Power transmission belt and belt transmission system including the power transmission belt
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United States of America Patent
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Sep 19, 2017
Issued Date -
N/A
app pub date -
Oct 26, 2016
filing date -
Jun 20, 2014
priority date (Note) -
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Abstract
A power transmission belt has a cord embedded in a belt body made of rubber. The cord is configured as a plied yarn with a total fiber fineness of 4000 to 5000 dtex. The plied yarn consists of four primarily-twisted yarns, each being obtained by subjecting a bundle of para-aramid fibers with a fiber fineness of 1000 to 1250 dtex to a primary twist in one direction at a twist coefficient of 1200 to 1350, and these four primarily-twisted yarns are then secondarily twisted in the opposite direction to the primary twist at a twist coefficient of 900 to 1100, thereby obtaining the plied yarn.
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