Patent ID: 9651113
Date: 2017-05-16
CPC Classifications: F16G

Claim:
1. A silent chain in which a guide row made up of a pair of left and right guide plates and a middle plate disposed between the pair of left and right guide plates and a non-guide row made up of a plurality of inner plates are alternately connected in a chain longitudinal direction by a pair of locker pins to be inserted into a pair of front and rear pin holes provided on the middle plate and the inner plates, wherein the pair of front and rear pin holes of at least one of the middle plate and the inner plates has an outer peripheral side straight portion and an inner peripheral side straight portion, the outer peripheral side straight portion is formed in a flat surface shape that restricts, when being bent in a forward direction, movement of the locker pins toward an outer circumferential side of the bending, the inner peripheral side straight portion is formed in a flat surface shape that restricts, when being bent in a backward direction, movement of the locker pins toward an inner circumferential side of the bending, and the outer peripheral side straight portion and the inner peripheral side straight portion are formed parallel to each other.