Filter assembly having the enclosure embedded in the bottom member

Claim 1

A THROW-AWAY OIL FILTER COMPRISING A FILTER ELEMENT WITH AN INLET AND AN OUTLET SIDE, A SURROUNDING CLOSURE MEMBER HAVING A CLOSED TOP AND AN OPEN BOTTOM, AN IN SITU MOLDED PLASTIC COMPOSITE BOTTOM MEMBER HAVING THE INNER AND OUTER BOTTOM EDGE PORTION OF SAID CLOSURE MEMBER EMBEDDED THEREIN TO FORM A FLUID AND PRESSURE TIGHT SEAL THEREWITH, SAID BOTTOM MEMBER INCLUDING A CENTRALLY DISPOSED BUSHING MEMBER COMMUNICATING WITH THE OUTLET SIDE OF SAID FILTER AND ADAPTED FOR INTERCONNECTION OF SAID FILTER WITH AN AUTOMOTIVE CRANKCASE OIL SYSTEM, FILTER INLET PORT MEMBERS IN SAID BOTTOM MEMBER DISPOSED RADIALLY OUTWARDLY FROM SAID BUSHING AND COMMUNICATING WITH THE INLET SIDE OF SAID FILTER, AND PERIPHERAL GASKETING MEANS INTEGRALLY CAST IN SAID BOTTOM MEMBER RADIALLY OUTWARDLY FROM SAID INLET PORT MEMBERS AND BONDED TO THE OUTER SURFACE OF SAID BOTTOM MEMBER FOR SEALING SAID BOTTOM AGAINST AN ENGINE BLOCK, AND ANTI-DRAINBACK SLOT MEANS INTEGRALLY CAST IN SAID BOTTOM MEMBER ADJACENT SAID INLET PORT MEMBERS FOR PREVENTING A REVERSE FLOW OF OIL THROUGH SAID INLET PORT MEMBERS.