CA2277283A1 - Shoe sole with removal insert - Google Patents
Shoe sole with removal insert Download PDFInfo
- Publication number
- CA2277283A1 CA2277283A1 CA002277283A CA2277283A CA2277283A1 CA 2277283 A1 CA2277283 A1 CA 2277283A1 CA 002277283 A CA002277283 A CA 002277283A CA 2277283 A CA2277283 A CA 2277283A CA 2277283 A1 CA2277283 A1 CA 2277283A1
- Authority
- CA
- Canada
- Prior art keywords
- sole
- mobile
- insert
- heel
- mobile portion
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone
-
- 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
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
- A43B13/36—Easily-exchangeable soles
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
- A43B21/26—Resilient heels
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
- A43B21/42—Heels with replaceable or adjustable parts, e.g. top lift
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/0036—Footwear characterised by the shape or the use characterised by a special shape or design
- A43B3/0047—Footwear characterised by the shape or the use characterised by a special shape or design parts having a male and corresponding female profile to fit together, e.g. form-fit
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/06—Running shoes; Track shoes
Abstract
A sport shoe (10) having an upper (12), a sole (14) having at least an outer sole having a mobile portion (24) at least at the heel portion (20) of the sole which is pivotable about a lateral axis forward of the heel portion (20). A midsole insert member (26) is insertable between the mobile portion (24) and the upper (12). The mobile portion includes upper engaging projections (28, 30) cooperating with the upper (12) to prevent the midsole insert (26) from moving laterally relative to the upper (12) when the midsole insert member is introduced between the mobile portion (24) and the upper (12).
Description
WO 98/30120 _ 1 _ _ --~ PCT/CA98/00021 SHOE SOLE WITH REMOVl~~. INSBRT
Technical Field The present invention relates to sport shoes, and more particularly, to replaceable inserts for the sole of a sport shoe.
' Background Art The sport shoe has reached a high level of development in the last twenty years. The basic running shoe, including a relatively soft upper and elastomeric sole, has been fine-tuned to a great degree of specialization. A specific shoe is now available for every sport. Within the sport of running, different designs can be found, whether for jogging or running marathons. Within such specialization, a different shoe can be found for a heavy male runner or for a light female runner. A sole design can also be found for someone who requires support against over-supination or over-pronation.
Such specialization of sport shoe designs has led to a large spectrum of different shoes. For instance, if an amateur runner wishes to go for a light jog of only a few kilometers, he cannot wear his pair of running shoes designed for racing. The heel cushion in the racing shoes will have a greater durometer hardness because the shock to be absorbed will be naturally greater than what is required for a light run. In the latter case, the runner will experience some discomfort since the heel will appear to be too hard. Likewise, a softer heel portion of the heel will seem too soft for a hard competitive run.
In order to satisfy all different types of running, a person would need to own several pairs of running shoes, much like a golfer requires a set of different clubs for use with different approach shots.
However, running shoes are relatively expensive, and such a solution is not practical for the average runner.
SUBSTITUTE SHEET (RULE 26) WO 98130120 _ 2 _ . -- PCTICA98100021 Replaceable sole inserts have been contem-plated for sport shoes. Examples of such shoes are described in U. S. Patent 4,624,061, issued November 25, 1986 to Wezel et al; U. S. Patent 4,942,677, issued July 24, 1990 to Flemming et al; U. S. Patent 4,897,936, issued February 6, 1990 to Fuerst; and U. S.
Patent 5,533,280, issued July 9, 1996 to Halliday.
The above patents describe various methods of replacing different inserts in the sole of a shoe.
In particular, U. S. Patent 4,942,677 describes the use of damping plates in the heel portion of the sole for the purposes of damping the shock absorbing characteristics of the shoe. This patent includes an outsole hinged to the remainder of the sole, and wedge-shaped damping elements are inserted between the outer sole and the upper to provide proper damping or spacing in order to enhance the height of the person wearing the shoe.
U. S. Patent 4,942,677 shows a structure that is best suited for more rigid dress shoes, not modern day sport shoes. Sport shoes generally have a much softer construction. A sport shoe sole con-structed with a heel and replaceable insert as found in U. S. Patent 4,942,677 would tend to be plagued with lateral instability since there is no structure illustrated in the patent to resist the shear forces that might occur in a more violent side sliding movement, such as in basketball or tennis.
Disclosure of the Invention It is an aim of the present invention to provide an improvement to the type of sport shoe construction that permits replaceable sole inserts.
It is a further aim of the present invention to provide a sport shoe construction that includes a removable heel insert with improved lateral stability.
It is a further aim of the present invention to provide a sport shoe with a sole having a heel with SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 3 _ - PCTICA98100021 a replaceable insert that is easily manipulated for a quick change of inserts.
