Low-voltage heating device

Details Low-voltage heating device Low-voltage heating device

1990-08-23

1992-03-17

Reynolds, Bruce A.

Electric heating

Heating devices

With heating unit structure

219552, 219528, 219496, 373110, 373127, 266128, 432209, H05B 310

Patent

active

050971140

ABSTRACT:
A low-voltage electric heating device for application in a carburizing furnace is provided with an outer housing or sleeve for replaceable disposition within the furance, the outer housing radiating heat directly into said furnace; at least one current path conductor is positioned within the outer housing, the current path conductor being electrically connectable to a source of power and electrically insulated from a substantialy part of the outer housing. The heat radiated from the heating device is concentrated in the lower part because a current path has in series at least the current path conductor and at least a corresponding part of the outer housing, the resistance of the lower part of the outer housing being relatively large with respect to the remainder of the current path.

REFERENCES:
patent: 1432064 (1922-10-01), Hadaway
patent: 2896004 (1959-07-01), Duffy et al.
patent: 4135053 (1979-01-01), Kastilahn et al.
patent: 4215233 (1980-07-01), Kastilahn
patent: 4332552 (1982-06-01), Seelandt
patent: 4701933 (1987-10-01), Evensen

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