Multi-cell centrifugal dust separator

Claim 1

IN A MULTI-CELL CENTRIFUGAL DUST SEPARATOR HAVING A RAW GAS FEED CHAMBER, A PURIFIED GAS RECOVERY CHAMBER ADJACENT SAID FEED CHAMBER, A DUST COLLECTOR CHAMBER AT LAST PARTIALLY BELOW SAID FEED CHAMBER, ALL SAID CHAMBERS BEING SEALED OFF FROM DIRECT FLOW COMMUNICATION THEREBETWEEN AND SAID FEED AND RECOVERY CHAMBERS BEING SEPARATED AT LEAST IN PART BY A PARTITION INTERPOSED THEREBETWEEN WHICH IS PROVIDED WITH MEANS DEFINING A PLURALITY OF SEPARATE APERTURES THERETHROUGH, A CORRESPONDING PLURALITY OF CENTRIFUGAL SEPARATOR MEANS EACH INCLUDING A LOWER CENTRIFUGAL SEPARATOR DUST TUBE AND AN UPPER PURIFIED GAS TUBE, EACH SAID GAS TUBE POSSESSING A SMALLER DIAMETER THAN THAT OF THE CORRESONDING DUST TUBE AND BEING IN SUBSTANTIALLY VERTICAL PARTIAL TELESCOPING RELATION THEREWITH SUCH THAT THE LOWER END OF SAID GAS TUBE EXTENDS DOWNWARDLY INTO THE UPPER END OF SAID DUST TUBE SUFFICIENTLY TO DEFINE AN ANNULAR INLET MEANS THEREAT, SAID INLET MEANS FLOW COMMUNICATING THE PARTICULAR SEPARATOR MEANS WITH SAID FEED CHAMBER, A CORRESPONDING DUST OUTLET MEANS FLOW COMMUNICATING THE LOWER END OF EACH SAID DUST TUBE WITH SAID COLLECTOR CHAMBER, THE UPPER END OF EACH SAID GAS TUBE BEING CLOSED, A CORRESPONDING GAS OUTLET MEANS DEFINED RADIALLY THROUGH THE UPPER PORTION OF EACH SAID GAS TUBE, AND A CORRESPONDING GENERALLY RADIALLY OUTWARDLY ARRANGED GAS OUTLET CONDUIT INTERPOSED BETWEEN EACH SAID GAS OUTLET MEANS AND FLOW COMMUNICATING APERTURE MEANS OF SAID PARTITION AND FLOW COMMUNICATING SAID GAS TUBE WITH SAID RECOVERY CHAMBER THROUGH SAID PARTITION, WHEREBY RAW GAS PASSING THROUGH SAID FEED CHAMBER ENTERS SAID SEPARATOR MEANS THROUGH SAID INLET MEANS AND DUST CENTRIFUGALLY SEPARATED THEREIN PASSES VIA SAID DUST OUTLET MEANS TO SAID COLLECTOR CHAMBER WHILE RESULTING PURIFIED GAS FREE FROM SUCH DUST PASSES VIA SAID GAS OUTLET MEANS THROUGH THE CORRESPONSING GAS OUTLET CONDUIT AND APERTURE MEANS TO SAID RECOVERY CHAMBER, THE IMPROVEMENT WHICH COMPRISES CORRESPONDING RETIANING MEANS REMOVABLY ATTACHING EACH SAID GAS TUBE AND THE CORRESPONDING GAS OUTLET CONDUIT THEREOF IN THE FORM OF A COMPOSITE ARRANGEMENT TO THE CORRESPONDING POR-