CA2325118C - Antislip apparatus for footwear - Google Patents
Antislip apparatus for footwear Download PDFInfo
- Publication number
- CA2325118C CA2325118C CA002325118A CA2325118A CA2325118C CA 2325118 C CA2325118 C CA 2325118C CA 002325118 A CA002325118 A CA 002325118A CA 2325118 A CA2325118 A CA 2325118A CA 2325118 C CA2325118 C CA 2325118C
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- Canada
- Prior art keywords
- support
- plate
- prongs
- box element
- engagement surface
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
- A43C15/00—Non-skid devices or attachments
- A43C15/14—Non-skid devices or attachments with outwardly-movable spikes
Abstract
The object of the invention is an antislip apparatus for footwear which is made up of a structure (1) able to fit on a region (2) of the sole and/or the heel of a shoe in contact with the ground and comprising ground-gripping means (50) made up of one or more crampon-like prongs (50), means (6) for moving the grip means (50) and able to dispose the latter to either a grip or rest positions in which, respectively, the prongs protrude from the lower surface (20) of the shoe or result inwardly of the same surface, and means (7) for operating the driving means (6) being accessible from the same lower surface (20) of the shoe.
Description
Antislip Apparatus for Footwear The present invention relates to an antislip apparatus for footwear.
It is known to be quite difficult to walk on surfaces having low coefficient of friction, such as frozen grounds, roadways and sidewalks.
To overcome this problem, the prior art has provided shoes with rubber soles with marked protrusions or engravings. Such shoes, although having a sufficient grip on fresh snow, do not provide a safe hold in case of frozen surfaces.
An alternative to this solution is represented by metal, crampon-like prongs to be applied to the shoes. This solution provides a good grip but the result is bulky and makes it necessary to add an accessory to the shoes which thus cannot be used as such.
An object of some embodiments of the present invention is an apparatus able to provide a sufficient grip on slippery grounds for footwear of sport type as well of traditional type for everyday use.
According to an aspect of the present invention, there is provided an antislip apparatus for footwear to be fitted on a region of a sole and/or a heel of a shoe defining an engagement surface in contact with the ground surface, the antislip apparatus comprising: ground gripping means for engaging the ground surface, said gripping means including a support and one or more crampon-like prongs disposed on said support and extending downwardly from said support; cam means interacting with said support for moving said one or more prongs to one of a grip position with said one or more prongs extending beyond the level of the engagement surface or to a rest position with said one or more prongs disposed inwardly of the engagement surface, said cam means comprising a plate and one or more cams acting on one of said support and said plate to vary a distance between said support and said plate to move said one or more prongs; and operating means for operating said cam means, said operating means comprising a cylindrical rotor adapted for moving said plate, said rotor being disposed transverse to said support and having at a lower end thereof, accessible from the engagement surface side of the shoe, a seat defined by a groove or cut; and a holding box element containing the support, said cam means and said operating means, said holding box element being provided relative to the engagement surface, said holding box element including an opening allowing access to said operating means and having one or more slots through which said one or more prongs extend in said grip position.
According to another aspect of the invention, there is provided an antislip apparatus and a shoe part combination, the combination comprising: a footwear part defining an engagement surface for contact with the ground surface; and an antislip apparatus including one or more prongs for engaging the ground surface, a cam drive for moving the one or more prongs between a grip position with the one or more prongs extending transverse to the engagement surface and extending beyond the level of the engagement surface and a rest position with the one or more prongs disposed transverse to the engagement surface and disposed inwardly of the engagement surface, and an actuator connected to said cam drive for operating the cam drive, said actuator having an actuating interface accessible from the engagement surface side of the antislip apparatus.
It is known to be quite difficult to walk on surfaces having low coefficient of friction, such as frozen grounds, roadways and sidewalks.
To overcome this problem, the prior art has provided shoes with rubber soles with marked protrusions or engravings. Such shoes, although having a sufficient grip on fresh snow, do not provide a safe hold in case of frozen surfaces.
An alternative to this solution is represented by metal, crampon-like prongs to be applied to the shoes. This solution provides a good grip but the result is bulky and makes it necessary to add an accessory to the shoes which thus cannot be used as such.
An object of some embodiments of the present invention is an apparatus able to provide a sufficient grip on slippery grounds for footwear of sport type as well of traditional type for everyday use.
