US20110113653A1 - Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device - Google Patents
Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device Download PDFInfo
- Publication number
- US20110113653A1 US20110113653A1 US12/878,932 US87893210A US2011113653A1 US 20110113653 A1 US20110113653 A1 US 20110113653A1 US 87893210 A US87893210 A US 87893210A US 2011113653 A1 US2011113653 A1 US 2011113653A1
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- US
- United States
- Prior art keywords
- sole
- footwear
- removable device
- strip
- male
- 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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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C15/00—Non-skid devices or attachments
- A43C15/02—Non-skid devices or attachments attached to the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/22—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer
- A43B13/24—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions
- A43B13/26—Soles made slip-preventing or wear-resisting, e.g. by impregnation or spreading a wear-resisting layer by use of insertions projecting beyond the sole surface
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/24—Collapsible or convertible
- A43B3/246—Collapsible or convertible characterised by the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/18—Attachable overshoes for sporting purposes
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C15/00—Non-skid devices or attachments
- A43C15/04—Non-skid devices or attachments attached to the heel
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C15/00—Non-skid devices or attachments
- A43C15/12—Small releasable non-slip straps
Definitions
- the invention concerns a device to convert an ordinary shoe into a sports shoe when so required, and the shoes fitted with this device.
- the shoe is convertible in order to be suitable for the practice of a sport, such as golf or walking on uneven ground, and also to allow one to walk normally on an ordinary surface such as even ground, a floor or a floor covering, or to move in a gymnasium or a dressing room or a reception area, for example, before or after taking part in the sport.
- a sport such as golf or walking on uneven ground
- an ordinary surface such as even ground, a floor or a floor covering
- a gymnasium or a dressing room or a reception area for example, before or after taking part in the sport.
- U.S. Pat. No. 1,552,512 describes a device composed of a single strip to be applied under the heel, and which has a front wing and a rear wing which fit around and press against the front edge and the rear edge of the heel respectively.
- U.S. Pat. No. 2,118,778 describes a device composed of a narrow, u-shaped strip which is placed under the heel and is fixed to it by screws which pass through the wings of the strip and which penetrate into the underside of the heel.
- U.S. Pat. No. 6,092,306 describes a device composed of two strips which are attached under the sole, at the front and rear ends of the latter respectively, using lateral tabs which wrap against the sides and the front or against the rear of the sole respectively, so as to clip onto a top edge of the sole.
- Publication DE 867 968 describes a device composed of a single U-shaped strip which is applied in the middle zone of the sole between the sole and the heel, and whose wings are equipped with passages for retaining straps.
- U.S. Pat. No. 3,713,233 describes a device composed of a single flexible elastic strip attached by an extension to the underside of the heel of the shoe, with this strip being designed to occupy a working position in which the strip is located under the extension, across the shoe, or a retracted position in which the strip is located behind the shoe with the spikes hidden between the shoe and the strip.
- the extension is attached, by gluing or during manufacture, to the underside of the heel, and the strip is equipped with wings designed to be folded against the sides of the shoe and to be attached to these sides by hollow buttons passing in holes in the wings, and attached to screws passing through perforations in the sides of the shoe.
- cut-outs can create problems of differential wear, can shorten the life of the sole, and can increase the production cost of the shoe.
- the invention provides a footwear comprising a sole and a removable device placed under the sole of the footwear, a peripheral region of the sole and the removable device having male-female engagement portions in opposite regions for retaining the removable device under the sole, and at least one of said male-female arrangements being provided on a flexible portion of the removable device and said removable device being provided in the vicinity of said at least one male-female arrangement with a protruding release tab integral with said removable device and which can be selectively moved to cause the deformation of said flexible portion and the disengagement of said male-female engagement portions.
- the removable device is in the form of a strip.
- the strip may be a front strip positioned under the forefoot and having two longitudinal edges and two lateral edges which are shorter than the two longitudinal edges, and has end portions extend upwardly from the lateral edges, the male-female engagement portions of the removable device being positioned in the upper region of the upwardly extending end portions.
- the two longitudinal edges may not be parallel to each other.
- the release tab may extend laterally from the end portion of the lateral edge opposite the other foot when the footwear is worn.
- the strip may also be a heel strip positioned under the heel and having a back edge and a front edge.
- the heel strip may includes upwardly extending end portions from the back edge and the front edge.
- the male-female engagement portions of the heel strip may be positioned at the top of the upwardly extending and portions of the front edge and/or of the back edge.
- the release tab may extend at the front edge of the removable device toward the front part of the sole.
- the mole-female engagement portions may be tongue-recess engagement elements.
- the tongue-recess engagement elements on the sole may be recesses and tongue-recess engagement elements on the removable device may be claws engaging the recesses of the sole.
- the removable device is advantageously made integrally from a flexible material.
- the removable device may have on its underside ground anchoring arrangements.
- FIG. 1 is a view in perspective of a shoe for the right foot seen from the left side, with two strips according to the invention in place, under the forefoot and under the heel respectively;
- FIG. 2 is a view in perspective similar to that of FIG. 1 after removal of the strips;
- FIG. 3 is a view in perspective of the shoe for the right foot of FIG. 1 fitted with the strips, and seen from the left side;
- FIG. 4 is a view in perspective of the strip located under the forefoot
- FIG. 5 is a vertical cross-section of the shoe, in the region of the strip located under the forefoot and during the fitting of the strip, seen from the front of the shoe;
- FIG. 6 is a section similar to that of FIG. 4 , when fitting has been completed;
- FIG. 7 shows an example of a dowel
- FIG. 8 is a view similar to that of FIG. 5 in the case of a winglet variant
- FIG. 9 shows an example of a fixing pin
- FIG. 10 shows another example of a dowel
- FIG. 11 is a magnified view of a resource for the attachment of a winglet
- FIG. 12 is a top view of the sole of a shoe for the left foot fitted with strips according to the invention.
