Liquid purifier and cleaner

Claim 1

A SPIN-ON THROW-AWAY LIQUID PURIFIER COMPRISING A CYLINDRICAL CASING, A CLOSURE MEMBER FOR ONE END THEREOF HAVING A THREADED CENTRAL BOSS FOR CONNECTION TO AN INTERNAL COMBUSTION ENGINE AND FORMING AN OUTLET, LIQUID INLET MEANS IN SAID CLOSURE MEMBER AND DISPOSED AROUND SAID BOSS, A LIQUID SEPARATOR SEALED IN SAID CASING AND COMPRISING A CYLINDRICAL BODY HAVING A CLOSED TOP AND AN OPEN BOTTOM, SAID CYLINDRICAL BODY FORMING A SHROUD DEPENDING FROM SAID TOP AND EXTENDING DOWNWARDLY IN AND CONCENTRIC WITH THE CASING, THERE BEING A SPACE BETWEEN THE CASING WALL AND THE SHROUD FORMING A DOWNWARDLY EXTENDING FLOW PASSAGE, THE LOWER END OF THE SHROUD BEING SPACED FROM THE LOWER END OF SAID CASING AND FORMING A SUMP THEREBELOW, AN ELONGATE CYLINDRICAL ANNULAR FILTER UNIT WITHIN AND SPACED FROM SAID CYLINDRICAL SHROUD, THE TOP HAVING A CENTRAL OPENING LEADING TO SAID OUTLET AND HAVING A NULAR MEANS AROUND SAID OPENING IN FLUID TIGHT SEALING CONNECTION WITH AND AROUND SAID BOSS, SAID FILTER UNIT HAVING AN AXIAL PASSAGE COMMUNICATING WITH SAID OUTLET THROUGH SAID CENTRAL OPENING OF SAID TOP, THE BOTTOM OF SAID FILTER UNIT HAVING A CENTRAL OPENING LEADING INTO THE LOWER END OF SAID AXIAL PASSAGE, MEANS FOR CLOSING OFF SAID OPENING IN THE BOTTOM OF SAID FILTER UNIT, SAID SHROUD EXTENDING AT ITS LOWER END A SUBSTANTIAL DISTANCE BELOW THE BOTTOM OF SAID FILTER UNIT, SAID TOP BEING SPACED FROM SAID CLOSURE MEMBER AND FORMING A CHAMBER RECEIVING LIQUID FROM SAID INLET MEANS, A BAFFLE UNIT HAVING A DISC HEAD BELOW AND SPACED FROM SAID BOTTOM OF THE FILTER UNIT AND OF SMALLER DIAMETER THAN AND POSITIONED WITHIN THE LOWER END OF SAID SHROUD, SAID BAFFLE UNIT HEAD CARRYING A DEPENDING SKIRT PORTION EXTENDING BELOW THE BOTTOM OF AND SPACED FROM SAID SHROUD, MEANS CARRIED BY SAID CYLINDRICAL BODY FOR IMPARTING A SPIRAL CENTRIFUGAL MOVEMENT TO FLUID FLOWING DOWNWARDLY THROUGH SAID FLOW PASSAGE FROM SAID CHAMBER TO THE LOWER END OF THE SHROUD, MEANS WHEREBY THE LIQUID IS IMPELLED TO REVERSE ITS DIRECTION OF FLOW BELOW THE SHROUD TO EFFECT DISCHARGE OF CONTAMINANTS THEREFROM INTO THE SUMP AND TO THEN FLOW IN PART UPWARDLY BETWEEN THE FILTER AND THE SHROUD TO PASS RADIALLY INWARDLY THROUGH THE FILTER TO SAID AXIAL PASSAGE AND TO FLOW IN PART TO TH CENTRAL OPENING IN SAID BOTTOM OF THE FILTER UNIT AND INTO THE LOWER END OF SAID AXIAL PASSAGE FOR EXIT THROUGH SAID OUTLET.