According to an aspect of the present invention, there is provided an antislip apparatus for footwear to be fitted on a region of a sole and/or a heel of a shoe defining an engagement surface in contact with the ground surface, the antislip apparatus comprising: ground gripping means for engaging the ground surface, said gripping means including a support and one or more crampon-like prongs disposed on said support and extending downwardly from said support; cam means interacting with said support for moving said one or more prongs to one of a grip position with said one or more prongs extending beyond the level of the engagement surface or to a rest position with said one or more prongs disposed inwardly of the engagement surface, said cam means comprising a plate and one or more cams acting on one of said support and said plate to vary a distance between said support and said plate to move said one or more prongs; and operating means for operating said cam means, said operating means comprising a cylindrical rotor adapted for moving said plate, said rotor being disposed transverse to said support and having at a lower end thereof, accessible from the engagement surface side of the shoe, a seat defined by a groove or cut; and a holding box element containing the support, said cam means and said operating means, said holding box element being provided relative to the engagement surface, said holding box element including an opening allowing access to said operating means and having one or more slots through which said one or more prongs extend in said grip position.
According to another aspect of the invention, there is provided an antislip apparatus and a shoe part combination, the combination comprising: a footwear part defining an engagement surface for contact with the ground surface; and an antislip apparatus including one or more prongs for engaging the ground surface, a cam drive for moving the one or more prongs between a grip position with the one or more prongs extending transverse to the engagement surface and extending beyond the level of the engagement surface and a rest position with the one or more prongs disposed transverse to the engagement surface and disposed inwardly of the engagement surface, and an actuator connected to said cam drive for operating the cam drive, said actuator having an actuating interface accessible from the engagement surface side of the antislip apparatus.
Advantages of some embodiments of the present invention lie in that the antislip apparatus provides a suitable grip on the ground and is fully integrated with the shoe; that the apparatus is undetectable by anyone looking at the shoe so that it can be used on traditional and/or elegant footwear; that the apparatus is disposed as a box-like element so that it can be easily and quickly associated to the shoe and for this reason allows also a mass production for great number of shoes; that the apparatus results very well integrated in the shoe, without any part protruding from the shoe (in non-operative condition of the apparatus) and without any part able to damage itself and other objects; that the apparatus is of simple and ready utilization; exhibits a robust structure and is able to maintain its features also after a prolonged wear. Another advantage lies in that it is possible to manufacture (and to mass-produce) heels (and/or soles) containing the antislip apparatus and able to be utilized in the manufacture of shoes of sport type as well of traditional type for everyday use, without modifying the structure of the shoes.
These and other advantages and characteristics of embodiments of the invention will be best understood by anyone skilled in the art from a reading of the following description in conjunction with the attached drawings given as a practical exemplification of the invention, but not to be considered in a limitative sense, wherein:
- Figs. la, lb show an embodiment of the invention associated to a heel of a footwear article, in front view and plan view, respectively, with cutaway parts to show others more clearly;
2a - Figs. 2a, 2b are, respectively, a side view and a top view of a detail of the embodiment shown in Figs. la and lb, relating to an operating rotor element;
- Figs. 3a, 3b are, respectively, a top view and a sectioned view on line III-III in Fig. 3a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a driving plate;
- Figs. 4a, 4b are, respectively, a top view and a sectioned view on line IV-IV in Fig. 4a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a cover;
- Figs. 5a, 5b are, respectively, a top view and a sectioned view on line V-V in Fig. 5a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a box-like element; and - Figs. 6a, 6b are, respectively, a side view and a top view of a detail of the embodiment illustrated in Figs. la and 1b, relating to a support for prongs; Fig. 6b illustrating also a detail in sectional view relating to the shape of a slot.
An apparatus constructed according to an embodiment of the present invention and designated by (1) in its entirety, can be associated to a footwear article at a region thereof which faces the lower surface in contact with the ground. In this embodiment, the apparatus (1) is fitted on a heel (2) of a traditional shoe for men, the lower surface of the same shoe being indicated by (20). The apparatus may also be associated to other types of footwear such as sport shoes, mountaineering boots, ski-boots, woman shoes, etc.
2b In the illustrated example, the apparatus (1) comprises a box-like holding element (3) closed by a cover (4).
2c The box-like holding element (3) has a substantially cylindrical, upwardly open shape on the base (30) of which there are provided a central through hole (39) and four through slots (38) larly equidistant.
