Xerographic filter apparatus

Claim 1

FILTERING APPARATUS FOR FILTERING AN AERIFORM FLUID FLOWING THROUGH A FLUID DUCT ABOUT WHICH AN OUTWARDLY EXTENDING WALL MEMBER HAVING A DISCHARGE INLET THEREIN IS SECURED WITH THE DISCHARGE INLET IN ALIGNMENT WITH THE DUCT, SAID APPARATUS INCLUDING A PAIR OF SLIDES SECURED TO THE WALL MEMBER EACH OF SAID SLIDES HAVING A CAM ELEMENT THEREON, SAID SLIDES BEING POSITIONED IN SUBSTANTIALLY PARALLEL RELATION TO EACH OTHER ON OPPOSITE SIDES OF THE DISCHARGE INLET, A FILTER BAG INCLUDING A WALL PORTION HAVING AN INLET OPENING THEREIN AND A FLANGE FORMED WITH AN APERTURE, SAID FLANGE BEING CONNECTED TO THE OUTER SIDE OF SAID WALL PORTION AND POSITIONED SO THAT THE APERTURE IN SAID FLANGE IS AXIALLY ALIGNED WITH SAID INLET OPENING IN SAID WALL PORTION, AN APERTURED GASKET SECURED TO SAID FLANGE WITH THE APERTURE BEING SUBSTANTIALLY IN ALIGNMENT WITH SAID FLANGE APERTURE, CAM PORTIONS OPERATIVELY ASSOCIATED WITH SAID FLANGE AND ENGAGEABLE WITH SAID CAM ELEMENTS ON SAID SLIDES SUCH THAT THE FILTER BAG IS POSITIONED IN OPERATIVE RELATION WITH THE DISCHARGE INLET WHEN SAID CAM PORTIONS ARE INTO ENGAGEMENT WITH SAID CAM ELEMENTS ON SAID SLIDES ON THE WALL MEMBER WHEREBY THE FLANGE WILL BE CAMMED UPWARDLY TO FORM A DUSTPROOF SEAL BETWEEN SAID FILTER BAG SAID WALL MEMBER.