拡大された荷重保持能力を有する空気入りタイヤ

Japanese Patent JP4733293

B2

A pneumatic tire (240, 240',650) with an increased load carrying capacity (extended load index) but compatible with conventional, commercially available wheel rims, has a modified carcass ply line. The tire has a tread area (212,612), a carcass structure (228,228',228",628) including two bead areas (220a,220b,220a',220b',220b",620a,620b) each comprising a bead (224a,224b,424a,424b,624a,624b), at least one cord-reinforced elastomeric ply (230,230',230",430,630) extends between the two bead areas, and two sidewalls (226a,226b,626a,626b) extending between the tread area and each bead area. The tire has a section width (SW) defined by lines L1 and L2 disposed orthogonally to the axis of rotation AR and at a distance of A/2 from the equatorial plane EP of the tire, lines M1 and M2 each parallel to lines L1 and L2, respectively, and axially inwards toward the equatorial plane EP and spaced a distance d1, d2, respectively, of 1 mm to 5 mm from lines L1 and L2, points P1,P2 on lines M1 and M2, respectively, located at the minimum radial distance of dp1, dp2, respectively, from the at least one elastomeric ply to an axis of revolution AR of the tire, the elastomeric ply having a plyline PL including points P1 and P2, the plyline PL extending radially outward from points P1 and P2 a radial distance rl, r2, respectively, to the crown portion CP of the tire without axially deviating from lines M1,M2 by more than a distance d3,d4 of 0 mm to 5 mm. R1,r2 are defined as having a value that exceeds the distance dp1,dp2 by a value of 30% to 70% of the section height SH.

Laurent Corrantnio
Frank fill pot
Gear Phone Newen
Alain Emile Francois Roosegen

JP2001178349A

July 27, 2011

June 13, 2001

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THE GOODYEAR TIRE & RUBBER COMPANY

B60C9/08; B60C3/04; B60C13/00; B60C15/00; B60C17/00

JP63159113A

DE2127588A1

Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Katsuhiro Ito

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