CA2095272C - Mid-sole or sole of shoes - Google Patents
Mid-sole or sole of shoesInfo
- Publication number
- CA2095272C CA2095272C CA 2095272 CA2095272A CA2095272C CA 2095272 C CA2095272 C CA 2095272C CA 2095272 CA2095272 CA 2095272 CA 2095272 A CA2095272 A CA 2095272A CA 2095272 C CA2095272 C CA 2095272C
- Authority
- CA
- Canada
- Prior art keywords
- base plate
- cover
- area
- sole
- blades
- 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
- 210000003371 toe Anatomy 0.000 claims abstract description 23
- 230000001965 increasing effect Effects 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 210000002683 foot Anatomy 0.000 claims description 14
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 208000003643 Callosities Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- -1 i.e. Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 210000000431 third toe Anatomy 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
In a shoe sole, a base plate has its top surface formed with a recess with a plurality of slanted blades formed therein. A cover has a recess and an increased thickness portion formed around the recess and extending toward a marginal portion. A fluid is sealed in both the recesses.
In the recess of the cover, fluid shock buffer blades are formed on at least a portion, which is urged by the toes and larger toe roots, the blades being slanted in a direction perpendicular to the longitudinal direction of the cover.
The marginal portion of the cover is fused to the marginal portion of the base plate.
In the recess of the cover, fluid shock buffer blades are formed on at least a portion, which is urged by the toes and larger toe roots, the blades being slanted in a direction perpendicular to the longitudinal direction of the cover.
The marginal portion of the cover is fused to the marginal portion of the base plate.
Description
- ~ 2095272 Mid-sole or Sole of Shoes This invention relates to a mid-sole or a sole of shoes, which seeks to provide shock absorption during walking and also a massage effect owing to excitation of the sole of foot, while providing for comfortable wear. Of course, the invention also is applicable to and covers sandals and the like.
In the prior art, it is well known that absorption of shocks and massaging of the sole of the foot during walking are effective for maint~;ning health. The applicant has earlier proposed a sole (or a mid-sole) for shoes, which comprises a base plate with a recess and a plurality of slanted blades formed therein. A flexible cover with the outer periphery thereof fused to the outer periphery of the top of the base plates has water sealed in the recess (as disclosed in United States patent specification 5,189,816).
When a person wearing shoes with such soles walks, the sealed water moves in the recess to absorb shocks during the walking while providing a stable and comfortable sense of wearing.
In addition, with adequate rigidity of the blades and action of water to alleviate the rigidity, the sole of the foot can be excited continuously with adequate strength while not providing any pain even when the shoes are worn for a long time.
However, shoes using the above sole are subject to leakage of the sealed-in water. From examination, water leaks from a specific portion, i.e., a front end portion adjacent to, for instance, the little to middle toes of the .~
foot. Investigation found the following. Since the cover is formed with a recess having a shape corresponding to the sole of the foot, the base plate portion corresponding to the recess is naturally reduced in thickness, and a portion corresponding to the little to middle toes, particularly to the third toe, is usually strongly pushed down and deformed when the shoe is about to be lifted from the ground. With this force, together with the urging force of the water, the fused portion in the neighborhood of the portion contacted by the little to middle toes, is weakened, which results in the leakage of water.
An object of the invention is to provide a mid-sole or sole for shoes, which can prevent the leakage of sealed water and improve the sense of wearing of shoes.
A feature of the present invention is that the cover has an increased thickness portion formed around its recess portion, thus to reduce the deformation of the marginal portion of the cover around the recess portion thereof caused by concentrated urging force from the toes. This maintains the effect of fusion of the marginal portion and prevents leakage of sealed water reliably and for long time. In addition, another aspect of the invention is that the feeling of contact between the sole of the foot and the cover can be alleviated by the increased thickness portion, thus improving the sense of wearing the shoes. Further, another feature of the present invention resides in that blades formed on a cover portion subject to urging by the toes and enlarged toe ~, roots, has an effect of damp~ning the movement of fluid thus assisting in prevention of leakage of the sealed fluid more completely, more reliably and for longer period of time.
