Core wire for drive belt, drive belt, and method for manufacturing core wire and drive belt

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United States of America Patent

PATENT NO 12123475
APP PUB NO 20230037131A1
SERIAL NO

17758312

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Abstract

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A core wire for a power-transmission belt includes a plied twisted cord formed by putting together and secondary twisting a plurality of primary twisted yarns. The primary twisted yarns include a plurality of hard primary twisted yarns (A) and one soft primary twisted yarn (B). The hard primary twisted yarns (A) include an aramid fiber, and a fineness of each hard primary twisted yarn (A) is 1500 dtex or less. The soft primary twisted yarn (B) includes a low elastic modulus fiber. A ratio (B/A) of a primary twist coefficient of the soft primary twisted yarn (B) to an average value of primary twist coefficients of the hard primary twisted yarns (A) is 0.5 to 1.2.

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Patent Owner(s)

Patent OwnerAddress
MITSUBOSHI BELTING LTDNO 1-21 4-CHOME HAMAZOE-DORI NAGATA-KU KOBE HYOGO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirakawa, Yasushi Hyogo, JP 38 567
Tomoda, Takuya Hyogo, JP 17 105

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