Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1974-12-06
1976-08-24
Bartis, A.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
174138J, 219213, 219357, 219546, 248 68R, 338290, 338318, H05B 334, H01C 312
Patent
active
039768554
ABSTRACT:
An electrical heating mat comprises an electrical resistance heating wire arranged in a loop formation with substantially straight leg portions between curved portions. A plurality of spaced apart spacer strips made of thermoplastic material are provided to hold the heating wire its looped formation. Each spacer strip comprises an elongated narrow strip body having a plurality of spaced open-sided were receiving loops having an inner dimension assuring snap-fit reception of the wire therein. One end of each strip body is provided with a snap-in coupling member dimensioned to snap-fit into a wire receiving loop at the end of an adjacent spacer strip to enable a plurality of mats to be interconnected together to form a larger unit. Spacer lands extending generally parallel to the leg portions of the heating wire may connect the spacer strips together.
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Altmann Horst Dieter
Haupt Eberhard
Bartis A.
Fasse W. G.
Firma Wilhelm Haupt
Roberts W. W.
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