The invention provides, in a mid-sole or sole of shoes, a base plate with a plurality of integral blades, a cover fused to a marginal portion of the base plate, and a fluid sealed in the space defined between the base plate and cover.
The top surface of the base plate is formed with a recess having an area corresponding to the sole of the foot, the blades being slanted toward the recess of the base plate, the cover having an increased thickness portion with a predetermined width formed around the recess of the shape corresponding to the sole of the foot. The base plate and cover have their marginal portions fusedly bonded to each other.
Another aspect of the invention resides in that at least a portion of the cover in the recess thereof, which is pressed by the toes and swollen toe roots, has slanted fluid shock buffer blades exten~ing in a direction perpendicular to the longitudinal direction of the cover.
More particularly, the invention provides a half, mid or full sole for a shoe comprising a base plate of a shape corresponding to a sole of a shoe, having an upper surface provided with a border area and with a recessed area, which recessed area corresponds substantially in shape to the sole of a shoe. A plurality of blades are arranged in the recessed area of the base plate so as to lie substantially parallel to each other and substantially perpendicular to an 20~5272 axis running from the heel to the toe of the shoe, the blades extending in a slanted direction outwardly from the recessed area of the base plate. A cover is provided, with a recessed area corresponding substantially in shape to the sole of a shoe and with a border area which is bonded to the border area of the base plate. A fluid is sealed in the space between the base plate and the cover formed by the recessed area of the base plate and the recessed area of the cover.
An intermediate area is formed around at least a part of the recessed area of the cover so as to be positioned between the recessed area of the cover and the border area of the cover, which intermediate area is of a predetermined width and increases in thickness in a direction ext~n~;ng from the recessed area of the cover to the border area of the cover.
The border area of the base plate has the same shape as the border area of the cover, and the blades are higher than the border area of the base plate. The recessed area of the base plate is formed in only the upper surface of the base plate, each blade has uniformly spaced-apart grooves and the opposite ends of each blade are coupled to the border area of the base plate via webs, the webs being lower than the blades and the border area of the base plate, and the base plate is also provided with an intermediate area formed around at least a part of the recessed area of the base plate so as to be positioned between the recessed area of the base plate and the border area of the base plate, which intermediate area is of a predetermined width and increases in thickness in a direction ex~n~;ng from the recessed area of the base plate to the border area of the base plate.
Now, specific embodiments of the invention will be described, with reference to the accompanying drawings, in which:
Fig. 1 is a front view showing a base plate of a sole of the invention;
Fig. 2 is a front view showing a cover;
Fig. 3 is a developed view taken along line a-a in Fig. l;
Fig. 4 is a front view showing another cover of a sole of the invention;
Fig. 5 is a developed view showing a base plate and cover;
and Fig. 6 is a fragmentary enlarged-scale sectional view showing a base plate and cover in a fused state thereof.
The construction according to the invention roughly comprises a base plate 1, as shown in Fig. 1, with a plurality of integral blades 10, a cover 2, as shown in Fig.
In the prior art, it is well known that absorption of shocks and massaging of the sole of the foot during walking are effective for maint~;ning health. The applicant has earlier proposed a sole (or a mid-sole) for shoes, which comprises a base plate with a recess and a plurality of slanted blades formed therein. A flexible cover with the outer periphery thereof fused to the outer periphery of the top of the base plates has water sealed in the recess (as disclosed in United States patent specification 5,189,816).
When a person wearing shoes with such soles walks, the sealed water moves in the recess to absorb shocks during the walking while providing a stable and comfortable sense of wearing.
In addition, with adequate rigidity of the blades and action of water to alleviate the rigidity, the sole of the foot can be excited continuously with adequate strength while not providing any pain even when the shoes are worn for a long time.
