Steerable arrangement for a vehicle having four driven wheels

Claim 1

A STEERABLE VEHICLE COMPRISING, A FORWARD FRAME AND A REAR FRAME, EACH OF SAID FRAMES HAVING A WHEEL DRIVING AXLE OF THE NON-STEERABLE TYPE SECURED THEREON, A VERTICAL STEERING AXIS DEFINED BY UPPER AND LOWER PIVOTS INTEGRAL WITH THE REAR END OF THE FORWARD FRAME AND ALIGNED WITH THE LONGITUDINAL AXIS THEREOF, THE REAR FRAME HAVING TAPERED FORWARD UPPER AND LOWER EXTREMITIES, A SLEEVE TYPE PIVOT MEANS SECURED TO THE LOWER VERTICAL PIVOT BEING POSITIONED NORMAL THERETO AND CONNECTED TO THE LOWER TAPERED FORWARD EXTREMITY OF THE REAR FRAME, ADDITIONAL PIVOT MEANS INCLUDED WITHIN THE REAR FRAME REMOTE FROM THE UPPER TAPERED EXTREMITY AND ALIGNED WITH THE LONGITUDINAL AXIS OF THE REAR FRAME, DRAG LINK MEANS CONNECTING THE ADDITIONAL PIVOT MEANS AND THE UPPER VERTICAL PIVOT OF THE STEERING AXIS, A SINGLE STEERING CYLINDER INCLUDING A SHAFT, A UNIVERSAL TYPE CONNECTION MEANS MOUNTING ONE EXTREMITY OF THE CYLINDERR TO ONE OF SAID FRAMES AND THE EXTREMITY OF SAID SHAFT TO THE OTHER OF SAID FRAMES AND WITH SAID UNIVERSAL CONNECTION MEANS BEING MOUNTED ON SAID FRAMES TO ONE SIDE OF THE LONGITUDINAL AXIS OF SAID FRAMES SUCH THAT RELATIVE MOVEMENT OF THE CYLINDER AND SHAFT WILL CAUSE RELATIVE MOVEMENT OF THE FRAMES ABOUT THE STEERING AXIS, DISPLACEMENT OF EITHER OF THE FRAMES ABOUT THEIR RESPECTIVE LONGITUDINAL AXIS BEING OPERATIVE TO CAUSE SAID DRUG LINK TO PIVOT ON ITS VERTICAL PIVOT AND ADDITIONAL PIVOT MEANS AS SAID FRAMES ROTATE RELATIVE THROUGH THE NORMAL SLEEVE TYPE PIVOT MEANS, AND YOKE MEANS INCLUDED IN THE UPPER TAPERED EXTREMITY OF THE REAR FRAME AND PARTIALLY SURROUNDING THE DRAG LINK TO LIMIT MOVEMENT OF THE DRAG LINK ON ITS PIVOT MEANS.