Vehicle steering system and included compensating steering linkage

Claim 1

IN A VEHICLE HAVING STEERABLE WHEEL ASSEMBLIES WITHOUT A CONNECTING ROD COUPLING SAID ASSEMBLIES, AND WITH EACH WHEEL ASSEMBLY INCLUDING A WHEEL, A YOKE AND PIVOT SHAFT, APPARATUS FOR ANGULARLY ROTATING SAID WHEELS ON THEIR PIVOT SHAFTS TO EFFECT STEERING, SAID APPARATUS COMPRISING, A STEERING ARM ON THE STEERING PIVOT SHAFT OF EACH OF SAID STEERABLE WHEEL ASSEMBLIES, INDEPENDENT TWO-WAY POWER RESPONSIVE MEANS COUPLED TO EACH YOKE TO ENABLE ANGULAR ROTATION OF AN ASSOCIATED WHEEL ABOUT ITS PIVOT AXIS IN EITHER THE CLOCKWISE OR COUNTER-CLOCKWISE DIRECTION IN ACCORDANCE WITH THE DIRECTION AND EXTENT OF RESPONSE OF SAID POWER RESPONSIVE MEANS, EACH OF SAID TWO-WAY POWER-RESPONSIVE MEANS COMPRISING A POWER STEERING CYLINDER HAVING SERVO-VALVE MEANS INCLUDING A CONTROL ROD FOR ESTABLISHING THE VOLUME OF HYDRAULIC FLUID TO ITS ASSOCIATED CYLINDER AND THE DIRECTION OF FLOW OF SAID FLUID THROUGH SAID CYLINDER, AND MEANS FOR SIMULTANEOUSLY ACTUATING SAID CONTROL RODS TO DIFFERENT EXTENTS SUFFICIENT TO CAUSE SAID POWER RESPONSIVE MEANS TO EFFECT UNLIKE VOLUMES OF FLUID TO SAID POWER CYLINDERS AND IN SUCH MANNER AS TO PRODUCE ANGULAR ROTATION OF SAID STEERABLE WHEELS IN LIKE DIRECTION.