Patent ID: 6906495
Filing Date: 2005-06-14
Classification: H01F,H02J

Abstract:
1. A system for transferring power without requiring direct electrical conductive contacts, the system comprising: i) a primary unit having a substantially laminar surface with at least one electrical conductor that generates an electromagnetic field when a current flows therethrough and having an active area defined within a perimeter of the surface, the at least one conductor being arranged such that electromagnetic field lines generated by the at least one conductor are generally parallel to the plane of the surface within the active area; and ii) at least one secondary device including at least one electrical conductor; wherein the active area of the primary unit has a perimeter large enough to surround the electrical conductor of the at least one secondary device in any orientation thereof substantially parallel to the surface of the primary unit in the active area, such that when the at least one secondary device is placed on or in proximity to the active area in a predetermined orientation, the electromagnetic field induces a current in the at least one conductor of the at least one secondary device.