Multiple speed ratio power transmission mechanism with fully synchronized speed ratio shifts

Claim 1

IN A POWER TRANSMISSION MECHANISM FOR DELIVERING DRIVING TORQUE FROM A DRIVING SHAFT TO A POWER OUTPUT SHAFT, A POWER INPUT GEAR CONNECTED TO SAID DRIVING SHAFT, A PLURALITY OF POWER OUTPUT GEARS ROTATABLY SUPPORTED ON SAID POWER OUTPUT SHAFT, A CLUSTER GEAR ASSEMBLY MOUNTED FOR ROTATION ABOUT AN AXIS THAT IS PARALLEL TO THE AXIS OF SAID POWER OUTPUT SHAFT, SAID CLUSTER GEAR AS SEMBLY INCLUDING A PLURALITY OF GEAR ELEMENTS ONE OF WHICH ENGAGES SAID POWER INPUT GEAR WHILE EACH OF THE OTHERS ENGAGES A SEPARATE ONE OF SAID POWER OUTPUT GEARS, A FIRST SYNCHRONIZER CLUTCH MEANS FOR CONNECTING SELECTIVELY A FIRST AND A SECOND POWER OUTPUT GEAR TO SAID OUTPUT SHAFT, A SECOND SYNCHRONIZER CLUTCH MEANS FOR CONNECTING SELECTIVELY ANOTHER POWER OUTPUT GEAR AND SAID POWER IMPUT GEAR TO SAID POWER OUTPUT SHAFT, A REVERSE PINION GEAR ASSEMBLY COMPRISING A PAIR OF GEAR ELEMENTS ROTATABLY SUPPORTED BY ROTATION ABOUT AND AXIS THAT IS SPACED FROM AND PARALLEL TO THE AXES OF SAID POWER OUTPUT SHAFT AND SAID CLUSTER GEAR ASSEMBLY, A FIRST GEAR ELEMENT OF SAID REVERSE PINION GEAR ASSEMBLY BEING ENGAGEABLE CONTINUOUSLY WITH ONE GEAR ELEMENTS OF SAID REVERSE PINION GEAR SEMBLY, THE GEAR ELEMENTS OF SAID REVERSE PINION GEAR ASSEMBLY, BEING CONNECTED TOGETHER FOR ROTATION IN UNISON, THE CONNECTION BETWEEN SAID REVERSE PINION GEAR ELEMENTS ACCOMODATING AXIAL SLIDING MOVEMENT OF THE SECOND REVERSE PINION GEAR ELEMENT WITH RESPECT TO THE FIRST REVERSE PINION GEAR ELEMENT, AND A REVERSE GEAR CONNECTED TO SAID POWER OUTPUT SHAFT, SAID REVERSE GEAR SAID SECOND REVERSE PINION GEAR ELEMENT BEING ENGAGEABLE WHEN THE LATTER ASSUMES ONE AXIAL POSITION TO ESTABLISH A REVERSE POWER FLOW PATH WHEN SAID FIRST SYNCHRONIZER CLUTCH MEANS ASSUMES A NEUTRAL CONDITION.