A construction in accordance with the present invention includes a sport shoe having an upper, a sole, at least an outer sole, comprising a toe portion, a metatarsal portion, and a heel portion, the outer sole having a mobile portion at least at the heel portion of the sole being pivotable about a lateral axis, a midsole insert member insertable between the mobile portion and the upper, the mobile portion including upper engaging projections cooperating with the upper to prevent the midsole insert from moving laterally relative to the upper when the midsole insert member is introduced between the mobile portion and the upper.
More specifically, attachment means are provided to secure the mobile portion to the inner sole and sandwich the midsole insert therebetween, and cooperating projection extending between the mobile portion and the midsole insert to restrain at least the mobile portion against lateral movement.
In a more specific embodiment of the present invention, the midsole insert and the outer mobile sole member each have upstanding side walls which, when in place, abut against the upper to provide lateral stability to the midsole insert and the outer mobile sole portion.
In a yet more specific embodiment of the present invention, the upper and the midsole insert include cooperating ribs and grooves having longitudinal components so as to enhance the lateral stability of the midsole insert and the upper when the midsole insert is assembled.
In a still further embodiment of the present invention, the forefoot of the sole is provided with a mobile outer sole portion attached to the plantar area of the toe portion so that the mobile outer forefoot SUBSTITUTE SHEET (RULE 26) WO 98/30120 - 4 __ -- PCT/CA98J00021 sole is hinged in the same manner as the mobile outer heel sole, and a midsole insert can be retained between the mobile forefoot outer sole and the inner sole of the forefoot of the shoe, which will include the metatarsal portion of the shoe.
Other embodiments have been contemplated, including attaching a full-length outsole attached to the toe portion of the upper so that the outsole may be hinged to allow the midsole insert for the forefoot portion as well as the heel portion. A pair of midsole inserts may be provided, including separate forefoot and heel midsole inserts maintained by the full-length outsole member that may be hinged at the toe portion of the upper and removably retained on the sides of the upper.
Thus, it can be seen that the construction of the present invention has improved stability, and particularly lateral stability, as compared to the prior art. All of the components that can move, such as the midsole insert and the outer mobile sole portion, have upward projections when assembled) including side walls, which overlap one another against the sides of the upper to provide lateral stability.
Brief Description of the Drawings Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration, a preferred embodiment thereof, and in which:
Fig. 1 is a perspective view showing a sport shoe including the present invention;
Fig. 2 is a fragmentary perspective view showing a detail of the present invention in a different operative position;
Fig. 3 is an enlarged fragmentary side elevation of the present invention;
Fig. 4 is a vertical cross-section, taken along line 4-4 of Fig. 3;
SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 5 __ - PCT/CA98100021 Fig. 5 is a perspective view, taken from the bottom of another embodiment of the invention, showing various elements in a first operative position;
Fig. 6 is a fragmentary, enlarged, vertical cross-section taken through a portion of the sole of Fig. 5, showing a particular feature of the embodiment shown in Fig. 5 when the elements are in a second operable position;
Fig. 7 is a side elevation of yet another embodiment of the present invention wherein the elements are in a first operative position; and Fig. 8 is a side elevation, partly in cross-section, showing the elements in their second and useful operative position.
Mode for Carrying out the Invention The drawings show a typical sport shoe 10.
The sport shoe 10 has an upper 12 , a sole 14 , and an inner liner 13, as seen in Fig. 4. Generally, the sport shoe has a toe portion 16, a metatarsal area 18, and a heel portion 20.
The sole 14 is made up of a heel counter 22, as seen in Figs. 2 and 4, and a mobile outer sole segment 24, in the area of the heel 20. The remainder of the outer sole is fixed as part of the sole, and thus the mobile outer sole segment 24 is permitted to hinge about an axis extending laterally of the sole in the metatarsal area because of the flexibility of the material of the sole. The sole is generally an elastomeric material.
The heel counter 22 may be made of a separate molded plastic material. It may be formed as a cup which is glued or otherwise fixed to the upper, as shown in Figs. 2 and 4, for instance.
A midsole insert 26 is insertable at the heel 20 between the mobile outer sole 24 and the heel counter 22. The mobile outer sole 24 acts as a cage to SUBSTITUTE SHEET (RULE 26) WO 98130120 _ 6 __ - PCT/CA98/00021 retain the midsole insert 26 in position, as will be described.
The midsole insert 26 may vary in terms of durometer hardness depending on the weight of the user and the type of exercise contemplated. The midsole insert may be made of a polyurethane material of varying densities. Other suitable materials, such as silicone based TPR, may also be used. The midsole insert can also be formed to correct over-pronation or over-supination. In other words, the midsole insert 26 can have different thicknesses or different densities at the inner portion and outer portion thereof. It is also contemplated to have a midsole insert 26 with different damping characteristics in different areas of the midsole and could also be made of different materials with different characteristics.
