CA2129018C - Step shock absorbing, fashionably raised heel for ladies' and gentlemen's footwear of the high-heeled shape or having a conical wedge shape - Google Patents
Step shock absorbing, fashionably raised heel for ladies' and gentlemen's footwear of the high-heeled shape or having a conical wedge shapeInfo
- Publication number
- CA2129018C CA2129018C CA002129018A CA2129018A CA2129018C CA 2129018 C CA2129018 C CA 2129018C CA 002129018 A CA002129018 A CA 002129018A CA 2129018 A CA2129018 A CA 2129018A CA 2129018 C CA2129018 C CA 2129018C
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- Prior art keywords
- heel
- core
- shoe
- outer envelope
- accordance
- Prior art date
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- Expired - Fee Related
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- 229920001971 elastomer Polymers 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
A step shock-absorbing raised shoe heel, fashionably raised for ladies and gentlemen's footwear, of a high-heeled shape or having a conical wedge shape (22), having an upper surface (2) and a lower bottom surface (7), comprising an inelastic, nonpliable rigid inner core body (1) and a springy elastic, rubber-flexible soft outer envelope (6), manufactured in one piece container structure. The outer envelope (6) encloses the core body (1) at least on the bottom side (5c) or walking side and on the circumferential side (5b). The core body (1) can also be enveloped within the outer envelope (6) on all sides, as well as on it upper side (5a). The rigid inner core body (1) of the shoe heel represents the stabilizing unit and the elastic outer envelope (6) represents the step shock absorbing unit.
Description
The invention relates to a raised shoe heel, for footwear of the high-heeled shape or having a conical wedge shape, which includes a core adapted to the shape of the heel as well as a onepiece outer envelope made from rubberflexible material which encovers the core.
From the Patent No. DE 29 33 393 C1 is known a shaped sole with a flat, wide shoe heel having a low height which is step shock absorbing and which includes a soft elastic constructed core with a high inherent shock-absorbing coefficient and an outer envelope manufactured in one-piece structure, closed at the lower bottom side, made of a flexible synthetic or rubber material representing the shock-absorbing unit.
The outer heel wall represents the spring unit, while a shock-absorbing unit is arranged in the inner hollow space of the heel, made of a foam or elastic synthetic material with a high self shock-absorbing coefficient (=soft).
An additional element is formed by an inner arranged coil spring which is filled with gas. Here, the outer envelope also represents the spring unit and has a core representing the shock-absorbing unit which is pliable in the same manner as the outer spring unit and which in unloaded condition has the same height as the spring unit, whereby during load the outer envelope and the core are compressed equally in the same extend.
Thereby it is possible that the outer casing is compressed up to the core during load. For flat sporty footwear this invention is an optimal solution for two step shock absorbency, whereby the human body can save energy and whereby the jump joints are extremely relieved.
For a raised shoe heel of a larger height wherein the heel end becomes thinner and the step floorspace is reduced, no stability would be achieved with a soft elastic construed core since the step shock-absorbing feature of the component's soft core and soft envelope would break the heel into lateral direction. The height of the soft elastic core is equal to the height of the soft elastic outer envelope. Thus a step executive function would not be ensured.
The DE 29 98 023 A1 discloses a fashionable, raised heel comprising different wedge parts. The bevel intermediary layers are made of an elastic material are fixed on an upper and a lower bottom side adjacent area and preferably having about the same thickness over the total heel cross section. The object of the invention is to provide a shoe heel wherein a sufficient spring characteristic is provided but a horizontal displacement of the lower part of the heel is reduced to a minimum. This object should be solved in that both adjacent areas are provided with abutting opposite first and second segments, the first is directed obliquely from the upper side to the lower bottom side in walking direction and the second is directed in the opposite direction thereto. Since, in this method, the heel is composed of several parts and these parts are constantly exposed to a high degree of mobility by a strong compression and decompression such a construction will have to offset problems of durability and it will be difficult to realize such a heel construction in almost all fashionably raised heel shapes, as a high cost factor has to be taken into consideration.
4. The Patent No. DE 23 12 fl38 C 2 discloses a heel, whereby above the walking face on the inner heel side a largely rigid spacer piece and on the outer heel side a springy, compressible cushioned wedge are arranged extending over the whole length of the heel and tapering with respect to the lateral direction of the inner heel side, whereby the cushioned wedge is dimensioned in such a manner that a larger height is measured on the outer face than on the inner face in unloaded condition, so that in unloaded condition the upper heel face is arranged at an acute angle with respect to the walking face, whereby the cushioned wedge is compressible by load of the wearer's weight to such an extent until the upper heel face is substantially aligned parallel to the walking face. The known cushioned wedge bulges laterally to the outside resulting from compression over the edge of the walking face and the connecting face. The heel is flat and wide. This type of heel is not suitable for increased heel heights since the wedges would be too small to affect effectiveness.
In the FR-A 795 737 is suggested to stabilize a heel which is made from Caoutchouc or the like elastic material by a stiffen core. The shockabsorbency is reached essentially by the heel patch.
The heel-construction in accordance with the US-A 50 026 designates, to attach in a heel made from rubber or similar material a wooden core, whereby the wooden core is only designated for the purpose to attach the heel onto the shoe bottom by nails or brackets. The sidewalls of the outer envelope are relatively thin. The outer envelope is firmly attached together with the core by vulcanization. Furthermore for the shockabsorbency it is solely proposed, to place more rubber-material beneath the core.
o-~ ~"
w~, Summary of the Invention The task of the present invention is to create a raised shoe-heel in the high-heeled shape or the conical wedge-shape, which is distinguished both by a high mechanical stability against lateral evasiveness and/or crack as well as through a high shockabsorbency.
