Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 30, 2007
Patent Application Number
10977522
Date Filed
October 28, 2004
Patent Primary Examiner
Patent abstract
A pulley unit comprises a pulley, a shaft relatively rotatable with the pulley and concentrically arranged inner side of the pulley, a one-way clutch interposed in an annular space between the pulley and the shaft, and a ball bearing arranged adjacent to the one-way clutch in an axial direction in the annular space. The ball bearing has an inner ring and an outer ring. Raceway curvatures of the inner and outer rings of the ball bearing are set to not less than 50.5% and not more than 52.0%.
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