Hollow dishes with meltable cores and method of making such dish

Details Hollow dishes with meltable cores and method of making such dish Hollow dishes with meltable cores and method of making such dish

1983-09-09

1985-03-19

Green, Randall L.

Stoves and furnaces

Heaters

Dish

126375, A47G 2304

Patent

active

045052522

ABSTRACT:
A hollow dish with a discrete, meltable core such as a wax core includes top and bottom members welded to one another at their periphery, and a meltable, preferably wax core confined within an oxygen-free, water-free cavity between the top and bottom members. A method for making a hollow dish with such a core includes liquifying a meltable substance such as wax in an oxygen-free, water-free, inert atmosphere; cooling and solidifying the meltable substance to form a meltable core; placing the meltable wax core in the cavity inside a hollow dish; removing all oxygen and water from the core-containing cavity inside the hollow dish; and sealing the hollow dish to preclude escape of the wax core from the cavity and to preclude oxygen and water from entering the cavity.

REFERENCES:
patent: 3148676 (1964-09-01), Truog et al.
patent: 3557774 (1971-01-01), Kreis
patent: 4246884 (1981-01-01), Vandas

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