- FIG. 13 shows a variant of the strips of a device according to the invention.
- FIG. 14 schematically shows one phase of the fitting of the device of FIG. 13 to a flat shoe for the left foot
- FIG. 15 schematically shows a flat shoe for the right foot fitted with a device according to FIG. 13 ;
- FIG. 16 shows two views in perspective of a bootee for the right foot PD fitted with a device according to the invention, with the shoe being viewed from the top and the side;
- FIG. 17 shows the same shoe as in FIG. 16 , but viewed from below and from the right;
- FIG. 18 shows the same shoe as in FIGS. 16 and 17 , in the process of being fitted out, and
- FIG. 19 is a view in perspective of the two strips of the shoes of FIGS. 17 and 18 .
- FIG. 20 is a view in perspective of another embodiment of a shoe for the right foot seen from the bottom left side, with a front strip and a heel strip according to the invention in place, under the forefoot and under the heel respectively;
- FIG. 21 is an exploded view or the bottom part of the shoe of FIG. 20 ;
- FIG. 22 is a close-up view of the front strip
- FIG. 23 is a close-up view of the heel strip.
- FIG. 24 is a view in perspective of the shoe of FIG. 20 , seen from the bottom front side of the shoe.
- the ordinary shoe for the right foot PD shown in FIGS. 1 to 3 is equipped with two spike-bearing strips 2 , 3 under the forefoot 4 and under the heel 5 respectively, surface-mounted on the underside of the sole S in FIG. 12 , at some distance from the ends of the sole.
- the strip 2 located under the forefoot ( FIG. 4 ) has two longitudinal rectilinear edges 2 a , 2 b that form an acute angle with each other.
- these two edges form an angle of 20° to 40°.
- the strip has two lateral edges 2 c , 2 d which are fitted with winglets 8 , 9 respectively, and which are adjacent to these edges and fold up onto the sides 6 , 7 of the sole.
- the two lateral edges 8 , 9 are of unequal width and are not parallel.
- the strip has the shape of an irregular quadrilateral whose opposite sides are neither in parallel nor have the same length ( FIG. 12 ). This shape contributes to the retention in position of the strip in spite of the any frontal impacts suffered.
- the small winglet 8 located against the left side of the shoe for the right foot 6 , is equipped with a hole 10 to allow a pin 11 carried by an extension 12 , fixed to the winglet by a hinge 13 , to pass through this hole when the extension is folded back onto the winglet ( FIGS. 4 to 6 ).
- This pin 11 is intended to enter into a dowel 14 that is driven obliquely into the left side 6 of the sole.
- the pin can be solid or hollow.
- the small winglet 8 carries the pin directly 11 , which is then equipped with a head 11 b that allows its extraction by hand or with a tool.
- the large winglet 9 carries two fixed studs 15 , 16 that are intended to enter into corresponding hollow dowels 17 , 18 driven into holes in the right side 7 of the sole ( FIG. 11 ).
- the small winglet 8 is perpendicular to the strip while the large winglet 9 is perpendicular or slanting outwards in relation to the strip ( FIGS. 3 and 4 ).
- the same comments apply to the strip 3 located under the heel.
- the sides of the sole against which the winglets of the strip are pressed have flats or recesses which ensure a good contact of the winglets with these sides.
- dashed lines shown as M
- the strips are designed so that the small winglets are facing inwards, that is toward the space between the shoes, so that the user is easily able to start the removal of a strip by resting the corresponding foot on the other knee and then grasping the small winglet in order to extract, from the sole, the fixing pin that carries this extension or, if the winglet has a removable pin, by pulling on the head of this pin to extract the latter from the sole and so detach the winglet from the sole, after which he can lift the strip and extract, from the sole, the studs which were holding the large winglet.
- These operations can be facilitated if the strip and its winglets have a certain ability to deform.
- FIG. 11 is a magnified view of a sole at the location of a ventilation hole 20 of the shoe, which passes obliquely through the sole S and which is fitted with a hollow dowel 17 designed to receive a hollow pin 15 for attaching the winglet 9 of the strip. This is seen only by its head 15 a , visible outside the winglet.
- the strip and the winglets are preferably made of a thin metal with a thickness of no more than a few millimeters. It is equipped with spikes, striations, etc, depending on the sport to be played. The user can thus have a net of strips allowing the playing of different sports or suitable for a variety of surfaces.
- the longitudinal edges of the strips are rectilinear. In a variant, these edges can be curvilinear. In fact, the edges are all shaped to facilitate the retention of the strip and its resistance to frontal impacts.
- the mean axes of the curves form an acute angle with each other, preferably in the range 20° to 40°.
- FIGS. 13 to 19 relate to implementation variants.
- FIG. 13 shows variants of strips, marked 20 and 30 , with their winglets 80 and 90 . These strips have curvilinear longitudinal edges.
- the large winglet 90 carries two studs 140 designed to be inserted into suitable cut-outs formed on the side of the sole facing outwards (and therefore seen when walking), while the small winglet 80 carries a top claw 141 designed to grip the top of the sole.
- the strip for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and a certain flexibility, is created by moulding together with its studs and its claw.
- the studs are advantageously fitted with a gripping tab (not shown) which enters with them into the holes in the sole but which can be grasped to extract the stud from the hole in the sole, in a similar manner to the connection blocks used in computer connections.
- a gripping tab (not shown) which enters with them into the holes in the sole but which can be grasped to extract the stud from the hole in the sole, in a similar manner to the connection blocks used in computer connections.