However, shoes using the above sole are subject to leakage of the sealed-in water. From examination, water leaks from a specific portion, i.e., a front end portion adjacent to, for instance, the little to middle toes of the .~
foot. Investigation found the following. Since the cover is formed with a recess having a shape corresponding to the sole of the foot, the base plate portion corresponding to the recess is naturally reduced in thickness, and a portion corresponding to the little to middle toes, particularly to the third toe, is usually strongly pushed down and deformed when the shoe is about to be lifted from the ground. With this force, together with the urging force of the water, the fused portion in the neighborhood of the portion contacted by the little to middle toes, is weakened, which results in the leakage of water.
An object of the invention is to provide a mid-sole or sole for shoes, which can prevent the leakage of sealed water and improve the sense of wearing of shoes.
A feature of the present invention is that the cover has an increased thickness portion formed around its recess portion, thus to reduce the deformation of the marginal portion of the cover around the recess portion thereof caused by concentrated urging force from the toes. This maintains the effect of fusion of the marginal portion and prevents leakage of sealed water reliably and for long time. In addition, another aspect of the invention is that the feeling of contact between the sole of the foot and the cover can be alleviated by the increased thickness portion, thus improving the sense of wearing the shoes. Further, another feature of the present invention resides in that blades formed on a cover portion subject to urging by the toes and enlarged toe ~, roots, has an effect of damp~ning the movement of fluid thus assisting in prevention of leakage of the sealed fluid more completely, more reliably and for longer period of time.
The invention provides, in a mid-sole or sole of shoes, a base plate with a plurality of integral blades, a cover fused to a marginal portion of the base plate, and a fluid sealed in the space defined between the base plate and cover.
The top surface of the base plate is formed with a recess having an area corresponding to the sole of the foot, the blades being slanted toward the recess of the base plate, the cover having an increased thickness portion with a predetermined width formed around the recess of the shape corresponding to the sole of the foot. The base plate and cover have their marginal portions fusedly bonded to each other.
Another aspect of the invention resides in that at least a portion of the cover in the recess thereof, which is pressed by the toes and swollen toe roots, has slanted fluid shock buffer blades exten~ing in a direction perpendicular to the longitudinal direction of the cover.
More particularly, the invention provides a half, mid or full sole for a shoe comprising a base plate of a shape corresponding to a sole of a shoe, having an upper surface provided with a border area and with a recessed area, which recessed area corresponds substantially in shape to the sole of a shoe. A plurality of blades are arranged in the recessed area of the base plate so as to lie substantially parallel to each other and substantially perpendicular to an 20~5272 axis running from the heel to the toe of the shoe, the blades extending in a slanted direction outwardly from the recessed area of the base plate. A cover is provided, with a recessed area corresponding substantially in shape to the sole of a shoe and with a border area which is bonded to the border area of the base plate. A fluid is sealed in the space between the base plate and the cover formed by the recessed area of the base plate and the recessed area of the cover.
An intermediate area is formed around at least a part of the recessed area of the cover so as to be positioned between the recessed area of the cover and the border area of the cover, which intermediate area is of a predetermined width and increases in thickness in a direction ext~n~;ng from the recessed area of the cover to the border area of the cover.
The border area of the base plate has the same shape as the border area of the cover, and the blades are higher than the border area of the base plate. The recessed area of the base plate is formed in only the upper surface of the base plate, each blade has uniformly spaced-apart grooves and the opposite ends of each blade are coupled to the border area of the base plate via webs, the webs being lower than the blades and the border area of the base plate, and the base plate is also provided with an intermediate area formed around at least a part of the recessed area of the base plate so as to be positioned between the recessed area of the base plate and the border area of the base plate, which intermediate area is of a predetermined width and increases in thickness in a direction ex~n~;ng from the recessed area of the base plate to the border area of the base plate.
