Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1992-10-06
1995-06-06
Jeffery, John A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219462, 219465, 219540, H05B 368
Patent
active
054224594
ABSTRACT:
A ordinary electric heating-tube is sleeved with an aluminum tube to form a double-walled structure in which the aluminum tube is pressure reformed to a shape of upper flat and lower circular surface. A lower tray is made of steel and pressed with recessed grooves. The double-walled electric heating-tube is disposed in the grooves of the tray and covered with an aluminum evenly-heating-plate. The evenly-heating-plate, the electric heating tube, and the lower tray is pressed to form an integral body. The outer wall of the electric heating-tube has a large contacting area with the evenly-heating-plate.
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Jeffery John A.
Zibo Electrothermal Appliances Factory
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