Patent ID: 6826854
Filing Date: 2004-12-07
Classification: A43C

Abstract:
A friction device for footwear comprisinga friction body comprising a friction part, which is used in a state of being held on a sole of footwear to contact an object to be stepped on by the sole of footwear and generate frictional forces between itself and the object, a fit-in protrusion, which fits in and is detachably held by a holder provided on the sole of footwear, said fit-in protrusion being provided, in a condition being held on the sole of footwear, on the rear part of said friction part corresponding to the face of the sole of footwear and/or the surface part of the holder, and an annular rib or an annular groove, and an annular packing part, on said rear part of the friction part, on the outer circumference side of said fit-in protrusion, said annular rib or annular groove being on the outer circumference side of the annular packing part, and an annular groove or an annular rib corresponding to said annular rib or annular groove, and an annular packing part corresponding to said annular packing part, on the face of the sole of footwear and/or the surface part of the holder, wherein the sectional configuration of each annular rib and that of the corresponding annular groove is arranged in such a way that when the fit-in protrusion is fitted in and held by the holder and the friction body is held on the sole of footware, the rib and the groove can fit with each other almost without any gap between them or at least the base of the annular rib can contact the edge of the opening of the annular groove, and one or both of said both annular packing parts is made of an elastic material, and when the fit-in protrusion is fitted in and held by the holder and the friction body is held on the sole of the footwear, said annular rib fits in said annular groove, and said both annular packing parts tightly and elastically contact and press each other over the entire circumference.