These and other advantages and characteristics of embodiments of the invention will be best understood by anyone skilled in the art from a reading of the following description in conjunction with the attached drawings given as a practical exemplification of the invention, but not to be considered in a limitative sense, wherein:
- Figs. la, lb show an embodiment of the invention associated to a heel of a footwear article, in front view and plan view, respectively, with cutaway parts to show others more clearly;
2a - Figs. 2a, 2b are, respectively, a side view and a top view of a detail of the embodiment shown in Figs. la and lb, relating to an operating rotor element;
- Figs. 3a, 3b are, respectively, a top view and a sectioned view on line III-III in Fig. 3a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a driving plate;
- Figs. 4a, 4b are, respectively, a top view and a sectioned view on line IV-IV in Fig. 4a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a cover;
- Figs. 5a, 5b are, respectively, a top view and a sectioned view on line V-V in Fig. 5a, of a detail of the embodiment illustrated in Figs. la and lb, relating to a box-like element; and - Figs. 6a, 6b are, respectively, a side view and a top view of a detail of the embodiment illustrated in Figs. la and 1b, relating to a support for prongs; Fig. 6b illustrating also a detail in sectional view relating to the shape of a slot.
An apparatus constructed according to an embodiment of the present invention and designated by (1) in its entirety, can be associated to a footwear article at a region thereof which faces the lower surface in contact with the ground. In this embodiment, the apparatus (1) is fitted on a heel (2) of a traditional shoe for men, the lower surface of the same shoe being indicated by (20). The apparatus may also be associated to other types of footwear such as sport shoes, mountaineering boots, ski-boots, woman shoes, etc.
2b In the illustrated example, the apparatus (1) comprises a box-like holding element (3) closed by a cover (4).
2c The box-like holding element (3) has a substantially cylindrical, upwardly open shape on the base (30) of which there are provided a central through hole (39) and four through slots (38) larly equidistant.
3+,e cover (4) is of circular shape and exhibits a central through hole (40) and a pin (49) which protrudes from the lower face (48), the latter remaining inside when the cover (4) closes the box- like element (3) upon the assembly of the apparatus.
Provided inside the box-like element and inwardly of cover (4) is a prongs support (5), a driving plate (6), an activation rotor (7) and a spring (8).
The prongs support (5) defines the means for gripping the ground and consists, in the illustrated example, of an annular, substantially flat body from which four angularly equidistant prongs (50) protrude orthogonally (that is, disposed at 90 to each other). The prongs (50) are made up of laminae having serrated free ends (59) with such longitudinal development and thickness allowing them to be introduced into straight slots (38) of the box-i;e element (3) previously described. The support (5) for the prongs is also provided with Faai slots having curved development (55) and disposed angularly equidistant along a circular crown (54). In particular, the four slots (55) are offset by 45 to the prongs (50) and are separated by solid lengths (58). Possibly provided between the solid lengths (58) and the slots (55) are flaring ramps (56) likewise those more clearly visible in the enlarged sectional view of the detail in Fig. 6b. The flaring ramps (56) are provided in pairs on the sides of each slot (55) and exhibit a profile extending towards the side of the adjacent solid length (58).
The driving plate (6) is circular in shape and has a square through hole (60) in the middle, and a slot (65) develops along an arc under a preset angle and around the central hole (60) at a distance from the centre corresponding to the spacing between the central hole (40) of cover (4) and the pin (49) provided on the same cover. The width of the slot (65) is such as allow the insertion of the pin (49) into the same slot. Also provided on the lower side (69) ot p!ate (6) are four cams (61) having an arcuate convex profile.
The operating rotor (7) is made up of a substantially cylindrical body with different sections along its height. In its upper end, the rotor (7) has a cylindrical portion (70) of such a diameter as to result insertable into the central hole (40) of cover (4). Under said cylindrical portion (70), the rotor (7) exhibits a square portion (75) which can be inserted into the square hole (60) of the driving plate (6) so as to result solid to the latter during the rotational movement. Provided below the square portion (75) are a central portion (78) of larger cross-section and a lower portion (76) of a diameter corresponding to that of the central hole (39) provided on the box-like element (3). The lower portion (76) has a seat (77) at its free end, which seat is defined by a groove or cut disposed diametrically with respect to the rotor (7).
The seat (77) is thus accessible through the central hole (39) also when the apparatus is assembled.
