Ball joint seal

Claim 1

A SNAP-ON BALL JOINT SEAL COMPRISING A RESILIENT, THIN-WALLED, CUP-SHAPED ELEMENT OF RUBBER-LIKE MATERIAL INCLUDING A BOTTOM END WALL PORTION HAVING AN OPENING THEREIN TO SEALINGLY ENGAGE A BALL JOINT STUD SHANK AND SIDE WALL PORTIONS TO SEALINGLY INTERCONNECT A BALL JOINT HOUSING AND AN ASSOCIATED MEMBER CONNECTED TO THE HOUSING BY THE BALL JOINT STUD, SAID SEAL BOTTOM END WALL PORTION HAVING A RING OF BEARING MATERIAL BONDED TO THE OUTER SIDE THEREOF AND SURROUNDING SAID OPENING WITH AN OUTER FACE OF SAID BEARING RING ARRANGED TO HAVE BEARING CONTACT WITH SAID ASSOCIATED MEMBER AND THE INNER PERIPHERAL EDGE PORTION OF SAID RING BEING ADAPTED FOR BEARING CONTACT WITH SAID STUD SHANK TO LOCATE THE SEAL THEREON, AN UPSTANDING, ANNULAR, SUBSTANTIALLY AXIALLY EXTENDING, FLEXIBLE LIP ON SAID SEAL SIDE WALL PORTIONS ARRANGED PERIPHERALLY ABOUT AND EXTENDING AXIALLY BEYOND SAID BEARING RING AND ARRANGED TO BE COMPRESSED AGAINST SAID ASSOCIATED MEMBER TO PROVIDE A SEALING RING AROUND SAID BEARING RING, AN ANNULAR, RADIALLY OUTWARDLY EXTENDING PERIPHERAL FLANGE PORTION ON THE SEAL SIDE WALL PORTIONS ADJACENT THE CUP OPEN END AND AN ANNULAR, AXIALLY EXTENDING LIP MEANS DEPENDING FROM SAID FLANGE AT THE CUP OPEN END TO CONTRACTIVELY SEAL AGAINST THE BALL JOINT HOUSING, SAID CUP SIDE WALL PORTIONS HAVING A STEPPED, ANNULAR SEALING RIB MEANS EXTENDING RADIALLY INWARDLY FROM THE INTERIOR SURFACE THEREOF ADJACENT SAID FLANGE AT THE CUP OPEN END OF SEAL AGAINST SAID HOUSING.