A hydraulic coupling (38) for coupling a casing (46) and a pair of axle half shafts (40) of an auxiliary drive axle (36) of a vehicle drivetrain (22) includes a housing (44) for containing hydraulic fluid and the casing (44) rotatively mounted within the housing. A clutch (76) extends between the casing...http://www.google.fr/patents/US5964126?utm_source=gb-gplus-shareBrevet US5964126 - Hydraulic coupling for auxiliary drive axle of a vehicle drivetrain
Hydraulic coupling for auxiliary drive axle of a vehicle drivetrain