According to an aspect of the present invention a raised shoe-heel of the high-heeled type or conical wedge shape, the heel comprises a) a stabilizing core conformed to the shape of the heel, for securing the stability of the heel, the core made of an inelastic, unpliable, hard material; and b) a one piece springy-elastic outer envelope, closed at the lower bottom side and made of a soft elastic, rubber, flexible material which encovers the stabilizing core and is held at the core in loose connection, such that a side of the springy-elastic outer envelope extends above the side of the rigid inner core when in a non-compressed, unloaded state, and such that the springy-elastic outer envelope is compressible elastically in lateral direction of the shoe heel absorbing the shock entailed by a shoe wearer's weight stepping down on the shoe heel.
The designated core according to the invention is created either solid or hollow. The core can consist from wood or hard synthetic material.
r ...
_~..: .--__._._ Detailed Description of the Preferred Embodiments The outer envelope is preferably made from rubberflexible material which is to be varied in its shore hardness degree.
The outer envelope (6) is manufactured in one-piece structure, for example made from Polyurethane, thermical rubber, thermoplastic rubber, other soft synthetic materials, the Shore hardness of which are also to be varied, so that the heel is provided with a vertically elastic compressible part in the direction of its longitudinal axis, absorbing the weight during step in a springy elastic manner, and which is higher in unloaded condition than the inelastic core. The soft outer envelope resulting from the different shapes, corresponding to those of the hard core has on the lower bottom side , upper side and lateral side walls .
exactly there its greatest thickness, The shape of the heel is variable with regard to height, width, depth and graduations. The heel patch is injection molded in one-piece structure together with the outer walls of the outer envelope or is separately manufactured for assembly, or as repair spare part in .standard height and for leg regulation in an elevated height. It consists of the same material as the outer envelope with one or a plurality of pins made of hard synthetic material which are inserted during repair into the predilled holes of the core's lower bottom face.
The inelastic core and the soft outer envelope correspond accurately to one another on the inner walls. The outer walls define the prepared injection mold for the injection molding operation. By changing the shape on the upper surface and the upper outside edge of the core (rounded off graduation, hook acute or straight, surtace totally straight or flattened on the outside) it is firstly achieved to lift off the envelope after removing the heel from the shaft, in that the flanged outer envelope border is hooked correspondingly (rounded off, acute or straight) onto the rim graduation of the core Q and whereby secondly the removability of the envelope is achieved by a snap locking of the flanged outer envelope _r border with a corresponding lateral flattened upper surtace of the core), without being necessary to remove the total heel from the shaft. The envelope is clamped into position when attached to the shaft. The envelope can either be hooked onto the core in one operating procedure, or the core is already inserted into the mold before the molding procedure. No fixed connection exists between the core and the outer envelope .
Attachment to the shaft is performed by screwing, bonding, nailing , by pressure pin and nails or by other methods. In this case the closure of the heel is performed by the core surtace and the higher side walls of the outer envelope pointing to the upper side towards the shaft.
If the heel is manufactured with a closed (9a) lid or a lid which is sealed by locking nipple or grooves , the hard core body has a totally straight upper surtace (1 c) and the closure of the heel is pertormed towards the shaft with the lid and the side walls of the outer envelope. The connection from the core to the outer envelope is loose (6a) or firm (8a), depending on the use. The envelope can either be hooked onto the core (6a) in separate operation, or the core is inserted into the mold prior to the injection molding process. Attachment to the shoe shaft is pertormed with screws and nails or in any other way, whereby the screw and nails penetrate through the soft outer envelope lid (9, 9a) into the hard core body . For stabilizing the screw a metal or hard synthetic material ring surrounding the screw is inserted into a corresponding recess in the lid. The outer envelope lid is connected by means of bonding or loosely to the core body :
the outer envelope with lid is loose on all inner walls, without being connected to the core or manufactured with permanent lid bonding at the upper core surtace, without connection to the lateral and lower bottom side of the inner walls to the core.
If the heel is manufactured without flange and outer envelope lid the soft outer envelope is permanently connected to the hard core . The attachment to the shoe shaft is realized by means of screws and nails. In this case the closure of the heel is performed with the core and the slightly raised side walls pointing to the shaft. All outer side walls of the heel are manufactured with or without incorporated conical grooves, depending on the respective form of use. The degree of shock absorption is higher with grooves and soft heel lid than without incorporated grooves and soft heel lid, so that the compression in step can yield laterally into the grooves due to a deformation of the material and attributing increased elasticity in the decompression procedure... The soft outer envelope is in all variants in unloaded condition higher than the hard core .
In the versions with outer envelope flange without lid the outer envelope can also be permanently connected to the core at the lateral side walls of the outer envelope or with the lid, the outer envelope at the upper surface of the core, depending on the form of use.
The above described heel is provided in a further variant with an outer envelope manufactured in one-piece structure and a hard core which contains not only the predrilled holes for the attaching screw to the shaft, but also predrilled holes in the core's lower bottom surface for any necessary repair. In the repair operation in the height of the heel patch part of the outer envelope, manufactured in one-piece structure, is separated and a new heel patch in standard or elevated height, consisting of the material as the outer envelope, is inserted with hard synthetic material pins., .
The heel is also to be manufactured in that the outer envelope is injection molded around the core with a minimum layer at the core's lower bottom face and the heel patch is attached extra. The heel patch is also composed of the material as that of the outer envelope and is inserted in the actual heel with hard synthetic pins .
