Patent ID: 6378676
Filing Date: 2002-04-30
Classification: F16H

Abstract:
A hydrokinetic coupling apparatus, including a turbine wheel (1) which is capable of being coupled fixedly to a driven shaft and which is mounted within an impulse wheel casing (2), with which it is able to cooperate for the hydrokinetic transmission of a torque to the said driven shaft from a driving shaft which is able to be coupled fixedly to the said impulse wheel, the said apparatus further including a clutch device having a clutch disc (5), being a so-called lock-up clutch, adapted to lock or unlock an elastic coupling between the said turbine wheel (1) and a radial wall (2a) of the said casing, through a set of circumferentially acting helical damping springs (22) which are held in place in arched seatings (24) which are fixed with respect to the said turbine wheel (1) and which are open in an axial direction towards the said radial wall (2a), characterised in that the said arched seatings (24) are formed directly in a thickened peripheral portion (25) of the turbine wheel (1) made of mouldable material, and said thickened peripheral portion is disposed radially outside a hub provided for connection to said driven shaft, opposed radial ends (26) of the said seatings (24) serving as abutments for the corresponding ends of the said springs (22).