Magnetic shield for use in a location sensing system
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jul 29, 2010
app pub date -
Apr 5, 2010
filing date -
Dec 28, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An energy transfer apparatus with a magnetic shield is configured to magnetically couple energy from a fixed location to a mobile or moveable device within a field-activated space of the energy transfer apparatus. Apparatuses include a location sensing surface and a drive coil arranged in relation to a periphery of the location sensing surface. A magnetic shield plate is disposed below the location sensing surface and the drive coil. The shield plate includes a number of radially oriented slots originating at, and distributed about, a periphery of the shield plate.
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