Plastic article or earthenware shaping or treating: apparatus – Sets of male-female press molds – Traveling female mold
Reexamination Certificate
2006-11-14
2006-11-14
Gupta, Yogendra N. (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Sets of male-female press molds
Traveling female mold
C425S422000, C425S423000, C425S438000, C425S809000
Reexamination Certificate
active
07134866
ABSTRACT:
An apparatus for manufacturing hollow, plastics articles having internal undercuts, comprising at least one compression-molding unit, composed of an upper male mold part comprising a plug and of a lower female mold part aligned, with the male mold part, an actuation for actuating the mold parts between a spaced position, at which a dose of plastics is deposited in the female mold part, and an adjacent, compression molding position, a slideable tube, having an end portion with angularly distributed seats with oscillating elements articulated along radial planes, provided externally with recesses, a stem accommodated coaxially inside the tube, that actuates during the mold closure, the oscillating elements to form, with the tube end portion, the molding plug, and, during the mold opening a position in which to allow the extractor to remove articles from the plug.
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Patent Abstracts of Japan vol. 015, No. 505 (M-1194), Dec. 20, 1991 & JP 03 222708 A (Hitachi Lighting Ltd.) Oct. 1, 1991 abstract.
Gupta Yogendra N.
Josif Albert
Modiano & Associati
Nguyen Thu Khanh T.
O'Byrne Daniel
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