Patent ID: 7952324

Claim:
A portable electrical or electronic device, adapted to receive power inductively from an external unit that has a field generating surface and a field generator which generates an electromagnetic field at or over the field generating surface, the device being adapted to receive power from the external unit when placed in an intended power-receiving disposition on or in proximity to said field generating surface and being separable from the external unit when not receiving power therefrom, the device comprising: a housing including a predetermined portion having an external surface which faces said field generating surface when the device is placed in said power-receiving disposition, said predetermined portion also having an internal surface; and a magnetic core component arranged within said housing on or in proximity to said internal surface of said predetermined portion so that the core component couples with said field when the device is in its said power-receiving disposition, the magnetic core component including a thin sheet of magnetic material and also including a coil wound around said sheet for receiving power inductively from the external unit, the sheet and the coil being arranged so that a longitudinal axis of said sheet and a central axis of said coil each extend generally parallel to said field generating surface when the device is in said power-receiving disposition.