Patent ID: 7708126
Filing Date: 2010-05-04
Classification: F16H

Abstract:
1. A hydrokinetic coupling device, in particular for a motor vehicle, comprising: a casing formed from a first shell rotationally connecting a driving shaft and an impeller wheel; a turbine wheel fixed, by a connection without play, to a turbine hub which is able to be rotationally connected to a driven shaft; a clutch locking the coupling of the driving and driven shafts, comprising a piston, able to move axially in order to disengageably connect a second shell of the casing to the driven shaft, clamping at least one friction disc fixed firstly to the second casing shell by means of a first connecting piece and secondly to an input element of a damping device by means of a second connecting piece; the damping device comprising circumferentially acting elastic members interposed between rear and front guide washers forming the input element and a damper plate forming an output element and which is fixed to the driven shaft, the input and output elements being rotationally connected with a capacity for angular movement which is limited by stop members, and comprising a channel supplying the casing with fluid and a channel discharging the fluid, the damping device further comprising means for restricting the circulation of the fluid in a roughly radial direction, at least inside a front axial space of the damping device, situated between the front guide washer and the damper plate, so as to promote the circulation of fluid from the supply channel to the discharge channel through the lock-up clutch.