Static molds – Container-type molding device
Patent
1974-12-04
1976-01-27
Husar, Francis S.
Static molds
Container-type molding device
249127, 264313, 425440, 425DIG44, B28B 706, B28B 720
Patent
active
039348105
ABSTRACT:
A flexible distensible mold for use in fabricating art forms and utilitarian articles, and for use with the aid of air pressure differential enlargement of the shaping cavity is provided with closeable slits extending from at least portions of the outside surface of the mold partly into the mold. With these improved molds, the withdrawal bore of the shaping cavity can be greatly enlarged and the side walls can be greatly extended with lower air pressure differentials than would be otherwise necessary. In addition, the closed slits permits the use of thicker walls and thus provide additional support for the weight of the shaped article particularly when formed in elongated molds.
REFERENCES:
patent: 1551603 (1925-09-01), Melosi
patent: 1828075 (1931-10-01), Saunders
patent: 1942993 (1934-01-01), Aultman
patent: 1983602 (1934-12-01), Daubenmeyer
patent: 2187260 (1940-01-01), Brandenburg
patent: 2196258 (1940-04-01), Erdle
patent: 2267610 (1941-12-01), Jone
patent: 2271454 (1942-01-01), Erdle
patent: 2537915 (1951-01-01), Roop
patent: 2739350 (1956-03-01), Lampman
patent: 3776683 (1973-12-01), Putzer
Brown John S.
Husar Francis S.
O'Halloran Joseph P.
The Quaker Oats Company
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