The mobile outer sole segment 24 is provided with a bottom wall 25 and upstanding side wall portions 28 and 30. These upstanding side walls 28 and 30 include large openings 36 on either side wall 28 or 30.
The openings 36 define upstanding columns 33 and a top member 32.
The midsole insert 26 includes a bottom wall 27 and side walls 29 and 31. The side walls 29 and 31 have lateral projections 42 which correspond to the openings 36 in the side walls 28 and 30 of the mobile outer sole 24. In fact, the projections 42 correspond to the lower portion of the openings 36, the upper portions of these openings being filled by the ledges 38 on the upstanding side walls 41 and 43 which project upwardly from the heel counter 22. Overlapping projections 40 and 44 are also provided on the upstanding walls 41 and 43 of counter 22, and are adapted to overlap the top member 32 of the mobile outer sole 24 when it is fixed in place. A projection 46 extends rearwardly of the midsole insert 26, as shown in the drawings, and mates with corresponding SUBSTITUTE SHEET (RULE 26) WO 98130120 - 7 - . ~ PCT/CA98/00021 portions of the mobile outer sole 24 and the heel counter 22.
A U-shaped rib 48 is molded in the heel counter 22 and projects downwardly, as shown in Figs. 2 and 4. A corresponding mating U-shaped groove 50 is ' defined in the bottom wall 27 of the midsole insert 26 to receive the rib 48, as shown in Fig. 4.
In operation, when it is required to provide a selected midsole insert 26, the shoe is in the position as shown in Fig. 2. Thus, a midsole insert 26 is selected, depending on the runner's particular needs, and is placed between the mobile outer sole segment 24 and heel counter 22 with the rib 48 located within the groove 50. The mobile outer sole 24 would then be closed over the midsole insert 26, and the member 32, of mobile outer sole 24, would be clamped into the space between the ledges 38 and the overlapping retainer members 40 and 44 respectively.
Likewise, the lateral projections 42 on the upstanding side walls 29 and 31 of the midsole insert would project out of the openings 36, filling out the space of opening 36 with the ledges 38. Projection 46 would also fill out the space left at the rear of the shoe.
Thus, a secure and laterally stable assembly would result since the rib 48 engages the groove 50 in the midsole insert 26 while the midsole insert has upstanding side walls 29 and 31 abutting against the sides of the heel counter 22. The mobile outer sole 24 also has upstanding side walls 28 and 30 which engage against the upstanding side walls 29 and 31 of the midsole insert 26 and the side walls 41 and 43 of the heel counter 22.
Referring now to the embodiment shown in Figs. 5 and 6, all of the reference numerals identifying elements which correspond to the elements in Figs. 1 to 4 have been raised by 100.
SUBSTITUTE SHEET (RULE 26) WO 98/30120 - 8 _ _ ~ PCT/CA98/00021 The sport shoe lI0 is shown having an upper 112 and a sole 114.
Starting with the heel portion 120, there is shown a counter 122 which is an injection-molded U
shaped cup having side walls 141 and 143 and a horse shoe rib 148 on the bottom surface thereof . In this embodiment, the mid-sole insert 126 is shown having an elastomeric wear-sole 154 glued to the insert 126. The wear-sole includes lugs 152 which project downwardly therefrom. The mobile outer sole member 124 is similar to the mobile outer sole member 24 of the embodiment shown in Figs. 1 through 4 but includes openings 150.
As shown in Fig. 6, once the mid-sole insert 126 is in position between the mobile outer sole 124 and the counter 122, the lugs 152 will project through the openings 150 in the mobile outer sole 124.
This has a great advantage in that once the lugs are worn out, it is merely the inserts that must be changed and not the complete sport shoe. Generally, serious runners become attached to a particular running shoe, but the running shoe must be discarded after a short period of time because of excessive wear on the wear-sole. By providing the wear-sole 154 on the mid-sole insert 126, as shown in the embodiment of Figs. 5 and 6, the upper and generally the shoe can be continued to be worn, and as the wear-soles wear out, they are exchanged for newer ones along with the mid-sole insert.
The embodiment in Fig. 5 also shows a mid sole insert I66 to be provided in the forefoot portion of the sport shoe. Thus, an injection-molded cup 162, similar to the counter 122, is located in the metatarsal and toe area and glued to the upper. The cup 162 would also have a rib 168 for engaging with a mating groove in the mid-sole 166 (not shown). The horseshoe-shaped edge 170 of the cutout portion in the SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 9 _ _ PCTICA98/00021 cup 162 can also mate with a similar projection (not shown) on the mid-sole insert 166.
