Pneumatic radial tire with tread having blocks provided with...

Resilient tires and wheels – Tires – resilient – Anti-skid devices

Reexamination Certificate

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C152S209220, C152S902000, C152SDIG020

Reexamination Certificate

active

07341083

ABSTRACT:
A wheel tread part2of a tread is constituted of a longitudinal main groove3formed in a circumferential direction via a center of a width direction, a plurality of longitudinal subgrooves4formed on both side parts of the longitudinal main groove3in the circumferential direction, and a plurality of traverse grooves5formed in a width direction to intersect the longitudinal main and subgrooves3, 4, and divided into a plurality of blocks6. Each of the plurality of blocks6is provided with a one-end-open sipe9, and formed so that rigidity in the width direction can be higher in an end a of a center side region compared with an end b of a shoulder side region. Since the rigidity of the end a of the center side region is higher, a reaction force is generated in accordance with a steering angle from the start of changing the same.

REFERENCES:
patent: 5287905 (1994-02-01), Caretta et al.
patent: 5591280 (1997-01-01), Asano
patent: 5814169 (1998-09-01), Yamaguchi et al.
patent: 333 397 (1989-09-01), None
patent: 62-241712 (1987-10-01), None
patent: 63-137003 (1988-06-01), None
patent: 2-200503 (1990-08-01), None
patent: 3-92403 (1991-04-01), None
patent: 9-109613 (1997-04-01), None
patent: 10-000904 (1998-01-01), None
patent: 2000-168316 (2000-06-01), None
patent: 2000-185526 (2000-07-01), None
patent: 2000-255220 (2000-09-01), None
Machine translation for Japan 2000-25520, Jul. 2006.
Derwent Abstract for Japan 2000-255220, Jul. 2006.
International Search Report, Apr. 2003.

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