Once assembled, the apparatus (1) may have the configuration shown in Figs. la and lb. In practice, the box-like element (3) is closed on top by the cover (4) which has its pin (49) extending downwards. Disposed just below the cover (4) is the driving plate (6) into the slot (65) of which the pin (49) goes through, while the square portion (75) of rotor (7), disposed centrally in the apparatus (1), goes through the square hole (60) thereof. The plate (6) has its cams (61) facing downwards and resting on the support (5), the latter being urged upwards by the spring (8) which is made to act between the inner face of the box-like element (3) and the same support (5).
The prongs (50) of support (5) are disposed in correspondence of straight slots (38) of the box-like element (3) and are able to come out thereof when the apparatus (1) is in operative condition, that is, with the prongs (50) in gripping position.
As previously mentioned, the rotor (7) is disposed centrally, solid with the plate (6), and its portions interact with the other structural components of the apparatus (1) as described later on. The upper cylindrical portion (70) is inserted into the central hole (40) of the cover (4); the central portion (78) is disposed inwardly of the prongs support (5), it is not solid with the latter, and the periphery of its lower face (79) is in contact with the upper (inner) face of the cover (3), so that it can rotate relative to the latter; finally, the lower portion (76) has the seat (77) turned downwards so as to allow the rotor (7) to be rotated with ease by means of a coin or a screwdriver or the like.
By rotating the seat (77) and thus the whole rotor (7), the latter drives into rotation the driving plate (6) solid thereto. The rotation of the plate (6) causes the cams (61) to slide along the crown (54) defined by the sequence of slots (55) and solid lengths (58) of the support (5). When the cams (61) are inserted into the slots (55), the apparatus (1) is pack-closed and the prongs (50) do not protrude from the lower surface of the shoe because the spring urges the support (5) upwards. When, on the other hand, the cams (61) interact with the solid lengths (58), the support (5) is urged downwards and the prongs (50) result in a gripping condition, as shown in Fig. la. The return of prongs (50) to the retracted or rest position is caused by the spring (8) urging the support (5) upwards, as the latter is no longer subject to the downwardly directed action of the cams (61).
The movement between the solid lengths (58) and the slots (55) of the crown (54) is made smoother in both directions by the presence of the flaring ramps (56) previously described.
The rotation of the rotor (7) and of plate (6) solid thereto is limited by the extension of the curved slot (65) of plate (6) within which the pin (49) of cover (4) is made to slide.
The association of the apparatus (1) to the footwear article may be made in various ways. In fact, it is possible either to mount the apparatus (1) inside the heel when manufacturing the shoe, or to provide a heel having the apparatus already inside it and associate the heel to the shoe afterwards. It is possible to manufacture heels or soles provided with the apparatus. In case of ski-boots or shoes with plastics or rubber soles, it is possible to embed the apparatus (1) within a portion of the sole.
For example, reference being made to what is illustrated in Fig. la, the structure (1) will result inside the heel (2) and, on the lower surface (20) thereof, 5a slots will be provided allowing the passage of prongs (50) in case of activation of the latter.
In any case, a shoe will be obtained which, when looking at it laterally or from above, will not exhibit any aesthetical differences to a corresponding shoe non equipped with the apparatus and will not present any part protruding from the shoe (in non-operative condition of the apparatus).
Provided inside the box-like element and inwardly of cover (4) is a prongs support (5), a driving plate (6), an activation rotor (7) and a spring (8).
The prongs support (5) defines the means for gripping the ground and consists, in the illustrated example, of an annular, substantially flat body from which four angularly equidistant prongs (50) protrude orthogonally (that is, disposed at 90 to each other). The prongs (50) are made up of laminae having serrated free ends (59) with such longitudinal development and thickness allowing them to be introduced into straight slots (38) of the box-i;e element (3) previously described. The support (5) for the prongs is also provided with Faai slots having curved development (55) and disposed angularly equidistant along a circular crown (54). In particular, the four slots (55) are offset by 45 to the prongs (50) and are separated by solid lengths (58). Possibly provided between the solid lengths (58) and the slots (55) are flaring ramps (56) likewise those more clearly visible in the enlarged sectional view of the detail in Fig. 6b. The flaring ramps (56) are provided in pairs on the sides of each slot (55) and exhibit a profile extending towards the side of the adjacent solid length (58).
