PNEUMATIC TIRE
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United States of America Patent
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Issued Date -
Sep 20, 2012
app pub date -
Feb 24, 2012
filing date -
Mar 18, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A reinforcing belt 10 in a belt layer which goes around in a circumferential direction of a pneumatic tire according to the present invention comprises plural steel cords arranged in parallel over overall length thereof, covered with a rubber, the steel cord of the reinforcing belt is arranged such that an angle θ1 between the steel cord and a tire circumferential direction satisfies 0.9πR≦W/tan θ≦1.1πR when a reinforcing belt width is W and a reinforcing belt diameter is R, the reinforcing belt in its developed state shows a parallelogram comprising circumferential direction sides 11 and 12 having the same length, parallel to a tire circumferential direction, and inclined sides 13 and 14 connecting edges of the circumferential direction sides, and the steel cord is arranged in parallel to the inclined sides.
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