Now, specific embodiments of the invention will be described, with reference to the accompanying drawings, in which:
Fig. 1 is a front view showing a base plate of a sole of the invention;
Fig. 2 is a front view showing a cover;
Fig. 3 is a developed view taken along line a-a in Fig. l;
Fig. 4 is a front view showing another cover of a sole of the invention;
Fig. 5 is a developed view showing a base plate and cover;
and Fig. 6 is a fragmentary enlarged-scale sectional view showing a base plate and cover in a fused state thereof.
The construction according to the invention roughly comprises a base plate 1, as shown in Fig. 1, with a plurality of integral blades 10, a cover 2, as shown in Fig.
2, overlapped over the base plate and welded to the outer periphery thereof, and water sealed between the base plate 1 and cover 2.
The base plate 1 is formed as one-piece molding of an elastic thermoplastic resin, i.e., polyvinyl chloride. It has an outer shape of the sole of shoes as shown in Fig. 1.
The upper surface of the base plate is a recessed area having a shape corresponding to the sole of a foot as shown in Fig.
1. The recessed area 11 is surrounded by a border area 12 for welding. The border area 12 has an upper portion which _ 5 _ is wider than the rest of it. The wider portion may be cut to suit the size of shoes, and thus it serves as a portion for providing variation to the sole.
The blades 10 are formed in the recessed area 11 of the base plate 1 such that it is integral therewith. They extend in a direction perpendicular to the longitll~;n~l direction of the sole of shoes (i.e., in the transverse direction in Fig.
1). As shown in Fig. 3, they are slanted downward, i.e., toward the heel. They have a height greater than the height of the border area 12. In the completed state of the mid-sole or sole of shoes according to the invention, the blades are urged and curved by a recessed area 21 of the cover 2, thus enhancing the state of close contact between the base plate and cover, while the sealed water can move through webs 13 and grooves lOa. For adjusting the rigidity of the blades, the opposite ends of each blade 10 are coupled to the border area 12 via webs 13, as shown in Fig. 1. The webs have a smaller height than the blades so that water can be moved gently. Each blade 10 has three uniformly spaced-apart grooves lOa. These grooves have such dimensions as to permit gentle movement of the sealed water.
The cover 2 is molded from polyvinyl chloride, the same material as for the base plate 1. It has a recessed area 21 having a shape corresponding to the sole of shoes. It also has a border area 22 surrounding the recessed area 21 and having a predetermined width. The border area 22 has an increased thickness and has the same shape as and is to be bonded by fusing to the border area 12 of the base plate 1.
Like the base plate 1, the border area 22 has a wider upper portion to be cut to the size of shoes. The cover 2 has an increasing thickness intermediate area 23 surrounding the recessed area 21. The intermediate area 23 is formed slantedly with increasing thickness toward the increased thickness border area 22. The intermediate area 23 has to be formed in a portion, to which concentrated urging force is applied, for instance, at least a portion contacted by the toes of a foot. Particularly, a portion contacted by the middle to little toes is important. This portion varies depending on the habit of the person wearing the shoes, and thus the intermediate area 23 is desirably formed over the entire portion contacted by the toes as noted above.
Further, since it is possible that the corners of the boundary between the border area 22 and the recessed area 21 of the cover 2 strikes the sole of a foot to produce a condition commonly termed corns, the intermediate area 23 is desirably formed around the entire edge of the recessed area 21.
The base plate 1 also has an increasing thickness intermediate area 14 around the recessed area 11. This intermediate area 14 is formed such that it is slanted with increasing thickness toward the increased thickness border area 12. This is made so because the lower side walls of a shoe are upwardly flaring, and the side surfaces of the cut such as to provide an upward flaring when finally assembling the sole inside the shoe. It is thus necessary to make the inner side surface of the border area 12 around the recessed area 11 of the base plate 1 also upwardly flaring by providing the intermediate area 14 slanted with increasing thickness toward the increased thickness border area 12.
The border area 22 of the cover 2 is bonded to the border area 12 of the bottom plate 1, the bonding surfaces being fused together by high frequency welding. Then, water is injected into the space defined between the recessed areas 11 and 21 and also between the intermediate areas 14 and 23 through a port (not shown) formed in the border area 12 of 10 the base plate 1 and the border area 22 of the cover 2, and then the port is sealed.