The driving plate (6) is circular in shape and has a square through hole (60) in the middle, and a slot (65) develops along an arc under a preset angle and around the central hole (60) at a distance from the centre corresponding to the spacing between the central hole (40) of cover (4) and the pin (49) provided on the same cover. The width of the slot (65) is such as allow the insertion of the pin (49) into the same slot. Also provided on the lower side (69) ot p!ate (6) are four cams (61) having an arcuate convex profile.
The operating rotor (7) is made up of a substantially cylindrical body with different sections along its height. In its upper end, the rotor (7) has a cylindrical portion (70) of such a diameter as to result insertable into the central hole (40) of cover (4). Under said cylindrical portion (70), the rotor (7) exhibits a square portion (75) which can be inserted into the square hole (60) of the driving plate (6) so as to result solid to the latter during the rotational movement. Provided below the square portion (75) are a central portion (78) of larger cross-section and a lower portion (76) of a diameter corresponding to that of the central hole (39) provided on the box-like element (3). The lower portion (76) has a seat (77) at its free end, which seat is defined by a groove or cut disposed diametrically with respect to the rotor (7).
The seat (77) is thus accessible through the central hole (39) also when the apparatus is assembled.
Once assembled, the apparatus (1) may have the configuration shown in Figs. la and lb. In practice, the box-like element (3) is closed on top by the cover (4) which has its pin (49) extending downwards. Disposed just below the cover (4) is the driving plate (6) into the slot (65) of which the pin (49) goes through, while the square portion (75) of rotor (7), disposed centrally in the apparatus (1), goes through the square hole (60) thereof. The plate (6) has its cams (61) facing downwards and resting on the support (5), the latter being urged upwards by the spring (8) which is made to act between the inner face of the box-like element (3) and the same support (5).
The prongs (50) of support (5) are disposed in correspondence of straight slots (38) of the box-like element (3) and are able to come out thereof when the apparatus (1) is in operative condition, that is, with the prongs (50) in gripping position.
As previously mentioned, the rotor (7) is disposed centrally, solid with the plate (6), and its portions interact with the other structural components of the apparatus (1) as described later on. The upper cylindrical portion (70) is inserted into the central hole (40) of the cover (4); the central portion (78) is disposed inwardly of the prongs support (5), it is not solid with the latter, and the periphery of its lower face (79) is in contact with the upper (inner) face of the cover (3), so that it can rotate relative to the latter; finally, the lower portion (76) has the seat (77) turned downwards so as to allow the rotor (7) to be rotated with ease by means of a coin or a screwdriver or the like.
By rotating the seat (77) and thus the whole rotor (7), the latter drives into rotation the driving plate (6) solid thereto. The rotation of the plate (6) causes the cams (61) to slide along the crown (54) defined by the sequence of slots (55) and solid lengths (58) of the support (5). When the cams (61) are inserted into the slots (55), the apparatus (1) is pack-closed and the prongs (50) do not protrude from the lower surface of the shoe because the spring urges the support (5) upwards. When, on the other hand, the cams (61) interact with the solid lengths (58), the support (5) is urged downwards and the prongs (50) result in a gripping condition, as shown in Fig. la. The return of prongs (50) to the retracted or rest position is caused by the spring (8) urging the support (5) upwards, as the latter is no longer subject to the downwardly directed action of the cams (61).
The movement between the solid lengths (58) and the slots (55) of the crown (54) is made smoother in both directions by the presence of the flaring ramps (56) previously described.
The rotation of the rotor (7) and of plate (6) solid thereto is limited by the extension of the curved slot (65) of plate (6) within which the pin (49) of cover (4) is made to slide.
The association of the apparatus (1) to the footwear article may be made in various ways. In fact, it is possible either to mount the apparatus (1) inside the heel when manufacturing the shoe, or to provide a heel having the apparatus already inside it and associate the heel to the shoe afterwards. It is possible to manufacture heels or soles provided with the apparatus. In case of ski-boots or shoes with plastics or rubber soles, it is possible to embed the apparatus (1) within a portion of the sole.
For example, reference being made to what is illustrated in Fig. la, the structure (1) will result inside the heel (2) and, on the lower surface (20) thereof, 5a slots will be provided allowing the passage of prongs (50) in case of activation of the latter.
In any case, a shoe will be obtained which, when looking at it laterally or from above, will not exhibit any aesthetical differences to a corresponding shoe non equipped with the apparatus and will not present any part protruding from the shoe (in non-operative condition of the apparatus).
