Spectator seating structure

Claim 1

A SEATING ARRANGEMENT FOR USE IN STADIUMS, THEATERS AND THE LIKE COMPRISING: (A) A PLURALITY OF INDIVIDUAL SEATING UNITS, EACH OF SAID SEATING UNITS INCLUDING A SUPPORTING POST WITH MEANS ON SAID POST FOR MOUNTING THE SEATING UNIT TO A FLOOR STRUCTURE, (B) ADJUSTABLE COOPERATIVE MEANS ON EACH OF SAID SEATING UNITS TO INTERCONNECT EACH OF SAID UNITS WITH THE ADJOINING UNITS TO FORM A SEATING ARRANGEMENT, (C) EACH OF THE SEATING UNITS INCLUDING A BACK REST, SAID BACK REST OF EACH OF SAID SEATING UNITS HAVING OPPOSED SIDE PORTIONS AND WHEREIN THE ADJUSTABLE COOPERATIVE MEANS IS CONNECTED TO EACH OF THE SIDE PORTIONS OF THE BACK RESTS OF THE ADJOINING SEATING UNITS, AND (D) EACH OF THE SIDE PORTIONS OF THE BACK REST OF EACH OF THE INDIVIDUAL SEATING UNITS DEFINING ADJUSTMENT SLOTS EXTENDING INWARDLY OF SAID SIDE PORTIONS, SAID INTERCONNECTING MEANS INCLUDING MEANS MOVABLE IN SAID ADJUSTMENT SLOTS OF EACH OF ADJOINING SEATING UNITS, SAID MEANS BEING RETAINABLE AT SELECTED POSITIONS ALONG SAID ADJUSTMENT SLOTS TO INTERCONNECT THE ADJOINING SEATING UNITS WHEREBY THE SEATING UNITS MAY BE SPACED AT VARYING SELECTED INTERVALS.