Since the intermediate area 23 is formed with a predetermined width around the recessed area 21 of the cover 2, the cover is less deformed when it is partly concentratedly urged by the toes. Thus, there is no possibility for the sealed water to reduce the sealing force of the bonded surfaces of the border areas 12 and 22.
When the shoes using the sole having the above construction are worn, water gently reciprocates along the 20 spaces between adjacent blades in the transverse direction, i.e., in the longit~ n~l direction of the blades and also gently reciprocates back and forth via the grooves lOa and webs 13, thus absorbing the shocks produced when walking while providing a stable and comfortable sense of wearing.
Further, as the blades 10 are urged, the sole of foot is excited by adequate rigidity provided by the slanted form of the blades. Further, the gentle movement of water noted above has an effect of alleviating the excitement caused by the rigidity of the blades. It is thus possible to massage the sole of a foot continuously without producing any pain even when the shoes are worn for long time.
A different embodiment of the invention will be described with reference to Figs. 4 to 6.
This embodiment has a feature in the structure of the cover. As shown in Fig. 4, in the recessed area 31 of the cover 3 a plurality of (i.e., four in the Figure) blades 30 10 are formed on at least a portion, which is urged by the toes and swelling toe roots. These blades extend in a direction perpendicular to the longit~ in;~l direction of the cover, and they are slanted as shown in Fig. 5.
As shown in Fig. 6, the border area 32 of the cover 3 is bonded to the border area 12 of the base plate 1, with the bonding surfaces fused together by high frequency welding.
Water is injected into the space defined by the recessed areas 11 and 31 and also between the increasing thickness intermediate areas 14 and 33 through an injection port (not 20 shown) provided in the border area 12 of the base plate 1 and the border area 32 of the cover 3, and then the port is sealed.
With the blades 30 formed in the recessed area 31 of the cover 3 and the intermediate area 33 with a predetermined width formed around the recess, the cover is less deformed when it is partly urged concentratedly by the toes. Thus, there is no possibility for the sealed water to reduce the sealing force of the fused surfaces of the border areas 12 _ g _ and 32. Further, when a portion of the cover corresponding to the toes and swelling toe roots is to be urged concentratedly by the blades 30, the movement of water is alleviated by the blades to further alleviate the impact force applied to the fused surfaces of the border areas 12 and 32. The force of sealing the sealed water thus is not reduced. In this way, the blades 30 have an effect of alleviating the impact of water moved as the user wearing the shoes walks step by step.
The base plate 1 is formed as one-piece molding of an elastic thermoplastic resin, i.e., polyvinyl chloride. It has an outer shape of the sole of shoes as shown in Fig. 1.
The upper surface of the base plate is a recessed area having a shape corresponding to the sole of a foot as shown in Fig.
1. The recessed area 11 is surrounded by a border area 12 for welding. The border area 12 has an upper portion which _ 5 _ is wider than the rest of it. The wider portion may be cut to suit the size of shoes, and thus it serves as a portion for providing variation to the sole.
The blades 10 are formed in the recessed area 11 of the base plate 1 such that it is integral therewith. They extend in a direction perpendicular to the longitll~;n~l direction of the sole of shoes (i.e., in the transverse direction in Fig.
1). As shown in Fig. 3, they are slanted downward, i.e., toward the heel. They have a height greater than the height of the border area 12. In the completed state of the mid-sole or sole of shoes according to the invention, the blades are urged and curved by a recessed area 21 of the cover 2, thus enhancing the state of close contact between the base plate and cover, while the sealed water can move through webs 13 and grooves lOa. For adjusting the rigidity of the blades, the opposite ends of each blade 10 are coupled to the border area 12 via webs 13, as shown in Fig. 1. The webs have a smaller height than the blades so that water can be moved gently. Each blade 10 has three uniformly spaced-apart grooves lOa. These grooves have such dimensions as to permit gentle movement of the sealed water.
