Electric heating – Heating devices – With heating unit structure
Patent
1993-12-23
1995-01-10
Reynolds, Bruce A.
Electric heating
Heating devices
With heating unit structure
219213, 392437, H05B 310
Patent
active
053809882
ABSTRACT:
A heated mat structure provides a plurality of thin heated mats, each releasably interconnected in electrical parallel through an electrical powering system providing low voltage current. Each heated mat comprises relatively thin rectilinear laminated structure, having a rigid back panel with fastening means for positional maintenance, supporting a thin heating lamina having an element formed of electrically resistive metallic foil imbedded in plastic sheet material which in turn supports an outer surfacing lamina having an exposed surface of high friction material to prevent slipping. The laminae may carry plastic sheet material between adjacent surfaces and about peripheral edges to aid interconnection and isolation. All adjacent structural surfaces are mechanically joined. Each pad provides an electrical connector communicating spacedly from interconnection with its foil heating element. Each electrical connector is of the vampire type that may be releasably interconnected at selected positions along an elongate two-wire conductor to allow various modular arrays of plural heating mats about that conductor. The electrical system is powered by ordinary household current.
REFERENCES:
patent: 2844696 (1958-07-01), Coster
patent: 3041441 (1962-06-01), Elbert
patent: 3721800 (1973-03-01), Eisler
patent: 4439666 (1984-03-01), Graham
patent: 4717812 (1988-01-01), Makita
patent: 4967057 (1990-10-01), Bayless
"Warm Welcome", Brochure; Lighthouse Internation, Ltd.
Reynolds Bruce A.
Switzer Michael D.
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