Patent ID: 6948602

Claim:
Hydrokinetic coupling appliance, in particular for motor vehicles, comprising: a casing ( 12 ), intended to rotationally connect, about an axis X, a driving shaft and an impeller wheel, a turbine wheel ( 18 ) intended to be rotationally connected to a driven shaft ( 16 ) by means of a hub ( 14 ) and a transversely oriented plate ( 24 ) which extends radially outwards with respect to the hub, a clutch ( 28 ) for locking a coupling of the driving and driven shafts ( 16 ) comprising a piston ( 30 ) for disengageably connecting the turbine wheel ( 18 ) to a substantially transverse wall ( 20 ) of the casing ( 12 ) against which the piston ( 30 ) is forced for the locking of the coupling, and at least one friction stop ( 68 ) interposed axially between the turbine wheel ( 18 ) and the piston ( 30 ) to prevent contact between the piston ( 30 ) and an element facing the piston ( 30 ), said at least one friction stop being disposed radially beyond the external periphery ( 100 ) of the plate ( 24 ), wherein the friction stop ( 68 ) is carried by the piston, and wherein the friction stop ( 68 ) comprises an active friction part ( 68 A) and a passive part ( 68 P) comprising means ( 68 J) of connection with the element which carries the stop by cooperation of complementary shapes.