Mobile filter with contaminant collecting means

Claim 1

IN COMBINATION WITH A FLUID RESERVOIR HAVING AN UPPER WALL A FILTER DEVICE COMPRISING (A) A TUBULAR MEMBER HAVING AN INNER CYLINDER SURFACE, AN OPEN INLET END AND AN OPEN END OPPOSITE SAID INLET END, (B) MEANS POSITIONING SAID TUBULAR MEMBER TO DEPEND FROM SAID UPPER WALL OF SAID RESERVOIR VERTICALLY INTO SAID RESERVOIR WITH THE INLET AND END BELOW THE LEVEL OF FLUID IN SAID RESERVOIR AND SAID OPPOSITE END DISPOSED EXTERIORLY OF SAID UPPER WALL, (C) A HOUSING STRUCTURE INCLUDING A PORTION MOUNTED TO SAID OPPOSITE END OF SAID TUBULAR MEMBER AND PROVIDED WITH AN OUTLET, (D) A FILTER ASSEMBLY AND MEANS MOUNTING SAID FILTER ASSEMBLY IN SAID TUBULAR MEMBER INTERMEDIATE SAID INLET END AND SAID OUTLET END; SAID FILTER ASSEMBLY BEING VERTICALLY UPWARDLY REMOVABLE FROM SAID TUBULAR MEMBER AND SAID FILTER ASSEMBLY INCLUDING AN ANNULAR FILTER ELEMENT HAVING AN OUTER SURFACE IN COMMUNICATION WITH SAID INLET END AND AN INNER SURFACE IN COMMUNICATION WITH SAID OUTLET, AND (E) A CIRCULAR FILTER MEMBER MOUNTED TO SAID FILTER ASSEMBLY AND SUPPORTED BENEATH SAID FILTER ELEMENT, SAID FILTER MEMBER NORMALLY POSITIONED EXTERIORLY OF SAID INLET END OF SAID TUBULAR MEMBER AND HAVING AN ANNULAR EDGE ENGAGING SAID INNER SURFACE OF SAID TUBULAR MEMBER UPON REMOVAL OF SAID FILTER ASSEMBLY FROM SAID TUBULAR MEMBER.