Transmission device comprises pulley with trapezoidal groove and transmission belt with trapezoidal cross-section which has notches in its inner surface which cooperate with teeth on second pulley

摘要

The transmission device comprises a pulley (1) with a trapezoidal groove and a transmission belt (5) with a trapezoidal cross-section. The belt has notches in its inner surface which cooperate with teeth (4) on a second pulley (3).