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RETENTION OF RECHARGEABLE DEVICES

  • US 20090096415A1
  • Filed: 12/19/2008
  • Published: 04/16/2009
  • Est. Priority Date: 09/27/2002
  • Status: Abandoned Application
First Claim
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1. A power transfer unit for a portable electrical device, the portable device being separable from the power transfer unit and being adapted to receive power by inductive coupling when the portable device is placed against the power transfer unit, the power transfer unit comprising:

  • an inductive power supply adapted to supply power inductively by the generation of an electromagnetic field; and

    a power transfer surface disposed within the electromagnetic field and against which the portable device is removably placed within the electromagnetic field, whereby the portable device may receive power from the inductive power supply through inductive coupling, the power transfer surface including an indication that a part of the power transfer surface is more appropriate for charging the portable device.

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