Heavy duty pneumatic tire

Details Heavy duty pneumatic tire Heavy duty pneumatic tire

1982-05-04

1984-05-22

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1112

Patent

active

044495609

ABSTRACT:
A heavy duty pneumatic tire includes a tread surface divided along circumferential directions by at least two zigzag tread grooves to form a plurality of circumferential zigzag ribs whose at least one side edge is formed with a plurality of narrow cuts opening into the tread grooves and substantially in parallel with an axial direction of the tire. According to the invention, lengths and/or depths of the narrow cuts are gradually reduced from the cuts in the extending corners to the cuts in the retracting corners of the ribs, or the narrow cuts are inclined relative to radial surfaces of the tire passing through openings of the cuts to make angles with their radial surfaces, the angles being progressively larger as the cuts are nearer the extending corners to mitigate railway wear of the tire without sacrificing other wear-resistant properties.

REFERENCES:
patent: 3550665 (1970-12-01), Verdier
patent: 4271885 (1981-06-01), Takigawa et al.
patent: 4271886 (1981-06-01), Bachmann et al.
patent: 4305445 (1981-12-01), Yoshioka

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