Systems for contactless power transfer
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United States of America Patent
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-
May 8, 2012
Grant Date -
Jun 16, 2011
app pub date -
Oct 28, 2010
filing date -
Oct 28, 2010
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system includes a first coil mechanically coupled to a first component and electrically coupled to a power source. The system further includes a second coil mechanically coupled to a second component and configured to receive power from the first coil via a magnetic field. At least one of the first and second components includes a rotatable component. The system also includes a field focusing element disposed between the first coil and the second coil and configured as a self resonant coil having a standing wave current distribution to focus the magnetic field onto the second coil and enhance the coupling between the first coil and the second coil.
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