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:
Jan. 07, 1992
Filed:
Aug. 06, 1990
Applicant:
Inventors:
Hiroshi Itoh, Kanagawa, JP;
Toshihiro Yokoo, Kanagawa, JP;
Assignee:
Denki Kogyo Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219 1077 ; 219 1071 ; 363 56 ; 323902 ;
Abstract
A high-frequency induction heating apparatus of an inverter type includes a high-frequency oscillator using a plurality of switching elements turning on and off at a high speed. A control unit for controlling the high-frequency oscillator includes a plurality of driving circuits for driving the switching elements and a control circuit for controlling the respective driving circuits, and interconnection between the driving circuits and the control circuit is made by optical fiber cables so that influence by external electromagnetic induction is not effected to operate the high-frequency induction heating apparatus effectively.