- recesses are formed on the sides of the shoe in order to accommodate the claws 142 .
- the user proceeds as indicated above for the previous implementation, except that after inserting the studs of a strip into the holes provided for this purpose in the sole on one side of the shoe, he pulls on the strip, taking advantage of the flexibility of the strip or of the sole, so as to hook the claw onto the sole on the other side of the shoe ( FIGS. 14 and 15 ).
- FIG. 15 shows two views of a flat shoe for the right foot PD fitted with a device according to the invention. It can be seen that the studs are located on the winglets on the right side of the shoe facing outwards, while the claws are visible on the left side.
- the longitudinal edges 20 a , 20 b of the strip 20 located under the forefoot are not parallel to each other and form an acute angle with each other. These edges are also oblique in relation to the transverse axis A of the sole ( FIG. 15 ). As a result, these edges have a curvilinear shape which reduces the incidence on the strip of frontal impacts which would tend to shift it.
- FIGS. 20 to 24 Another embodiment of the shoe is described with reference to FIGS. 20 to 24 .
- the ordinary shoe for the right foot PD shown in FIGS. 20 to 24 is equipped with two removable strips 2 , 3 under the forefoot 4 and under the heel 5 respectively, surface-mounted on the underside of the sole S.
- word “shoe” relates to any kind of footwear.
- a front strip 2 is located under the forefoot 4 at some distance from the front end of the sole S.
- a heel strip 3 is located under the heel end 5 of the sole S.
- the front strip 2 is located under the forefoot 4 where the head of the metatarsal leans on.
- the front strip 2 located under the forefoot can have two longitudinal rectilinear edges 2 a , 2 b that form an acute angle with each other. Preferably these two edges form an angle of 20° to 40°.
- the front strip 2 has two lateral edges 2 c , 2 d which are fitted with upwardly extending and portions, like winglets 8 , 9 respectively, and which are adjacent to these edges and extends uprightly up to the sides of the sole S.
- the two lateral edges 2 c , 2 d are of unequal width and are not parallel.
- the front strip 2 has the shape of an irregular quadrilateral whose opposite sides are neither in parallel nor have the same length. This shape contributes to the retention in position of the strip in spite of frontal impacts suffered.
- the front strip 2 located under the forefoot 4 can also be of substantially the same shape as described above but with curvilinear longitudinal edges 2 a , 2 b . In fact, the edges are all shaped to facilitate the retention of the strip and its resistance to frontal impacts.
- Each winglet 2 c , 2 d of the front strip 2 carries a male-female engagement portion, like atop claw 81 , 91 , designed to grip the top of the sole S.
- male-female engagement portions like recesses 46 , 47 , are formed on the sides of the sole S in order to accommodate the claws 81 , 91 .
- a release tab 82 is provided to the winglet 8 on the inner side of the foot on which the shoe is to be put on.
- the inner side of the foot is the side facing the other foot, i.e. for a right foot, the inner side is its lateral left side and for a left foot, the inner side is its lateral right side.
- the release tab 82 extends opposite the corresponding claw 81 .
- the release tab 82 is shaped so that it can be stepped on with the shoe fitted on the other foot and is physically linked to the claw 81 on the same winglet 8 .
- the front strip 2 for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and certain flexibility, is manufactured by being integrally molded with its winglets 8 , 9 , claws 81 , 91 and release tab 82 .
- the mean axes of the curves form an acute angle with each other, preferably in the range 20° to 40°.
- the heel strip 3 is shaped to fitly cover the heel part 5 of the sole S, and comprises a plate 31 with the shape of the heel part 5 of the sole S, namely back edge 32 and a front edge 33 ( FIG. 23 ). Both edges 32 , 33 may have same concavity or different concavity.
- a back post 320 extends in substantially upright manner and ends with a male-female engagement portion, like a back claw 321 , for fixing the heel strip 3 to the sole S or the shoe.
- the back claw 321 extends inwardly from the back post 320 .
- a corresponding male-female engagement portion, like a recess 58 , in the sole S or the shoe is then provided to receive the back claw 321 .
- an upwardly extending end portion like a front winglet 330 , extends substantially in upright manner and ends with a male-female engagement portion, like a front claw 331 facing inwards, and with a release tab 332 facing outwards.
- the release tab 332 and the front claw 331 are thus physically connected.
- the front claw 331 is shaped to cooperate with a corresponding male-female engagement portion, like a recess 59 , on the sole S for fixing the heel-strip 3 under the sole S.
- the heel strip 3 for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and certain flexibility, is manufactured by being integrally molded with its winglet 320 and post 310 , claws 311 , 321 and release tab 332 .
- the back post 320 is preferably stronger than the front winglet 330 and thus less flexible.
- the recesses 46 , 47 , 58 , 59 on the side of the sole S ensure a good contact of the winglets and post with these sides.
- the user For fixing the front strip 2 onto the shoe PD, the user just needs to adjust one claw 81 or 91 to the corresponding recess 46 or 47 in the sole S and apply an adequate pressure on the other claw 91 or 81 so that it deforms due to the material flexibility and lodges into the corresponding other recess 47 or 46 in the sole S. Eventually, pulling the front strip 2 is necessary prior to applying pressure.
- the user has to adjust the back claw 321 to the corresponding recess 58 in the sole S or shoe and apply a pressure onto the front claw 331 so that it deforms due to the material flexibility and lodges into the corresponding recess 59 in the sole S. Eventually, pulling the heel strip 3 is necessary prior to applying pressure.
- the user can use his other foot by stepping onto the release tab 82 causing its downward bending, which releases the claw 81 on the same side from the corresponding recess 46 of the sole S. Thus, he does not need to bend his back or lower himself down.
