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. 02, 2004
Filed:
Mar. 19, 2002
William Adam Morrison, Boaz, AL (US);
Tocco, Inc., Boaz, AL (US);
Abstract
A compact induction heating system that is at least partially powered by a source of substantially clean DC current. The induction heating system includes a high frequency inverter with an input connected to a substantially clean DC current source, a first current conductive path including a first capacitor and a first switch closed to cause one half cycle of AC current to flow in the first path by discharging the first capacitor, a second current conductive path including a second capacitor and a second switch closed to cause a second half cycle of AC current to flow in the second path by discharging the second capacitor, a single load inductor in both of the paths with AC current flowing in a first direction through the inductor when the first switch is closed and in a second opposite direction through the inductor when the second switch is closed, and a gating circuit to alternately close the switches at a driven frequency to control heating by the load inductor.