Flexible heating element having a layer of fixing varnish

Details Flexible heating element having a layer of fixing varnish Flexible heating element having a layer of fixing varnish

1995-12-21

1997-10-14

Walberg, Teresa J.

Electric heating

Heating devices

With heating unit structure

219542, 219528, 219544, 338264, 338301, H05B 334, H01C 318

Patent

active

056768729

ABSTRACT:
A heating element has a flat, flexible strip of electrically insulating material around which is wound a conductor wire. A layer of fixing varnish covers the turns of the conductor wire and the flat strip. Two clips attached to the ends of the strip provide electrical contact with the conductor wire and serve to attach two electricity connection cables. The heating element can be bent without this affecting its ohm value since the fixing varnish prevents the turns of the conductor wire from moving when the strip is being bent.

REFERENCES:
patent: 2119292 (1938-05-01), Rollefson
patent: 3249983 (1966-05-01), Cobaugh
patent: 3757086 (1973-09-01), Indoe
patent: 3887894 (1975-06-01), Rudd et al.
patent: 4185263 (1980-01-01), Frey
patent: 4272673 (1981-06-01), Semanaz et al.
patent: 5018986 (1991-05-01), Freitag
patent: 5137468 (1992-08-01), Murakami
patent: 5343018 (1994-08-01), Limbach
patent: 5434388 (1995-07-01), Kralik et al.

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