Screen structure

Claim 1

AS A SUBCOMBINATION IN A VIBRATING CLASSIFIER HAVING SUPPORTING MEANS THEREON, A SCREEN ASSEMBLY COMPRISING, A FORAMINOUS SCREEN, A MOUNTING RING, MEANS FOR BONDING SAID SCREEN TO SAID MOUNTING RING UNDER A PRESELECTED TENSION AND TO COACT WITH SAID MOUNTING RING TO MAINTAIN SAID TENSION IN SAID SCREEN, SAID MOUNTING RING AND SAID BONDING MEANS BEING THE SOLE MEANS FOR MAINTAINING TENSION IN SAID SCREEN, AND A PAIR OF CORROSION-RESISTANT ANNULAR FRAME MEMBERS ADAPTED TO BE SECURED TOGETHER AND TO BE ENGAGED BY SAID SUPPORTING MEANS OF SAID CLASSIFIER, SAID FRAME MEMBERS DEFINING AN ANNULAR RECESS IN WHICH SAID MOUNTING RING IS POSITIONED WHEN SAID FRAME MEMBERS ARE SECURED TOGETHER IN SAID SUPPORTING MEANS TO POSITION SAID SCREEN ACROSS THE INTERIOR OF SAID CLASSIFIER, SAID MOUNTING RING BEING OF A MATERIAL RELATIVELY NONRESISTANT TO CORROSION IN RELATION TO THE CORROSION-RESISTANT MATERIAL OF SAID FRAME MEMBERS, SAID FRAME MEMBERS WHEN SECURED TOGETHER, ENGAGING SAID SCREEN IN SEALING ENGAGEMENT TO ISOLATE SAID MOUNTING RING FROM THE INTERIOR OF SAID CLASSIFIER.