Manual six-way seat adjuster

Claim 1

IN COMBINATION WITH A VEHICLE SEAT, AN ADJUSTER UNIT FOR ADJUSTING SAID VEHICLE SEAT RELATIVE TO A VEHICLE FLOOR, AN ADJUSTING MECHANISM FOR VERTICALLY ADJUSTING ONE EDGE OF SAID SEAT TO A MULTIPLICITY OF POSITIONS, SAID MECHANISM INCLUDING A FIRST SUPPORT MEANS SECURED TO SAID VEHICLE FLOOR, A SECOND SUPPORT MEANS SECURED TO SAID SEAT, A LIFT INDEX HAVING A WEB SECTION AND TWO PARALLEL DEPENDING ARMS, SAID LIFT INDEX PIVOTALLY INTERCONNECTING SAID FIRST SUPPORT MEANS AND SAID SECOND SUPPORT MEANS FOR LIMITED VERTICAL MOVEMENT THEREBETWEEN, SAID ARMS HAVING VARIABLY SPACED FINGERS ALONG PARALLEL ADJACENT EDGES OF SAID ARMS, ONE FINGER ON EACH ARM BEING IN THE SAME PLANE AS A FINGER ON THE OTHER ARM FOR LIMITING MOVEMENT OF SAID LIFT INDEX, ALL OTHER FINGERS ON EACH ARM BEING STAGGERED SUCH THAT NO FINGER ON ONE ARM IS IN THE SAME PLANE AS A FINGER ON THE OTHER ARM, A LOCK BAR SLIDABLY SUPPORTED ON ONE OF SAID SUPPORT MEANS FOR SLIDING MOVEMENT INTO AND FROM ENGAGEMENT WITH SAID FINGERS, SAID LOCK BAR ENGAGING SAID FINGERS WHEN IN A LOCKED POSITION FOR SECURING SAID INDEX FROM MOVEMENT, CONTROL MEANS FOR MOVING SAID LOCK BAR IN OPPOSITE DIRECTIONS FROM SAID LOCKED POSITION, SAID LOCK BAR MOVING FROM ENGAGEMENT WITH THE FINGERS OF ONE ARM WHEN MOVED IN ONE DIRECTION FROM SAID LOCKED POSITION AND MOVING FROM ENGAGEMENT WITH THE FINGERS OF THE OTHER ARM WHEN MOVED IN THE OPPOSITE DIRECTION FROM SAID LOCKED POSITION, SAID FINGERS BEING SPACED ON SAID ARMS FOR PERMITTING VERTICAL MOVEMENT OF SAID SECOND SUPPORT MEANS BETWEEN ONLY TWO ADJACENT VERTICAL POSITIONS FOR ADJUSTMENT FOR A FIRST MOVEMENT OF SAID LOCK BAR FROM SAID LOCKED POSITION SUCH THAT SAID LOCK BAR MUST BE RETURNED TO SAID LOCKED POSITION FROM THE FIRST POSITION OF MOVEMENT AWAY FROM SAID LOCKED POSITION AND THEN MOVED IN A SECOND DIRECTION OPPOSITE FROM SAID FIRST DIRECTION OF MOVEMENT OF SAID LOCK BAR TO PERMIT VERTICAL MOVEMENT OF SAID SECOND SUPPORT MEANS IN THE SAME DIRECTION AFTER EACH STEP OF VERTICAL ADJUSTMENT.