Oil-filters for internal combustion engines

Claim 1

IN COMBINATION WITH A REMOVABLE OIL FILTERING DEVICE, AN OPEN-ENDED RECHARGEABLE FILTER CARTRIDGE HOUSING; A THREADED AND APERTURED BOLT OPERATIVE TO BE SECURED TO AN ENGINE BLOCK; A UNITARY ADAPTER PLATE HAVING AN UPPER SIDE AND A LOWER SIDE OPERATIVE TO BE POSITIONED BETWEEN THE ENGINE BLOCK AND SAID CARTRIDGE HOUSING, SAID ADAPTER PLATE INCLUDING AN OUTER CONCENTRIC COLLAR ALONG SAID UPPER SIDE AND SPACED FROM THE PERIPHERY THEREOF AND DEFINING THEREBY AN UPPER GASKET SEAT, AN UPPER GASKET MOUNTED WITHIN THE UPPER GASKET SEAT FOR ENGAGEMENT WITH THE OPEN END OF SAID CARTRIDGE HOUSING TO SEAL THE SAME, SAID LOWER SIDE HAVING AN ANNULAR CONCENTRIC RECESSED GASKET SEAT, A GASKET MOUNTED WITHIN SAID RECESSED GASKET SEAT FOR ENGAGEMENT WITH THE ENGINE BLOCK, SAID PLATE HAVING A CENTRAL APERTURE FOR RECEIVING SAID BOLT, AN INNER COLLAR CONCENTRIC WITH SAID APERTURE AND PROTRUDING SLIGHTLY FROM BOTH SIDES OF SAID PLATE WHEREIN SAID BOTTOM GASKET IS POSITIONED RADIALLY OUTWARDLY OF THE LOWER PROTRUDING PORTION OF SAID INNER COLLAR; A PLURALITY OF RADIALLY SPACED APART LUGS EXTENDING BETWEEN SAID INNER COLLAR AND SAID ADAPTER PLATE APERTURE TO DEFINE OIL PASSAGES BETWEEN ADJACENT LUGS, AND AN ANNULAR DISHED PORTION FORMED IN THE UPPER SIDE OF SAID ADAPTOR PLATE BETWEEN SAID INNER AND OUTER COLLARS, WHEREBY THE REMOVABLE OIL FILTERING DEVICE CAN BE SUPPORTED ON THE UPPER END OF SAID INNER COLLAR AND OIL CAN FLOW INTO SAID CARTRIDGE HOUSING VIA THE SPACE BETWEEN SAID RADIAL LUGS AND INTO SAID DISHED PORTION.