Claims (18)
1. An antislip apparatus for footwear to be fitted on a region of a sole and/or a heel of a shoe defining an engagement surface in contact with the ground surface, the antislip apparatus comprising:
ground gripping means for engaging the ground surface, said gripping means including a support and one or more crampon-like prongs disposed on said support and extending downwardly from said support;
cam means interacting with said support for moving said one or more prongs to one of a grip position with said one or more prongs extending beyond the level of the engagement surface or to a rest position with said one or more prongs disposed inwardly of the engagement surface, said cam means comprising a plate and one or more cams acting on one of said support and said plate to vary a distance between said support and said plate to move said one or more prongs; and operating means for operating said cam means, said operating means comprising a cylindrical rotor adapted for moving said plate, said rotor being disposed transverse to said support and having at a lower end thereof, accessible from the engagement surface side of the shoe, a seat defined by a groove or cut; and a holding box element containing the support, said cam means and said operating means, said holding box element being provided relative to the engagement surface, said holding box element including an opening allowing access to said operating means and having one or more slots through which said one or more prongs extend in said grip position.
ground gripping means for engaging the ground surface, said gripping means including a support and one or more crampon-like prongs disposed on said support and extending downwardly from said support;
cam means interacting with said support for moving said one or more prongs to one of a grip position with said one or more prongs extending beyond the level of the engagement surface or to a rest position with said one or more prongs disposed inwardly of the engagement surface, said cam means comprising a plate and one or more cams acting on one of said support and said plate to vary a distance between said support and said plate to move said one or more prongs; and operating means for operating said cam means, said operating means comprising a cylindrical rotor adapted for moving said plate, said rotor being disposed transverse to said support and having at a lower end thereof, accessible from the engagement surface side of the shoe, a seat defined by a groove or cut; and a holding box element containing the support, said cam means and said operating means, said holding box element being provided relative to the engagement surface, said holding box element including an opening allowing access to said operating means and having one or more slots through which said one or more prongs extend in said grip position.
2. An apparatus according to claim 1, wherein said support comprises an annular body having one or more annular body slots as well as one or more solid lengths located along a circular crown, said one or more annular body slots being angularly correlated to a position of said one or more prongs.
3. An apparatus according to claim 1, comprising a plurality of said prongs, and wherein said support comprises a substantially flat body from which said prongs extend perpendicularly at angularly equidistant locations, and on which, said body including a circular crown with slots and solid lengths is connected between said slots via flaring ramps.
4. An apparatus according to claim 2 or 3, further comprising:
elastic means for applying a biasing force, wherein said plate and said support are disposed inside said box element, with said plate being located above said support, said elastic means acting between said box element and said support to impart a biasing force in a direction opposite to an action exerted by said cam means on said support upon their interaction with said solid lengths.
elastic means for applying a biasing force, wherein said plate and said support are disposed inside said box element, with said plate being located above said support, said elastic means acting between said box element and said support to impart a biasing force in a direction opposite to an action exerted by said cam means on said support upon their interaction with said solid lengths.
5. An apparatus according to any one of claims 1 to 4, further comprising a cover closing said box element with a pin on a lower face and inwardly of said cover, said plate being able to rotate relative to said cover and said plate having a curved slot inside which said pin is inserted to define a travel of angular displacement corresponding to a preset rotation of said cover with respect to said plate.
6. An apparatus according to any one of claims 1 to 5, wherein said plate includes a central square bore and said rotor includes a corresponding square portion for a stable coupling with said plate.
7. An apparatus according to claim 6, wherein said rotor is made up of a substantially cylindrical body provided with a cylindrical portion located above said square portion and having a diameter for insertion of said cylindrical portion into a central hole of said cover, and said cylindrical body having a central portion of larger cross-section and a lower portion having a diameter corresponding to a central hole formed on said box element, said lower portion having said seat.
8. An antislip apparatus and a shoe part combination, the combination comprising:
a footwear part defining an engagement surface for contact with the ground surface; and an antislip apparatus including one or more prongs for engaging the ground surface, a cam drive for moving the one or more prongs between a grip position with the one or more prongs extending transverse to the engagement surface and extending beyond the level of the engagement surface and a rest position with the one or more prongs disposed transverse to the engagement surface and disposed inwardly of the engagement surface, and an actuator connected to said cam drive for operating the cam drive, said actuator having an actuating interface accessible from the engagement surface side of the antislip apparatus.
a footwear part defining an engagement surface for contact with the ground surface; and an antislip apparatus including one or more prongs for engaging the ground surface, a cam drive for moving the one or more prongs between a grip position with the one or more prongs extending transverse to the engagement surface and extending beyond the level of the engagement surface and a rest position with the one or more prongs disposed transverse to the engagement surface and disposed inwardly of the engagement surface, and an actuator connected to said cam drive for operating the cam drive, said actuator having an actuating interface accessible from the engagement surface side of the antislip apparatus.
