Air outlet nozzles for an air curtain device

Claim 1

IN A CONSTRUCTION OF THE TYPE DEFINING AN OPEN SIDE FOR ACCESS TO THE INTERIOR OF THE CONSTRUCTION AND INCLUDING AIR INLET MEANS AND A PLURALITY OF AIR NOZZLES EXTENDING IN SIDE-BY-SIDE RELATIONSHIP ACROSS OPPOSITE EDGES OF SAID OPEN SIDE, PASSAGES DEFINED IN SAID CONSTRUCTION COMMUNICATING EACH OF THE CORRESPONDING INLETS AND NOZZLES, AND CIRCULATING MEANS LOCATED IN AT LEAST ONE OF THE INNER ONES OF SAID PASSAGES FOR DRIVING AIR STREAMS THROUGH SAID PASSAGES AND OUT OF SAID NOZZLES FOR MOVEMENT ACROSS SAID OPEN SIDE IN THE FORM OF AIR CURTAINS BETWEEN CORRESPONDING INLETS AND NOZZLES, SAID AIR CURTAINS CROSSING SAID OPEN SIDE IN SIDE-BY-SIDE CONTACTING RELATIONSHIP, THE IMPROVEMENT IN SAID NOZZLES COMPRISING THIN SHEET MEMBER OVERLYING EACH OTHER, SAID SHEET MEMBERS DEFINING A PLURALITY OF ELEMENTS EXTENDING OUTWARDLY FROM THE FACES THEREOF, SAID ELEMENTS OPERATING TO MAINTAIN SAID SHEET MEMBERS IN SPACED-APART RELATIONSHIP WITH RESPECT TO EACH OTHER, SAID ELEMENTS EXTENDING OUTWARDLY A RELATIVELY SHORT DISTANCE AND BEING SPACED APART A DISTANCE SUBSTANTIALLY GREATER THAN THEIR OUTWARD EXTENT WHEREBY A PLURALITY OF CHANNELS WHICH ARE RELATIVELY LONG AND NARROW IN CROSS SECTION ARE FORMED BY SAID SHEET MEMBERS, SAID SHEET MEMBERS BEING ALIGNED LENGTHWISE OF THE OUTLET ENDS OF SAID PASSAGES WITH SAID ELEMENTS EXTENDING IN THE DIRECTION OF AIR FLOW WHEREBY SAID CHANNELS ARE ADAPTED TO CARRY THE AIR STREAMS IN SAID PASSAGES FOR MOVEMENT AS SAID AIR CURTAINS ACROSS SAID ACCESS OPENINGS.