Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1989-05-25
1990-09-04
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152209R, D12146, B60C 1104
Patent
active
049536044
ABSTRACT:
A tread for a unidirectional pneumatic tire has first, second and third circumferentially extending zones. The edges of the zones are parallel to the equatorial plane of the tire. The width of the first zone is between 25% and 50% of the tread width, the width of the second zone is between 15% and 35%, and the width of the third zone is between 25% and 50%. The first zone has substantially aligned lateral wide groove segments extending across the width of the first zone. The segments form an angle between 70 and 90 degrees with a plane in the first zone parallel to the equatorial plane. The second zone has substantially aligned lateral wide groove segments extending across the width of the second zone. The segments form an angle between 10 and 45 degrees with a plane in the second zone parallel to the equatorial plane. The third zone has substantially aligned lateral wide groove segments extending across the width of the third zone which are generally perpendicular to the lateral wide groove segments of the second zone. The segments form an angle between 45 and 70 degrees with a plane in the third zone parallel to the equatorial plane.
REFERENCES:
patent: D223599 (1972-05-01), Busch et al.
patent: D266919 (1982-11-01), Bennett
patent: D283499 (1986-04-01), Hammond
patent: D284178 (1986-06-01), Kawabata et al.
patent: 2154290 (1939-04-01), Snyder
patent: 3674077 (1972-07-01), Verdier
patent: 4424843 (1984-01-01), Fontaine et al.
patent: 4424844 (1984-01-01), Fontaine
patent: 4456046 (1984-06-01), Miller
patent: 4470443 (1984-09-01), Eraud
patent: 4545415 (1985-10-01), Landner et al.
patent: 4574856 (1986-03-01), Braas
patent: 4722378 (1988-02-01), Carolla et al.
Ward's Auto World, Feb. 1989, p. 102.
Modern Tire Dealer, Feb. 1988, p. 46.
Gammon Nathan A.
Hopkins William M.
Koerner James E.
Schmalix Charles K.
Shepler Peter R.
Ball Michael W.
Drayer L. R.
Knable Geoffrey L.
The Goodyear Tire & Rubber Company
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