Multiple speed ratio hydrokinetic power transmission mechanism

Claim 1

IN A HYDROKINETIC POWER TRANSMISSION MECHANISM, A DUAL RANGE HYDROKINETIC TORQUE CONVERTER, A PAIR OF SIMPLE PLANETARY GEAR UNITS, EACH GEAR UNIT COMPRISING A RING GEAR, A SUN GEAR, A CARRIER AND PLANET PINIONS ROTATABLY JOURNALED UPON SAID CARRIER IN MESHING ENGAGEMENT WITH SAID SUN GEAR AND SAID RING GEAR, THE CARRIER OF A FIRST OF SAID GEAR UNITS AND THE RING GEAR OF A SECOND OF SAID GEAR UNITS BEING CONNECTED TO A DRIVEN MEMBER, MEANS FOR ANCHORING THE CARRIER OF SAID SECOND GEAR UNIT TO ACCOMMODATE TORQUE REACTION DURING LOW SPEED RATIO FORWARD DRIVE OPERATION AND REVERSE DRIVE OPERATION, SAID SUN GEARS BEING CONNECTED TOGETHER FOR ROTATION IN UNISON, SECOND BRAKE MEANS FOR ANCHORING SELECTIVELY SAID SUN GEARS, SAID HYDROKINETIC TORQUE CONVERTER MECHANISM COMPRISING A BLADED IMPELLER, A BLADED AUXILIARY IMPELLER, A TURBINE AND A STATOR SITUATED IN TOROIDAL FLUID FLOW RELATIONSHIP, SAID AUXILIARY IMPELLER BEING LOCATED ADJACENT THE FLOW EXIT REGION OF SAID IMPELLER, AUXILIARY IMPELLER CLUTCH MEANS FOR CLUTCHING SLECTIVELY SAID AUXILIARY IMPELLER TO SAID IMPELLER FOR JOINT ROTATION AS A COMMON IMPELLER ASSEMBLY, SELECTIVELY ENGAGEABLE CLUTCH MEANS FOR CONNECTING SAID SUN GEARS TO SAID AUXILIARY IMPELLER DURING HIGH SPEED RATIO OPERATION AND REVERSE DRIVE OPERATION, FORWARD DRIVE CLUTCH MEANS FOR CONNECTING SELECTIVELY THE RING GEAR OF SAID FIRST PLANETARY GEAR UNIT TO SAID TURBINE DURING FORWARD DRIVE OPERATION, AND AN OVERRUNNING COUPLING MEANS FOR ESTABLISHING A DRIVING CONNECTION BETWEEN SAID TURBINE AND SAID AUXILIARY IMPELLER DURING REVERSE DIRVE OPERATION WHEN SAID FIRST MENTIONED CLUTCH MEANS IS DISENGAGED.