The inelastic pins are either foamed onto the heel patch after solidification of the heelpatch or inserted into the mold prior to injection molding process. The fashionable appearance of the envelope is achieved by dyeing the material of the soft outer envelope, or by attaching an additional material onto the outer side walls of the heel.
All heels are to be manufactured as an independent part or together with the sole as one unit . The material of the sole consists of the same material as the heel, or another material.
The different formations of the inelastic core pointing to the lower bottom surface are: Firstly, a parallel conical taper towards the outer higher lateral side wall of the elastic outer envelope , secondly, an inherent conical taper and thirdly, a concave taper with convex bulging . In all shapes of the heel, the height of the core body is to be changed upwards or downwards towards the faces , depending on use.
Shrinkage spots which can easily occur during the injection molding of an independent outer envelope on the finished heel are prevented by inserting the core into the mold prior to the injection molding operation. The outer higher outer envelope wall or lid is clamped into position during the attaching process .
As a result of this measure a relief of the intervertebral discs, the hips and joints while wearing elegant shoes with raised slim heel shape is achieved, this also contributing to maintain the health and fitness of persons by simultaneously high energy savings.
The outer envelope is either removable or fixed resulting from loose or fixed connection to the hard core. Heel repairs are possible by attaching a new heel patch or removing the complete outer envelope. Unproblematic leg regulation is possible by attaching a correspondingly high heel patch. As a result of extremely simple and cost effective manufacturing and the variation of possibilities, it is achieved that the heel is applicable in all price groups. __ _ _ _-_________ _._____--.
Exemplified embodiments are explained in the following with respect to fig. 1 to 18. It displays:
Fig. 1: a longitudinal section of a high-heeled shape with removable rounded off graduated flanged outer envelope;
Fig. 2: a cross section of a heel with hollow, straight graduated core body, and removable flanged outer envelope,;
Fig. 3: a longitudinal section of a high-heeled shape with a straight upper surface of the core and a firmly attached outer envelope lid;
Fig. 4: a cross section of a heel with hollow core body, with straight graduated core body, flanged outer envelope, removable;
Fig. 5: a longitudinal section of a high-heeled shape with a straight upper surface of the solid core body, without lid, whereby the core is firmly connected to the lateral inner side walls of the outer envelope;
Fig. 6: a longitudinal section of a high-heeled shape with hooked graduated core and a flanged outer envelope, as well as convex formation on the lower bottom side of the core ;
Fig. 7: a longitudinal section of the heel with a straight core body on the upper surface, whereby the outer envelope is removable injection molded with a lockable lid,;
Fig. 8: a longitudinal section of a heel with solid core and construed with a flanged border of the outer envelope forming a snap lock with a corresponding core body whereby the outer envelope is removable without removing the heel;
Fig. 9: an enlargement of rim graduations of the hard core and the flanging of outer envelope in the longitudinal section;
Fig. 10: a high-heeled shape,' longitudinal section with independent heel patch in standard and elevated height;
Fig. 11: a longitudinal section through a heel patch in standard and elevated height;
Fig. 12: a side view of high heel shape with grooves at the outer side faces;
Fig. 13: a side view of high heel shape without grooves in the outer side faces;
Fig. 14: a longitudinal section of a high-heeled shape with an inner core extending almost towards the end of the heel in direction of the step face;
Fig. 15: a longitudinal section of a high-heeled shape with a straight core on the upper surface, as well as with lockable, removable outer envelope lid;
Fig. 16: a longitudinal section of a wedge shaped heel - with sole injection molded in one-piece, with graduated core and flanged removable outer envelope,;
__ 9 2129018 Fig. 17: a longitudinal section of a wedge shaped heel manufactured in one-piece, with outer envelope cover and straight upper surface of the core whereby the sole is injection molded with heel;
Fig. 18: a longitudinal section of a wedge shaped heel, independent injection molded, with a graduated core and flanged removable outer envelope;
In the figures the heel is: closed at the lower bottom side 7 and above. The heel has a hard inelastic, nonpliable core 1, representing the stabilizing unit , which is solid 12, or hollow 12a, consisting of hard synthetic material or wood , in different shapes of the upper surtace and outer edge 1 a, 16, rounded off graduation, 1 b, 16 a hook acute or straight, 1 c upper surface totally straight or 1 d, 16 b outer edge flattened, different placed to the face below (21 parallel conical taper, 21 a inherent concave taper, 21 b concave taper with convex bulging), with a vertical displacement of its height towards the upper and lower bottom face 15, 15a,. The core 1 is enveloped on the outer face with a thick layer of soft elastic material 4, which forms the outer envelope representing the shock-absorbin4 unit 6 which is in unloaded condition higher than the inelastic core 7a, and as correspondence to the hard core has its greatest thickness on the lower bottom side 5, upper side 5a or at the side walls 5b The outer envelope 6 is loosely hooked onto the core or loosely connected to all inner envelope walls without being connected to the core 6a. The core can also be firmly attached to all inner side walls of the outer envelope 8, or it is provided that the core's upper surface is only connected firmly to the inner wall of the envelope lid without any connection of the side face and the lower bottom face of the core 8a, whereby the outer envelope 6 has a lockable 9 or closed lid 9a with an attaching ring around a screw 3, 10, and it is provided on the upper end of the side wall a flange corresponding to the core (16 rounded off, 16a acute or straight, 16b forming a snap lock), as well as the outer faces of the outer envelope 6 are provided with or without incorporated grooves 11, 14.
