Gas barriers for an article conveyor

Claim 1

A FREEZER SYSTEM COMPRISING AN ELONGATED FREEZING CHAMBER HAVING INPUT AND EXIT OPENINGS AT THE ENDS THEREOF, A CONVEYOR ASSOCIATED WITH SAID FREEZING CHAMBER AND INCLUDING A SUBSTANTIALLY HORIZONTAL BELT SPAN PASSING THERETHROUGH, A GASEOUS COOLING MEDIUM IN SAID FREEZING CHAMBER, AN INPUT ANTE-CHAMBER CONNECTED TO THE INPUT END OF SAID FREEZING CHAMBER AND COMMUNICATING WITH SAID INPUT OPENING, SAID INPUT ANTE-CHAMBER BEING FORMED WITH AN INLET OPENING IN ALIGNMENT WITH SAID INPUT OPENING, AN EXIT ANTE-CHAMBER CONNECTED TO THE EXIT END OF SAID FREEZER CHAMBER AND COMMUNICATING WITH SAID EXIT OPENING, SAID EXIT ANTE-CHAMBER BEING FORMED WITH AN OUTLET OPENING IN ALIGNMENT WITH SAID EXIT OPENING, A HONEYCOMB STRUCTURE MOUNTED IN EACH OF SAID ANTECHAMBERS AND POSITIONED RESPECTIVELY BEHIND SAID INLET AND OUTLET OPENINGS, EACH OF SAID STRUCTURES COMPRISING A PLURALITY OF CONTIGUOUS ELONGATED CELLS, AND MEANS SEALING OFF THE TOP END OF EACH OF SAID CELLS, SAID STRUCTURES BEING MOUNTED WITH THE LONGITUDINAL AXES OF SAID CELLS IN SUBSTANTIALLY VERTICAL RELATIONSHIP AND THE OPEN ENDS OF SAID CELS FACING DOWNWARDLY TOWARD SAID BELT SPAN AND HAVING NO PHYSICAL CONTACT THEREWITH SO THAT ARTICLES ON SAID CONVEYOR PASS FREELY THEREBENEATH, WHEREBY SAID STRUCTURES FUNCTION TO CREATE A GAS BARRIER WHICH PREVENTS MOVEMENT OF GASES FROM SAID FREEZER CHAMBER INTO THE AMBIENT ATMOSPHERE AND FROM THE AMBIENT ATMOSPHERE INTO SAID FREEZER CHAMBER THROUGH SAID INLET AND OUTLET OPENINGS.