The cover 2 is molded from polyvinyl chloride, the same material as for the base plate 1. It has a recessed area 21 having a shape corresponding to the sole of shoes. It also has a border area 22 surrounding the recessed area 21 and having a predetermined width. The border area 22 has an increased thickness and has the same shape as and is to be bonded by fusing to the border area 12 of the base plate 1.
Like the base plate 1, the border area 22 has a wider upper portion to be cut to the size of shoes. The cover 2 has an increasing thickness intermediate area 23 surrounding the recessed area 21. The intermediate area 23 is formed slantedly with increasing thickness toward the increased thickness border area 22. The intermediate area 23 has to be formed in a portion, to which concentrated urging force is applied, for instance, at least a portion contacted by the toes of a foot. Particularly, a portion contacted by the middle to little toes is important. This portion varies depending on the habit of the person wearing the shoes, and thus the intermediate area 23 is desirably formed over the entire portion contacted by the toes as noted above.
Further, since it is possible that the corners of the boundary between the border area 22 and the recessed area 21 of the cover 2 strikes the sole of a foot to produce a condition commonly termed corns, the intermediate area 23 is desirably formed around the entire edge of the recessed area 21.
The base plate 1 also has an increasing thickness intermediate area 14 around the recessed area 11. This intermediate area 14 is formed such that it is slanted with increasing thickness toward the increased thickness border area 12. This is made so because the lower side walls of a shoe are upwardly flaring, and the side surfaces of the cut such as to provide an upward flaring when finally assembling the sole inside the shoe. It is thus necessary to make the inner side surface of the border area 12 around the recessed area 11 of the base plate 1 also upwardly flaring by providing the intermediate area 14 slanted with increasing thickness toward the increased thickness border area 12.
The border area 22 of the cover 2 is bonded to the border area 12 of the bottom plate 1, the bonding surfaces being fused together by high frequency welding. Then, water is injected into the space defined between the recessed areas 11 and 21 and also between the intermediate areas 14 and 23 through a port (not shown) formed in the border area 12 of 10 the base plate 1 and the border area 22 of the cover 2, and then the port is sealed.
Since the intermediate area 23 is formed with a predetermined width around the recessed area 21 of the cover 2, the cover is less deformed when it is partly concentratedly urged by the toes. Thus, there is no possibility for the sealed water to reduce the sealing force of the bonded surfaces of the border areas 12 and 22.
When the shoes using the sole having the above construction are worn, water gently reciprocates along the 20 spaces between adjacent blades in the transverse direction, i.e., in the longit~ n~l direction of the blades and also gently reciprocates back and forth via the grooves lOa and webs 13, thus absorbing the shocks produced when walking while providing a stable and comfortable sense of wearing.
Further, as the blades 10 are urged, the sole of foot is excited by adequate rigidity provided by the slanted form of the blades. Further, the gentle movement of water noted above has an effect of alleviating the excitement caused by the rigidity of the blades. It is thus possible to massage the sole of a foot continuously without producing any pain even when the shoes are worn for long time.
A different embodiment of the invention will be described with reference to Figs. 4 to 6.
This embodiment has a feature in the structure of the cover. As shown in Fig. 4, in the recessed area 31 of the cover 3 a plurality of (i.e., four in the Figure) blades 30 10 are formed on at least a portion, which is urged by the toes and swelling toe roots. These blades extend in a direction perpendicular to the longit~ in;~l direction of the cover, and they are slanted as shown in Fig. 5.
As shown in Fig. 6, the border area 32 of the cover 3 is bonded to the border area 12 of the base plate 1, with the bonding surfaces fused together by high frequency welding.
Water is injected into the space defined by the recessed areas 11 and 31 and also between the increasing thickness intermediate areas 14 and 33 through an injection port (not 20 shown) provided in the border area 12 of the base plate 1 and the border area 32 of the cover 3, and then the port is sealed.
