Pneumatic radial tire for passenger car with defined tread depth

Details Pneumatic radial tire for passenger car with defined tread depth Pneumatic radial tire for passenger car with defined tread depth

1992-06-17

1994-09-06

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152527, 152537, B60C 1104, B60C 918

Patent

active

053439171

ABSTRACT:
A pneumatic radial tire for a passenger car, which includes a plurality of grooves provided on the surface of a tread and extending at least in a tire circumferential direction and a belt layer having a double layer structure and provided within the tread, characterized in that the total sectional area, .alpha., of steel wires per 50 mm width of the belt layer is in a range satisfying 5.ltoreq..alpha..ltoreq.9 mm.sup.2, the depth, d, of the grooves is in a range satisfying 6.0.ltoreq.d.ltoreq.8.0 mm, and the thickness, t, of rubber under the grooves defined as the distance from the bottom of the groove to the outermost belt layer is in a range satisfying 1.0.ltoreq.t.ltoreq.2.5 mm.

REFERENCES:
patent: 4718470 (1988-01-01), Kusakabe et al.
patent: 4819705 (1989-04-01), Caretta
patent: 4884607 (1989-12-01), Mori
patent: 4986324 (1991-01-01), Suzuki et al.
patent: 5000239 (1991-03-01), Brayer et al.
patent: 5135038 (1992-08-01), Grass et al.
"Pneumatic Tyre Design", E. C. Woods, 1955, pp. 32-34.
1992 YearBook, The Tire and Rim Association, Inc. with pp. 1-01, 1-06, 1-08, 1-10, 1-12.
Excerpt from commercial brochure entitled "Organic Rubber Chemicals" dated Jul. 1, 1989, of Ouchi Shinko Chemical Industrial Co., Ltd.
Excerpt from Japanese commercial brochure entitled "Yuki Gomu Yakuhin Ichiranhyo" (Listing of Organic Chemicals) dated Jul. 1, 1989, of Ouchi Shinko Chemical Industrial Co., Ltd.
Copies of "Material Standards" issued by The Yokohama Rubber Co., Ltd., dated Jul. 1987 and Jun. 1992.

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