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:
Jun. 14, 2016
Filed:
Nov. 19, 2007
Oleg S. Fishman, Maple Glen, PA (US);
John H. Mortimer, Little Egg Harbor Township, NJ (US);
Satyen N. Prabhu, Voorhees, NJ (US);
Mike Maochang Cao, Westampton, NJ (US);
Oleg S. Fishman, Maple Glen, PA (US);
John H. Mortimer, Little Egg Harbor Township, NJ (US);
Satyen N. Prabhu, Voorhees, NJ (US);
Mike Maochang Cao, Westampton, NJ (US);
INDUCTOTHERM CORP., Rancocas, NJ (US);
Abstract
An apparatus and process are provided for controlling the heating and melting of a material that is non-electrically conductive in the solid state and is electrically conductive in the non-solid state. Power is selectively directed between coil sections surrounding different zones of the material in a susceptor vessel by changing the output frequency of the power supply to the coil sections. Coil sections are at least one active coil section, which is connected to the output of the power supply, and at least one passive coil section, which is not connected to the power supply, but is connected in parallel with a tuning capacitor so that the at least one passive coil section can be selectively operated at, or near, resonant frequency when the transition material in the vessel is molten. Depending upon the state of the transition material in the susceptor vessel, the frequency of the power applied to the active coil section can be changed to generate a magnetic field that selectively couples with the susceptor vessel, transition material in the vessel, and/or the passive coil section.