Thus, the mobile outer sole 160, which includes a lower wall 165, openings 170, adapted to receive the lugs 174 on the mid-sole 166, also includes upstanding side walls 167 and 168 with members 182 adapted to be engaged in the hook-like ledge 169 on the cup 162. The overhanging ledge 186 on the cup 162 will also retain the member 182.
Figs. 7 and 8 show yet another embodiment in which the elements corresponding to the elements in Figs. 5 and 6 have been raised by 200.
The sport shoe in Figs. 7 and 8 is shown schematically where the mobile out-sole 224 is a one piece member which covers both the heel area 220 and the toe area. In this case, the mobile out-sole 224 would be fixed to the upper at the toe portion where indicated at 284. The mid-sole inserts 226 and 266 are similar to those shown in Figs. 1 to 4 or the embodiment of Figs. 5 and 6 but are shown here schematically. They would be held against the counter 222 and the cup 262 by means of the members 232 and 282 and will engage the hook-like projections 238, 238a, 269, and 269a in the same manner as that described with the earlier embodiments.
SUBSTITUTE SHEET (RULE 26)
Technical Field The present invention relates to sport shoes, and more particularly, to replaceable inserts for the sole of a sport shoe.
' Background Art The sport shoe has reached a high level of development in the last twenty years. The basic running shoe, including a relatively soft upper and elastomeric sole, has been fine-tuned to a great degree of specialization. A specific shoe is now available for every sport. Within the sport of running, different designs can be found, whether for jogging or running marathons. Within such specialization, a different shoe can be found for a heavy male runner or for a light female runner. A sole design can also be found for someone who requires support against over-supination or over-pronation.
Such specialization of sport shoe designs has led to a large spectrum of different shoes. For instance, if an amateur runner wishes to go for a light jog of only a few kilometers, he cannot wear his pair of running shoes designed for racing. The heel cushion in the racing shoes will have a greater durometer hardness because the shock to be absorbed will be naturally greater than what is required for a light run. In the latter case, the runner will experience some discomfort since the heel will appear to be too hard. Likewise, a softer heel portion of the heel will seem too soft for a hard competitive run.
In order to satisfy all different types of running, a person would need to own several pairs of running shoes, much like a golfer requires a set of different clubs for use with different approach shots.
However, running shoes are relatively expensive, and such a solution is not practical for the average runner.
SUBSTITUTE SHEET (RULE 26) WO 98130120 _ 2 _ . -- PCTICA98100021 Replaceable sole inserts have been contem-plated for sport shoes. Examples of such shoes are described in U. S. Patent 4,624,061, issued November 25, 1986 to Wezel et al; U. S. Patent 4,942,677, issued July 24, 1990 to Flemming et al; U. S. Patent 4,897,936, issued February 6, 1990 to Fuerst; and U. S.
Patent 5,533,280, issued July 9, 1996 to Halliday.
The above patents describe various methods of replacing different inserts in the sole of a shoe.
In particular, U. S. Patent 4,942,677 describes the use of damping plates in the heel portion of the sole for the purposes of damping the shock absorbing characteristics of the shoe. This patent includes an outsole hinged to the remainder of the sole, and wedge-shaped damping elements are inserted between the outer sole and the upper to provide proper damping or spacing in order to enhance the height of the person wearing the shoe.
U. S. Patent 4,942,677 shows a structure that is best suited for more rigid dress shoes, not modern day sport shoes. Sport shoes generally have a much softer construction. A sport shoe sole con-structed with a heel and replaceable insert as found in U. S. Patent 4,942,677 would tend to be plagued with lateral instability since there is no structure illustrated in the patent to resist the shear forces that might occur in a more violent side sliding movement, such as in basketball or tennis.
Disclosure of the Invention It is an aim of the present invention to provide an improvement to the type of sport shoe construction that permits replaceable sole inserts.
It is a further aim of the present invention to provide a sport shoe construction that includes a removable heel insert with improved lateral stability.
It is a further aim of the present invention to provide a sport shoe with a sole having a heel with SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 3 _ - PCTICA98100021 a replaceable insert that is easily manipulated for a quick change of inserts.
A construction in accordance with the present invention includes a sport shoe having an upper, a sole, at least an outer sole, comprising a toe portion, a metatarsal portion, and a heel portion, the outer sole having a mobile portion at least at the heel portion of the sole being pivotable about a lateral axis, a midsole insert member insertable between the mobile portion and the upper, the mobile portion including upper engaging projections cooperating with the upper to prevent the midsole insert from moving laterally relative to the upper when the midsole insert member is introduced between the mobile portion and the upper.
More specifically, attachment means are provided to secure the mobile portion to the inner sole and sandwich the midsole insert therebetween, and cooperating projection extending between the mobile portion and the midsole insert to restrain at least the mobile portion against lateral movement.
