Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1986-03-11
1988-08-09
Ball, Michael
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152536, 152537, 152538, 152541, 152543, 152546, 152555, 152560, B60C 300, B60C 902, B60C 1506
Patent
active
047621583
ABSTRACT:
A heavy duty pneumatic radial tire includes a carcass consisting of at least one layer of metal cords substantially radially arranged, a breaker consisting of at least two layers of metal cords to form a main reinforcement with the carcass, and bead portions including hard and soft stiffeners. The carcass has a particular radial profile having a ratio of radii R/R' determined by a radius R' of a standard circle and a radius R determined by a particular definition and has a maximum distance f between an arc of the standard circle and the remaining carcass line smoothly extending from the profile curvature of the shoulder. Moreover a radial profile over a radially inner zone of the sidewall of 20-45% of the radial height SH has a curvature 1/.rho. less than 6.times.10.sup.-3 mm.sup.-1 at a location 32.5% of the radial height corresponding to a center of the profile.
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Furuya Shin-ichi
Kadota Kuninobu
Kato Kenshiro
Togashi Minoru
Ball Michael
Bridgestone Corporation
Knable Geoffrey
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