Positive drive differential

Claim 1

A DIFFERENTIAL DRIVE COMPRISING A DIFFERENTIAL CARRIER, A RING GEAR CARRIER BY SAID CARRIER, A DRIVING PINION IN DRIVING ENGAGEMENT WITH SAID RING GEAR, SAID PINION BEING CONNECTED TO A DRIVING MEMBER, A PAIR OF DIFFERENTIAL SIDE GEARS ROTATABLY SUPPORTED BY SAID CARRIER FOR ROTATION ABOUT AN AXIS THAT IS TRANSVERSE WITH RESPECT TO THE AXIS OF SAID DRIVING PINION, A PAIR OF DIFFERENTIAL IDLER GEARS IN DRIVING ENGAGEMENT WITH SAID SIDE GEARS, A DRIVING CONNECTION BETWEEN SAID IDLER GEARS AND SAID CARRIER, MEANS FOR PROVIDING A DRIVING CONNECTION BETWEEN EACH SIDE GEAR AND SEPARATE COAXIAL AXLE SHAFTS, FLUID CLUTCH MEANS FOR ESTABLISHING A VISCOUS FLUID CONNECTION BETWEEN ONE DIFFERENTIAL SIDE GEAR AND SAID CARRIER AND COMPRISING A FIRST CLUTCH ELEMENT CONNECTED DRIVABLY TO SAID DIFFERENTIAL SIDE GEAR AND A SECOND CLUTCH ELEMENT CONNECTED TO SAID CARRIER, SAID SECOND CLUTCH ELEMENT HAVING FORMED THEREON A CLUTCH DISC, ANOTHER CLUTCH DISC CARRIED BY SAID FIRST CLUTCH ELEMENT, AND CLUTCH HOUSING MEANS ENCLOSING SAID CLUTCH DISCS AND DEFINING A SEALED CLUTCH CHAMBER, SAID CLUTCH CHAMBER ACCOMMODATING A HIGHLY VISCOUS FLUID WHEREBY TORQUE MAY BE TRANSMITTED FROM SID CARRIER TO SAID ONE SIDE GEAR THROUGH THE MEDIUM OF SHEAR STRESSES IN SAID FLUID THEREBY ESTABLISHING A REACTION TORQUE DELIVERY PATH THROUGH SAID FLUID THAT IS PARALLEL TO THE DRIVING TORQUE DELIVERY PATH DEFINED BY THE DRIVING CONNECTION EXTENDING BETWEEN SAID RING GEAR NAD SAID AXLE SHAFTS THROUGH SAID ONE GEAR, SAID REACTION TORQUE DELIVERY PATH BEING EFFECTIVE TO DELIVERY TORQUE ONLY WHEN SAID SIDE GEARS ROTATE RELATIVE TO SAID CARRIER ABOUT THEIR RESPECTIVE AXES.