In a more specific embodiment of the present invention, the midsole insert and the outer mobile sole member each have upstanding side walls which, when in place, abut against the upper to provide lateral stability to the midsole insert and the outer mobile sole portion.
In a yet more specific embodiment of the present invention, the upper and the midsole insert include cooperating ribs and grooves having longitudinal components so as to enhance the lateral stability of the midsole insert and the upper when the midsole insert is assembled.
In a still further embodiment of the present invention, the forefoot of the sole is provided with a mobile outer sole portion attached to the plantar area of the toe portion so that the mobile outer forefoot SUBSTITUTE SHEET (RULE 26) WO 98/30120 - 4 __ -- PCT/CA98J00021 sole is hinged in the same manner as the mobile outer heel sole, and a midsole insert can be retained between the mobile forefoot outer sole and the inner sole of the forefoot of the shoe, which will include the metatarsal portion of the shoe.
Other embodiments have been contemplated, including attaching a full-length outsole attached to the toe portion of the upper so that the outsole may be hinged to allow the midsole insert for the forefoot portion as well as the heel portion. A pair of midsole inserts may be provided, including separate forefoot and heel midsole inserts maintained by the full-length outsole member that may be hinged at the toe portion of the upper and removably retained on the sides of the upper.
Thus, it can be seen that the construction of the present invention has improved stability, and particularly lateral stability, as compared to the prior art. All of the components that can move, such as the midsole insert and the outer mobile sole portion, have upward projections when assembled) including side walls, which overlap one another against the sides of the upper to provide lateral stability.
Brief Description of the Drawings Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, showing by way of illustration, a preferred embodiment thereof, and in which:
Fig. 1 is a perspective view showing a sport shoe including the present invention;
Fig. 2 is a fragmentary perspective view showing a detail of the present invention in a different operative position;
Fig. 3 is an enlarged fragmentary side elevation of the present invention;
Fig. 4 is a vertical cross-section, taken along line 4-4 of Fig. 3;
SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 5 __ - PCT/CA98100021 Fig. 5 is a perspective view, taken from the bottom of another embodiment of the invention, showing various elements in a first operative position;
Fig. 6 is a fragmentary, enlarged, vertical cross-section taken through a portion of the sole of Fig. 5, showing a particular feature of the embodiment shown in Fig. 5 when the elements are in a second operable position;
Fig. 7 is a side elevation of yet another embodiment of the present invention wherein the elements are in a first operative position; and Fig. 8 is a side elevation, partly in cross-section, showing the elements in their second and useful operative position.
Mode for Carrying out the Invention The drawings show a typical sport shoe 10.
The sport shoe 10 has an upper 12 , a sole 14 , and an inner liner 13, as seen in Fig. 4. Generally, the sport shoe has a toe portion 16, a metatarsal area 18, and a heel portion 20.
The sole 14 is made up of a heel counter 22, as seen in Figs. 2 and 4, and a mobile outer sole segment 24, in the area of the heel 20. The remainder of the outer sole is fixed as part of the sole, and thus the mobile outer sole segment 24 is permitted to hinge about an axis extending laterally of the sole in the metatarsal area because of the flexibility of the material of the sole. The sole is generally an elastomeric material.
The heel counter 22 may be made of a separate molded plastic material. It may be formed as a cup which is glued or otherwise fixed to the upper, as shown in Figs. 2 and 4, for instance.
A midsole insert 26 is insertable at the heel 20 between the mobile outer sole 24 and the heel counter 22. The mobile outer sole 24 acts as a cage to SUBSTITUTE SHEET (RULE 26) WO 98130120 _ 6 __ - PCT/CA98/00021 retain the midsole insert 26 in position, as will be described.
The midsole insert 26 may vary in terms of durometer hardness depending on the weight of the user and the type of exercise contemplated. The midsole insert may be made of a polyurethane material of varying densities. Other suitable materials, such as silicone based TPR, may also be used. The midsole insert can also be formed to correct over-pronation or over-supination. In other words, the midsole insert 26 can have different thicknesses or different densities at the inner portion and outer portion thereof. It is also contemplated to have a midsole insert 26 with different damping characteristics in different areas of the midsole and could also be made of different materials with different characteristics.
The mobile outer sole segment 24 is provided with a bottom wall 25 and upstanding side wall portions 28 and 30. These upstanding side walls 28 and 30 include large openings 36 on either side wall 28 or 30.
The openings 36 define upstanding columns 33 and a top member 32.
