Apparatuses for casting pneumatic tires

Details Apparatuses for casting pneumatic tires Apparatuses for casting pneumatic tires

1975-04-15

1976-11-30

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425 55, 249184, B29C 500, B29F 100, B29H 1700

Patent

active

039946509

ABSTRACT:
A method of and apparatus for casting pneumatic tires by pouring a fluidized tire-forming material into a molding cavity defined between the outer peripheral surface of a separable hard core of a mold assembly and the inner peripheral surface of an outer separable hard mold member of the mold assembly. The separable hard core is composed of at least three segments and toroidal in shape. At least one segment of the separable core guidingly is retracted in a radial direction and then moved in a direction which does not hinder retractive movement of the remaining segments and subsequently these remaining segments are retracted in the radial direction, whereby the cast tire can easily be removed from the mold assembly.

REFERENCES:
patent: 1140499 (1915-05-01), Chalfant et al.
patent: 1194968 (1916-08-01), De Mattia
patent: 3123122 (1964-03-01), Beckadolph
patent: 3459849 (1969-08-01), De Ronde
patent: 3645655 (1972-02-01), Beneze

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