Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Nobukatsu Hara0
Date of Patent
March 17, 2020
0Patent Application Number
156195480
Date Filed
June 12, 2017
0Patent Citations
Patent Primary Examiner
Patent abstract
A bicycle chain device that includes a mounting bracket configured to be affixed to a bicycle. The bicycle has a solitary bicycle front sprocket. A cage is movably mounted to the mounting bracket so that the cage is positioned adjacent to the front sprocket. The cage has a chain-receiving slot, through which a bicycle chain passes. The cage is configured to move in accordance with a shifting operation of a bicycle rear derailleur to maintain alignment with a chain to prevent the chain from falling off the sprocket.
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