9. A combination according to claim 8, wherein said antislip apparatus further comprises a support for said one or more prongs and said cam drive comprises a cam drive interacting with said support so as to vertically move said one or more prongs.
10. A combination according to claim 8, wherein said antislip apparatus further comprises a plurality of said prongs and a support for said prongs, said support comprising an annular body having slots as well as solid lengths located along a circular crown, said slots being angularly correlated to said prongs, said prongs being disposed perpendicular to said support, said cam drive comprising a plate and being led with one or more cams to interact either with said slots or with said solid lengths so as to vary the distance between said support and said plate thereby moving said prongs.
11. A combination according to claim 10, wherein said actuator includes a substantially cylindrical rotor adapted for moving said plate and having said actuating interface at a lower end thereof comprising a seat defined by a groove or cut.
12. A combination according to claim 10 or 11, wherein said antislip apparatus further comprises:
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support; and elastic means for providing an elastic connection acting between said box element and said support, said elastic means imparting a thrust in a direction opposite to an action exerted by said one or more cams on said support upon interaction by said one or more cams with said solid lengths.
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support; and elastic means for providing an elastic connection acting between said box element and said support, said elastic means imparting a thrust in a direction opposite to an action exerted by said one or more cams on said support upon interaction by said one or more cams with said solid lengths.
13. A combination according to claim 10 or 11, wherein said antislip apparatus further comprises:
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support;
a cover closing said box element and having a pin on a lower face of said cover, said pin being inwardly of the apparatus, said plate being rotatable relative to said cover and exhibiting a curved slot inside which said pin is inserted to define an extent of travel of angular displacement corresponding to a preset rotation of the cover with respect to the plate.
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support;
a cover closing said box element and having a pin on a lower face of said cover, said pin being inwardly of the apparatus, said plate being rotatable relative to said cover and exhibiting a curved slot inside which said pin is inserted to define an extent of travel of angular displacement corresponding to a preset rotation of the cover with respect to the plate.
14. A combination according to claim 11, wherein said plate includes a central square bore and said rotor includes a corresponding square portion for a stable coupling with said plate.
15. A combination according to any one of claims 10 to 14, wherein said support is made up of an annular, substantially flat body, said prongs being arranged as angularly equidistant prongs extending perpendicularly from said flat body along a circular crown, said slots being connected between said prongs through flaring ramps.
16. A combination according to claim 9, wherein said cam drive comprises a plate including a central square bore and said actuator comprises a rotor with a corresponding square portion for a stable coupling with said plate.
17. A combination according to claim 16, wherein said antislip apparatus further comprises:
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support;
a cover closing said box element, wherein a cylindrical portion is located above said square portion and has a diameter suitable for insertion thereof into a central hole of said cover, and with a central portion of larger cross-section and a lower portion, said lower portion having a diameter corresponding to a central hole formed on said box element and being provided with said actuating interface.
a box element, wherein said plate and said support are disposed inside said box element, said plate being located above said support;
a cover closing said box element, wherein a cylindrical portion is located above said square portion and has a diameter suitable for insertion thereof into a central hole of said cover, and with a central portion of larger cross-section and a lower portion, said lower portion having a diameter corresponding to a central hole formed on said box element and being provided with said actuating interface.
