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:
Mar. 21, 2006
Filed:
Jan. 24, 2003
Izuo Hirota, Toyonaka, JP;
Yuji Fujii, Kobe, JP;
Koji Niiyama, Kobe, JP;
Takahiro Miyauchi, Kobe, JP;
Atsushi Fujita, Minoo, JP;
Manabu Takahashi, Takatsuki, JP;
Izuo Hirota, Toyonaka, JP;
Yuji Fujii, Kobe, JP;
Koji Niiyama, Kobe, JP;
Takahiro Miyauchi, Kobe, JP;
Atsushi Fujita, Minoo, JP;
Manabu Takahashi, Takatsuki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An induction heater having a safety function of lowering or stopping the heating power when an object to be heated moves, the safety function hardly interfering with the cooking activities of a user is provided. The induction heater includes an inverter circuit, an output detection section for detecting the magnitude of the inverter circuit, a first movement detection section, and a storage section for storing a control value before the first movement detection section detects a movement of the object. In a reach control mode, the output of the inverter circuit is gradually increased to a target. In a stable control mode, the output of the inverter circuit is maintained at the target. When the first movement detection section detects a movement of the object, a control section shifts to a first output mode in which a control value derived from the stored control value is output.