Methods of casting pneumatic tires

Details Methods of casting pneumatic tires Methods of casting pneumatic tires

1976-08-04

1978-02-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264326, B29C 112

Patent

active

040752755

ABSTRACT:
A method 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 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: 1389439 (1921-08-01), De Mattia
patent: 1389440 (1921-08-01), De Mattia
patent: 1389441 (1921-08-01), De Mattia
patent: 3123122 (1964-03-01), Beckadolph

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