PTC heating device
April 19, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesConstant-temperature heater PTC resistance heater Combined electric water heating and vessel support plate for a beverage preparation device Electric heating device employing PTC heating element for preheating of heating oil Intake heating apparatus of an internal combustion engine Nozzle assembly with integrated PTC heater for prewarming fuel oil Apparatus for heating a mixed gas on an internal combustion engine Electric soldering iron having a PTC heating element Heater clamping arrangement for electrically heated boilers PTC heating device Patent #: 4728779 InventorsAssigneeApplicationNo. 183710 filed on 04/19/1988US Classes:392/395, With wick392/391, By radiant heat source392/403Container with self-contained evaporant supplyExaminersPrimary: Walberg, TeresaAttorney, Agent or FirmForeign Patent References
International ClassesH05B 003/14A61L 009/03 Foreign Application Priority Data1987-04-21 JPAbstractA PTC heating device is adapted to be used as a heat source for an electric vaporizer which is adapted to heat liquid medicine, e.g., liquid insecticide, aromatic liquid, or the like, to vaporize it. The PTC heating device includes a casing in which an electrode structure including at least one PTC thermistor having electrodes arranged on both surfaces thereof and two electrode members interposing the PTC thermistor therebetween is received. The PTC heating device further includes a heat-radiating member mounted through a heat-conducting member with respect to the casing and for heating an absorber having sucked up liquid medicine from a reservoir having the liquid medicine contained therein to vaporize the liquid medicine. One of the electrodes of the PTC thermistor is in close contact with a flat surface of the heat-conducting member through one of two electrode members, so that heat generated at the PTC thermistor is efficiently transmitted to the heat-radiating member through the heat-conducting member.Field of SearchComprising variable resistance meansComprising nonlinear or negative temperature coefficient resistance means Including or comprising holding or support means for material to be heated With heat storage or transfer means (vanes) With heat storage or transfer means (e.g., fins or plate) Manifold Integral with tip Electric heater Fuel only Thermistor type | |