- the user can also bend down or lower down and use his hand or any tool to apply pressure on the release tab 82 for causing its downward bending. Then, he pushes sideward to release the other claw 91 .
- the user For removing the heel strip 3 , the user lifts his foot off the ground and grasps the release tab 332 , bends it downwards, thereby releasing the front claw 331 of the heel strip 3 from the corresponding recess 59 in the sole S, then pushes the heel strip 3 backwards to release the back claw 321 from the corresponding recess 59 of the sole S.
- the user can also just lower himself down, lifts the heel part of the shoe while leaning on the front part of the shoe, grasps the release tab 332 and removes it as mentioned above.
- the strips can be covered on their undersides by a suitable material such as gum or leather.
- At least one strip can have ground anchoring arrangements, such as studs or spikes, on its underside to turn the shoe into a sports shoe.
- ground anchoring arrangements such as studs or spikes, on its underside to turn the shoe into a sports shoe.
- studs or spikes can be conical such as those used for football (soccer) shoes. They can also be crenel-shaped and placed on the edges of circles such as those used for golf shoes.
- the underside of the strip can also have any suitable design for any use (leisure, sporty, city . . . ).
- the strips 2 , 3 can lengthen the life span of the sole S. Indeed, the strips are preferably placed under the sole where friction between the shoe and the ground is most considerable (head of the metatarsal and heel). Thus, almost only the strips are worn-out during use of the shoe and they can be replaced easily.
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Abstract
Footwear having a sole and a removable device placed under the sole of the footwear. A peripheral region of the sole and the removable device have male-female engagement portions in opposite regions for retaining the removable device under the sole. At least one of the male-female arrangements is provided on a flexible portion of the removable device. The removable device is provided in the vicinity of at least one of the male-female arrangements. A protruding release tab integral with the removable device can be selectively moved to cause the deformation of the flexible portion and the disengagement of the male-female engagement portions.
Description
- The invention concerns a device to convert an ordinary shoe into a sports shoe when so required, and the shoes fitted with this device.
- In a particular application envisaged, the shoe is convertible in order to be suitable for the practice of a sport, such as golf or walking on uneven ground, and also to allow one to walk normally on an ordinary surface such as even ground, a floor or a floor covering, or to move in a gymnasium or a dressing room or a reception area, for example, before or after taking part in the sport.
- Numerous devices have been proposed, composed of one or two strips equipped with spikes and designed to be attached under the sole and held in position by various means.
- U.S. Pat. No. 1,552,512 describes a device composed of a single strip to be applied under the heel, and which has a front wing and a rear wing which fit around and press against the front edge and the rear edge of the heel respectively.
- U.S. Pat. No. 2,118,778 describes a device composed of a narrow, u-shaped strip which is placed under the heel and is fixed to it by screws which pass through the wings of the strip and which penetrate into the underside of the heel.
- U.S. Pat. No. 6,092,306 describes a device composed of two strips which are attached under the sole, at the front and rear ends of the latter respectively, using lateral tabs which wrap against the sides and the front or against the rear of the sole respectively, so as to clip onto a top edge of the sole.
- Publication DE 867 968 describes a device composed of a single U-shaped strip which is applied in the middle zone of the sole between the sole and the heel, and whose wings are equipped with passages for retaining straps.
- U.S. Pat. No. 3,713,233 describes a device composed of a single flexible elastic strip attached by an extension to the underside of the heel of the shoe, with this strip being designed to occupy a working position in which the strip is located under the extension, across the shoe, or a retracted position in which the strip is located behind the shoe with the spikes hidden between the shoe and the strip. In this solution, the extension is attached, by gluing or during manufacture, to the underside of the heel, and the strip is equipped with wings designed to be folded against the sides of the shoe and to be attached to these sides by hollow buttons passing in holes in the wings, and attached to screws passing through perforations in the sides of the shoe.
- More recently (
publication FR 2 831 030), a device has been proposed that is composed of two strips designed to be placed respectively under the forefoot and under the heel, each strip being at some distance from the corresponding end of the sole, thus presenting two longitudinal edges which are positioned across the sole and two lateral edges from which emerge two lateral winglets which fold up against the vertical sides of the sole, where these winglets and the vertical sides of the sole include resources that fit together for the detachable fixing of the strip to the shoe. In the invention described in this publication, the strips are inserted into cut-outs formed in the bottom surface of the sole in order to prevent movement of the strips while walking. - These cut-outs can create problems of differential wear, can shorten the life of the sole, and can increase the production cost of the shoe.
- One object of the invention is to overcome drawbacks of the prior art. To this aim, the invention provides a footwear comprising a sole and a removable device placed under the sole of the footwear, a peripheral region of the sole and the removable device having male-female engagement portions in opposite regions for retaining the removable device under the sole, and at least one of said male-female arrangements being provided on a flexible portion of the removable device and said removable device being provided in the vicinity of said at least one male-female arrangement with a protruding release tab integral with said removable device and which can be selectively moved to cause the deformation of said flexible portion and the disengagement of said male-female engagement portions.
- In one particular embodiment, the removable device is in the form of a strip.
- The strip may be a front strip positioned under the forefoot and having two longitudinal edges and two lateral edges which are shorter than the two longitudinal edges, and has end portions extend upwardly from the lateral edges, the male-female engagement portions of the removable device being positioned in the upper region of the upwardly extending end portions. The two longitudinal edges may not be parallel to each other. The release tab may extend laterally from the end portion of the lateral edge opposite the other foot when the footwear is worn.
- The strip may also be a heel strip positioned under the heel and having a back edge and a front edge. The heel strip may includes upwardly extending end portions from the back edge and the front edge. The male-female engagement portions of the heel strip may be positioned at the top of the upwardly extending and portions of the front edge and/or of the back edge. The release tab may extend at the front edge of the removable device toward the front part of the sole.
