Position adjusters for seat backs

Claim 1

IN A SEAT ASSEMBLY HAVING A RELATIVELY FIXED SEAT MEMBER AND A BACK MEMBER MOUNTED ON SAID SEAT MEMBER FOR PIVOTAL MOVEMENT BETWEEN AN INCLINED POSITION AND AN UPRIGHT POSITION; MEANS FOR ADJUSTING THE POSITION OF SAID BACK MEMBER COMPRISING AN EXTENDABLE AND CONTRACTABLE CONNECTOR ASSEMBLY PIVOTALLY SECURED AT ITS OPPOSITE ENDS TO SAID SEAT MEMBER AND SAID BACK MEMBER RESPECTIVELY, AND ARRANGED TO BE EXTENDED WHEN SAID BACK MEMBER IS MOVED TO SAID INCLINED POSITION, SAID CONNECTOR ASSEMBLY COMPRISING A HOUSING CONNECTED TO ONE OF SAID MEMBERS, A ROD SLIDABLY RECEIVED IN SAID HOUSING AND CONNECTED TO THE OTHER MEMBER, AN OPERATING SPRING WHOLLY WITHIN SAID HOUSING BIASING SAID CONNECTING ASSEMBLY TO ITS CONTRACTED POSITION, A PLURALITY OF JUXTAPOSED CENTRALLY APERTURED LOCK PLATES CARRIED BY SAID HOUSING, SAID ROD EXTENDING THROUGH THE APERTURES THEREIN, AND SAID APERTURES BEING LARGER THAN SAID ROD WHEREBY SAID LOCK PLATES CAN BE TILTED RELATIVE TO SAID ROD, A FIXED FULCRUM RIGID WITH SAID HOUSING FOR PREVENTING THE MOVEMENT OF SAID LOCK PLATES TOWARD THE END OF SAID HOUSING FROM WHICH THE ROD PROTRUDES, SAID FULCRUM BEING OFFSET TO ONE SIDE OF THE AXIS OF SAID ROD, A LOCKING SPRING ENCIRCLING SAID ROD AND COMPRESSED BETWEEN A FIXED HOUSING PART AND THE SIDE OF SAID LOCK PLATES REMOTE FROM SAID FULCRUM, SAID SPRING BEING OPERATIVE TO TILT SAID LOCKPLATES AROUND SAID FULCRUM TO LOCK SAID ROD AND SAID HOUSING AGAINST EXTENSIBLE MOVEMENT TO LOCK SAID SEAT BACK MEMBER AGAINST MOVEMENT TOWRAD ITS INCLINED POSITION, SAID LOCKING PLATES BEING EFFECTIVE TO BRAKE, BUT NOT LOCK, SAID ROD AGAINST MOVEMENT IN A CONTRACTING DIRECTION WHEREBY SAID SEAT BACK MEMBER MAY BE MOVED TOWARD ITS UPRIGHT POSITION, A CAM MEMBER ROTATABLY SUPPORTED IN SAID HOUSING FOR SELECTIVE DIRECT ENGAGEMENT WITH SAID LOCKING PLATES ON THE SIDE OF SAID ROD OPPOSITE SAID FULCRUM, AND MEANS FOR ROTATING SAID CAM TO MOVE SAID LOCK PLATES AGAINST THE FORCE OF SAID LOCKING SPRING UNTIL SAID LOCK PLATES ARE SUBSTANTIALLY NORMAL TO SAID ROD WHEREBY SAID ROD MAY BE FREELY MOVED IN EITHER DIRECTION.