Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 17, 2007
0Patent Application Number
102143140
Date Filed
August 8, 2002
0Patent Primary Examiner
Patent abstract
A hoop for a CVT belt including foreign matter existing in a nitrided hardened layer and surface of the hoop, the foreign matter comprises at least one of an oxide-type foreign matter, a nitride-type foreign matter, and a carbide-type foreign matter. The oxide-type foreign matter has a particle size of 25 μm or less, the nitride-type foreign matter and/or the carbide-type foreign matter have particle sizes of 17 μm or less.
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