Rack construction for dishwashing machine

Claim 1

AN IMPROVED UPPER RACK SYSTEM FOR A DISHWASHING MACHINE HAVING A TANK DEFINING A CLEANING CHAMBER AND ADAPTED TO ACCOMMODATE A LARGE CAPACITY OF TABLEWARE ARTICLES AS WELL AS LARGE ARTICLES SUCH AS DEEP BOWLS, POTS AND PANS AND TALL GLASSES, SAID RACK SYSTEM COMPRISING A RACK HAVING AN OPEN MESH BOTTOM AND FRAME THROUGH WHICH A CLEANSING SPRAY CAN PASS, SAID RACK INCLUDING A SERIES OF GENERALLY PARALLEL SPACED LONGITUDINAL MEMBERS EXTENDING FROM FRONT TO BACK AND HAVING CONNECTED THERETO A SERIES OF GENERALLY PARALLEL SPACED LATERAL MEMBERS EXTENDING ACROSS SAID LONGITUDINAL MEMBERS, A MEANS CONNECTED TO A PLURALITY OF SAID MEMBERS TO DEFINE A SUPPORT FOR THE TABLEWARE ARTICLES, A TRACK SPACED BETWEEN EACH SIDE OF SAID FRAME AND SIDE WALLS OF A TANK, MEANS ADAPTED TO MOUNT SAID TRACKS TO THE SIDE WALLS OF A TANK AT A PREDETERMINED ELEVATION PROVIDING FOR HORIZONTAL MOVEMENT INTO AND OUT OF THE CHAMBER, AND MEANS ON SAID TRACKS FOR SUPPORTING SAID FRAME AT DIFFERENT ELEVATIONS FOR ACCOMMODATING THE LARGE ARTICLES.