• US 20090096413A1
  • Filed: 05/07/2008
  • Published: 04/16/2009
  • Est. Priority Date: 01/31/2006
  • Status: Active Grant
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First Claim
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1. A system for inductive powering and charging of portable devices or batteries, comprising:

  • a base unit, including one or more primary coils composed of a non-ferrite material and shaped as planar spiral coils, which are capable of generating an inductive energy for use in powering or charging multiple devices or batteries simultaneously;

    a receiver unit, including a receiver coil also composed of a non-ferrite material and shaped as a planar spiral coil, which is coupled to or incorporated into a portable device or battery, wherein the secondary coil receives energy inductively from the primary coil and uses it to charge or power the portable device or battery;

    means within the base unit for allowing a degree of position independence of the devices or batteries on the base unit and selectively activating the one or more primary coils; and

    wherein the base unit can simultaneously charge or power additional portable devices or batteries with additional secondary coils.

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