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Title: Injection molding apparatus for partitioned containers

Abstract: An injection mold is disclosed for making an article having a plurality of side walls defining an enclosure. The mold elements during opening and closing of the mold move in a coordinated manner via mechanical interlocks. A first mold section carries plural side wall members that slide between a closed position and an open position. A second mold section interlocks with the side wall members to carry them from their closed to their open position and the side wall members are themselves linked to a stripper ring that strips the article from the mold. Other features are disclosed.


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Inventors: Lovejoy, Walter R. (Elmhurst, IL, US)

Application Number: 381144
Filing Date: 1973-07-20
Publication_date: 1976-01-06
Assignee: Beatrice Foods Co. (Chicago, IL)
Primary Class(es): 425/556 249/64, 425/438, 425/441, 425/468, 425/573, 425/577, 425/589, 425/DIG5
Other Classes:
US Patent Ref:
3509603May, 1970Halsall et al.425/249.
3564660Feb, 1971Darnell425/249.
3585690Jun, 1971Tucker425/249.

Other Refs:
Primary Examiner: Baldwin, Robert D.
Assistant Examiner: Rowold, Carl
Attorney: Hume, Clement, Brinks, Willian, Olds & Cook, Ltd.