Regenerative steering

Claim 1

A DRIVE TRANSMISSION TO AFFORD STEERING CONTROL FOR A TRACTION VEHICLE HAVING RIGHT AND LEFT ENDLESS TRACKS COMPRISING DRIVE MEANS, A SEPARATE DRIVEN SHAFT FOR DRIVING EACH ENDLESS TRACK, SEPARATE PLANETARY GEAR TRANSMISSION SYSTEMS CONNECTING THE DRIVE MEANS WITH EACH OF THE DRIVEN SHAFTS, A PAIR OF REVERSIBLE TORQUE REACTION SHAFTS, EACH MECHANICALLY COUPLED TO BUT ONE OF THE PLANETARY GEAR TRANSMISSION SYSTEMS TO INFLUENCE THE DRIVE TRANSMITTED TO THE CORRESPONDING DRIVEN SHAFT, WHEREBY ONE TORQUE REACTION SHAFT OPERATES INDEPENDENTLY OF THE OTHER, AN ANGULARLY ADJUSTABLE, VARIABLE STROKE, MULTI-PISTON HYDRAULIC UNIT OPERATIVELY CONNECTED IN DRIVE-TRANSMITTING RELATIONSHIP WITH EACH OF SAID TORQUE REACTION SHAFTS, THE ANGULARLY ADJUSTED POSITION OF THE HYDRAULIC UNIT REGULATING THE STROKE OF THE PISTONS THEREOF, A HYDRAULIC COUPLING CONNECTING THE HYDRAULIC UNIT ASSOCIATED WITH ONE OF THE TORQUE REACTION SHAFTS WITH THE HYDRAULIC UNIT ASSOCIATED WITH THE OTHER OF THE TORQUE REACTION SHAFTS, THE HYDRAULIC UNITS PERMITTING FREE ROTATION OF THEIR RESPECTIVE TORQUE REACTION SHAFTS IN ONE ADJUSTED POSITION THEREOF, LOCKING THE TORQUE REACTION SHAFTS WHEN BOTH HYDRAULIC UNITS ARE IN ANOTHER ADJUSTED POSITION, AND DRIVING THEIR RESPECTIVE TORQUE REACTION SHAFTS IN ONE DIRECTION OR THE OTHER WHEN THEY ARE IN DIFFERENT ANGULARLY ADJUSTED POSITIONS, AND MEANS TO ADJUST THE HYDRAULIC UNITS TO THE SAME OR DIFFERENT ANGULAR POSITIONS.