Electric heating cord with non-heating core-conducting element a

Details Electric heating cord with non-heating core-conducting element a Electric heating cord with non-heating core-conducting element a

1998-03-10

1999-12-14

Paschall, Mark

Electric heating

Heating devices

With heating unit structure

219212, 219528, 219544, 219547, H05B 100, H05B 302

Patent

active

060021179

ABSTRACT:
A heating cord utilizes a non-heating core conductor that is wrapped with a high temperature insulator. The high temperature insulator is wrapped with a heat resistant insulator, wherein the heat resistant insulator is spirally wound with a heat generating wire. Finally, an insulation sheath covers entire embodiment forming a heat-generating cord. The core conductor and the heat generating wire are connected, forming a single electronic circuit wherein the electric current flowing along the core conductor flows in the opposite direction of the electric current flowing along the heat generating wire. As a result, the opposing electromagnetic fields generated by the opposing flows of electric current neutralize each other and function to reduce electromagnetic field emissions generally known to be harmful to humans. The present design allows safe operation well above the approximate 100 watt limitation inherent in designs that utilize resistive, heating-generating core elements.

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patent: 5206485 (1993-04-01), Srubas et al.
patent: 5394507 (1995-02-01), Okamoto
patent: 5521358 (1996-05-01), Eilentropp

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