Patent ID: 7743472

Claim:
A boot-band which is adapted to be wound around an outer periphery of a boot in a ring-shaped condition so that a first end portion overlaps a second end portion and so that a belt-shaped member is formed, said boot-band comprising: a plurality of engagement holes formed in the first end and a plurality of engagement prominences which are formed on an overlapped portion of the second end and which are arranged to each engage in a connection hole, a smaller-cross-sectional area portion proximate an end of the first end portion, which elongates in response to a clamping force applied in a direction to shorten a circumferential length of said belt-shaped member, wherein: said smaller-cross-sectional area portion includes a hole which is different from the engagement holes, which is so configured and arranged as to remain prominence free, which is elongate and which provides elongation in response to the application of the clamping force, the boot-band further comprising: a general part, the cross-sectional area of which is not decreased, the general part being formed in a part of the first end portion and spaced from the smaller-cross-sectional area portion, and wherein both said smaller-cross-sectional area portion and said general part are configured to elongate in response to the clamping force being applied, and wherein said belt-shaped member is such that: a tension that arises due to a boot-reaction force that (a) is caused by the clamping force and (b) acts on the smaller-cross-sectional area portion, is equal to or greater than a yield-point load of the general part; and a cross-sectional area of the smaller-cross-sectional area portion multiplied by a breaking strength of the smaller-cross-sectional area portion, is equal to or greater than the cross-sectional area of the general part multiplied by a yield-point strength of the general part.