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:
Sep. 01, 2026
Filed:
Oct. 01, 2024
Inductoheat, Inc., Madison Heights, MI (US);
Gary A. Doyon, Grosse Pointe Farms, MI (US);
Michael A. Nallen, Ware, MA (US);
Randall J. Minnick, Lake Orion, MI (US);
Elik Dvorkin, Woodbridge, CT (US);
INDUCTOHEAT, INC., Madison Heights, MI (US);
Abstract
A method and system are provided for initializing a high frequency inverter in an induction heating system, to minimize the startup time and ramp-up time to a target power level of the induction heating system for precise heat distribution control in a workpiece. The system and method utilize initial inverter control frequencies approximately equivalent to a resonant frequency of the resonant circuit which varies relative to discrete sample to sample variations in the associated workpiece. The power supply control is then initialized at an initial power level substantially lower than the target power level associated with the workpiece to be heated until a phase-locked loop is locked to the actual resonant frequency, at which point the power supply rapidly increases power the target power level for the particular induction heat treatment application.