The heel can be manufactured with an independent heel patch and a repair part in standard height 18 and elevated height 18a, or the heel patch is injection molded in the same injection molding operation with the outer wall of the lower bottom side of the outer envelope 6 with predrilled hole in the lower and upper core .The heel is made as an independent part 19 or in the unit sole together with the heel 20. The heel can at the upper side 2a be attached to the shoe shaft by screwing, nailing, bonding 3 or with pressure pins and nails 13 and at the upper side at the shaft the closure is performed with the upper core surface and the higher side walls 2a =3a,c whereby the outer envelope lid 2, 9, 9a and the side walls 2a = 3b are closed. The heel is raised in a larger height and shaped with a proportional thin, small lower bottom face, in the high-heeled shape or conical wedge shape 22; and can be clamped into position with its outer higher wall of the outer envelope or lid during assembly 3d.
Reference of signs and symbols 1 core, inelastic, nonpliable, hard; made of hard synthetic material or wood representing the stabilizing unit;
1 a core with rounded off graduation at the upper outer edge;
1 b core with hooks, acute or straight at the upper outer edge;
1 c core with totally straight upper surface;
1 d core with flattened upper outer edge;
2 upper side of the core or outer envelope lid;
2a Upper side of the outer higher outer envelope walls;
3 nailing, screwing, bonding to the shoe shaft;
3a heel closure towards the shaft with: higher side wall and core face;
3b heel closure towards the shaft with: lid and side wall envelope;
3c heel closure towards the shaft with: core and slightly raised wall;
3d outer wall envelope or lid are clamped into position during assembly;
4 outer face of the core are enveloped with a thick layer of soft elastic material;
From the Patent No. DE 29 33 393 C1 is known a shaped sole with a flat, wide shoe heel having a low height which is step shock absorbing and which includes a soft elastic constructed core with a high inherent shock-absorbing coefficient and an outer envelope manufactured in one-piece structure, closed at the lower bottom side, made of a flexible synthetic or rubber material representing the shock-absorbing unit.
The outer heel wall represents the spring unit, while a shock-absorbing unit is arranged in the inner hollow space of the heel, made of a foam or elastic synthetic material with a high self shock-absorbing coefficient (=soft).
An additional element is formed by an inner arranged coil spring which is filled with gas. Here, the outer envelope also represents the spring unit and has a core representing the shock-absorbing unit which is pliable in the same manner as the outer spring unit and which in unloaded condition has the same height as the spring unit, whereby during load the outer envelope and the core are compressed equally in the same extend.
Thereby it is possible that the outer casing is compressed up to the core during load. For flat sporty footwear this invention is an optimal solution for two step shock absorbency, whereby the human body can save energy and whereby the jump joints are extremely relieved.
For a raised shoe heel of a larger height wherein the heel end becomes thinner and the step floorspace is reduced, no stability would be achieved with a soft elastic construed core since the step shock-absorbing feature of the component's soft core and soft envelope would break the heel into lateral direction. The height of the soft elastic core is equal to the height of the soft elastic outer envelope. Thus a step executive function would not be ensured.
The DE 29 98 023 A1 discloses a fashionable, raised heel comprising different wedge parts. The bevel intermediary layers are made of an elastic material are fixed on an upper and a lower bottom side adjacent area and preferably having about the same thickness over the total heel cross section. The object of the invention is to provide a shoe heel wherein a sufficient spring characteristic is provided but a horizontal displacement of the lower part of the heel is reduced to a minimum. This object should be solved in that both adjacent areas are provided with abutting opposite first and second segments, the first is directed obliquely from the upper side to the lower bottom side in walking direction and the second is directed in the opposite direction thereto. Since, in this method, the heel is composed of several parts and these parts are constantly exposed to a high degree of mobility by a strong compression and decompression such a construction will have to offset problems of durability and it will be difficult to realize such a heel construction in almost all fashionably raised heel shapes, as a high cost factor has to be taken into consideration.
4. The Patent No. DE 23 12 fl38 C 2 discloses a heel, whereby above the walking face on the inner heel side a largely rigid spacer piece and on the outer heel side a springy, compressible cushioned wedge are arranged extending over the whole length of the heel and tapering with respect to the lateral direction of the inner heel side, whereby the cushioned wedge is dimensioned in such a manner that a larger height is measured on the outer face than on the inner face in unloaded condition, so that in unloaded condition the upper heel face is arranged at an acute angle with respect to the walking face, whereby the cushioned wedge is compressible by load of the wearer's weight to such an extent until the upper heel face is substantially aligned parallel to the walking face. The known cushioned wedge bulges laterally to the outside resulting from compression over the edge of the walking face and the connecting face. The heel is flat and wide. This type of heel is not suitable for increased heel heights since the wedges would be too small to affect effectiveness.
In the FR-A 795 737 is suggested to stabilize a heel which is made from Caoutchouc or the like elastic material by a stiffen core. The shockabsorbency is reached essentially by the heel patch.
The heel-construction in accordance with the US-A 50 026 designates, to attach in a heel made from rubber or similar material a wooden core, whereby the wooden core is only designated for the purpose to attach the heel onto the shoe bottom by nails or brackets. The sidewalls of the outer envelope are relatively thin. The outer envelope is firmly attached together with the core by vulcanization. Furthermore for the shockabsorbency it is solely proposed, to place more rubber-material beneath the core.
o-~ ~"
w~, Summary of the Invention The task of the present invention is to create a raised shoe-heel in the high-heeled shape or the conical wedge-shape, which is distinguished both by a high mechanical stability against lateral evasiveness and/or crack as well as through a high shockabsorbency.
