| 摘要 |
PROBLEM TO BE SOLVED: To increase the strength and durability of a joined part more than the usual thing in which the step length is entirely equalized or the length of a steel cord is arranged in a short order or long oder orderly without changing the processing and structure relating to the cost increase, in the joining part of a belt. SOLUTION: Out of one unit reinforcement cord 2 whose number of step is equal to the number of step extended from the terminal 1a of oneside belt 1, the total (ΣΔL) of the difference (ΔL) of mutually adjacent length is made toΣΔL>D×(n-1)/n, when the distance between both terminals 1a, 1a' of the belt is D and the number of step is n.
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