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. 19, 2013
Filed:
Aug. 28, 2008
Julian Andrew John Fells, Horsham, GB;
David Martin Pooley, Stapleford, GB;
Julian Andrew John Fells, Horsham, GB;
David Martin Pooley, Stapleford, GB;
Access Business Group International LLC, Ada, MI (US);
Abstract
There is disclosed an inductive power transfer system including a primary unit and a secondary device separable from the primary unit, the primary unit may include a power transfer surface and more than two field generators each operable to generate an electromagnetic field. The field generators may be located at different positions relative to the power transfer surface. The secondary device may include a power receiver having a secondary coil. In one embodiment, the system may determine at least one of the position and the orientation of the power receiver relative to the power transfer surface, and control the field generators such that at least one first field generator and at least one second field generators, selected in dependence upon such determination, are active in a substantially opposite sense to one another so as to direct magnetic flux through the secondary coil thereby supplying power to the secondary device, and further such that a third one of the field generators is inactive so that fewer than all of the field generators are active simultaneously.