Self-sealing plastic base and a cylindrical flask for lost wax p

Details Self-sealing plastic base and a cylindrical flask for lost wax p Self-sealing plastic base and a cylindrical flask for lost wax p

1983-09-22

1988-10-18

Godici, Nicholas P.

Metal founding

Means to shape a forming surface

Pattern

164244, 164376, 249 54, 249 62, B22C 702, B22C 904, B22C 2100

Patent

active

047779969

ABSTRACT:
A plastic base for use with a cylindrical flask for the elimination of wax patterns prepared for making metal castings by the lost wax process is identified. The base is made of a plastic material which is used in place of conventionally found rubber bases. The base is constructed of a thin-walled resilient plastic material and allows for direct set up of the wax patterns, as well as increased speed in the preparation of the plaster mold in the cylinder for making metal castings. The plastic base comprises an inner annular raised platform comprising a shoulder and the cylindrical flask is pressed on the shoulder deforming the plastic about the bottom edge of the flask to form a seal between the base and flask.

REFERENCES:
patent: 2487400 (1949-11-01), Tupper
patent: 3065875 (1962-11-01), Negoro
patent: 3387765 (1968-06-01), Davis
patent: 3610317 (1971-10-01), Benfield et al.
patent: 4081019 (1978-03-01), Kulig

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