Multiple fluid operated clutches

Claim 1

IN A POWER TRANSMISION MECHANISM HAVING A DRIVING MEMBER AND A DRIVEN MEMBER, MEANS DEFINING PLURAL TORQUE DELIVERY PATHS BETWEEN SAID DRIVING MEMBER AND SAID DRIVEN MEMBER, SAID PATHS BEING DEFINED IN PART BY A SELECTIVELY ENGAGEABLE FRICTION DISC CLUTCH, SAID CLUTCH COMPRISING A FIRST ROTARY CLUTCH MEMBER, A SECOND ROTARY CLUTCH MEMBER, SAID FIRST AND SECOND CLUTCH MEMBERS BEING ADAPTED TO CARRY FRICTION DISCS IN INTERDIGITAL RELATIONSHIP, SAID FIRST CLUTCH MEMBER DEFINING AN ANNULAR CYLINDER, AN ANNULAR PISTON DISPOSED IN SID CYLINDER AND COOPERATING THEREWITH TO DEFINE AN ANNULAR FLUID PRESSURE CAVITY, SAID CLUTCH MEMBERS BEING ADAPTED TO ROTATE ABOUT A COMMON AXIS, FLUID PASSAGE MEANS FOR DISTRIBUTING CLUTCH ACTUATING FLUID PREDDURE TO SAID CHAMBER, AN ANNULAR CAVITY DEFINED BY SAID PISTON, A CLUTCH PRESSURE DISC CARRIED BY SAID PISTON AT A LOCATION THAT IS DISPOSED RADIALLY OUTWARD FROM SAID PRESSURE CAVITY, SAID PRESSURE DISC BEING ADAPTED TO APPLY CLUTCH ENGAGING FORCE TO SAID FRICTION DISCS, AN ANNULAR RING SITUATED IN SAID PISTON CAVITY AND COOPERATING