Filter housing

Claim 1

A HOUSING FOR A FILTER DEVICE COMPRISING STRUCTURE FORMING A CONTAINER OF THIN GAUGE METAL AND HAVING A BASE PORTION AND A BODY PORTION EXTENDING THEREFROM, SAID BODY PORTION HAVING AN OPENING PROVIDING ACCESS TO THE INTERIOR OF SAID CONTAINER, A FILTER DEVICE OPERATIVELY DISPOSED IN SAID INTERIOR OF SAID FILTER DEVICE, A PORTION OF THE OUTER SURFACE OF SAID BODY PORTION ADJACENT TO SAID OPENING BEING ROLL THREADED WITH A SERIES OF CONTINUOUS THREADS, THE END PORTION OF THE ROLLED THREADS OF SAID CONTAINER ADJACENT TO SAID OPENING THEREOF EXTENDING AT AN ANGLE TO THE OUTER SURFACE OF SAID CONTAINER TO FORM A STOP INLET AND OUTLET MEANS DISPOSED ON SAID BASE PORTION FOR PASSING A FLOW OF FLUID TO BE FILTERED WITH RESPECT TO THE INTERIOR OF SAID CONTAINER, MEANS FOR THREADEDLY ATTACHING SAID BASE PORTION TO A MOUNTING SURFACE HAVING PASSAGES IN FLUID COMMUNICATION WITH SAID FLUID FLOW PASSING MEANS, GASKET MEANS ENCLOSING SAID FLUID FLOW PASSING MEANS FOR SEALING SAID BASE PORTION TO SAID MOUNTING SURFACE, A COVER OF THIN GUAGE METAL HAVING A BASE PORTION FOR CLOSING THE OPENING IN SAID BODY PORTION AND A FLANGE PORTION EXTENDING FROM ADJACENT THE PERIPHERY OF SAID BASE PORTION, THE INNER SURFACE OF SAID FLANGE PORTION BEING ROLL THREADED WITH A SERIES OF SAID FLANGE PORTHREADS FOR ENGAGEMENT TO SAID THREADED PORTION OF THE OUTER SURFACE OF SAID BODY PORTION, THE END PORTION OF THE ROLLED THREADS OF THE INNER SURFACE OF SAID FLANGE PORTION LAST TO APPROACH THE ROLLED THREADS OF SAID CONTAINER DURING ENGAGEMENT THEREWITH BEING ADAPTED TO INTERSECT SAID STOP, SAID FLANGE PORTION HAVING AN ANNULAR GROOVE