Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 29, 2009
Patent Application Number
11700928
Date Filed
February 1, 2007
Patent Primary Examiner
Patent abstract
Bonding geometries are disclosed between permanent magnets and steel portions of magnetic assemblies. When employed in permanent magnet motors, this particular bonding construction reduces or even eliminates the loosening of permanent magnets inside of electric motors. The bonding geometry consists of interlocking protrusions and voids at the bonding interface. A bonding agent is employed that may be filled with finely divided iron or other magnetic material. The result is a strong bond between the permanent magnet and steel assembly portions with virtually no loss in overall magnetic properties.
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