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:
Nov. 21, 2006
Filed:
Dec. 23, 2003
Applicants:
Kazushige Morihara, Yokohama, JP;
Hiroshi Nakayama, Mishima, JP;
Inventors:
Kazushige Morihara, Yokohama, JP;
Hiroshi Nakayama, Mishima, JP;
Assignees:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
If a temperature of a heat rollerrises abnormally, a thermostatoperates. When the thermostatoperates, a conduction path to an excitation coilof a relayis cut off so that a normally open contactof the relaycan be operated. When the normally open contactoperates, the supply path of a drive signal supplied from a frequency variable oscillatorto a transistoris cut off. By the cut-off, a high-frequency current does not flow through coilsto; therefore, induction heating with respect to the heat rolleris stopped.