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. 16, 2010
Filed:
Apr. 22, 2005
Isamu Nagano, Kanazawa, JP;
Kouichi Igarashi, Komatsu, JP;
Isamu Nagano, Kanazawa, JP;
Kouichi Igarashi, Komatsu, JP;
Kanazawa University Technology Licensing Organization Ltd., Kanazawa-shi, JP;
Komatu Power Tron Co., Ltd, Komatsu-shi, JP;
Abstract
The thermal therapy device comprises an inverter circuit connected to the primary side of a transformer, a series resonance circuit connected to the secondary side of the transformer and including a magnetic field generation coil and a resonance controller, and a controller for determining the resonance frequency based on the secondary current. The controller has a measurement mode and an operation mode which are alternately repeated. During the measurement mode the resonance frequency of the series resonance circuit is measured, while during the operation mode a drive signal of said measured resonance frequency is supplied from the controller to the inverter circuit.