The midsole insert 26 includes a bottom wall 27 and side walls 29 and 31. The side walls 29 and 31 have lateral projections 42 which correspond to the openings 36 in the side walls 28 and 30 of the mobile outer sole 24. In fact, the projections 42 correspond to the lower portion of the openings 36, the upper portions of these openings being filled by the ledges 38 on the upstanding side walls 41 and 43 which project upwardly from the heel counter 22. Overlapping projections 40 and 44 are also provided on the upstanding walls 41 and 43 of counter 22, and are adapted to overlap the top member 32 of the mobile outer sole 24 when it is fixed in place. A projection 46 extends rearwardly of the midsole insert 26, as shown in the drawings, and mates with corresponding SUBSTITUTE SHEET (RULE 26) WO 98130120 - 7 - . ~ PCT/CA98/00021 portions of the mobile outer sole 24 and the heel counter 22.
A U-shaped rib 48 is molded in the heel counter 22 and projects downwardly, as shown in Figs. 2 and 4. A corresponding mating U-shaped groove 50 is ' defined in the bottom wall 27 of the midsole insert 26 to receive the rib 48, as shown in Fig. 4.
In operation, when it is required to provide a selected midsole insert 26, the shoe is in the position as shown in Fig. 2. Thus, a midsole insert 26 is selected, depending on the runner's particular needs, and is placed between the mobile outer sole segment 24 and heel counter 22 with the rib 48 located within the groove 50. The mobile outer sole 24 would then be closed over the midsole insert 26, and the member 32, of mobile outer sole 24, would be clamped into the space between the ledges 38 and the overlapping retainer members 40 and 44 respectively.
Likewise, the lateral projections 42 on the upstanding side walls 29 and 31 of the midsole insert would project out of the openings 36, filling out the space of opening 36 with the ledges 38. Projection 46 would also fill out the space left at the rear of the shoe.
Thus, a secure and laterally stable assembly would result since the rib 48 engages the groove 50 in the midsole insert 26 while the midsole insert has upstanding side walls 29 and 31 abutting against the sides of the heel counter 22. The mobile outer sole 24 also has upstanding side walls 28 and 30 which engage against the upstanding side walls 29 and 31 of the midsole insert 26 and the side walls 41 and 43 of the heel counter 22.
Referring now to the embodiment shown in Figs. 5 and 6, all of the reference numerals identifying elements which correspond to the elements in Figs. 1 to 4 have been raised by 100.
SUBSTITUTE SHEET (RULE 26) WO 98/30120 - 8 _ _ ~ PCT/CA98/00021 The sport shoe lI0 is shown having an upper 112 and a sole 114.
Starting with the heel portion 120, there is shown a counter 122 which is an injection-molded U
shaped cup having side walls 141 and 143 and a horse shoe rib 148 on the bottom surface thereof . In this embodiment, the mid-sole insert 126 is shown having an elastomeric wear-sole 154 glued to the insert 126. The wear-sole includes lugs 152 which project downwardly therefrom. The mobile outer sole member 124 is similar to the mobile outer sole member 24 of the embodiment shown in Figs. 1 through 4 but includes openings 150.
As shown in Fig. 6, once the mid-sole insert 126 is in position between the mobile outer sole 124 and the counter 122, the lugs 152 will project through the openings 150 in the mobile outer sole 124.
This has a great advantage in that once the lugs are worn out, it is merely the inserts that must be changed and not the complete sport shoe. Generally, serious runners become attached to a particular running shoe, but the running shoe must be discarded after a short period of time because of excessive wear on the wear-sole. By providing the wear-sole 154 on the mid-sole insert 126, as shown in the embodiment of Figs. 5 and 6, the upper and generally the shoe can be continued to be worn, and as the wear-soles wear out, they are exchanged for newer ones along with the mid-sole insert.
The embodiment in Fig. 5 also shows a mid sole insert I66 to be provided in the forefoot portion of the sport shoe. Thus, an injection-molded cup 162, similar to the counter 122, is located in the metatarsal and toe area and glued to the upper. The cup 162 would also have a rib 168 for engaging with a mating groove in the mid-sole 166 (not shown). The horseshoe-shaped edge 170 of the cutout portion in the SUBSTITUTE SHEET (RULE 26) WO 98/30120 _ 9 _ _ PCTICA98/00021 cup 162 can also mate with a similar projection (not shown) on the mid-sole insert 166.
Thus, the mobile outer sole 160, which includes a lower wall 165, openings 170, adapted to receive the lugs 174 on the mid-sole 166, also includes upstanding side walls 167 and 168 with members 182 adapted to be engaged in the hook-like ledge 169 on the cup 162. The overhanging ledge 186 on the cup 162 will also retain the member 182.
Figs. 7 and 8 show yet another embodiment in which the elements corresponding to the elements in Figs. 5 and 6 have been raised by 200.
