Patent ID: 6112510
Filing Date: 2000-09-05
Classification: F16G

Abstract:
A silent-chain transmission apparatus comprising a silent chain and a sprocket, said silent chain and said sprocket having a working pitch line represented by a part of a working pitch circle in a state in which complete meshing engagement is established between said silent chain and said sprocket, wherein,said silent chain is formed of a plurality of plates, each having a pair of link teeth, each of said link teeth having an inner crotch, an outer flank, and a tooth tip toward which said inner crotch and said outer link converge, said plates being connected by means of connection pins;said sprocket has sprocket teeth that come into meshing engagement with the link teeth of said silent chain, each of said sprocket teeth having a tooth flank;each of the inner crotches has a projection formed thereon and having a straightly profiled portion extending from said working pitch line toward said tooth tip; andsaid straightly profiled portion of said projection of each inner crotch of one of said plates comes into contact with said tooth flank of each said sprocket tooth at a position offset toward said tooth tip with respect to said working pitch line before said outer flank of a preceding plate comes into meshing engagement with the same tooth flank at a position on said working pitch line.