Boots – shoes – and leggings – Boots and shoes – Occupational or athletic shoe
Reexamination Certificate
2000-09-08
2003-02-04
Stashick, Anthony D. (Department: 3728)
Boots, shoes, and leggings
Boots and shoes
Occupational or athletic shoe
C036S062000, C036S064000, C036S06700D
Reexamination Certificate
active
06513266
ABSTRACT:
TECHNICAL FIELD
The present invention relates to an antislip device for footwear such as golf shoes, particularly an antislip device for footwear that is easy to mount and dismount and that can be reliably attached and detached.
BACKGROUND ART
Concerning antislip devices for golf shoes, spikes made of metal or ceramic have heretofore been used, but antislip devices made of synthetic resin have come into wide use for prevention of damage to greens and the like and for improved wearing feel. Such antislip devices made of synthetic resin are likely to wear easily as compared with those made of metal, so that an externally threaded raised portion made of metal or synthetic resin is formed on the back of the antislip device, while an internally threaded portion made of metal adapted to be threadedly fitted thereto is formed on the sole of a golf shoe, thereby making the antislip device removably mountable and exchangeable.
In the mounting and dismounting of the conventional antislip devices, however, in either of the attachment and detachment cases, a mounting/dismounting tool for turning the antislip device has to be used to turn it by as much amount as required; thus the operation of reliably threadedly mounting and dismounting all of the many antislip devices for a pair of golf shoes is troublesome. Furthermore, in the case where the externally and internally threaded portions, respectively, are made of metal, long-term use results in rusting to make the screws unturnable to the extent that removal of the screws is impossible or difficult, forcible removal tending to cause personal injury or damage or the like to the antislip mechanism. Further, in the case where the externally threaded portion is made of synthetic resin, improper tightening of the threaded portions could cause damage to the threads of the male screw or the stem of the male screw, resulting in the antislip device not being fully threadedly fixed and allowing it to come off during use. Further, if both of the internally and externally threaded portions, respectively, are made of synthetic resin, the threaded portions are likely to loosen and improper tightening damages one or both of their threads to the extent that the antislip device is likely not to be fully fixed; thus, such arrangement is impossible.
The present invention, which has been accomplished in view of the above problems inherent in the prior art, is to provide an antislip device for footwear that can be easily mounted and dismounted and reliably attached and detached.
DISCLOSURE OF THE INVENTION
(1) An antislip device for footwear according to the present invention is;
an antislip device for footwear, comprising a holder used by being fixed to the bottom of footwear, and an antislip body to be held in said holder, said antislip body having an antislip portion that, when the antislip body is held in the holder fixed to the bottom of the footwear, contacts a surface to be trod by the bottom of the footwear so as to prevent the footwear from slipping relative to said surface,
said holder and said antislip body have a holder-associated fitting portion and an antislip body-associated fitting portion, respectively, that fit together,
said holder-associated fitting portion and said antislip body-associated fitting portion have a transverse support mechanism capable of preventing a relative movement between them in a direction orthogonal to the direction of fit when said antislip body-associated fitting portion fits in said holder-associated fitting portion,
of such things as a slip-off preventive recess and a slip-off preventive projection capable of fitting in said slip-off preventive recess when the holder-associated fitting portion and the antislip body-associated fitting portion are fitted together, one is possessed by the holder and the other by the antislip body,
either said slip-off preventive recess constituting portion or said slip-off preventive projection is urged in a direction in which it can be fitted to the other, said slip-off preventive recess and said slip-off preventive projection being shaped such that when they are relatively moved in a direction in which they are fitted together, they can be fitted together and when they are relatively moved in the opposite direction, their fitting is not canceled,
one or more insert receiving portions being provided in which fit-canceling inserts can be inserted when the antislip body is in the state of being held in the holder fixed to the bottom of the footwear, said urged slip-off preventive recess constituting portion or slip-off preventive projection canceling the fit between the two by a force opposite in direction to said urging force that it receives from the inserts directly or through some other portion when the fit-canceling inserts are sufficiently inserted in the insert receiving portions.
The holder may be suitably formed of synthetic resin, metal, ceramic material, or a combination thereof. The holder is used by being fixed to the bottom of footwear. For example, it may be used by being embedded in and fixed to a synthetic resin footwear bottom (for example, a shoe sole, particularly a sport shoe sole, such as a golf shoe sole). Besides this, it may be formed by integral molding in such a footwear bottom, or may be formed by integral molding in the base portion of a footwear bottom, so that it is used in the state of being exposed to the bottom surface of the footwear bottom.
The antislip portion may be suitably made of synthetic resin, metal, ceramic material, or a combination thereof. Concerning the configuration of to the antislip portion, examples thereof are a group of small projections, a group of ridges, a linearly radially disposed ridge, a spirally radially disposed ridge, for example, a substantially circular plate-like body, which projects to the bottom surface side of the footwear bottom when the antislip body is held in the holder fixed to the footwear bottom.
Concerning the synthetic resin used for the holder and the antislip body, for example, nylon resin (for example, 66 nylon resin), urethane resin may be employed.
Either the holder-associated fitting portion or the antislip body-associated fitting portion may be a fitting projection and the other a fitting recess. For example, the antislip body may comprise a plate-like antislip portion having an antislip projection on the front and a pillar-like antislip body-associated fitting portion (fitting projection) erected on the back of the antislip portion, while the holder may comprise a hole-like holder-associated fitting portion (fitting recess) in which said antislip body-associated fitting portion fits. Further, for example, the holder may have a pillar-like holder-associated fitting portion (fitting projection) erected thereon, while the antislip body may have an antislip body-associated fitting portion (fitting recess) in which said holder-associated fitting portion fits in.
The transverse support mechanism may be constituted, for example, such that one of the outer and inner peripheral portions that support each other in a direction orthogonal to the direction of fit upon fitting between the holder-associated fitting portion and the antislip body-associated fitting portion is provided in the holder-associated fitting portion at two or more places or continuously in the direction of fit, and the other in the antislip body-associated fitting portion. Examples of such combinations of the outer and inner peripheral portions are a cylindrical inner peripheral surface and a cylindrical outer peripheral surface; an inner peripheral surface and an outer peripheral surface that are polygonal in cross section (for example, regular polygonal in cross section); an inner peripheral surface and an outer peripheral surface that are elliptic in cross section. (In each case, there may be one or more discontinuous portions disposed peripherally or in the direction of fit. For example, if the cylindrical inner peripheral surface or cylindrical outer peripheral surface is peripherally discontinuous, this results in one or more arcuat
McGlew and Tuttle , P.C.
Stashick Anthony D.
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