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Magnetic shield for use in a location sensing system

  • US 7,916,501 B2
  • Filed: 04/05/2010
  • Issued: 03/29/2011
  • Est. Priority Date: 12/28/2006
  • Status: Expired due to Fees
First Claim
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1. An apparatus, comprising:

  • a location sensing surface;

    a drive coil disposed about a periphery of the location sensing surface; and

    a magnetic shield plate disposed below the location sensing surface and the drive coil, the shield plate comprising a plurality of radially oriented slots originating at, and distributed about, a periphery of the shield plate,wherein at least some of the slots are curved.

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