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:
Aug. 15, 1978
Filed:
Apr. 05, 1977
Junzo Tanaka, Fujiidera, JP;
Toshio Kai, Yamatokoriyama, JP;
Abstract
A microwave oven equipped with a rotary table or turntable includes a heating chamber whose rear wall is formed into a concave shape of semi-circular cross section approximately concentric with a rotational center of the rotary table to eliminate any idle space at corner portions in the heating chamber for providing an economical microwave oven of compact size, and also to prevent the rotary table from being locked by a large object to be heated which may be caught by the corner portions during rotation, with the simultaneous elimination of damage to an observation window due to spark discharge arising from a metallic material included in the object, and with the further improvement of uniform heating within the heating chamber.