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:
May. 22, 1990
Filed:
Apr. 26, 1989
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A heating cooking apparatus utilizes a sensor of the type used in a conventional heating cooking apparatus. The change in the resistance of the sensor due to a temperature change is converted to a level representing the corresponding voltage change and this sensor level is utilized along with a level corresponding to a preset temperature of a temperature control level so selected that heat sources is turned on when the sensor level is less than this level and the heat sources is turned off when this level is exceeded so as to eliminate the occurrence of any overshooting irrespective of the presence or absence of preheating, that is, at various starting temperatures as well as in various operating conditions including one where a door is opened during the cooking and another where the cooking is interrupted due to an erroneous operation, thereby ensuring the best cooking result.