Electric resistance heating devices – Heating devices – Tank or container type liquid heater
Reexamination Certificate
2007-10-16
2007-10-16
Campbell, Thor S. (Department: 3742)
Electric resistance heating devices
Heating devices
Tank or container type liquid heater
C392S447000
Reexamination Certificate
active
11313516
ABSTRACT:
A windshield wiper solution dispenser located at vehicle servicing stations or fuel stations. The stations are usually located in geographic regions which are exposed to long periods of freezing temperatures. The solution dispenser is configured to maintain the solution within the dispenser in a liquid state during outside freezing temperatures. The dispenser has an interior region which contains the solution and also has a heater to keep the solution in a liquid state. A plurality of monitors or sensors are provided as well as temperature controlling mechanisms. In one embodiment the heater has a programmable logic device or controller to monitor the interior temperature and exterior temperatures as well as the solution liquid level and adjust the heater and the amount of solution contained in the dispenser as needed. The heater can be a coiled electrical resistance heater, an electrical liner heater, or a plurality of thermoelectric units which can be placed around the outside of the dispenser. The solution can be circulated through a gas heating source, as well as other environmentally friendly heating system such as solar powered panels and the like.
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Caldwell Brent A.
Pomeroy Chris E.
Campbell Thor S.
Hughes Law Firm PLLC
Jellett Matthew W.
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