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:
Aug. 11, 2009
Filed:
Apr. 09, 2004
Timothy W. Lunneborg, Wahpeton, ND (US);
Paul Gene Dimmer, Wahpeton, ND (US);
Kevin Loll, Wahpeton, ND (US);
James Ronald Thomas, Battle Lake, MN (US);
Neil Howard Thomas, Brookings, SD (US);
David M. Browning, Portland, OR (US);
Timothy W. Lunneborg, Wahpeton, ND (US);
Paul Gene Dimmer, Wahpeton, ND (US);
Kevin Loll, Wahpeton, ND (US);
James Ronald Thomas, Battle Lake, MN (US);
Neil Howard Thomas, Brookings, SD (US);
David M. Browning, Portland, OR (US);
MagTec Energy, LLC, Fargo, ND (US);
Abstract
A magnetic heater is provided having a conductive member and a first magnet assembly comprising a frame and at least one magnet disposed a distance adjacent the conductive member, wherein the first magnet assembly and the first frame are adapted to rotate relative to each other about an axis so as to induce eddy currents in the conductive member when relative motion is produced between the conductive member and the first magnet assembly, the at least one magnet adapted to move relative to the frame in dependence on the change in the rate of rotation of the frame. The magnetic heater is provided with a passive relative-positioning actuator adapted to move one or more magnets in an axial direction and a radial direction relative to the frame. Such movement is exploited to control the magnetic field strength at the conductive member by controlling, among other things, the conductor/magnet spacing.