Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Mold having movable core or movable pin
Patent
1976-02-05
1978-02-14
Husar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Mold having movable core or movable pin
B29F 100
Patent
active
040736105
ABSTRACT:
A mold and method for injection molding a plastic strip having living hinges. The mold includes a plurality of inlets through which liquid plastic is forced so as to partially fill the cavity within the mold. A push bar is movable into the cavity for simultaneously forming a living hinge in the molded product and for occupying a volume within the mold equal to the volume of the mold not filled initially by the liquid plastic. The product produced by the mold is in the form of a flat strip having a plurality of living hinges. The panels may be folded into a variety of final configurations with decorative leaves attached to the outwardly-facing exterior surface of the panels. Light may be shown through the panels in those areas not covered by the decorative leaves. One embodiment of the final configured panels is in the form of a light fixture having the configuration of a lamp shade or a box enclosing the lamp.
REFERENCES:
patent: T827844 (1969-10-01), Johnson et al.
patent: 3767742 (1973-10-01), Robin
patent: 3825637 (1974-07-01), Robin
patent: 3953560 (1976-04-01), Klein
Briggs W. R.
Husar Francis S.
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