Patent ID: 6257376
Filing Date: 2001-07-10
Classification: F16D

Abstract:
A friction disk assembly comprising: first and second stator disks each having an outer thrust face and an inner friction face, and a rotor disk disposed between the stator disks and having two friction faces, the disks being made of thermostructural composite material at least in the wear portions thereof adjacent to the friction faces; first and second thrust structures respectively for the outer thrust faces of the stator disks; and an actuator device designed to act on at least one of the thrust structures to cause the disks to be urged together,the assembly being characterized in that:the first thrust structure is bell-shaped, having an end wall portion against which the first stator disk bears and a skirt portion which is connected to the end wall portion and which surrounds the disks, the bell-shaped structure having cooling means to encourage evacuation of the heat produced by friction between the disks;the second thrust structure has an annular plate-shaped thrust portion against which the second stator disk bears; andthe end wall portion of the bell-shaped structure and the thrust plate are provided with radial ribs or keys which co-operate with corresponding radial housings formed in the outer faces of the stator disks so as to prevent them from rotating relative to the thrust structures.