Pneumatic tire for heavy duty including narrow block

Details Pneumatic tire for heavy duty including narrow block Pneumatic tire for heavy duty including narrow block

1997-10-27

1999-04-06

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1103, B60C10700

Patent

active

058912762

ABSTRACT:
A heavy duty pneumatic tire comprising a plurality of block rows provided on a tread surface, each block row being composed of a plurality of blocks formed by a plurality of main grooves extending in a tire circumferential direction and a plurality of lateral grooves intersecting said main grooves, wherein a narrow block is provided, interposing a sub groove, in a position outside each block of block rows adjacent to an inner side of an outermost main groove in a tire width direction; and wherein a surface of said narrow block is formed to be circular-arc by setting a height of a center part of said narrow block surface in the tire circumferential direction to be equal to that of said tread surface and a height of both end parts of said narrow block surface to be lower than that of said tread surface by 1.5 to 2.5 mm.

REFERENCES:
patent: 4722378 (1988-02-01), Carolla et al.
patent: 5323825 (1994-06-01), Yamagishi et al.
patent: 5361815 (1994-11-01), Loser et al.
patent: 5571351 (1996-11-01), Hatakenaka et al.
patent: 5580404 (1996-12-01), Hitzky
patent: 5690761 (1997-11-01), Masaoka

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