Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Reexamination Certificate
2008-03-18
2008-03-18
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
C392S441000, C122S013010, C122S017100
Reexamination Certificate
active
10808686
ABSTRACT:
A water heater including a water inlet line having an inlet opening that introduces cold water to a tank, a water outlet line having an outlet opening that withdraws heated water from the tank, and a heating element. The water heater further includes a control circuit. The heating element can be an electrical resistance heating element, a gas heating element, or a combination thereof. In one construction, the gas heating element includes a first combustive section and a second combustive section separately controlled from the first combustive section.
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Campbell Thor S.
Michael & Best & Friedrich LLP
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