Lid closer for injection mold

Plastic and nonmetallic article shaping or treating: processes – Combined

Reexamination Certificate

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C264S334000, C425S441000, C425S556000

Reexamination Certificate

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08083978

ABSTRACT:
Injection molded parts having bodies and lids connected by living hinges have the lids closed against the bodies during an opening sequence of mold plates. The lid closing mechanism is arranged in an intermediate plate disposed between a movable B plate and a fixed A plate. Movable and fixed cavities can meet within the intervening plate where a lid closer accomplishes lid closing as mold plates separate during mold opening. Accomplishing the lid closure during a mold opening sequence avoids any increase in the mold cycle time.

REFERENCES:
patent: 4040595 (1977-08-01), Tecco
patent: 4340352 (1982-07-01), Hayberg
patent: 4818208 (1989-04-01), Byrne
patent: 5037597 (1991-08-01), McGinley et al.
patent: 5709833 (1998-01-01), Simone
patent: 5906841 (1999-05-01), Bak
patent: 7168149 (2007-01-01), Kalemba et al.
patent: 7291305 (2007-11-01), Vanderploeg et al.
patent: 7427196 (2008-09-01), Kalemba et al.
patent: 7470387 (2008-12-01), Chiu
patent: 2008/0260890 (2008-10-01), Di Simone

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