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Claim 1

A FILTER COMPRISING (A) A HOLLOW, GENERALLY CYLINDRICAL HOUSING HAVING (B) A FLUID EXHAUST PORT ADJACENT ONE END THEREOF AND (C) AT LEAST TWO ANGULARLY SPACED FLUID INLET PORTS IN THE SIDE OF SAID HOUSING ADJACENT THE OPPOSITE END THEREOF, (D) A FILTER ELEMENT HAVING A BORE AND A GENERALLY POROUS, ANNULAR SIDE WALL SURROUNDING SAID BORE, (E) MEANS MOUNTING SAID ELEMENT IN SAID HOUSING WITH THE EXTERIOR OF SAID WALL IN COMMUNICATION WITH SAID INLET PORTS AND WITH SAID BORE IN COMMUNICATION WITH SAID EXHAUST PORT, (F) A PLATE MOUNTED IN SAID HOUSING ADJACENT SAID OPPOSITE END THEREOF FOR RADIAL AND ANGULAR MOVEMENT RELATIVE TO THE AXIS OF SAID HOUSING IN A PLANE EXTENDING TRANSVERSE TO THE AXIS OF SAID HOUSING, (G) AN ARCUATE BAFFLE MEMBER SECURED TO THE MARGINAL EDGE OF SAID PLATE AND EXTENDING AXIALLY OF SAID HOUSING AND TRANSVERSE TO SAID INLET PORTS, (H) MANUALLY OPERABLE ADJUSTING MEANS ON THE EXTERIOR OF SAID HOUSING CONNECTED TO SAID PLATE FOR MOVING SAID PLATE RELATIVE TO SAID OUSING RADIALLY AND ANGULARLY INTO DIFFERENT RADIAL AND ANGULAR ADJUSTED POSITIONS, SAID PLATE BEING OPERATIVE UPON MOVEMENT THEREOF TO ONE POSITION TO SHIFT SAID BAFFLE INTO ALIGNMENT WITH ONE OF SAID INLET PORTS, AND UPON MOVEMENT THEREOF TO A DIFFERENT ANGULAR POSITION TO SHIFT SAID BAFFLE INTO ALIGNMENT WITH THE OTHER OF SAID INLET PORTS, AND (I) RELILIENT MEANS ON SAID BAFFLE MEMBER OPERATIVE TO SEAL A RESPECTIVE PORT WHEN SAID BAFFLE MEMBER IS ALIGNED WITH THAT PORT.