Removable heating element for high temperature furnaces

Details Removable heating element for high temperature furnaces Removable heating element for high temperature furnaces

1975-02-18

1976-10-12

Envall, Jr., R. N.

Electric heating

Microwave heating

Tunnel furnace

13 25, 219403, F27D 1102

Patent

active

039859460

ABSTRACT:
The roof of the heating chamber in a refractory furnace is made of refractory or brick with vertical holes therein and a number of hooks or holding means are suspended in these holes. The hooks project into the heating chamber and an electrical heating element means is suspended on the hooks. In order to remove the heating elements, a plastic bag is used which has its open edge fastened to the top surface of the furnace to enclose an opening in the furnace through which the heating element and the bricks or holding means to which the heating element is attached can be withdrawn. The bag is of sufficient size to enclose the entire assembly when withdrawn from the furnace. The parts are arranged so that another element can be placed in the furnace by another bag so that gaseous contents of the furnace are kept in the furnace.

REFERENCES:
patent: 2649487 (1953-08-01), Phillips
patent: 2721920 (1955-10-01), Weide
patent: 3259527 (1966-07-01), Beggs
patent: 3729570 (1973-04-01), Beck

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