Patent ID: 11965583
Assignee: SERAPID FRANCE
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 2:
3. The device according to claim 1, wherein the radial dimension of the teeth (2) is chosen such that at least two front surfaces of said driving sprocket (1) are in simultaneous contact with the thrust chain (10) over an angle of at least 200° for a 5-tooth sprocket, at least 250° for a 6-tooth sprocket, at least 300° for a 7-tooth sprocket, at least 340° for an 8-tooth sprocket, and such that at least three front surfaces of said driving sprocket (1) are in simultaneous contact with the thrust chain (10) over an angle of at least 20° for a 9-tooth sprocket, at least 60° for a 10- or 11-tooth sprocket, at least 140° for a 12-tooth sprocket, at least 180° for a 13- to 15-tooth sprocket, at least 260° for a 16- to 24-tooth sprocket, and at least 360° for a 25- to 48-tooth sprocket.