- The mole-female engagement portions may be tongue-recess engagement elements. The tongue-recess engagement elements on the sole may be recesses and tongue-recess engagement elements on the removable device may be claws engaging the recesses of the sole.
- The removable device is advantageously made integrally from a flexible material.
- The removable device may have on its underside ground anchoring arrangements.
- The following are some non-limiting examples of shoes in accordance with the invention, with reference to the figures in the attached drawings, in which:
-
FIG. 1 is a view in perspective of a shoe for the right foot seen from the left side, with two strips according to the invention in place, under the forefoot and under the heel respectively; -
FIG. 2 is a view in perspective similar to that ofFIG. 1 after removal of the strips; -
FIG. 3 is a view in perspective of the shoe for the right foot ofFIG. 1 fitted with the strips, and seen from the left side; -
FIG. 4 is a view in perspective of the strip located under the forefoot; -
FIG. 5 is a vertical cross-section of the shoe, in the region of the strip located under the forefoot and during the fitting of the strip, seen from the front of the shoe; -
FIG. 6 is a section similar to that ofFIG. 4 , when fitting has been completed; -
FIG. 7 shows an example of a dowel; -
FIG. 8 is a view similar to that ofFIG. 5 in the case of a winglet variant; -
FIG. 9 shows an example of a fixing pin; -
FIG. 10 shows another example of a dowel; -
FIG. 11 is a magnified view of a resource for the attachment of a winglet; -
FIG. 12 is a top view of the sole of a shoe for the left foot fitted with strips according to the invention; -
FIG. 13 shows a variant of the strips of a device according to the invention; -
FIG. 14 schematically shows one phase of the fitting of the device ofFIG. 13 to a flat shoe for the left foot; -
FIG. 15 schematically shows a flat shoe for the right foot fitted with a device according toFIG. 13 ; -
FIG. 16 shows two views in perspective of a bootee for the right foot PD fitted with a device according to the invention, with the shoe being viewed from the top and the side; -
FIG. 17 shows the same shoe as inFIG. 16 , but viewed from below and from the right; -
FIG. 18 shows the same shoe as inFIGS. 16 and 17 , in the process of being fitted out, and -
FIG. 19 is a view in perspective of the two strips of the shoes ofFIGS. 17 and 18 , -
FIG. 20 is a view in perspective of another embodiment of a shoe for the right foot seen from the bottom left side, with a front strip and a heel strip according to the invention in place, under the forefoot and under the heel respectively; -
FIG. 21 is an exploded view or the bottom part of the shoe ofFIG. 20 ; -
FIG. 22 is a close-up view of the front strip; -
FIG. 23 is a close-up view of the heel strip; and -
FIG. 24 is a view in perspective of the shoe ofFIG. 20 , seen from the bottom front side of the shoe. - The ordinary shoe for the right foot PD shown in
FIGS. 1 to 3 is equipped with two spike-bearingstrips forefoot 4 and under theheel 5 respectively, surface-mounted on the underside of the sole S inFIG. 12 , at some distance from the ends of the sole. - The
strip 2 located under the forefoot (FIG. 4 ) has two longitudinalrectilinear edges - Preferably these two edges form an angle of 20° to 40°.
- The strip has two
lateral edges winglets sides - The two
lateral edges FIG. 12 ). This shape contributes to the retention in position of the strip in spite of the any frontal impacts suffered. - The
small winglet 8, located against the left side of the shoe for theright foot 6, is equipped with ahole 10 to allow apin 11 carried by anextension 12, fixed to the winglet by ahinge 13, to pass through this hole when the extension is folded back onto the winglet (FIGS. 4 to 6 ). Thispin 11 is intended to enter into adowel 14 that is driven obliquely into theleft side 6 of the sole. The pin can be solid or hollow. - In a variant (
FIG. 8 ), thesmall winglet 8 carries the pin directly 11, which is then equipped with ahead 11 b that allows its extraction by hand or with a tool. - The
large winglet 9 carries two fixedstuds hollow dowels 17, 18 driven into holes in theright side 7 of the sole (FIG. 11 ). - Preferably, the
small winglet 8 is perpendicular to the strip while thelarge winglet 9 is perpendicular or slanting outwards in relation to the strip (FIGS. 3 and 4 ). The same comments apply to thestrip 3 located under the heel. - Preferably, the sides of the sole against which the winglets of the strip are pressed have flats or recesses which ensure a good contact of the winglets with these sides. In
FIG. 12 , dashed lines (shown as M) show the position of the flats 6 a, 7 a for thewinglets strip 2 applied under the forefoot of the shoe for the left foot. - The strips are designed so that the small winglets are facing inwards, that is toward the space between the shoes, so that the user is easily able to start the removal of a strip by resting the corresponding foot on the other knee and then grasping the small winglet in order to extract, from the sole, the fixing pin that carries this extension or, if the winglet has a removable pin, by pulling on the head of this pin to extract the latter from the sole and so detach the winglet from the sole, after which he can lift the strip and extract, from the sole, the studs which were holding the large winglet. These operations can be facilitated if the strip and its winglets have a certain ability to deform.
-
FIG. 11 is a magnified view of a sole at the location of aventilation hole 20 of the shoe, which passes obliquely through the sole S and which is fitted with ahollow dowel 17 designed to receive ahollow pin 15 for attaching thewinglet 9 of the strip. This is seen only by itshead 15 a, visible outside the winglet. The strip and the winglets are preferably made of a thin metal with a thickness of no more than a few millimeters. It is equipped with spikes, striations, etc, depending on the sport to be played. The user can thus have a net of strips allowing the playing of different sports or suitable for a variety of surfaces. - In the previous implementations, the longitudinal edges of the strips are rectilinear. In a variant, these edges can be curvilinear. In fact, the edges are all shaped to facilitate the retention of the strip and its resistance to frontal impacts.
