Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1998-05-15
2000-07-04
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
15220915, 152454, 152901, B60C 300, B60C 1104
Patent
active
060824247
ABSTRACT:
A heavy duty radial tire which comprises a radial carcass ply, a belt comprising at least two plies of cords laid at angles of 10 to 40 degrees to the tire circumferential direction, and a tread portion provided with circumferentially extending two shoulder grooves which divide the tread into a central region and a pair of shoulder regions, the tread profile being a convex curve in the central region but a concave curve in each of the shoulder regions, the concave curve passing radially inwards of a standard line at lest partially, and the standard line defined as a circular arc passing three points on the tread profile in the central region at the tire equator, the axially inner edge of the main groove and the middle thereof. Preferably, the distances To, Tt and Tm measured normally to and radially outwardly from the standard line to the tread profile at the axially outer edge of the main groove, the tread edge and the deepest point therebetween, respectively, satisfy Tt>To>Tm. Further, Tt>=0, To<=0, and Tm<0.
REFERENCES:
patent: 5616195 (1997-04-01), Marquet et al.
patent: 5660652 (1997-08-01), Young et al.
Patent Abstracts of Japan vol. 011, No. 250 (M-616), Aug. 14, 1987 & JP 62 059106 A (Bridgestone Corp), Mar. 14, 1987 *abstract*.
Maki Steven D.
Sumitomo Rubber Industries Ltd.
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