Process and mold for shaping tire tread with blades to prevent u

Details Process and mold for shaping tire tread with blades to prevent u Process and mold for shaping tire tread with blades to prevent u

1980-07-28

1981-12-01

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

156128R, 425 46, B60C 1112, B29H 1702

Patent

active

043031153

ABSTRACT:
In order to prevent the edges of the crown reinforcement of radial carcass tires whose tread contains oblong elements in relief or blocks (tires for earth-moving vehicles and for drive wheels of agricultural tractors) from deforming during the vulcanization of these tires in the vulcanization mold, at least some of these oblong blocks are provided with a furrow whose depth is between 1/2 and 6/5 of the radial height of the oblong block in question and whose length is not greater than 1/3 of the length of the oblong block. The element in relief which, within the mold, serves to mold the furrow within the oblong block of the tread prevents the folding and/or deformation of the crown reinforcement of the tire.

REFERENCES:
patent: D190985 (1961-07-01), Blankenship et al.
patent: 3199567 (1965-08-01), Kunz et al.
patent: 3974018 (1976-08-01), Arimura et al.
patent: 4088523 (1978-05-01), Gallizia et al.
patent: 4222424 (1980-09-01), Tsuzura et al.

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