According to an aspect of the present invention a raised shoe-heel of the high-heeled type or conical wedge shape, the heel comprises a) a stabilizing core conformed to the shape of the heel, for securing the stability of the heel, the core made of an inelastic, unpliable, hard material; and b) a one piece springy-elastic outer envelope, closed at the lower bottom side and made of a soft elastic, rubber, flexible material which encovers the stabilizing core and is held at the core in loose connection, such that a side of the springy-elastic outer envelope extends above the side of the rigid inner core when in a non-compressed, unloaded state, and such that the springy-elastic outer envelope is compressible elastically in lateral direction of the shoe heel absorbing the shock entailed by a shoe wearer's weight stepping down on the shoe heel.
The designated core according to the invention is created either solid or hollow. The core can consist from wood or hard synthetic material.
r ...
_~..: .--__._._ Detailed Description of the Preferred Embodiments The outer envelope is preferably made from rubberflexible material which is to be varied in its shore hardness degree.
The outer envelope (6) is manufactured in one-piece structure, for example made from Polyurethane, thermical rubber, thermoplastic rubber, other soft synthetic materials, the Shore hardness of which are also to be varied, so that the heel is provided with a vertically elastic compressible part in the direction of its longitudinal axis, absorbing the weight during step in a springy elastic manner, and which is higher in unloaded condition than the inelastic core. The soft outer envelope resulting from the different shapes, corresponding to those of the hard core has on the lower bottom side , upper side and lateral side walls .
exactly there its greatest thickness, The shape of the heel is variable with regard to height, width, depth and graduations. The heel patch is injection molded in one-piece structure together with the outer walls of the outer envelope or is separately manufactured for assembly, or as repair spare part in .standard height and for leg regulation in an elevated height. It consists of the same material as the outer envelope with one or a plurality of pins made of hard synthetic material which are inserted during repair into the predilled holes of the core's lower bottom face.
The inelastic core and the soft outer envelope correspond accurately to one another on the inner walls. The outer walls define the prepared injection mold for the injection molding operation. By changing the shape on the upper surface and the upper outside edge of the core (rounded off graduation, hook acute or straight, surtace totally straight or flattened on the outside) it is firstly achieved to lift off the envelope after removing the heel from the shaft, in that the flanged outer envelope border is hooked correspondingly (rounded off, acute or straight) onto the rim graduation of the core Q and whereby secondly the removability of the envelope is achieved by a snap locking of the flanged outer envelope _r border with a corresponding lateral flattened upper surtace of the core), without being necessary to remove the total heel from the shaft. The envelope is clamped into position when attached to the shaft. The envelope can either be hooked onto the core in one operating procedure, or the core is already inserted into the mold before the molding procedure. No fixed connection exists between the core and the outer envelope .
Attachment to the shaft is performed by screwing, bonding, nailing , by pressure pin and nails or by other methods. In this case the closure of the heel is performed by the core surtace and the higher side walls of the outer envelope pointing to the upper side towards the shaft.
If the heel is manufactured with a closed (9a) lid or a lid which is sealed by locking nipple or grooves , the hard core body has a totally straight upper surtace (1 c) and the closure of the heel is pertormed towards the shaft with the lid and the side walls of the outer envelope. The connection from the core to the outer envelope is loose (6a) or firm (8a), depending on the use. The envelope can either be hooked onto the core (6a) in separate operation, or the core is inserted into the mold prior to the injection molding process. Attachment to the shoe shaft is pertormed with screws and nails or in any other way, whereby the screw and nails penetrate through the soft outer envelope lid (9, 9a) into the hard core body . For stabilizing the screw a metal or hard synthetic material ring surrounding the screw is inserted into a corresponding recess in the lid. The outer envelope lid is connected by means of bonding or loosely to the core body :
the outer envelope with lid is loose on all inner walls, without being connected to the core or manufactured with permanent lid bonding at the upper core surtace, without connection to the lateral and lower bottom side of the inner walls to the core.
If the heel is manufactured without flange and outer envelope lid the soft outer envelope is permanently connected to the hard core . The attachment to the shoe shaft is realized by means of screws and nails. In this case the closure of the heel is performed with the core and the slightly raised side walls pointing to the shaft. All outer side walls of the heel are manufactured with or without incorporated conical grooves, depending on the respective form of use. The degree of shock absorption is higher with grooves and soft heel lid than without incorporated grooves and soft heel lid, so that the compression in step can yield laterally into the grooves due to a deformation of the material and attributing increased elasticity in the decompression procedure... The soft outer envelope is in all variants in unloaded condition higher than the hard core .
In the versions with outer envelope flange without lid the outer envelope can also be permanently connected to the core at the lateral side walls of the outer envelope or with the lid, the outer envelope at the upper surface of the core, depending on the form of use.
The above described heel is provided in a further variant with an outer envelope manufactured in one-piece structure and a hard core which contains not only the predrilled holes for the attaching screw to the shaft, but also predrilled holes in the core's lower bottom surface for any necessary repair. In the repair operation in the height of the heel patch part of the outer envelope, manufactured in one-piece structure, is separated and a new heel patch in standard or elevated height, consisting of the material as the outer envelope, is inserted with hard synthetic material pins., .
The heel is also to be manufactured in that the outer envelope is injection molded around the core with a minimum layer at the core's lower bottom face and the heel patch is attached extra. The heel patch is also composed of the material as that of the outer envelope and is inserted in the actual heel with hard synthetic pins .
