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. 19, 2021
Filed:
Jul. 09, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Masafumi Sadahira, Shiga, JP;
Koji Yoshino, Shiga, JP;
Masayuki Kubo, Shiga, JP;
Yoshiharu Omori, Shiga, JP;
Abstract
A rotating antenna () includes: a ceiling surface () and a side-wall surface () that constitute a waveguide structure (); and a horn () that radiates a microwave into a heating chamber. The rotating antenna () further includes a flange () that is formed on a periphery of the side-wall surface () so as to face a bottom surface (), which is an inner wall surface of the heating chamber, and so as to surround the side-wall surface (). The flange () has choke sections () that reduce a leakage of the microwave. This configuration can generate a relatively low impedance region so as to surround the side-wall surface (), thereby enhancing a leakage reducing performance of the rotating antenna () and increasing directivity of the microwave radiated from the rotating antenna (). Consequently, if a part of substances to be heated arranged on a plate is a food that a user does not want to warm, the rotating antenna () selectively heats an area in which a food that the user wants to warm is present but hardly heats the food that the user does not want to warm.