Apparatus and method for tracking the melting of frozen...

Details Apparatus and method for tracking the melting of frozen... Apparatus and method for tracking the melting of frozen...

2005-12-06

2005-12-06

Walberg, Teresa J. (Department: 3753)

Electric heating

Heating devices

Combined with diverse-type art device

C340S602000, C219S497000

Reexamination Certificate

active

06972395

ABSTRACT:
A snow melting system including a controller, a first heater supplying heat under the control of the controller, the first heater supplying heat at a power density, a moisture detection apparatus located apart from the first heater, the moisture detection apparatus communicatively coupled to the controller and a second heater located proximate to the moisture detection apparatus, the controller directing power to the second heater at an other power density, the other power density substantially the same as the power density.

REFERENCES:
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patent: 4980673 (1990-12-01), Kleven
patent: 5140135 (1992-08-01), Freeman
patent: 5345223 (1994-09-01), Rutkiewicz
patent: 5710408 (1998-01-01), Jones
patent: 5900178 (1999-05-01), Johnsen
patent: 6140609 (2000-10-01), Jones
patent: 6328467 (2001-12-01), Keyhani

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