Apparatus for making improved tire curing bladders

Details Apparatus for making improved tire curing bladders Apparatus for making improved tire curing bladders

1983-11-14

1985-07-30

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

Opposed, registering, coacting mold cavities

425412, 425812, 425437, 425438, 425393, 249142, 249149, B29C 100

Patent

active

045319022

ABSTRACT:
The quality and useful life of curing bladders used in standard "Bag-O-Matic" tire vulcanizing presses is greatly improved by replacing the standard split two-piece core of the bladder mold with a unitary core which forms a disc-like rubber diaphragm below the core and integral with the rubber curing bladder at the periphery of the core. A unique base plate fits in the lower mold half below the core and has a grooved upper surface to hold the diaphragm in place so that the core can be removed manually or automatically with the assistance of internal air pressure.

REFERENCES:
patent: 2473284 (1949-06-01), Knaggs
patent: 2615203 (1952-10-01), Du Pree
patent: 2949635 (1960-08-01), Chiero
patent: 3475790 (1969-11-01), Bush et al.
patent: 3536806 (1970-10-01), Jackson
patent: 3613223 (1971-10-01), Bush
patent: 3660002 (1972-05-01), Morroni
patent: 3666229 (1972-05-01), Carrel-Billiard
patent: 3773454 (1973-11-01), Horve et al.
patent: 4257994 (1981-03-01), Leblanc et al.

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