Heavy duty pneumatic tires

Details Heavy duty pneumatic tires Heavy duty pneumatic tires

1995-09-28

1998-03-10

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152209D, B60C11500

Patent

active

057257000

ABSTRACT:
A heavy duty pneumatic tire possessing excellent wet-running performances and wear resistance comprises a tread portion provided at its surface with a plurality of main grooves arranged on both sides with respect to an equatorial plane at a given interval in a circumferential direction of the tire and has a negative ratio of not more than 0.3. In this tire, the main grooves curvedly extend in a converging direction from each side end of the tread toward the equatorial plane and terminate on the equatorial plane or in the vicinity thereof within 25% of a tread width (W) centering around the equatorial plane so as to meet the terminals of opposed main grooves with each other or somewhat separate away them from each other and have particular inclination angle (.alpha.), and continuously projection lengths (L.sub.1, L.sub.2) in the widthwise and circumferential directions.

REFERENCES:
patent: D336455 (1993-06-01), Hammond et al.
patent: 4057089 (1977-11-01), Johannsen
patent: 4832099 (1989-05-01), Matsumoto
patent: 4865101 (1989-09-01), Williams
patent: 5421391 (1995-06-01), Himuro
patent: 5423364 (1995-06-01), Himuro
patent: 5435366 (1995-07-01), Voigt et al.
Patent Abstracts of Japan, JP 6055909, Jan. 3, 1994, "Tire for Motor-Bicycle".

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