06972543 is referenced by 99 patents and cites 5 patents.

An apparatus to charge a power supply inductively, with increased efficiency due to resonance, comprises an LC series resonance circuit formed by a capacitor and a primary inductive coil coupled in series with the capacitor, and a secondary inductive coil positioned such that power is inductively transferred from the primary coil to the secondary coil. The LC circuit has a natural resonant frequency, wherein the primary coil of the resonance circuit is coupled to receive power from a source oscillating at the natural resonant frequency. The secondary coil is further coupled to the power supply so that power induced in the secondary coil causes the power supply to be charged.

Title
Series resonant inductive charging circuit
Application Number
10/646386
Publication Number
6972543 (B1)
Application Date
August 21, 2003
Publication Date
December 6, 2005
Inventor
Brannon P Wells
San Jose
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Stryker Corporation
MI, US
IPC
H01M 010/46
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