Endless belt with improved load carrying cord

Abstract

A power transmission belt having a load carrier cord embedded therein, said cord comprising a plurality of yarns and possessing a first twist corresponding to a first twist multiplier and a first twist direction, and possessing a second twist corresponding to a second twist multiplier in a direction opposite said first twist direction, and characterized in that the ratio of said first twist multiplier to said second twist multiplier is greater than about 1.5. The belt may be a multi-v-ribbed belt comprising a belt body portion, a sheave contact portion and a load carrying cord embedded in said belt body portion, said load carrying cord comprising a plurality of twisted yarns, and having a first (yarn) twist corresponding to a first twist multiplier and a second (cord) twist in a direction opposite said first twist and corresponding to a second twist multiplier; wherein said first twist multiplier is greater than said second twist multiplier as indicated by a ratio of at least 1.5:1.

Dependencies are inferred from the claim text.