Patent ID: 9243684
Filing Date: 2016-01-26
CPC Classification: F16G

Claim Text:
1. A chain formed by a plurality of inner links and outer links alternately and pivotally coupled together in a longitudinal direction, and placed over a sprocket, the inner links each being formed as a link unit having a pair of connecting pin portions spaced apart in the longitudinal direction and a pair of plate portions coupling the pair of connecting pin portions and spaced apart in a width direction, the plate portions coupling together the pair of connecting pin portions at a pair of joint parts where the pair of connecting pin portions and the plate portions are inseparably joined together, the outer links each being formed by a pair of link plates, the pair of link plates sandwiching the pair of plate portions in the width direction and being pivotally coupled to a pair of support portions of the connecting pin portions, the chain further having: a stopper portion located within a range in the width direction between an adjoining plate portion and an adjoining link plate that are the plate portion and the link plate adjoining each other in the width direction to establish a restriction state of restricting the adjoining link plate from coming closer to the adjoining plate portion, and a gap in the width direction being formed between facing portions of the adjoining plate portion and the adjoining link plate facing each other in the width direction in the restriction state.