- When the edges are curvilinear, the mean axes of the curves form an acute angle with each other, preferably in the
range 20° to 40°. -
FIGS. 13 to 19 relate to implementation variants. -
FIG. 13 shows variants of strips, marked 20 and 30, with theirwinglets - In addition, in these variants, the
large winglet 90 carries twostuds 140 designed to be inserted into suitable cut-outs formed on the side of the sole facing outwards (and therefore seen when walking), while thesmall winglet 80 carries atop claw 141 designed to grip the top of the sole. - Preferably, the strip, for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and a certain flexibility, is created by moulding together with its studs and its claw.
- The studs are advantageously fitted with a gripping tab (not shown) which enters with them into the holes in the sole but which can be grasped to extract the stud from the hole in the sole, in a similar manner to the connection blocks used in computer connections. Preferably, recesses are formed on the sides of the shoe in order to accommodate the
claws 142. - To fit the strips, the user proceeds as indicated above for the previous implementation, except that after inserting the studs of a strip into the holes provided for this purpose in the sole on one side of the shoe, he pulls on the strip, taking advantage of the flexibility of the strip or of the sole, so as to hook the claw onto the sole on the other side of the shoe (
FIGS. 14 and 15 ). - He then proceeds in a similar manner for the other shoe.
-
FIG. 15 shows two views of a flat shoe for the right foot PD fitted with a device according to the invention. It can be seen that the studs are located on the winglets on the right side of the shoe facing outwards, while the claws are visible on the left side. - It can be seen in these figures that the
longitudinal edges strip 20 located under the forefoot are not parallel to each other and form an acute angle with each other. These edges are also oblique in relation to the transverse axis A of the sole (FIG. 15 ). As a result, these edges have a curvilinear shape which reduces the incidence on the strip of frontal impacts which would tend to shift it. - The same applies to the shoe for the left foot.
- The same considerations apply to the case of the bootees (
FIGS. 16 to 19 ). - The invention is not limited to these implementation examples.
- Hereafter, another embodiment of the shoe is described with reference to
FIGS. 20 to 24 . - The ordinary shoe for the right foot PD shown in
FIGS. 20 to 24 is equipped with tworemovable strips forefoot 4 and under theheel 5 respectively, surface-mounted on the underside of the sole S. In this description, word “shoe” relates to any kind of footwear. - A
front strip 2 is located under theforefoot 4 at some distance from the front end of the sole S. Aheel strip 3 is located under theheel end 5 of the sole S. - Preferably, the
front strip 2 is located under theforefoot 4 where the head of the metatarsal leans on. - The
front strip 2 located under the forefoot (FIG. 22 ) can have two longitudinalrectilinear edges - The
front strip 2 has twolateral edges winglets lateral edges front strip 2 has the shape of an irregular quadrilateral whose opposite sides are neither in parallel nor have the same length. This shape contributes to the retention in position of the strip in spite of frontal impacts suffered. - The
front strip 2 located under theforefoot 4 can also be of substantially the same shape as described above but with curvilinearlongitudinal edges - Each
winglet front strip 2 carries a male-female engagement portion, like atopclaw - Preferably, male-female engagement portions, like
recesses 46, 47, are formed on the sides of the sole S in order to accommodate theclaws - A
release tab 82 is provided to thewinglet 8 on the inner side of the foot on which the shoe is to be put on. The inner side of the foot is the side facing the other foot, i.e. for a right foot, the inner side is its lateral left side and for a left foot, the inner side is its lateral right side. In other words, therelease tab 82 extends opposite the correspondingclaw 81. - The
release tab 82 is shaped so that it can be stepped on with the shoe fitted on the other foot and is physically linked to theclaw 81 on thesame winglet 8. - Bending downward the
release tab 82 releases the corresponding claw 61 (on the same side) from therecess 46 on the side of the sole S. - Preferably, the
front strip 2, for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and certain flexibility, is manufactured by being integrally molded with itswinglets claws release tab 82. - When the
edges range 20° to 40°. - The
heel strip 3 is shaped to fitly cover theheel part 5 of the sole S, and comprises aplate 31 with the shape of theheel part 5 of the sole S, namely backedge 32 and a front edge 33 (FIG. 23 ). Both edges 32, 33 may have same concavity or different concavity. - From the
back edge 32, aback post 320 extends in substantially upright manner and ends with a male-female engagement portion, like aback claw 321, for fixing theheel strip 3 to the sole S or the shoe. Theback claw 321 extends inwardly from theback post 320. A corresponding male-female engagement portion, like a recess 58, in the sole S or the shoe is then provided to receive theback claw 321. - From the
front edge 33 of theheel strip 3 an upwardly extending end portion, like afront winglet 330, extends substantially in upright manner and ends with a male-female engagement portion, like afront claw 331 facing inwards, and with arelease tab 332 facing outwards. Therelease tab 332 and thefront claw 331 are thus physically connected. Thefront claw 331 is shaped to cooperate with a corresponding male-female engagement portion, like arecess 59, on the sole S for fixing the heel-strip 3 under the sole S. Once theheel strip 3 fixed under the sole S, it can be removed by bending downward therelease tab 332. Bending therelease tab 332 releases thefront claw 331 from the corresponding recess of the sole. - Preferably, the
heel strip 3, for example in nylon or other synthetic material having the desired qualities of resistance to abrasion and certain flexibility, is manufactured by being integrally molded with itswinglet 320 and post 310,claws 311, 321 andrelease tab 332. Theback post 320 is preferably stronger than thefront winglet 330 and thus less flexible. - The
recesses - For fixing the
front strip 2 onto the shoe PD, the user just needs to adjust oneclaw corresponding recess 46 or 47 in the sole S and apply an adequate pressure on theother claw other recess 47 or 46 in the sole S. Eventually, pulling thefront strip 2 is necessary prior to applying pressure. - For fixing the
heel strip 3 onto the sole S, the user has to adjust theback claw 321 to the corresponding recess 58 in the sole S or shoe and apply a pressure onto thefront claw 331 so that it deforms due to the material flexibility and lodges into the correspondingrecess 59 in the sole S. Eventually, pulling theheel strip 3 is necessary prior to applying pressure. - For removing the
front strip 2 out from the sole S, the user can use his other foot by stepping onto therelease tab 82 causing its downward bending, which releases theclaw 81 on the same side from the correspondingrecess 46 of the sole S. Thus, he does not need to bend his back or lower himself down. The user can also bend down or lower down and use his hand or any tool to apply pressure on therelease tab 82 for causing its downward bending. Then, he pushes sideward to release theother claw 91. - For removing the
heel strip 3, the user lifts his foot off the ground and grasps therelease tab 332, bends it downwards, thereby releasing thefront claw 331 of theheel strip 3 from the correspondingrecess 59 in the sole S, then pushes theheel strip 3 backwards to release theback claw 321 from the correspondingrecess 59 of the sole S. The user can also just lower himself down, lifts the heel part of the shoe while leaning on the front part of the shoe, grasps therelease tab 332 and removes it as mentioned above. - He then proceeds in a similar manner for the other shoe.
