Blow-out vent valve

Details Blow-out vent valve Blow-out vent valve

1994-02-14

1996-01-16

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including means to prepare parison

264161, 26432812, 264334, 264572, 425215, 425444, 425546, 425554, 425556, 425806, B29C 4526, B29C 4540

Patent

active

054842786

ABSTRACT:
A vent valve for a gas assisted injection molding machine has a valve member to control flow from the mold cavity. A shear co-operates with an anvil in the passageway between the mold and valve member to sever material in the passageway as the molded article is ejected.

REFERENCES:
patent: 3672807 (1972-06-01), Genz
patent: 3936261 (1976-02-01), Jones et al.
patent: 4647275 (1987-03-01), Lundquist
patent: 5078949 (1992-01-01), Strunk et al.
patent: 5090886 (1992-02-01), Jaroschek
patent: 5254306 (1993-10-01), Inada et al.
patent: 5284429 (1994-02-01), Schneider et al.

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