Flexible annular core used for the production of hollow toroidal

Details Flexible annular core used for the production of hollow toroidal Flexible annular core used for the production of hollow toroidal

1974-07-31

1976-01-13

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Dough divider type including trap chamber

Rotating trap chamber pickup

425 52, 249 65, 249115, B29C 100, B29C 500, B29F 100, B29H 504, B29H 518

Patent

active

039320880

ABSTRACT:
A flexible annular core for the production of hollow toroidal rubber shells, particularly pneumatic tires, composed of a pair of bead portions, each of which is composed of beads, a reinforcing layer folded back so as to enclose the beads, and elastomer layers covering the reinforcing layer, and a flexible shell portion composed of the reinforcing layer covered with the elastomer layers and extending across the bead portions. The bead portion of said flexible annular core is composed of the reinforcing layer and the elastomer layer adhered with each other. The flexible shell portion of said core is composed of the reinforcing layer and the elastomer layer not adhered with each other.

REFERENCES:
patent: 2724425 (1955-11-01), Ostling
patent: 2937406 (1960-05-01), Toddy
patent: 3396221 (1968-08-01), Balle et al.
patent: 3459849 (1969-08-01), De Ronde
patent: 3525783 (1970-08-01), Prikkel
patent: 3761047 (1973-09-01), Mao
patent: 3843292 (1974-10-01), Kitamoto et al.

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