18. A combination according to claim 8, wherein said cam drive comprises a plate including a central square bore and said actuator comprises a rotor with a corresponding square portion for a stable coupling with said plate.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT99830275T ATE223165T1 (en) | 1999-05-07 | 1999-05-07 | ANTI-SLIP DEVICE FOR FOOTWEAR |
| EP99830275A EP1050225B1 (en) | 1999-05-07 | 1999-05-07 | Antislip apparatus for footwear |
| US09/703,800 US6449880B1 (en) | 1999-05-07 | 2000-11-01 | Antislip apparatus for footwear |
| CA002325118A CA2325118C (en) | 1999-05-07 | 2000-11-06 | Antislip apparatus for footwear |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99830275A EP1050225B1 (en) | 1999-05-07 | 1999-05-07 | Antislip apparatus for footwear |
| US09/703,800 US6449880B1 (en) | 1999-05-07 | 2000-11-01 | Antislip apparatus for footwear |
| CA002325118A CA2325118C (en) | 1999-05-07 | 2000-11-06 | Antislip apparatus for footwear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2325118A1 CA2325118A1 (en) | 2002-05-06 |
| CA2325118C true CA2325118C (en) | 2009-07-21 |
Family
ID=27171398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002325118A Expired - Fee Related CA2325118C (en) | 1999-05-07 | 2000-11-06 | Antislip apparatus for footwear |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6449880B1 (en) |
| EP (1) | EP1050225B1 (en) |
| AT (1) | ATE223165T1 (en) |
| CA (1) | CA2325118C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7490418B2 (en) * | 2006-06-30 | 2009-02-17 | Michel Obeydani | Footwear with manually extendable spikes |
| US8122617B1 (en) * | 2008-05-09 | 2012-02-28 | Dixon Kenneth R | Boot with heel spikes and method of use thereof |
| US9289032B2 (en) | 2010-04-01 | 2016-03-22 | Nike, Inc. | Sole structure with extendable cleat |
| ES2347638B1 (en) * | 2010-05-04 | 2011-09-14 | Cauchos Ruiz-Alejos S.A. | NAIL FIXING SYSTEM FOR A FLOOR OF ANTI-SLIPING FOOTWEAR. |
| RU2447820C1 (en) * | 2010-12-03 | 2012-04-20 | Государственное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет" | Element for prevention shoe sliding |
| US9326567B2 (en) * | 2011-05-23 | 2016-05-03 | Jean Brault | Multi-adaptable power automated traction apparatus |
| RU2561326C1 (en) * | 2014-05-13 | 2015-08-27 | Анатолий Михайлович Шмаков | Anti-slipper for shoes |
| USD825153S1 (en) | 2017-02-02 | 2018-08-14 | Piga Inc. | Soft sole footwear with adjustable plantar arch support |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US264105A (en) * | 1882-09-12 | Ice-creeper | ||
| US1179652A (en) * | 1915-07-22 | 1916-04-18 | Albert C Rightor | Safety-heel. |
| US1232896A (en) * | 1916-10-27 | 1917-07-10 | Carl G Clifford | Antislipping device. |
| US1487976A (en) * | 1923-04-02 | 1924-03-25 | Rossi Joseph | Shoe heel |
| US1607296A (en) * | 1925-07-20 | 1926-11-16 | Noel Barney | Antislipping means |
| FR1116046A (en) * | 1953-12-22 | 1956-05-03 | Anti-slip device for shoe heels | |
| US3343283A (en) * | 1966-01-19 | 1967-09-26 | Henry William | Retractible anti-slip device for shoe heels |
| DE1261017B (en) * | 1966-05-02 | 1968-02-08 | Anton Hiebler | Shoe heel with an anti-skid device |
| CH498594A (en) * | 1968-11-15 | 1970-11-15 | Kneubuehler Edgar | Shoe heel with built-in anti-skid device |
| US3747238A (en) * | 1972-04-10 | 1973-07-24 | J Jankauskas | Studded footwear |
| FR2567004B1 (en) * | 1984-07-06 | 1987-01-02 | Jarry Albert | RETRACTABLE SPOON FOR SHOES. |
| US5870838A (en) * | 1997-08-04 | 1999-02-16 | Khayat; Renee. | Retractable spike system for a footwear sole |
| US5956870A (en) * | 1997-11-03 | 1999-09-28 | Grossman; Gerald | Shoes with retractable spikes and method for use thereof |
-
1999
- 1999-05-07 EP EP99830275A patent/EP1050225B1/en not_active Expired - Lifetime
- 1999-05-07 AT AT99830275T patent/ATE223165T1/en not_active IP Right Cessation
-
2000
- 2000-11-01 US US09/703,800 patent/US6449880B1/en not_active Expired - Fee Related
- 2000-11-06 CA CA002325118A patent/CA2325118C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE223165T1 (en) | 2002-09-15 |
| EP1050225B1 (en) | 2002-09-04 |
| EP1050225A1 (en) | 2000-11-08 |
| CA2325118A1 (en) | 2002-05-06 |
| US6449880B1 (en) | 2002-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |