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. 04, 2012
Filed:
Jan. 09, 2007
Nobuo Shirokawa, Nara, JP;
Shinichi Sakai, Nara, JP;
Hideaki Moriya, Nara, JP;
Haruo Suenaga, Osaka, JP;
Manabu Kinoshita, Nara, JP;
Nobuo Shirokawa, Nara, JP;
Shinichi Sakai, Nara, JP;
Hideaki Moriya, Nara, JP;
Haruo Suenaga, Osaka, JP;
Manabu Kinoshita, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
To attain a more reliable prevention of an electric shock by checking whether the earth states for two circuit boards are good. There is detected a voltage generated at an anode current sensing resistorinserted into a path where the anode current of a magnetronflows and a signal is transmitted to a microcomputer. The microcomputeruses a selector switchto determine the earth states for an inverter circuit board and a control panel circuit board before operation of a device. In case either one or both of the circuit boards are in a floating state, operation of a high-frequency heating device is inhibited. Otherwise, operation of the high-frequency heating device is permitted.