- The same applies to the shoe for the left foot.
- The strips can be covered on their undersides by a suitable material such as gum or leather.
- At least one strip can have ground anchoring arrangements, such as studs or spikes, on its underside to turn the shoe into a sports shoe. These studs or spikes can be conical such as those used for football (soccer) shoes. They can also be crenel-shaped and placed on the edges of circles such as those used for golf shoes.
- The underside of the strip can also have any suitable design for any use (leisure, sporty, city . . . ).
- With the possibility for replacement, the
strips - Covering the whole heel gives the advantage to provide efficient wearing heel strips. Indeed, one individual does not wear out his shoes the same way another one will. Some will wear out the inner side of the heel, others the outer side of the heel. It also provides a larger space for endowing the heel strip with any kind of underside element so that it best suits the activity for which the shoe is aimed at.
- The invention is not limited to these implementation examples.
Claims (13)
1. A footwear comprising a sole and a removable device placed under the sole of the footwear, a peripheral region of the sole and the removable device having male-female engagement portions in opposite regions for retaining the removable device under the sole, and at least one of said male-female arrangements being provided on a flexible portion of the removable device and said removable device being provided in the vicinity of said at least one male-female arrangement with a protruding release tab integral with said removable device and which can be selectively moved to cause the deformation of said flexible portion and the disengagement of said male-female engagement portions.
2. The footwear of claim 1 , wherein the removable device is in the form of a strip.
3. The footwear of claim 2 , wherein the strip is a front strip positioned under the forefoot and having two longitudinal edges and two lateral edges which are shorter than the two longitudinal edges, and has end portions extend upwardly from the lateral edges, the male-female engagement portions of the removable device being positioned in the upper region of the upwardly extending end portions.
4. The footwear of claim 3 , wherein the two longitudinal edges are not parallel to each other.
5. The footwear of claim 3 , wherein the release tab extends laterally from the end portion of the lateral edge opposite the other foot when the footwear is worn.
6. The footwear of claim 2 , wherein the strip is a heel strip positioned under the heel and having a back edge and a front edge.
7. The footwear of claim 6 , including upwardly extending end portions from the back edge and the front edge.
8. The footwear of claim 7 , wherein the male-female engagement portions of the removable device are positioned in an upper region of the upwardly extending end portions.
9. The footwear of claim 6 , wherein the release tab extends at the front edge of the removable device toward the front part of the sole.
10. The footwear of claim 1 , wherein the male-female engagement portions are tongue-recess engagement elements.
11. The footwear of claim 10 , wherein the tongue-recess engagement elements on the sole are recesses and tongue-recess engagement elements on the removable device are tongue-shaped claws engaging said recesses.
12. The footwear of claim 1 , wherein the removable device is made integrally from a flexible material.
13. The footwear of claim 1 , wherein the removable device has on its underside ground anchoring arrangements.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/878,932 US20110113653A1 (en) | 2004-05-07 | 2010-09-09 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
PCT/EP2011/065676 WO2012032170A1 (en) | 2010-09-09 | 2011-09-09 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0404935A FR2869766B1 (en) | 2004-05-07 | 2004-05-07 | TRANSFORMABLE CITY FOOTWEAR ON DEMAND IN SPORT SHOE AND DEVICE |
FR0404935 | 2004-05-07 | ||
FR0504523A FR2869769B1 (en) | 2004-05-07 | 2005-05-03 | DEVICE FOR TRANSFORMING ON DEMAND A CITY FOOTWEAR IN SPORT SHOES AND SHOES SUITABLE FOR THIS DEVICE |
FR0504523 | 2005-05-03 | ||
PCT/FR2005/001133 WO2005120276A1 (en) | 2004-05-07 | 2005-05-04 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
US57982506A | 2006-11-06 | 2006-11-06 | |
US12/878,932 US20110113653A1 (en) | 2004-05-07 | 2010-09-09 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/001133 Continuation-In-Part WO2005120276A1 (en) | 2004-05-07 | 2005-05-04 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
US57982506A Continuation-In-Part | 2004-05-07 | 2006-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110113653A1 true US20110113653A1 (en) | 2011-05-19 |
Family
ID=44785824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/878,932 Abandoned US20110113653A1 (en) | 2004-05-07 | 2010-09-09 | Device for transforming on demand a city shoe into a sports shoe and shoes adapted to said device |
Country Status (2)
Country | Link |
---|---|
US (1) | US20110113653A1 (en) |
WO (1) | WO2012032170A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130263477A1 (en) * | 2012-04-06 | 2013-10-10 | Salomon S.A.S. | Footwear element |
US20140230283A1 (en) * | 2013-02-19 | 2014-08-21 | Paddy Pablo Cordova | Athletes footwear |
US20150282554A1 (en) * | 2014-04-04 | 2015-10-08 | Ryan Irion | Barefoot running spikes and accessories |
US20160366985A1 (en) * | 2015-06-22 | 2016-12-22 | Salomon S.A.S. | Footwear element to be mounted on an apparatus, and equipment including such footwear element and apparatus |
US20170027282A1 (en) * | 2015-07-30 | 2017-02-02 | Columbia Insurance Company | Sole of a Shoe |
US20190075883A1 (en) * | 2017-09-13 | 2019-03-14 | Hong-soon Park | Functional shoes and functional unit for shoes |
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US1552512A (en) * | 1925-01-05 | 1925-09-08 | David O Shibler | Ice creeper |
US2118778A (en) * | 1937-07-31 | 1938-05-24 | Elma P Ferguson | Antiskid device for shoes |
US2888754A (en) * | 1958-03-03 | 1959-06-02 | Frank C Miller | Detachable antislip device |
US3763578A (en) * | 1972-03-20 | 1973-10-09 | J Chadwell | Flexible cleaner for the sole of a golf shoe |
US4351120A (en) * | 1979-06-15 | 1982-09-28 | Engineered Sports Products, Inc. | Removable traction surfaces for footwear |
US6092306A (en) * | 1999-03-18 | 2000-07-25 | Newton-Dunn; Tracey | Tap shoe taps cover system |
US6598317B1 (en) * | 2000-11-13 | 2003-07-29 | Jan F. Le Vine | Shoe tap protectors |
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DE867968C (en) | 1951-04-17 | 1953-02-23 | Jakob Froehlich | Anti-skid |
US3713233A (en) | 1971-04-29 | 1973-01-30 | C Hunnicutt | Safety footwear |
DE29508573U1 (en) * | 1995-05-23 | 1995-08-03 | Pomplun Dieter | Anti-slip device for ski boots |
FR2831030A1 (en) | 2001-10-23 | 2003-04-25 | Theodore Grimmeisen | Shoe has recesses in its sole, into which inserts can be fitted which have studs on their lower surface, improving support when playing golf or walking on uneven surfaces |
FR2869769B1 (en) * | 2004-05-07 | 2006-10-13 | Theodore Grimmeisen | DEVICE FOR TRANSFORMING ON DEMAND A CITY FOOTWEAR IN SPORT SHOES AND SHOES SUITABLE FOR THIS DEVICE |
CA2573740C (en) * | 2006-01-13 | 2011-03-22 | Maxime Laporte | Attachments for an item of footwear |
-
2010
- 2010-09-09 US US12/878,932 patent/US20110113653A1/en not_active Abandoned
-
2011
- 2011-09-09 WO PCT/EP2011/065676 patent/WO2012032170A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US1552512A (en) * | 1925-01-05 | 1925-09-08 | David O Shibler | Ice creeper |
US2118778A (en) * | 1937-07-31 | 1938-05-24 | Elma P Ferguson | Antiskid device for shoes |
US2888754A (en) * | 1958-03-03 | 1959-06-02 | Frank C Miller | Detachable antislip device |
US3763578A (en) * | 1972-03-20 | 1973-10-09 | J Chadwell | Flexible cleaner for the sole of a golf shoe |
US4351120A (en) * | 1979-06-15 | 1982-09-28 | Engineered Sports Products, Inc. | Removable traction surfaces for footwear |
US6092306A (en) * | 1999-03-18 | 2000-07-25 | Newton-Dunn; Tracey | Tap shoe taps cover system |
US6598317B1 (en) * | 2000-11-13 | 2003-07-29 | Jan F. Le Vine | Shoe tap protectors |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130263477A1 (en) * | 2012-04-06 | 2013-10-10 | Salomon S.A.S. | Footwear element |
US9936768B2 (en) * | 2012-04-06 | 2018-04-10 | Salomon S.A.S. | Footwear element |
US20140230283A1 (en) * | 2013-02-19 | 2014-08-21 | Paddy Pablo Cordova | Athletes footwear |
US20150282554A1 (en) * | 2014-04-04 | 2015-10-08 | Ryan Irion | Barefoot running spikes and accessories |
US20160366985A1 (en) * | 2015-06-22 | 2016-12-22 | Salomon S.A.S. | Footwear element to be mounted on an apparatus, and equipment including such footwear element and apparatus |
US20170027282A1 (en) * | 2015-07-30 | 2017-02-02 | Columbia Insurance Company | Sole of a Shoe |
US10226102B2 (en) * | 2015-07-30 | 2019-03-12 | Columbia Insurance Company | Sole of a shoe |
US20190075883A1 (en) * | 2017-09-13 | 2019-03-14 | Hong-soon Park | Functional shoes and functional unit for shoes |
US10687580B2 (en) * | 2017-09-13 | 2020-06-23 | Hong-soon Park | Functional shoes and functional unit for shoes |
Also Published As
Publication number | Publication date |
---|---|
WO2012032170A1 (en) | 2012-03-15 |
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Legal Events
Date | Code | Title | Description |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |