Rubber reinforcing steel cord and heavy duty pneumatic radial tire using the steel cord
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United States of America Patent
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Jun 18, 2002
Grant Date -
N/A
app pub date -
Aug 3, 2000
filing date -
Dec 25, 1998
priority date (Note) -
Expired
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Abstract
A rubber reinforcing steel cord of a bundle-twisted+layer-twisted structure obtained by arranging 9 steel filaments around 3 steel filaments each being two-dimensionally wave-like shaped in the lengthwise direction, intertwining all of these steel filaments in one operation to form a bundle-twisted cord, and further arranging 14 steel filaments around the bundle-twisted cord followed by intertwining. Also, a heavy duty pneumatic radial tire using the rubber reinforcing steel cord as the cord of the carcass layer thereof.
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