Heavy duty pneumatic tires

Details Heavy duty pneumatic tires Heavy duty pneumatic tires

1989-12-06

1991-09-17

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152DIG3, B60C 1112

Patent

active

050485830

ABSTRACT:
A heavy duty pneumatic tire comprises a tread portion having a pitch pattern and provided with at least two circumferential main grooves extending circumferentially of the tire, wherein at least one dimple is arranged in a region of an island part ranging from a side end of the tread to a position corresponding to not more than 20% of a tread width per one pitch, and a pair of sipes are disposed at opposed positions of each dimple to a widthwise direction of the tire so as to extend in the widthwise direction of the tire. This dimple has a particular ratio of opening size in widthwise direction to opening size in circumferential direction, a size of not more than 8 mm, a particular depth, and a particular total opening area ratio per one pitch.

REFERENCES:
patent: 3749145 (1973-07-01), Hart et al.
patent: 4266592 (1981-05-01), Takigawa et al.
patent: 4723584 (1988-02-01), Yamaguchi et al.

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