公开(公告)号：US20180100561A1

公开(公告)日：2018-04-12

申请号：US15730060

申请日：2017-10-11

Applicant: TSUBAKIMOTO CHAIN CO.

Inventor： Kousuke Fujishima ,  Takeo Sasaki ,  Toshifumi Sato

IPC: F16G13/04

CPC classification number: F16G13/04 ,  F16G13/08

Abstract: Provided is a silent chain that enables adjustment of the stiffness and balance of stiffness between upper and lower sides of guide plates, and that prevents long pin failure resulting from deflection or torsional deformation while securing a sufficient area and strength for the portion contacting a side face of a sprocket. The guide plate has a lightening hole with an upper end positioned above a pitch line, and a lower end extending out beyond lines that connect intersections between inner side edges of front and rear pin fitting holes and the pitch line, and a midpoint of a lower end edge of the guide plate in a front to back direction. Outermost portions of the lightening hole in a longitudinal direction are formed within a range that does not go beyond a pair of vertical lines vertical to the pitch line passing through the intersections.