Patent ID: 6059662
Filing Date: 2000-05-09
Classification: F16F

Abstract:
A torsion predamping device comprising first and second coaxial parts (10, 11) with loose meshing means (16) between said coaxial parts rotatingly in relation to one another in opposition to resilient predamping means wherein said first coaxial part comprises a hub (10) having engaging teeth (18) on an outer periphery thereof, while said second coaxial part comprises a hub disc (11) surrounding the hub (10), said hub disc (11) having engaged teeth (19) on an inner periphery thereof, engaged teeth (19), wherein said meshing means comprise said engaging teeth (18), said engaged teeth (19) and a crown insert (20) made of shock-absorbent material radially disposed between said engaging and engaged teeth, and wherein the resilient predamping means are housed in a predamping cassette disposed between the hub (10) and the hub disc (11), said predamping cassette being disposed in a first plane offset in relation to a second plane of said hub disc (11) said crown insert comprising a single piece member substantially circumscribing a common axis of said coaxial parts and being axially disposed and retained between two friction washers (22A, 22B) coaxial with said hub (10).