Electric resistance heating devices – Heating devices – Fluid-in-circuit type heater
Reexamination Certificate
2006-02-10
2010-10-19
Campbell, Thor S (Department: 3742)
Electric resistance heating devices
Heating devices
Fluid-in-circuit type heater
C392S311000, C392S324000
Reexamination Certificate
active
07817906
ABSTRACT:
The Direct Electric Resistance Liquid Heater comprises a liquid heating chamber containing a plurality of electrodes. The electrodes are spaced apart to create a plurality of channels through which the liquid to be heated passes. The electrodes are each connected to a power supply by one or more switches. A controller controls the switches based upon data received from a temperature sensor, sensing the temperature of the liquid, and/or an electric current sensor, sensing the current utilized by the liquid heater. Selection of the number and spacing of the electrodes, and the number of switches, provides the controller with various current levels options to apply to the liquid to be heated. The current levels available due to the number and spacing of the electrodes and the number of switches, span the range from minimum current to maximum current such that the controller can incrementally increase or decrease the current applied to the liquid to be heated without disrupting other users of the same power source.
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Barzyk James E.
Bowers John H.
Callahan Jeremiah M.
Campbell Thor S
ISI Technology, LLC
Lerner David Littenberg Krumholz & Mentlik LLP
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