Magnetic shield for use in a location sensing system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7787259
APP PUB NO 20080158848A1
SERIAL NO

11617352

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 ST PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Free, M Benton Saint Paul, US 16 548
Geaghan, Bernard O Salem, US 83 6870
Hauck, Karl P Pembroke, US 9 1400
Libbey, Albert H Eliot, US 6 292
Weaver, Billy Lee Eagan, US 7 354

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