Patent ID: 7484604
Filing Date: 2009-02-03
Classification: F16H

Abstract:
1. Hydrokinetic coupling apparatus ( 1 ) for a motor vehicle, having a casing ( 30 ) provided with a transverse wall ( 3 ), able to be fixed with respect to rotation to a driving shaft, a turbine wheel ( 12 ) housed inside the casing ( 30 ) and fixed to a hub ( 14 ), able to be fixed with respect to rotation to a driven shaft, a first surface ( 1 ) defined by the transverse wall ( 3 ) of the casing ( 30 ), a lock-up clutch acting between said turbine wheel ( 12 ) and said transverse wall ( 3 ) and comprising a piston ( 4 ) defining a second surface ( 2 ) facing the first surface ( 1 ) for its disengageable connection to the transverse wall, wherein the piston ( 4 ) is connected to the casing ( 30 ) by tongues being axially elastic, and wherein the tongues are rigidly fixed to the piston and to the transverse wall thereby providing no degree of freedom between the tongues ( 23 ) and either the piston ( 4 ) and the transverse wall ( 3 ); wherein the tongues ( 23 ) are disposed radially opposite said second surface with respect to said piston ( 4 ), said tongues being circumferentially distributed in several sets of tongues ( 23 ) each including at least one tongue.