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:
Dec. 07, 1993
Filed:
Sep. 11, 1991
Daisuke Bessyo, Nara, JP;
Naoyoshi Maehara, Nara, JP;
Yuji Nakabayashi, Yamatokooriyama, JP;
Takahiro Matsumoto, Nara, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A high frequency heating apparatus includes a unitary structure including a magnetron for generating a microwaves, an inverter power supply for supplying a high voltage electric power to the magnetron, and a cooling unit for cooling the magnetron and the inverter power supply, all of which are accommodated within a common metallic casing. The unitary structure is provided at least one of a detector for detecting an operating condition of the cooling unit and a safety device including a detector for detecting a mounting of the metallic casing to a cabinet. For avoiding an electric shock, the unitary structure is divided into high and low voltage portions and the magnetron and the inverter power supply are electrically connected directly to each other without relying on the unitary structure so as to thereby accomplish a structure effective to minimize noise and to improve the reliability and the safety factor.