Pneumatic tire with sipes

Details Pneumatic tire with sipes Pneumatic tire with sipes

1995-12-07

1997-10-21

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152DIG3, B60C 1112

Patent

active

056791860

ABSTRACT:
A pneumatic tire which is improved in uneven tread wear resistance without sacrificing the on-the-snow/ice running performance. The tread portion comprises a plurality of blocks, each provided with at least two sipes. Each sipe extends axially of the tire at an angle of from 90 to 88 degrees to the circumferential direction of the tire. In a cross section of the block parallel to the tire equatorial plane, each sipe extends radially inwardly from the radially outer surface of the block at an angle (.beta.) of from 2 to 10 degrees with respect to the tire radial direction so that the radially inner ends of the sipes inclining the same direction towards the rear surface of the block. The rear surface of the block inclines to the same direction as the sipes at an angle (.gamma.2) of not more than 30 degrees with respect to the tire radial direction but not less than the angles (.beta.) of the sipes. The front surface of the block inclines to the reverse direction to the rear surface.

REFERENCES:
patent: 2109691 (1938-03-01), D'Ayguesvives
patent: 4298046 (1981-11-01), Herbelleau et al.
patent: 4836257 (1989-06-01), Mamada et al.
patent: 5022448 (1991-06-01), Ochiai
patent: 5044414 (1991-09-01), Ushikubo

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