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. 16, 1982
Filed:
Jan. 22, 1979
Applicant:
Inventor:
Mitsuyuki Kiuchi, Kadoma, JP;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
219 / ; 219 1077 ; 363 49 ; 363 79 ;
Abstract
An induction heating apparatus comprising a static power converter operative to produce high-frequency power from low-frequency power and a heating unit to produce a time-varying magnetic field in response to the high-frequency power. The power converter includes a switching circuit and control means for triggering at high frequency during an incipient stage of operation of the apparatus and lower frequency varying according to the input power to the power converter and the load of the heating unit after the incipient stage.