David L Doubet

US Patent:

50971140, Mar 17, 1992

Filed:

Aug 23, 1990

Appl. No.:

7/571163

Inventors:

Stephen C. Mann - Wales WI
David L. Doubet - Watertown WI
Gary D. Etter - Wauwatosa WI

Assignee:

General Signal Corporation - Stamford CT

International Classification:

H05B 310

US Classification:

219553

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.

Address:

871 Hickory Ct, Watertown, WI 53094

VIN:

1FAHP3H25CL309588

Make:

FORD

Model:

FOCUS

Year:

2012