Filter system for dry cleaning solvents

Claim 1

IN A DRY CLEANING PLANT, A FILTRATION SYSTEM FOR DRY CLEANING SOLVENTS COMPRISING A SERIESED COMBINATION OF FIRST AND SECOND FILTER CARTRIDGES, THE FIRST CARTRIDGE COMPRISING: AN OUTER PERFORATED, SUBSTANTIALLY CYLINDRICAL CANNISTER; AN INNER PERFORATED, SUBSTANTIALY CYLIDRICAL CANNISTER LOCATED COAXIALLY WITHIN SAID OUTER CANNISTER; TOP AND BOTTOM CLOSURE PLATES CONNECTING SAID CANNISTERS AND DEFINING AN ANNULAR SPACE BETWEEN THEM; A SLEEVE OF SYNTHETIC CLOTH MATERIAL SURROUNDING THE EXTERIOR OF SAID INNER CANNISTER; A FATTY ACIDS-REMOVING GILTERING MEDIUM SUBSTANTIALLY FILLING SAID ANNULAR SPACE; THE SECOND CARTRIDGE COMPRISING: A FIRST PERFORATED, SUBSTANTIALLY CYLINDRICAL CANNISTER; A SECOND PERFORATED, SUBSTANTIALLY CYLINDRICAL CANNISTER LOCATED COAXIALLY WITHIN SAID FIRST CANNISTER; TOP AND BOTTOM CLOSURE PLATES CONNECTING SAID CANNISTERS AND DEFINING AN ANNULAR SPACE BETWEEN THEM; SAID ANNULAR SPACE BEING FILLED WITH A COLOR AND ODOR REMOVING FILTERING MEDIUM; AND SEPARATE MATTED RANDOM FIBER BRISTLE BLANKETS SECURED ABOUT THE OUTER PERIPHERY OF SAID FIRST AND SAID SECOND CANNISTERS.