Tire mold with air vent inserts

Details Tire mold with air vent inserts Tire mold with air vent inserts

1983-07-25

1984-05-08

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Reshaping, resizing or vulcanizing means for tire, tire...

425812, 249141, B29H 502

Patent

active

044471971

ABSTRACT:
A tire mold having air venting passages or holes is provided with plastic inserts or plugs for the vent holes along the cavity side of the mold. The inserts are composed of a plastic material having a heat distortion temperature of no less than 275.degree. F. at 66 psi in accordance with ASTM D648 and a coefficient of thermal expansion less than 8.times.10.sup.-5 in/in/.degree.C.

REFERENCES:
patent: 2965946 (1960-12-01), Sweet et al.
patent: 3377662 (1968-04-01), Fukushima
patent: 3804566 (1974-04-01), Kimura
patent: 3822857 (1974-07-01), Tanie
patent: 3891363 (1975-06-01), Sievers et al.

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