| 摘要 |
PROBLEM TO BE SOLVED: To lighten a rear sprocket while maintaining its strength. SOLUTION: This rear sprocket 62c mountable to a rear hub of a bicycle comprises a sprocket gear 67c, a connection part 68c, and an indented part 71c. The sprocket gear 67c is formed on an outer periphery of the rear sprocket 62c. The connection part 68c is formed on an inner periphery, and is connected to the rear hub integrally rotatably. The annular indented part 71c is provided on at least one side between the sprocket gear 67c and the connection part 68c. COPYRIGHT: (C)2008,JPO&INPIT
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