With the blades 30 formed in the recessed area 31 of the cover 3 and the intermediate area 33 with a predetermined width formed around the recess, the cover is less deformed when it is partly urged concentratedly by the toes. Thus, there is no possibility for the sealed water to reduce the sealing force of the fused surfaces of the border areas 12 _ g _ and 32. Further, when a portion of the cover corresponding to the toes and swelling toe roots is to be urged concentratedly by the blades 30, the movement of water is alleviated by the blades to further alleviate the impact force applied to the fused surfaces of the border areas 12 and 32. The force of sealing the sealed water thus is not reduced. In this way, the blades 30 have an effect of alleviating the impact of water moved as the user wearing the shoes walks step by step.
Claims (8)
1. A half, mid or full sole for a shoe comprising:
a base plate of a shape corresponding to a sole of a shoe having an upper surface provided with a border area and with a recessed area, which recessed area corresponds substantially in shape to the sole of a shoe;
a plurality of blades arranged in the recessed area of the base plate so as to lie substantially parallel to each other and substantially perpendicular to an axis running from the heel to the toe of the shoe, the blades extending in a slanted direction outwardly from the recessed area of the base plate;
a cover provided with a recessed area corresponding substantially in shape to the sole of a shoe and with a border area which is bonded to the border area of the base plate;
a fluid sealed in the space between the base plate and the cover formed by the recessed area of the base plate and the recessed area of the cover; and an intermediate area formed around at least a part of the recessed area of the cover so as to be positioned between the recessed area of the cover and the border area of the cover, which intermediate area is of a predetermined width and increases in thickness in a direction extending from the recessed area of the cover to the border area of the cover;
wherein the border area of the base plate has the same shape as the border area of the cover, and the blades are higher than the border area of the base plate; and wherein the recessed area of the base plate is formed in only the upper surface of the base plate; each blade has uniformly spaced-apart grooves and the opposite ends of each blade are coupled to the border area of the base plate via webs, the webs being lower than the blades and the border area of the base plate; and the base plate is also provided with an intermediate area formed around at least a part of the recessed area of the base plate so as to be positioned between the recessed area of the base plate and the border area of the base plate, which intermediate area is of a predetermined width and increases in thickness in a direction extending from the recessed area of the base plate to the border area of the base plate.
a base plate of a shape corresponding to a sole of a shoe having an upper surface provided with a border area and with a recessed area, which recessed area corresponds substantially in shape to the sole of a shoe;
a plurality of blades arranged in the recessed area of the base plate so as to lie substantially parallel to each other and substantially perpendicular to an axis running from the heel to the toe of the shoe, the blades extending in a slanted direction outwardly from the recessed area of the base plate;
a cover provided with a recessed area corresponding substantially in shape to the sole of a shoe and with a border area which is bonded to the border area of the base plate;
a fluid sealed in the space between the base plate and the cover formed by the recessed area of the base plate and the recessed area of the cover; and an intermediate area formed around at least a part of the recessed area of the cover so as to be positioned between the recessed area of the cover and the border area of the cover, which intermediate area is of a predetermined width and increases in thickness in a direction extending from the recessed area of the cover to the border area of the cover;
wherein the border area of the base plate has the same shape as the border area of the cover, and the blades are higher than the border area of the base plate; and wherein the recessed area of the base plate is formed in only the upper surface of the base plate; each blade has uniformly spaced-apart grooves and the opposite ends of each blade are coupled to the border area of the base plate via webs, the webs being lower than the blades and the border area of the base plate; and the base plate is also provided with an intermediate area formed around at least a part of the recessed area of the base plate so as to be positioned between the recessed area of the base plate and the border area of the base plate, which intermediate area is of a predetermined width and increases in thickness in a direction extending from the recessed area of the base plate to the border area of the base plate.
2. A half, mid or full sole of a shoe according to claim 1, wherein the intermediate area of the cover is positioned so that it covers at least the area which in use is contacted by the toes of a wearer of the shoe.
