Drive balancing apparatus

Claim 1

A BALANCED APPARATUS COMPRISING: AN ELONGATE MEMBER HAVING A PREDETERMINED BALANCED ALIGNMENT; AT LEAST TWO FLUID ACTUATED BALANCING CYLINDERS, EACH HAVING A PISTON DIVIDING THE CYLINDER INTO A FRONT AND A REAR CHAMBER BOTH OF WHICH CAN SERVE AS INTAKE OR OUTPUT CHAMBERS, SAID CYLINDERS SPACED APART ALONG THE LENGTH OF SAID MEMBER; PISTON RODS CONNECTING EACH OF SAID PISTONS TO SAID MEMBER; MEANS PROVIDING FLUID COMMUNICATION BETWEEN THE FRONT CHAMBER OF ONE SAID CYLINDERS AND THE REAR CHAMBER OF ANOTHER OF SAID CYLINDERS; MEANS PROVIDING FLUID COMMUNICATION BETWEEN THE FRONT CHAMBER OF SAID OTHER CYLINDER AND THE REAR CHAMBER OF SAID ONE CYLINDER; MEANS FOR DETECTING AN IMBALANCE IN THE PREDETERMINED ALIGNEMENT OF SAID MEMBER; AND MEANS RESPONSIVE TO SAID DETECTING MEANS FOR PROVIDING FLUID COMMUNICATION FROM A FLUID PUMP SUPPLY LINE TO THE LAGGING SIDE OF THE LAGGING PISTON AND THE LEADING SIDE OF THE LEADING PISTON, AND FOR PROVIDING FLUID COMMUNICATION FROM THE LAGGING SIDE OF THE LEADING PISTON AND THE LEADING SIDE OF THE LAGGING PISTON TO A FLUID PUMP RETURN LINE TO APPLY CORRECTING FORCES TO SAID MEMBER TO CORRECT ALIGNMENT OF SAID MEMBER TO SAID PREDETERMINED ALIGNMENT.