The sport shoe in Figs. 7 and 8 is shown schematically where the mobile out-sole 224 is a one piece member which covers both the heel area 220 and the toe area. In this case, the mobile out-sole 224 would be fixed to the upper at the toe portion where indicated at 284. The mid-sole inserts 226 and 266 are similar to those shown in Figs. 1 to 4 or the embodiment of Figs. 5 and 6 but are shown here schematically. They would be held against the counter 222 and the cup 262 by means of the members 232 and 282 and will engage the hook-like projections 238, 238a, 269, and 269a in the same manner as that described with the earlier embodiments.
SUBSTITUTE SHEET (RULE 26)
Claims (20)
1. A sport shoe having an upper, a sole having at least an outer sole, and comprising a toe portion, a metatarsal portion, and a heel portion, the outer sole having a mobile portion, the mobile portion being hinged about a lateral axis forward of the heel portion for movement between a closed position and an open position, and an interchangeable sole insert insertable between the mobile portion and the upper, characterized in that the mobile portion includes releasable upper attachment members for releasably securing the mobile portion to complementary attachment members on the upper whereby the interchangeable sole insert will be held between the mobile portion and the upper when the mobile portion is in the closed position, and complementary convex and concave engaging projections provided on the sole insert, the mobile portion, and the upper in order to prevent the sole insert from moving laterally relative to the upper when said mobile portion is in the closed position.
2. A sport shoe as defined in claim 1, wherein the sole insert member is selected from a plastics material and having different densities to provide varying damping of the shoe.
3. A sport shoe as defined in claim 1, wherein said complementary convex and concave engaging projections include a rib in one of the upper member and sole insert, wherein the rib and groove have at least a longitudinal component relative to the shoe to resist lateral movement of the sole insert.
4. A sport shoe as defined in claim 1, wherein the mobile portion is at least at the heel portion of the sole, and the attachment means between the upper and the mobile portion include side walls on the mobile portion abutting against the sides of the upper.
5. A sport shoe as defined in claim 4, wherein the mobile portion includes upstanding side walls adapted to engage against the side walls of the upper in the heel counter portion of the upper, the attachment means including the upper heel counter portion having upstanding side wall portions with snap engagement means adapted to receive portions of the upstanding side walls of the mobile portion so as to retain the mobile portion in position sandwiching the sole insert against the heel counter portion.
6. A sport shoe as defined in claim 5, wherein the side walls of the mobile portion include at least an opening on each side wall, the side walls defining vertical members and a top member surrounding the opening, the side walls of the heel counter of the upper including a ledge member and a retaining member spaced upwardly from the ledge member such that, when the upper member of the mobile portion is placed between the ledge member and the retaining member, the retaining member and ledge member define a neck which is smaller than the thickness of the upper member such that the upper member must be snapped into the area between the ledge and the retaining member to thus lock the mobile member in place.
7. A sport shoe as defined in claim 6, wherein the sole insert includes lateral projections extending from the side walls thereof which engage within the opening defined in the side walls of the mobile portion in order to fill the opening along with the ledge portion.
8. A sport shoe as defined in claim 1, wherein the mobile portion is at least at the heel portion of the sole and has upstanding side walls defining openings therein, the side walls each defining vertical members and a top member surrounding the opening, the side walls of the heel counter of the upper including a ledge member and a retaining member spaced upwardly from the ledge member such that, when the upper member of the mobile portion is placed between the ledge member and the retaining member, the retaining member and the ledge member define a neck which is smaller than the thickness of the upper member such that the upper member must be snapped into the area between the ledge and the retaining member to thus lock the mobile portion in place.
9. A sport shoe having an upper, a sole having at least an outer sole, and comprising a toe portion, a metatarsal portion, and a heel portion, the outer sole having a first mobile portion at the heel portion of the sole which is pivotable about a lateral axis forward of the heel portion, a second mobile portion plantar to the toe and metatarsal portions of the sole and pivotable about a lateral axis forward of the toe portion, a first sole insert member insertable between the first mobile portion and the upper, a second sole insert member insertable between the second mobile portion and the upper such that selective soles can be utilized for both the forefoot and the heel portion of the sole of the sport shoe.
10. A sport shoe as defined in claim 9, wherein a wear-sole is mounted to the plantar surface of each sole insert, and the wear-sole is provided with ground engaging lugs extending from the wear-sole, and wherein the mobile outer sole portion is provided with openings corresponding to the ground engaging lugs such that, when the sole insert is mounted between the mobile outer sole and the upper, the ground engaging lugs project through the openings in the mobile outer-sole portion.
11. A sport shoe as defined in claim 1, wherein the mobile portion is at the heel portion of the sole and a second mobile portion of the outer sole is pivotable about a lateral axis forward of the toe portion and a second sole insert is insertable at the toe and metatarsal portion of the sole between the mobile outer sole and the upper in addition to the sole insert at the heel portion thereof.
