Filter support arrangement

Claim 1

DUST FILTER APPARATUS COMPRISING: A BOXLIKE SET OF HORIONTALLY-EXTENDING, SPACED AND PARALLEL FILTER POCKETS HAVING UPSTREAM OPEN-ENDED MOUTH PORTIONS; A VERTICALLYEXTENDING APERTURED HEADER FASTENED TO AND COMMUNICATING WITH SAID UPSTREAM OPEN-ENDED MOUTH PORTIONS OF SAID FILTER POCKETS; A SINGLE U-SHAPED ROD MEMBER COMPRISING THE SOLE SUPPORT FOR SAID SET OF FILTER POCKETS HAVING ITS BASE PORTION EXTENDING TRANSVERSE AND ADJACENT TO SAID UPPER DOWNSTREAM CORNERS OF SAID POCKETS; MEANS TO FASTEN SAID BASE PORTIONS TO THE UPPER DOWNSTREAM CORNERS OF SAID POCKETS, SAID ROD MEMBER HAVING ITS LEGS EXTENDING DIAGONALLY DOWNWARD FROM SAID BASE PORTION IN A LONGITUDINAL FASHION ALONG THE OUTER SIDES OF SAID BOXLIKE SET OF POCKETS TO THE DIAMETRICALLY OPPOSED LOWER UPSTREAM CORNERS OF SAID POCKETS TO ABUTTINGLY ENGAGE WITH AND FASTEN TO ADJACENT LOWER CORNERS OF SAID HEADER MEMBER, SAID ROD MEMBER BEING SIZED RELATIVE SAID SET OF FILTER POCKETS TO HOLD THE UPPER SIDES OF SAID POCKETS IN TENSION WHEN SAID POCKETS ARE DISPOSED TO EXTEND IN THE HORIZONTAL DIRECTION WITH SAID DIAGONALLY EXTENDING LEGS OF SAID ROD MEMBER BEING HELD IN COMPRESSION.