Anti-slip sheaves for continuously variable transmissions

摘要

A sheave for use in a continuously variable transmission comprises a truncated, substantially conical portion having an inner radius, an outer radius and a contact surface extending between the inner radius and the outer radius. The contact surface of the sheave may include a plurality of concentric step features such that the contact surface is graduated between the inner radius and the outer radius. Each step feature may include a rise portion and a pitch portion. The rise portion of each step feature and the pitch portion of each step feature may extend in a circumferential direction on the contact surface.