Apparatus for the uniform and rapid heating of foodstuffs
Patent 4904835 Issued on February 27, 1990. Estimated Expiration Date: 
May 8, 2009. 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.
May 8, 2009. 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 3699899 3745291 3889009 Method and apparatus for the high frequency preheating of elastomeric products Continuous method of sterilizing foodstuffs Conveyorized microwave heating system Cooking appliance with sensor means Counter-top microwave oven with horn and diffusing lens Microwave irradiating sterilization process Patent #: 4808782 InventorsAssigneeApplicationNo. 348864 filed on 05/08/1989US Classes:219/701, Plural heating zones99/451, ELECTRIC, RADIANT OR VIBRATIONAL TREATING MEANS219/704, Load condition sensor219/748, Radiator (e.g., antenna, etc.)219/762, Load support426/234, TREATMENT OF PACKAGED PRODUCT BY ELECTRICAL OR WAVE ENERGY426/241Heating by electromagnetic waveExaminersPrimary: Leung, Philip H.Attorney, Agent or FirmForeign Patent References
International ClassH05B 006/78Foreign Application Priority Data1987-04-15 DEAbstractAn apparatus is provided for the uniform and rapid heating of foodstuffs, usually for pasteurization and sterilization purposes, by means of microwave energy. The cross-sectional shape of the outlet of the wave guides through which the microwave energy is supplied is selected so as to be geometrically similar to that of the product to be treated. A spacing is maintained between the outlet aperture and the surface of the product, which spacing is not greater than the wavelength of the microwave energy be used. These features provide rapid and appropriate processing of a food product while, at the same time, preventing the harmful overheating of the edge regions of the product.Field of SearchELECTRIC, RADIANT OR VIBRATIONAL TREATING MEANSAutomatic control TREATMENT OF PACKAGED PRODUCT BY ELECTRICAL OR WAVE ENERGY Heating by electromagnetic wave To cook Having specific electrical or wave energy feature Using microwave energy Using direct contact with electrical or electromagnetic radiation And heating means Including mechanical comminuting or conveying means | |
