Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1988-06-01
1989-12-05
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
B60C 1104
Patent
active
048846074
ABSTRACT:
The specification discloses a pneumatic tire provided, on the tread surface thereof, with a plurality of main grooves extending towards the circumferential direction of the tire, a plurality of ribs defined by said main grooves, and a plurality of subgrooves provided on said ribs and traverse to the circumferential direction of the tire, wherein the groove angle of said subgrooves provided on said ribs on the shoulder side of the tire is smaller than that of said subgrooves provided on the ribs on the tread center side of the tire and the cross-sectional area of said subgrooves on said ribs on the shoulders is larger than that of said subgrooves provided on the ribs on the tread center side of the tire. This tire exhibits improved wet performances in, particularly, draining property and preventing hydroplaning while substantially maintaining the performances of the tire such as driving stability, durability, riding comfort, and abrasion resistance.
REFERENCES:
patent: 3584670 (1971-06-01), Verdier
patent: 3674077 (1972-07-01), Verdier
patent: 4057089 (1977-11-01), Johannsen
patent: 4284115 (1981-08-01), Ohnishi
patent: 4299264 (1981-11-01), Williams
Ball Michael W.
Knable Geoffrey L.
The Yokohama Rubber Co. Ltd.
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