Patent ID: 9587709
Date: 2017-03-07
CPC Classifications: F16G

Claim:
1. A chain and sprocket drive system comprising: a sprocket; and an inverted tooth chain assembly configured to mesh with the sprocket, the inverted tooth chain assembly including at least two rows of links, each of the links having two teeth, a pair of outer flanks, first and second inner flanks, a crotch located between the first and second inner flanks, a first transition point arranged between the first inner flank and a first end region of the crotch, and a second transition point arranged between the second inner flank and a second end region of the crotch, wherein a crotch surface defined between the first transition point and the second transition point has a profile with a varying radius of curvature, the profile of the crotch surface has a smaller radius of curvature at the first and second end regions and a larger radius of curvature at a medial region between the first and second end regions, wherein a first inner flank surface is flat, and the first inner flank surface and a first crotch region surface are tangent to each other at the first transition point.