Cathodic protection for water softeners and filters

Claim 1

IN A METAL TANK OF THE CLASS DESCRIBED, A BED CONTAINING CATION EXCHANGE MATERIAL, AN INLET AND OUTLET FOR THE WATER TO BE TREATED, A METAL MANIFOLD ON SAID INLET AND A METAL MANIFOLD ON SAID OUTLET BOTH WITHIN THE TANK AND EACH HAVING A PLURALITY OF CLOSELY SPACED OPENINGS OF SUCH DIMENSIONS AS TO PERMIT AN UNINTERRUPTED FLOW OF THE WATER BUT SMALL ENOUGH TO PREVENT NORMAL PASSAGE THERETHROUGH OF THE EXCHANGE MATERIAL OF THE BED, A SACRIFICAL GALVANIC ANODE IN AND ELECTRICALLY CONNECTED TO SAID TANK AND PROJECTING INTO THE BED OF MATERIAL FOR PROTECTING THE TANK WALLS AGAINST CORROSION BY REVERSAL OF CURRENT FLOW AND BY FORMATION OF A CALCAREOUS COATING, SAID TANK, INLET AND OUTLET BEING OF METAL AND PROVIDING CATHODIC AREAS, AND INSULTING MEANS BETWEEN EACH MANIFOLD AND THESE CATHODIC AREAS FOR ELECTRICCALLY INSULATING THE MANIFOLD THEREFROM TO PREVENT THE COATING FROM THE ANODE FROM COLLECTING ON AND IN THE OPENINGS OF THE MANIFOLD AND THEREBY ASSURING UNINTERRUPTED FLOW THROUGH THESE OPENINGS.