BigPatents India

A clutch friction wheel for a dry friction clutch, more particularly for a motor vehicle, the friction wheel having two friction crowns, wherein the said friction crowns include means for generating an air pressure force under the effect or rotation of the clutch friction wheel, the said air pressure force generating means comprising grooves formed on the face of each of the friction crowns, which are arranged to make contact with, respectively, a reaction plate and a pressure plate of the clutch of which the friction wheel forms part characterized in that the said grooves comprise a circumferential groove (20) and a plurality of radial grooves (30) open at the inner periphery (13) of the friction crown and in communication with the circumferential groove. No. of Pages : 17 No. of Claims : 26