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:
Jan. 16, 1990
Filed:
Jan. 06, 1989
Kazuhiko Ishikawa, Kashiwara, JP;
Yoichi Takahashi, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An electric oven such as a toaster oven according to this invention includes in addition to a heating chamber, a heater for the heating chamber and a temperature detector for measuring the temperature therein, a control device serving to automatically determine a target temperature on the basis of the initial temperature inside the heating chamber so that a desired degree of heating can be effected independently of the initial temperature inside the heating chamber by switching off the power supply when the detected temperature reaches the target temperature thus set. According to another embodiment of the present invention, minimum and maximum heating times are set such that the control device will additionally serve to continue the heating independently of the measured temperature if the preset minimum heating time has not elapsed from the beginning of the heating and to shut off the power supply independently of the measured temperature if the preset maximum heating time has elapsed, so that the heating can be effected safely and dependably even if the temperature detector malfunctions.