Pneumatic tires with cable bead core
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Mar 6, 2000
filing date -
Mar 5, 1999
priority date (Note) -
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Abstract
A pneumatic tire comprises a bead core formed by laminating three or more sheath layers of spirally twisted sheath filaments around a thick core wire and making reverse the twisting direction of the sheath filament in these sheath layers every the sheath layer, in which the number of twisting pitches in the sheath filament of a second sheath layer viewed from the outermost side is made smaller than that in sheath filament of a sheath layer located inward from the second sheath layer.
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