Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Reexamination Certificate
2008-01-01
2008-01-01
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
C392S441000
Reexamination Certificate
active
11118238
ABSTRACT:
The present invention discloses an electrical water heater including a container body which is adapted to contain a predetermined volume of water, a heating unit mounted to the heater body for heating the water, and a temperature control unit for operating the heating unit to heat the water. The temperature control unit includes a temperature adjuster for setting a heat-up temperature of the water, a thermal sensor for instantly monitoring a temperature of the water, a controlling circuit electrically coupled to the thermal sensor and the temperature adjustor for comparing the heat-up temperature and the temperature, whenever the temperature and the heat-up temperature are not matched, the controlling circuit is capable of outputting an operative signal to heating unit to manage a heating process.
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Campbell Thor S.
Chan Raymond Y.
David and Raymond Patent Group
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