Pneumatic tire and method of making the same

Details Pneumatic tire and method of making the same Pneumatic tire and method of making the same

1996-02-09

1998-06-23

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

1561101, 1561307, 264326, 425 47, B60C 1101

Patent

active

057699763

ABSTRACT:
A pneumatic tire and a method of making the same are disclosed, wherein the tire is made by vulcanizing a green tire in a split mold. The mold has circumferentially extending split lines at a position corresponding to the tire buttress region. The inner surface of the mold is provided with protrusions immediately radially outside the split lines and ribs immediately radially inside the split lines, so that the vulcanized tire is provided with depressions and grooves corresponding to the protrusions and ribs, respectively. Therefore, the raw tire rubber does not get between the split faces of the mold, and the occurrence of burrs along the mold-split lines can be completely prevented.

REFERENCES:
patent: 1542797 (1925-06-01), Midgley
patent: 2874745 (1959-02-01), Wann
patent: 2972368 (1961-02-01), Williams
patent: 3854853 (1974-12-01), Mirtain
patent: 3989791 (1976-11-01), Tippin
patent: 4152186 (1979-05-01), Shibata
patent: 4214618 (1980-07-01), Takigawa et al.
patent: 4655699 (1987-04-01), Collier
patent: 5571351 (1996-11-01), Hatakenaka et al.

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