered construction, thus reducing toe crowding and cramping.
In Fig. 5, the right side view of insole 2 shows cushioning layer 14 to be of sul~st~ntially uniform thickness along the length of foot portion 20 having 15 forward edge 26, except at toe region 8, where cushioning layer 14 forms optional taper 16.
In Fig. 6, the front view of insole 2 shows foot portion 20 atop cushioning layer 14.
In Fig. 7, the rear view of insole 2 shows foot portion 20 atop 20 cushioning layer 14.
In Fig. 8 is shown a cross-section along line 8--8 through the longitudinal dimension of insole 2. Metatarsal portion 30 and foot portion 20 lie atop of cushioning layer 14, which forms a taper 16 at toe end 8. Optional ornamental perforation 12 in foot portion 20 is shown at toe end 8. Metatarsal 25 portion 30 is located within the aperture defined by edge 10 in foot portion 20.
In Fig. 9 is shown a cross-section along line 9--9 taken across the latitudinal dimension of metatarsal portion 30. Insole 2 has metatarsal portion 30 and foot portion 20 atop cushioning layer 14. Each side of foot portion 20 is marked with optional perforation 12. Metatarsal portion 30 is located within 30 the aperture defined by edge 10.
In Fig. 10 is shown a cross section along line 10--10 across the latitudinal dimension of arch region 6 in insole 2. Foot portion 20 lies atop cushioning layer 14.
In Fig. 11 is shown a cross section along line 11--11 across the 35 latitudinal dimension of heel region 4. Foot portion 20 lies atop cushioning layer 1 4.
In Fig. 12 is shown an insole for use with a left foot. The insole is substantially a mirror image of the insole of Figs. 1 or 2. In Fig. 12, insole 12 is shown to have metatarsal portion 30 within an aperture defined by edge 10.
'~18~23~
Insole 12 also has foot portion 20 with opliGnal individual perforations 12, which collectively can designate trimlines 13 for trimming insole 2 to the desired shoe size. However, perforations 12a around metatarsal por~ion 30 are for ornamental purposes and are not considered trimlines.
In Fig. 13 is shown a foot 50 resting upon insole 2 for a left foot.
Metatarsal 52 of the foot rests upon the insole's metatarsal portion (not shown) while the heel 54 of the foot rests upon foot portion 20 corresponding to heel region 4. In this embodiment, insole 2 is less than full length, i.e. toe region 8 is shortened so that toe pad 56 lies beyond the forward edge 26 of foot portion 20. Decreasing the length of the toe region and/or taper 16 in cushioning layer 14 re~uces or minimizes crowding and/or cramping of toes in the shoe's toe portion. Cushioning layer 14 bonded to the lower surfaces of the metatarsal portion and the foot portion, cushions the shock from the strike of the foot.
Claims (11)
1. A women's insole, comprising:
a) a substantially flat foot portion having a toe region, an arch region and a heel region and having an aperture extending between said toe region and said arch region, wherein said aperture corresponds to the metatarsal of the foot;
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction substantially greater than the upper surface of the footportion;
c) a cushioning layer bonded to the lower surfaces of said metatarsal portion and said foot portion and extending into said toe, arch and heel region of said foot portion.
a) a substantially flat foot portion having a toe region, an arch region and a heel region and having an aperture extending between said toe region and said arch region, wherein said aperture corresponds to the metatarsal of the foot;
b) a substantially flat, metatarsal portion situated within the aperture of saidfoot portion, wherein the upper surface of said metatarsal portion has a static coefficient of friction substantially greater than the upper surface of the footportion;
c) a cushioning layer bonded to the lower surfaces of said metatarsal portion and said foot portion and extending into said toe, arch and heel region of said foot portion.
2. The insole of claim 1 wherein the ratio of the static coefficient of frictionfor the metatarsal portion to the static coefficient of friction for the foot portion is in the range from about 4 to 2:1 (metatarsal portion:foot portion).
3. The insole of claim 1 wherein the ratio of the static coefficient of frictionfor the metatarsal portion to the static coefficient of friction for the foot portion is in the range from about 2.5 to 3:1 (metatarsal portion:foot portion).
4. The insole of claim 1 wherein the ratio of the static coefficient of frictionfor the metatarsal portion to the static coefficient of friction for the foot portion is 2.7:1 (metatarsal portion:foot portion).
5. The insole of claim 1 wherein said foot portion is made of leather.
6. The insole of claim 1 wherein said metatarsal portion is made of leather.
7. The insole of claim 1 wherein said foot portion and said metatarsal portion are each made of leather.
8. The insole of claim 1 wherein said foot portion has markings designating trimlines.
9. The insole of claim 1 wherein said foot portion has perforations designating trimlines.
10. The insole of claim 1 wherein the cushioning layer is tapered in the toe region.
11. The insole of claim 1 further comprising a pressure sensitive adhesive affixed to the bottom surface of said cushioning layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54700895A | 1995-10-23 | 1995-10-23 | |
| US08/547,008 | 1995-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2188239A1 true CA2188239A1 (en) | 1997-04-24 |
Family
ID=24182973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2188239 Abandoned CA2188239A1 (en) | 1995-10-23 | 1996-10-18 | Women's insole |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2188239A1 (en) |
-
1996
- 1996-10-18 CA CA 2188239 patent/CA2188239A1/en not_active Abandoned
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| Date | Code | Title | Description |
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| FZDE | Dead |
Effective date: 20011018 |