Belt package and pneumatic tire
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Jan 20, 2005
app pub date -
May 12, 2004
filing date -
Dec 3, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A belt package including at least three belt layers for use in a pneumatic tire, wherein the filament tensile strength of the steel cord/steel filament of the outermost belt layer on the tread side is made 5% or more lower than the filament tensile strength of the steel cord/steel filament of an intermediate belt layer adjacent to the above outermost belt layer to make the ductility of one or both of the outermost belt layer and the innermost belt layer higher than the ductility of at least an intermediate belt layer adjacent to the above belt layer. Thereby, required tensile strength is secured and bending resistance and cut resistance are improved.
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