Method of processing ceramic materials and a microwave furnace therefore
May 22, 2016. 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 References 3569656 Combination microwave and gas oven Microwave heating oven High frequency heating apparatus Combined microwave and electric heating oven selectively controlled by gas sensor output and thermistor output Switching system in a combined microwave and convection cooking apparatus Microwave ovens and methods of cooking food Method and apparatus for water vapor control in convection ovens Method for heat treating and sintering metal oxides with microwave radiation Method and device for microwave sintering large ceramic articles InventorAssigneeApplicationNo. 591594 filed on 05/22/1996US Classes:219/681, Convection heating219/685, Resistive heating219/700, Conveyor219/715, Power switching219/718Having duty cycleExaminersPrimary: Leung, Philip H.Attorney, Agent or FirmForeign Patent References
International ClassH05B 006/68Foreign Application Priority Data1993-08-10 GBAbstractA microwave furnace (10) of the type comprising a microwave source (14), coupled to an enclosure for the confinement of microwaves and for containing an object to be heated (12). An independently controllable alternate heating (20) is disposed in relation to the enclosure (12) to provide at least one of radiant and convective heating within the enclosure. The method comprises the steps of energizing the alternate heater (20) so as to generate heat substantially throughout the heating cycle of the furnace (10) and controlling the quanity of heat generated in the object y one or both of the microwaves and the alternate heater so as to provide a desired thermal profile in the object. A temperature sensor to measure the ambient temperature within the enclosure (12) can be provided and control circuit (54) responsive to the sensed temperature controls the quanity of heat generated in the object by the microwaves and the alternate heat so as to provide a desired thermal profile within the object.Other References
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