Improvements in transmission BELT PULLEY fun ciona without Lubrication

摘要

Transmission Belt Pulleys which works without Lubrication. Each of the Discs (31 and 32) forming the Pulley Throat is covered with a few layers of material of high Friction coefficient. The toothed Belt (29) is formed by one or several articulated Elements between the surface (423) in contact with the Pulley must be metal.