The inelastic pins are either foamed onto the heel patch after solidification of the heelpatch or inserted into the mold prior to injection molding process. The fashionable appearance of the envelope is achieved by dyeing the material of the soft outer envelope, or by attaching an additional material onto the outer side walls of the heel.
All heels are to be manufactured as an independent part or together with the sole as one unit . The material of the sole consists of the same material as the heel, or another material.
The different formations of the inelastic core pointing to the lower bottom surface are: Firstly, a parallel conical taper towards the outer higher lateral side wall of the elastic outer envelope , secondly, an inherent conical taper and thirdly, a concave taper with convex bulging . In all shapes of the heel, the height of the core body is to be changed upwards or downwards towards the faces , depending on use.
Shrinkage spots which can easily occur during the injection molding of an independent outer envelope on the finished heel are prevented by inserting the core into the mold prior to the injection molding operation. The outer higher outer envelope wall or lid is clamped into position during the attaching process .
As a result of this measure a relief of the intervertebral discs, the hips and joints while wearing elegant shoes with raised slim heel shape is achieved, this also contributing to maintain the health and fitness of persons by simultaneously high energy savings.
The outer envelope is either removable or fixed resulting from loose or fixed connection to the hard core. Heel repairs are possible by attaching a new heel patch or removing the complete outer envelope. Unproblematic leg regulation is possible by attaching a correspondingly high heel patch. As a result of extremely simple and cost effective manufacturing and the variation of possibilities, it is achieved that the heel is applicable in all price groups. __ _ _ _-_________ _._____--.
Exemplified embodiments are explained in the following with respect to fig. 1 to 18. It displays:
Fig. 1: a longitudinal section of a high-heeled shape with removable rounded off graduated flanged outer envelope;
Fig. 2: a cross section of a heel with hollow, straight graduated core body, and removable flanged outer envelope,;
Fig. 3: a longitudinal section of a high-heeled shape with a straight upper surface of the core and a firmly attached outer envelope lid;
Fig. 4: a cross section of a heel with hollow core body, with straight graduated core body, flanged outer envelope, removable;
Fig. 5: a longitudinal section of a high-heeled shape with a straight upper surface of the solid core body, without lid, whereby the core is firmly connected to the lateral inner side walls of the outer envelope;
Fig. 6: a longitudinal section of a high-heeled shape with hooked graduated core and a flanged outer envelope, as well as convex formation on the lower bottom side of the core ;
Fig. 7: a longitudinal section of the heel with a straight core body on the upper surface, whereby the outer envelope is removable injection molded with a lockable lid,;
Fig. 8: a longitudinal section of a heel with solid core and construed with a flanged border of the outer envelope forming a snap lock with a corresponding core body whereby the outer envelope is removable without removing the heel;
Fig. 9: an enlargement of rim graduations of the hard core and the flanging of outer envelope in the longitudinal section;
Fig. 10: a high-heeled shape,' longitudinal section with independent heel patch in standard and elevated height;
Fig. 11: a longitudinal section through a heel patch in standard and elevated height;
Fig. 12: a side view of high heel shape with grooves at the outer side faces;
Fig. 13: a side view of high heel shape without grooves in the outer side faces;
Fig. 14: a longitudinal section of a high-heeled shape with an inner core extending almost towards the end of the heel in direction of the step face;
Fig. 15: a longitudinal section of a high-heeled shape with a straight core on the upper surface, as well as with lockable, removable outer envelope lid;
Fig. 16: a longitudinal section of a wedge shaped heel - with sole injection molded in one-piece, with graduated core and flanged removable outer envelope,;
__ 9 2129018 Fig. 17: a longitudinal section of a wedge shaped heel manufactured in one-piece, with outer envelope cover and straight upper surface of the core whereby the sole is injection molded with heel;
Fig. 18: a longitudinal section of a wedge shaped heel, independent injection molded, with a graduated core and flanged removable outer envelope;
In the figures the heel is: closed at the lower bottom side 7 and above. The heel has a hard inelastic, nonpliable core 1, representing the stabilizing unit , which is solid 12, or hollow 12a, consisting of hard synthetic material or wood , in different shapes of the upper surtace and outer edge 1 a, 16, rounded off graduation, 1 b, 16 a hook acute or straight, 1 c upper surface totally straight or 1 d, 16 b outer edge flattened, different placed to the face below (21 parallel conical taper, 21 a inherent concave taper, 21 b concave taper with convex bulging), with a vertical displacement of its height towards the upper and lower bottom face 15, 15a,. The core 1 is enveloped on the outer face with a thick layer of soft elastic material 4, which forms the outer envelope representing the shock-absorbin4 unit 6 which is in unloaded condition higher than the inelastic core 7a, and as correspondence to the hard core has its greatest thickness on the lower bottom side 5, upper side 5a or at the side walls 5b The outer envelope 6 is loosely hooked onto the core or loosely connected to all inner envelope walls without being connected to the core 6a. The core can also be firmly attached to all inner side walls of the outer envelope 8, or it is provided that the core's upper surface is only connected firmly to the inner wall of the envelope lid without any connection of the side face and the lower bottom face of the core 8a, whereby the outer envelope 6 has a lockable 9 or closed lid 9a with an attaching ring around a screw 3, 10, and it is provided on the upper end of the side wall a flange corresponding to the core (16 rounded off, 16a acute or straight, 16b forming a snap lock), as well as the outer faces of the outer envelope 6 are provided with or without incorporated grooves 11, 14.
