Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Plural wear or shaping surfaces mounted for alternative use
Patent
1998-03-12
2000-09-12
Heitbrink, Jill L.
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
Plural wear or shaping surfaces mounted for alternative use
249102, 425190, B29C 3314
Patent
active
061168866
ABSTRACT:
Flash built-in and flashless types of lens-fitted photo film units respectively include first and second front covers. The first front cover includes a first front wall and a first cover wall formed in an erect orientation relative to the first front wall. The second front cover includes a second front wall shaped partially equally to the first front wall. A second cover wall is formed in an erect orientation relative to the second front wall and shaped at least partially equally to the first cover wall. In molding operation for the front covers, the first or second cover wall is formed between a main cavity mold and a main core mold, which are confronted with each other. The main core mold is movable relative to the main cavity mold in a direction according to the erect orientation of the first and second cover walls. The first or second front wall is formed between the main core mold and a selected one of first and second auxiliary molds. The first and second auxiliary molds are selectively fitted in a portion of the main cavity mold, confronted with the main core mold, and shaped differently from each other at least partially. The main cavity mold and the main core mold are allowed to be used commonly between the first and second front covers.
REFERENCES:
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patent: 4979720 (1990-12-01), Robinson
patent: 5387096 (1995-02-01), Wieser
patent: 5536463 (1996-07-01), Baccman
patent: 5662948 (1997-09-01), Sjoberg
Pye, Injection Mould Design, pp. 42-47, 1968.
Fuji Photo Film Co. , Ltd.
Heitbrink Jill L.
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