Pressurization of tire mold vents

Details Pressurization of tire mold vents Pressurization of tire mold vents

1987-12-14

1989-03-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing toroidal work

264315, 264335, 425 281, 425 46, 425437, 425812, B29C 3502, B28B 712, B28B 1700

Patent

active

048122815

ABSTRACT:
Tire mold vents (34) in communication with a sealed cavity (35) are pressurized for limiting the quantity of rubber entering the vents (34) and for assisting the stripping of the vulcanized tire (28) from the mold. Passages (40) in the mold communicate fluid pressure to the vents (34) and pressure regulators (58,60) control the fluid pressure communicated to the vents (34) during vulcanization and during ejection of the tire (28) from the mold (10).

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patent: 4531902 (1985-07-01), Stuhldreber et al.
patent: 4662833 (1987-05-01), Carter

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