The heel can be manufactured with an independent heel patch and a repair part in standard height 18 and elevated height 18a, or the heel patch is injection molded in the same injection molding operation with the outer wall of the lower bottom side of the outer envelope 6 with predrilled hole in the lower and upper core .The heel is made as an independent part 19 or in the unit sole together with the heel 20. The heel can at the upper side 2a be attached to the shoe shaft by screwing, nailing, bonding 3 or with pressure pins and nails 13 and at the upper side at the shaft the closure is performed with the upper core surface and the higher side walls 2a =3a,c whereby the outer envelope lid 2, 9, 9a and the side walls 2a = 3b are closed. The heel is raised in a larger height and shaped with a proportional thin, small lower bottom face, in the high-heeled shape or conical wedge shape 22; and can be clamped into position with its outer higher wall of the outer envelope or lid during assembly 3d.
Reference of signs and symbols 1 core, inelastic, nonpliable, hard; made of hard synthetic material or wood representing the stabilizing unit;
1 a core with rounded off graduation at the upper outer edge;
1 b core with hooks, acute or straight at the upper outer edge;
1 c core with totally straight upper surface;
1 d core with flattened upper outer edge;
2 upper side of the core or outer envelope lid;
2a Upper side of the outer higher outer envelope walls;
3 nailing, screwing, bonding to the shoe shaft;
3a heel closure towards the shaft with: higher side wall and core face;
3b heel closure towards the shaft with: lid and side wall envelope;
3c heel closure towards the shaft with: core and slightly raised wall;
3d outer wall envelope or lid are clamped into position during assembly;
4 outer face of the core are enveloped with a thick layer of soft elastic material;
5 corresponding outer envelope showing its greatest thickness at various locations;
5 greatest thickness below towards the step face;
5a greatest thickness at the upper surface;
5b greatest thickness at the side walls;
5 greatest thickness below towards the step face;
5a greatest thickness at the upper surface;
5b greatest thickness at the side walls;
6 one-piece structured, soft elastic, rubber flexible outer envelope representing the shock-absorbing unit;
6a outer envelope is loosely hooked onto the core or loosely injection molded at all inner envelope walls , without being connected to the core;
6a outer envelope is loosely hooked onto the core or loosely injection molded at all inner envelope walls , without being connected to the core;
7 heel is closed on the upper side and lower bottom side;
7a elastic outer envelope is higher than the inelastic core in unloaded condition;
7a elastic outer envelope is higher than the inelastic core in unloaded condition;
8 core is firmly attached to all inner walls of the higher outer envelope;
8a core upper surtace pointing towards the shaft is firmly connected with the inner walls of the outer envelope lid without connection of the side and lower bottom face of the core;
8a core upper surtace pointing towards the shaft is firmly connected with the inner walls of the outer envelope lid without connection of the side and lower bottom face of the core;
9 open outer envelope lid, on one side injection molded with the wall of the envelope in one operation process, sealing by pressure nipple or locking grooves;
9a outer Envelope lid, sealed with the outer walls in one injection molding operation process;
metal or hard synthetic ring around the attaching screws;
11 soft outer envelope with incorporated grooves;
5 12 solid core body;
12a hollow core body;
13 attaching with pressure pin and nails;
14 soft outer envelope with smooth outer faces, without grooves;
vertical displacement of the core almost towards the step face;
9a outer Envelope lid, sealed with the outer walls in one injection molding operation process;
metal or hard synthetic ring around the attaching screws;
11 soft outer envelope with incorporated grooves;
5 12 solid core body;
12a hollow core body;
13 attaching with pressure pin and nails;
14 soft outer envelope with smooth outer faces, without grooves;
vertical displacement of the core almost towards the step face;
10 15a vertical displacement of the core towards the upper side surtace;
16 upper end of the outer envelope side walls has a corresponding flange to the core, outer envelope removable:
16 rounded off;
16a acute or straight;
15 16b forming a snap lock;
17 heel patch .
18 heel patch, single in standard height;
18a heel patch, single with elevated height;
19 sole and heel manufactured in two pieces;
20 sole and heel manufactured in one piece;
21 lower bottom core shape: parallel conical taper towards the outer envelope;
21 a lower bottom core shape: inherent conical taper;
21 b lower bottom core shape: concave taper with convex bulging;
22 heel raised in larger height with comparatively small, narrow lower bottom face, in high-heeled - or conical wedge-shape;
16 upper end of the outer envelope side walls has a corresponding flange to the core, outer envelope removable:
16 rounded off;
16a acute or straight;
15 16b forming a snap lock;
17 heel patch .
18 heel patch, single in standard height;
18a heel patch, single with elevated height;
19 sole and heel manufactured in two pieces;
20 sole and heel manufactured in one piece;
21 lower bottom core shape: parallel conical taper towards the outer envelope;
21 a lower bottom core shape: inherent conical taper;
21 b lower bottom core shape: concave taper with convex bulging;
22 heel raised in larger height with comparatively small, narrow lower bottom face, in high-heeled - or conical wedge-shape;
Claims (15)
1. A raised shoe-heel of the high-heeled type or conical wedge shape, said heel comprising :
a) a stabilizing core conformed to the shape of the heel, for ensuring the stability of the heel, said core made of an non-elastic, non-unpliable, hard material; and b) a one piece springy-elastic outer envelope, closed at the lower bottom side and made of a soft elastic, rubber flexible material which encases the core and is held at the core in a connection, in such a manner that a side of the springy-elastic outer envelope extends above the side of the rigid inner core when in a non-compressed, unloaded state, and such that the outer envelope is compressible elastically in lateral direction of the shoe heel absorbing the shock entailed by a shoe wearer's weight stepping down on the shoe heel.
