A bicycle chain ring has a ring body having an inner diameter edge and an outer diameter edge. The outer diameter edge has a plurality of teeth for engaging a bicycle chain. The chain ring further includes a shared bolt hole through the ring body; a first set of three bolt holes through the ring body that are positioned in circumferentially spaced positions so that the shared bolt hole and the three bolt holes of the first set align to mate with the 4-bolt bicycle crank; and a second set of four bolt holes through the ring body that are positioned in circumferentially spaced positions so that the shared bolt hole and the four bolt holes of the second set align to mate with the 5-bolt bicycle crank.
BICYCLE CHAIN RING
2023-08-03
Patent
Electronic Resource
English