Seat track

Claim 1

IN A SEAT SUPPORTING STRUCTURE, A PAIR OF SPACED SUPPORTING TRACKS EMBODYING A PAIR OF SLIDES EACH HAVING A FIXED AND MOVABLE PORTION WITH THE FIXED PORTION HAVING A FLOOR ENGAGING PORTION AND SPACED ALIGNED EXTENDING FLANGES, SAID FLANGES BEING DISPOSED HORIZONTALLY ON THE FIXED PORTION OF ONE SLIDE AND VERTICALLY ON THE FIXED PORTION OF THE OTHER SLIDE TO PROVIDE VERTICAL AND HORIZONTAL STABILITY TO THE STRUCTURE, SAID MOVABLE PORTION HAVING A WEB PORTION AND CHANNEL PORTIONS PRESENTING TOWARD EACH OTHER, BLOCKS OF LOW FRICTION MATERIAL WITHIN THE CHANNEL PORTIONS LOCKED TO THE EDGES OF THE SPACED ALIGNED FLANGES, AN UPWARDLY FACING CHANNEL ELEMENT ON THE HORIZONTALLY DISPOSED SLIDE, A BELL CRANK PIVOTED TO THE FRONT OF SAID ELEMENT, A BELL CRANK PIVOTED TO THE REAR OF SAID ELEMENT, SAID BELL CRANKS HAVING A PAIR OF ARMS, DRIVE MEANS WITHIN SAID CHANNEL ELEMENT COMPRISING A LEAD SCREW AND A PAIR OF SOLENOID OPERATED NUTS THEREON, LINK MEANS CONNECTING ONE OF SAID NUTS TO AN ARM OF EACH BELL CRANK FOR SWINGING THE BELL CRANK IN A CLOCKWISE OR COUNTERCLOCKWISE DIRECTION DEPENDING UPON THE DIRECTION OF ROTATION OF THE LEAD SCREW, A SEAT SUPPORTING ELEMENT PIVOTED TO THE OTHER ARM OF SAID BELL CRANKS TO BE RAISED AND LOWERED THEREBY, BELL CRANKS PIVOTED DIRECTLY TO OPPOSITE ENDS OF THE VERTICALLY DISPOSED SLIDE OF THE SPACED TRACK, A TORSION BAR INTERCONNECTING THE PIVOTS OF THE FOR-