a) a stabilizing core conformed to the shape of the heel, for ensuring the stability of the heel, said core made of an non-elastic, non-unpliable, hard material; and b) a one piece springy-elastic outer envelope, closed at the lower bottom side and made of a soft elastic, rubber flexible material which encases the core and is held at the core in a connection, in such a manner that a side of the springy-elastic outer envelope extends above the side of the rigid inner core when in a non-compressed, unloaded state, and such that the outer envelope is compressible elastically in lateral direction of the shoe heel absorbing the shock entailed by a shoe wearer's weight stepping down on the shoe heel.
2. A shoe-heel in accordance with claim 1, characterized in, that the core consists of hard synthetic material or wood and is shaped solid or hollow, whereby the upper side is shaped either totally plain or at the side of the upper outer edge with a gradation or flattening.
3. A shoe-heel in accordance with claim 1 or 2, characterized in, that the upper side of the core is shaped plain, convex or concave.
4. A shoe-heel in accordance with any one of claims 1 to 3 characterized in, that the outer envelope envelops the core at all sides, particularly displays a cover extending over the upper side of the core.
5. A shoe-heel in accordance with claim 4, characterized in, that the cover is a closing element, which is snapable with the outer envelope by sealing nipples and/or grooves.
6. A shoe-heel in accordance with any one of claims 1 to 4, characterized in, that the outer envelope at the upper edge of the core is snapable, particularly through one the upper edge of the core overlapping border or a snap lock.
7. A shoe-heel in accordance with claim 6, characterized in, that at the outer faces of the outer envelope are shaped grooves, to increase the shock absorbency.
8. A shoe-heel in accordance with any one of claims 1 to 7, characterized in, that the heel includes a separate heel-patch in standard or elevated height, which is manufactured from the same material as the outer envelope, and either separately fastened by means of hart synthetic pins at the core or is attached in one pieced by an injection molding process together with the outer envelope.
9. A shoe-heel in accordance with any one of claims 1 to 8, characterized in, that the outside of the outer envelope is coated with a flexible layer made from leather or synthetic, or is covered with a layer of dyed elastic skin, or is dyed.
10. A shoe-heel in accordance with any one of claims 1 to 9, characterized in, that the core has at the upper side predrilled holes for an attachment at the shaft of an associated shoe and/or predrilled holes at the underside for the attachment of the heel-patch.
11. A shoe-heel in accordance with any one of claims 1 to 10, characterized in, that the shoe-heel forms with the sole of the shoe a united component, which is connectably attached to the shaft of the shoe, by means of glue, vulcanization, nails, pressure pins or screws.
12. A shoe-heel in accordance with any one of claims 1 to 11, characterized in, that the outer envelope is made from a thermoplastic material such as caoutchouc, Polyurethane or rubber.
13. A shoe-heel in accordance with any one of claims 1 to 12, characterized in, that the heel displays a comparatively narrow bottom-base.
14. A shoe-heel in accordance with any one of claims 1 to 13, characterized in, that the wall of the outer envelope is shaped differently thick, particularly displays their largest intensity at the underside, upper side or a side.
15. A combination of a shoe heel in accordance with any one of claims 1 to 14, attached with a shoe.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG9201107.1U | 1992-01-30 | ||
| DE9201107U DE9201107U1 (en) | 1992-01-30 | 1992-01-30 | Shoe heel, cushioned, fashionably raised for women's and men's footwear, in stiletto or conical wedge shape |
| DE4219152A DE4219152C3 (en) | 1992-01-30 | 1992-06-11 | Impeded shoe heel |
| DEP4219152.1 | 1992-06-11 | ||
| WOPCT/DE92/00563 | 1992-07-03 | ||
| PCT/DE1992/000563 WO1993014660A1 (en) | 1992-01-30 | 1992-07-03 | Cushioned, higher height or wedge-type heel |
| DEG9209230.6U | 1992-07-10 | ||
| DE9209230U DE9209230U1 (en) | 1992-01-30 | 1992-07-10 | Higher heel, cushioned for footwear |
| DEG9213302.9U | 1992-10-04 | ||
| DE9213302U DE9213302U1 (en) | 1992-01-30 | 1992-10-04 | Higher heel, cushioned in stiletto or conical wedge shape |
| WOPCT/DE92/00845 | 1992-10-07 | ||
| PCT/DE1992/000845 WO1993014661A1 (en) | 1992-01-30 | 1992-10-07 | Cushioned, higher height heel for shoes, of the high heel type or having a wedge shape |
| PCT/DE1993/000075 WO1993014662A1 (en) | 1992-01-30 | 1993-02-01 | Cushioned, fashionably raised heel for ladies' and gentlemen's footwear, of the high heel type or having a wedge shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2129018A1 CA2129018A1 (en) | 1993-08-05 |
| CA2129018C true CA2129018C (en) | 1999-11-09 |
Family
ID=29255604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002129018A Expired - Fee Related CA2129018C (en) | 1992-01-30 | 1993-02-01 | Step shock absorbing, fashionably raised heel for ladies' and gentlemen's footwear of the high-heeled shape or having a conical wedge shape |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2129018C (en) |
-
1993
- 1993-02-01 CA CA002129018A patent/CA2129018C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2129018A1 (en) | 1993-08-05 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |