Apparatus for preparing a hollow plastic article

Details Apparatus for preparing a hollow plastic article Apparatus for preparing a hollow plastic article

1992-08-24

1993-08-24

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

4254516, 425541, 425812, B29C 4962

Patent

active

052383890

ABSTRACT:
The present invention discloses a blow mold for forming a hollow plastic article from a parison including at least two relatively reciprocable mold portions which form a mold cavity therebetween having a shape of the desired hollow plastic article, and a toggle mechanism for relatively moving the mold portions from a first open position to a second position wherein the mold portions are in contacting relationship to a third position wherein the mold portions are spaced apart to form a controlled vent therebetween.

REFERENCES:
patent: 3078508 (1963-02-01), Martin, Jr.
patent: 4120636 (1978-10-01), Appel et al.
patent: 4140468 (1979-02-01), Duga
patent: 4350443 (1982-11-01), Michaels
patent: 4421472 (1983-12-01), Martin, Jr.
patent: 4648831 (1987-03-01), Johnson
patent: 4690633 (1987-09-01), Schad et al.

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