3. A half, mid or full sole of a shoe according to claim 1 or 2, wherein the intermediate area of the cover is formed all around the recessed area of the cover.
4. A half, mid or full sole of a shoe according to claim 1, 2 or 3, wherein the recessed area of the cover is provided with a plurality of blades arranged so as to lie substantially parallel to each other and substantially perpendicular to an axis running from the heel to the toe of the shoe and extending in a slanted direction outwardly from the recessed area of the cover.
5. A half, mid or full sole of a shoe according to claim 1, 2, 3 or 4, wherein the base plate and the cover are made of a thermoplastic resin.
6. A half, mid or full sole of a shoe according to claim 1, 2, 3, 4 or 5, wherein the plurality of blades of the base plate are integral with the base plate.
7. A mid-sole or sole for shoes comprising:
a base plate and a cover having the outer shape of the sole;
a recess having a shape corresponding to the sole of a foot, which is formed in the upper face of the base plate and a marginal portion which is formed around at least a part of the recess, wherein the base plate is provided with a increased thickness portion formed around at least a part of the recess of the base plate, (the increased thickness portion being of a predetermined width and increasing in thickness in a direction extending from the recess) to the marginal portion of the base plate;
a plurality of blades formed in the recess of the bottom plate, the blades extending and slanted in a direction perpendicular to the longitudinal direction of the bottom plate, the blades being higher than the marginal portion, and the opposite ends of the each blade being provided with a groove and coupled to the marginal portion via webs, the webs being lower than the blades or the marginal portion:
a recess in the cover being formed in only the down face of the cover with a marginal portion formed around the recess, an increased thickness portion with a predetermined width formed around said recess of the cover, which increases in thickness in a direction extending from the recess to the marginal portion of the cover, the marginal portion of the base plate being bonded to the marginal portion of the cover, and a fluid sealed in the space formed between the bottom plate and the cover.
a base plate and a cover having the outer shape of the sole;
a recess having a shape corresponding to the sole of a foot, which is formed in the upper face of the base plate and a marginal portion which is formed around at least a part of the recess, wherein the base plate is provided with a increased thickness portion formed around at least a part of the recess of the base plate, (the increased thickness portion being of a predetermined width and increasing in thickness in a direction extending from the recess) to the marginal portion of the base plate;
a plurality of blades formed in the recess of the bottom plate, the blades extending and slanted in a direction perpendicular to the longitudinal direction of the bottom plate, the blades being higher than the marginal portion, and the opposite ends of the each blade being provided with a groove and coupled to the marginal portion via webs, the webs being lower than the blades or the marginal portion:
a recess in the cover being formed in only the down face of the cover with a marginal portion formed around the recess, an increased thickness portion with a predetermined width formed around said recess of the cover, which increases in thickness in a direction extending from the recess to the marginal portion of the cover, the marginal portion of the base plate being bonded to the marginal portion of the cover, and a fluid sealed in the space formed between the bottom plate and the cover.
8. The mid-sole or sole for shoes according to claim 7, in which the marginal portion of the base plate is the same height as the marginal portion of the cover, and the base plate and the cover are made of a thermoplastic resin.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-141105 | 1992-05-07 | ||
| JP14110592 | 1992-05-07 | ||
| US9831693A | 1993-04-02 | 1993-04-02 | |
| US5-98316 | 1993-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2095272A1 CA2095272A1 (en) | 1993-11-08 |
| CA2095272C true CA2095272C (en) | 1998-08-11 |
Family
ID=26473413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2095272 Expired - Lifetime CA2095272C (en) | 1992-05-07 | 1993-04-30 | Mid-sole or sole of shoes |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2095272C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815949A (en) * | 1997-06-10 | 1998-10-06 | Sessa; Raymond V. | Footwear insert providing air circulation |
-
1993
- 1993-04-30 CA CA 2095272 patent/CA2095272C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2095272A1 (en) | 1993-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |