F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16H—GEARING
F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
F16H55/32—Friction members
F16H55/36—Pulleys
F16H55/48—Pulleys manufactured exclusively or in part of non-metallic material, e.g. plastics