Power steering mechanism

Claim 1

IN A POWER STEERING MECHANISM INCLUDING AN INPUT MEMBER, AN OUTPUT MEMBER, AND A FLUID MOTOR OPERATIVELY CONNECTED TO SAID OUTPUT MEMBER, THE COMBINATION WITHIN A HOUSING OF A WORM HAVING GROOVE MEANS FORMED THEREON, FOLLOWER MEANS OPERATIVELY CONNECTED TO SAID OUTPUT MEMBER AND ENGAGING SAID GROOVE MEANS, A PAIR OF RELATIVELY ROTATABLE TELESCOPED TUBULAR ELEMENTS THROUGH WHICH FLUID FLOW TO AND FROM SAID MOTOR IS CONTROLLED, ONE OF WHICH IS A PART OF SAID INPUT MEMBER AND THE OTHER OF WHICH IS CONNECTED TO SAID WORM, A TORSION BAR HAVING TWO RADIALLY EXTENDING ARMS LOCATED BETWEEN THE ENDS THEREOF FOR SEPARATING SAID TORSION BAR INTO AN UPPER TORSIONALLY PRELOADED SECTION AND A LOWER TORSIONALLY PRELOADED SECTION, SAID TORSION BAR HAVING THE UPPER END THEREOF RIGIDLY CONNECTED TO SAID INPUT MEMBER AND THE LOWER END THEREOF RIGIDLY CONNECTED TO SAID WORM, A BIFURCATED END PORTION FORMED ON SAID INPUT MEMBER, SAID RADIALLY EXTENDING ARMS OF SAID TORSION BAR BEING LOCATED BETWEEN THE BIFURCATIONS OF SAID END PORTIONS, ONE OF SAID BIFURCATIONS BEING CONTINUOUSLY IN CONTACT WITH ONE OF SAID ARMS AND THE OTHER OF SAID BIFURCATIONS BEING CONTINUOUSLY IN CONTACT WITH THE OTHER OF SAID ARMS FOR CAUSING THE LOWER SECTION OF SAID TORSION BAR TO TWIST AND INCREASE THE TORSIONAL REACTION THEREOF WHEN SAID INPUT MEMBER IS ROTATED IN ONE DIRECTION, AND A PAIR OF OPPOSITELY DISPOSED PINS RIGIDLY CONNECTED TO SAID WORM AND LOCATED BETWEEN SAID RADIALLY EXTENDING ARM AND SAID BIFURCATIONS, ONE OF SAID PINS BEING CONTINUOUSLY IN CONTACT WITH ONE OF SAID ARMS AND THE OTHER OF SAID PINS BEING CONTINUOUSLY IN CONTACT WITH THE OTHER OF SAID ARMS FOR CAUSING THE UPPER SECTION OF SAID TORSION BAR TO TWIST AND INCREASE THE TORSIONAL REACTION THEREOF WHEN SAID INPUT MEMBER IS ROTATED IN THE OPPOSITE DIRECTION.