The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 1984
Filed:
Jan. 10, 1983
Koichi Tateda, Yao, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention is directed to a cooking utensil such as a microwave oven wherein a food temperature-sensing probe is inserted into a foodstuff for detecting the internal temperature of the food. The food temperature-sensing probe includes a resonance circuit the resonance frequency of which varies depending on the internal temperature. A first signal generator is provided for delivering a series of signals which contain a variety of frequencies inclusive of the signals of the resonance frequency. A second signal generator is employed to provide sweeping signals for the series of signals developed from the first signal generator. A selecting circuit is connected to the second signal generator for selecting a particular value in the sweeping signals relevant to the desired temperature of the foodstuff. A wireless controlled circuit is provided which determines the occurence of the dip phenomena in a relationship with the particular value in the sweeping signals under the radiation of the series of signals generated from the first signal generator.