Renovated bicycle chain
 A renovated bicycle chain includes generally an inner chain plate and an outer chain plate. The inner chain plate includes a pair of arcuate grooves at inner end of a pair of pin holes, respectively adopted to receive a corresponding arcuate protrusions extending from the inner end of a pin hole of the outer chain plate. Both inner and outer chain plates have an aperture at center with an angular groove adopted to accommodate the outer edge when inner and outer chain plates are connected. Luminescent emission diodes also may be applied to the chain plates as a warning system. 
Yaban Chain Ind'l Co., Ltd.
F
F16G
inventional
Wen B.
Wang