Tire manufacture

Details Tire manufacture Tire manufacture

1977-07-07

1979-02-20

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425542, 425127, 425573, 425577, 249110, B29G 300, B29H 502, B29H 1700

Patent

active

041404521

ABSTRACT:
In molding the tread portion of a pneumatic tire to have a breaker structure incorporated therein the breaker is built in an annular mold cavity to have a radially outermost 90.degree. ply consisting of parallel cords extending axially of the cavity, and uncured rubber is introduced into the cavity through an annular gate surrounding the cavity so as to spread axially of the cavity. As the introduced uncured rubber does not move circumferentially of the cavity it has no tendency to displace the breaker cords.

REFERENCES:
patent: 2724425 (1955-11-01), Ostling
patent: 2744290 (1956-05-01), Corson
patent: 2799435 (1957-07-01), Ablanalp
patent: 2873790 (1959-02-01), Cadwell et al.
patent: 3457594 (1969-07-01), Baudon
patent: 3486198 (1969-12-01), Lewis
patent: 3709457 (1973-01-01), Church
patent: 3934968 (1976-01-01), Cicognani

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