Tread for pneumatic tire intended for winter driving

Details Tread for pneumatic tire intended for winter driving Tread for pneumatic tire intended for winter driving

1989-12-12

1991-02-19

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152DIG3, B60C 1112

Patent

active

049941267

ABSTRACT:
Certain elements in relief (11, 13) of a tread (1) for a radial tire are vided at least with incisions (41, 42, 43) which in cross-section have a fork-shaped outline with at least two branches (41B, 41C) forming an extension of a single part (41A), the number of incisions (41) in the element in relief (11, 13) being multiplied by a factor equal to at least 1.5 starting from the depth (h.sub.1) of the double-branched incision (41). Use of such treads for tires intended to travel on wet, snow-covered or icy ground.

REFERENCES:
patent: 2264767 (1941-12-01), Ofensend
patent: 2538491 (1951-01-01), Winston
patent: 3095024 (1963-06-01), Robertson
patent: 3727661 (1973-04-01), Hoke
patent: 3971424 (1976-07-01), Boileau
patent: 4298046 (1981-11-01), Herbelleau et al.
patent: 4345632 (1982-08-01), Takigawa
patent: 4794965 (1989-01-01), Lagnier

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