Pneumatic tire with tread having continuous ribs and block rows

Details Pneumatic tire with tread having continuous ribs and block rows Pneumatic tire with tread having continuous ribs and block rows

2004-02-25

2008-10-14

Maki, Steven D (Department: 1791)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S209150, C152S209220, C152S209280

Reexamination Certificate

active

07434606

ABSTRACT:
A tread surface2is divided by inner and outer longitudinal grooves3aand3blocated on opposite sides of the tire equator into a central land portion4i, intermediate land portions4mand shoulder land portions4o. The intermediate land portion4iincludes an inclined grooves9having an angle θ with respect to the circumferential direction of the tire, and the angle is increased from an inner end (mi) away from the inner longitudinal grooves3aby a small distance La to an outer end (mo) where the intermediate land portion intersects with the outer longitudinal grooves3b. An angle θi in the inner end (mi) is 0 to 25°, and an angle θo in the outer end (mo) is 60 to 80°. A pitch P1of the inclined grooves9in the circumferential direction is greater than a pitch P2of lug grooves5provided in the shoulder land portion4oin the circumferential direction.

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Machine translation for Japan 11-334317, Jun. 23, 2008.
European Search Report, completed Dec. 13, 2007.
Patent Abstracts of Japan, Publication No. 11334317 dated Dec. 7, 1999.
Patent Abstracts of Japan, Publication No. 2003011616 dated Jan. 15, 2003.

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