12. A sport shoe having an upper and a sole, the shoe comprising a toe portion, a metatarsal portion and a heel portion, the sole having at least one mobile portion, the mobile portion being hinged about a lateral axis forward of the heel portion for movement between closed and open positions, an interchangeable sole insert insertable between the mobile portion and the upper when the mobile portion is in the open position, characterized in that a first location is provided on both the insert and the upper and a second location is provided on the mobile portion, a plurality of projections being provided in the first location with a mating hole being defined in the second location, the projections being insertable into the mating hole to thereby hold the mobile portion in the closed position.
13. The sport shoe as defined in claim 12, wherein both the insert and the upper having at least one of the plurality of projections thereon.
14. The sport shoe as defined in claim 12, wherein the insert is selected from a plastics material and different interchangeable sole inserts have different densities to provide selected damping characteristics to the heel portion.
15. The sport shoe as defined in claim 12, further comprising:
a rib in one of the upper and insert; and a complementary groove in the other of the upper and insert, lateral movement of the insert being resisted when the rib is inserted in the groove.
a rib in one of the upper and insert; and a complementary groove in the other of the upper and insert, lateral movement of the insert being resisted when the rib is inserted in the groove.
16. The sport shoe as defined in claim 12, further comprising:
a heel counter provided on the upper, the plurality of projections being at the first location with at least one of the projections being on the heel counter; and a retaining member provided on the heel counter, the retaining member being spaced upwardly from the at least one projection on the heel counter, the mating hole being defined in part by vertical members and a top member on side walls of the mobile portion, the top member of the mobile portion being snapped between the at least one projection on the heel counter and the retaining member in order to lock the mobile portion in the closed position.
a heel counter provided on the upper, the plurality of projections being at the first location with at least one of the projections being on the heel counter; and a retaining member provided on the heel counter, the retaining member being spaced upwardly from the at least one projection on the heel counter, the mating hole being defined in part by vertical members and a top member on side walls of the mobile portion, the top member of the mobile portion being snapped between the at least one projection on the heel counter and the retaining member in order to lock the mobile portion in the closed position.
17. The sport shoe as defined in claim 16, wherein the at least one projection on the heel counter and another projection on the insert are simultaneously inserted into the mating hole when the mobile portion is locked in the closed position and wherein the top member of the mobile portion is removed from between the at least one projection on the heel counter and the retaining member when the mobile portion is in the open position.
18. The sport shoe as defined in claim 12, wherein the insert has a medial and a lateral portion and the medial portion includes a different thickness relative to the lateral portion in order to compensate for over-pronation or over-supination.
19. The sport shoe as defined in claim 12, wherein the insert has different densities in different portions thereof for different damping characteristics in different portions of the heel portion.
20. The sport shoe as defined in claim 12, wherein the insert has different materials in different portions thereof to obtain different sole characteristics.
Applications Claiming Priority (3)
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US08/783,830 US5799417A (en) | 1997-01-13 | 1997-01-13 | Shoe sole with removal insert |
US08/783,830 | 1997-01-13 | ||
PCT/CA1998/000021 WO1998030120A1 (en) | 1997-01-13 | 1998-01-13 | Shoe sole with removal insert |
Publications (1)
Publication Number | Publication Date |
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CA2277283A1 true CA2277283A1 (en) | 1998-07-16 |
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CA002277283A Abandoned CA2277283A1 (en) | 1997-01-13 | 1998-01-13 | Shoe sole with removal insert |
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EP (1) | EP0952777A1 (en) |
AU (1) | AU5546598A (en) |
CA (1) | CA2277283A1 (en) |
WO (1) | WO1998030120A1 (en) |
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-
1997
- 1997-01-13 US US08/783,830 patent/US5799417A/en not_active Expired - Fee Related
-
1998
- 1998-01-13 AU AU55465/98A patent/AU5546598A/en not_active Abandoned
- 1998-01-13 WO PCT/CA1998/000021 patent/WO1998030120A1/en not_active Application Discontinuation
- 1998-01-13 EP EP98900507A patent/EP0952777A1/en not_active Withdrawn
- 1998-01-13 CA CA002277283A patent/CA2277283A1/en not_active Abandoned
- 1998-07-09 US US09/112,461 patent/US6023859A/en not_active Expired - Fee Related
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WO1998030120A1 (en) | 1998-07-16 |
US6023859A (en) | 2000-02-15 |
EP0952777A1 (en) | 1999-11-03 |
AU5546598A (en) | 1998-08-03 |
US5799417A (en) | 1998-09-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDC | Discontinued application reinstated | ||
FZDE | Discontinued |