Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Reexamination Certificate
2005-06-27
2009-10-20
Campbell, Thor S (Department: 3742)
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
C392S469000
Reexamination Certificate
active
07606475
ABSTRACT:
A system is disclosed for generating heat for the purpose of radiating such heat into a separate entity such as a residential housing structure or a pavement surface. The system includes a steel conduit positioned proximate the separate entity to be heated. An annular copper conductor element in the form of a continuous loop is disposed within the interior of the steel conduit to form a substantially contiguous contact surface between the conductor element and the interior surface of the conduit. A power supply member provides an alternating current of approximately 240-480 V, and a transformer is electrically connected to the power supply member for receiving this alternating current. The transformer has a pair of low voltage bushings each secured, respectfully, to one end of the continuous conductor element thereby passing a low voltage AC current through said conductor element to create a low voltage differential between the conductor ends to generate heat along the contiguous contact surface from a fluctuating magnetic field.
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