Method and apparatus for making a blow molded fuel tank

Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – With means to sever product

Reexamination Certificate

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Details

C425S535000

Reexamination Certificate

active

07097445

ABSTRACT:
A fuel tank is formed by a blow molding apparatus and method wherein a blow pin provides pressurized gas into an interior of a parison received in a blow mold so the parison may be blown to shape within the mold cavity. When the blow pin is no longer needed, it is retracted from the mold and a pinch plate assembly is used to close off the opening in the molded part created by the blow pin. Thereafter, the mold may be opened and the molded part removed, the pinch plate assembly and moved back to its retracted position, and the blow mold pin may be advanced into the open mold for use with a subsequent parison so that the subsequent parison can be blow molded in the same manner.

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patent: 2000052413 (2000-02-01), None

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