Bearing seal structure

Claim 1

IN A SEAL CONSTRUCTION, A SHAFT, A ROTATABLE MEMBER MOUNTED FOR ROTATION ABOUT SAID SHAFT, SAID ROTATABLE MEMBER FORMED WITH A FIRST ANNULAR RECESS ADJACENT ONE END OF SAID MEMBER, A CAP ON SAID SHAFT AT SAID END OF SAID MEMBER, SAID CAP FORMED WITH A SECOND ANNULAR RECESS DIRECTLY OPPOSITE AND FACING SAID FIRST RECESS, EACH SAID RECESS HAVING AN OUTWARDLY DIVERGING CONICAL SURFACE, A FIRST METAL RING AT LEAST PARTIALLY DISPOSED IN SAID FIRST RECESS, A SECOND METAL RING AT LEAST PARTIALLY DISPOSED IN SAID SECOND RECESS, SAID METAL RINGS EACH HAVING A CYLINDRICAL PORTION ENCOMPASSING SAID SHAFT AND OF GREATER DIAMETER THAN SAID SHAFT AND AN ABRUPTLY OUTWARDLY PROJECTING FLANGE ON ONE END OF SAID CYLINDRICAL PORTION, THE FLANGES OF SAID METAL RINGS BEING IN INTIMATE METAL-TO-METAL SEALING CONTACT, A FIRST RESILIENT RING DISPOSED AROUND SAID CYLINDRICAL PORTION OF SAID FIRST METAL RING AND DISPOSED IN SAID FIRST RECESS, A SECOND RESILIENT RING DISPOSED AROUND SAID CYLINDRICAL PORTION OF SAID SECOND METAL RING AND DISPOSED IN SECOND RECESS, EACH SAID RESILIENT RING BEING STRESSED IN ASSEMBLED POSITION AND SHAPED WITH A RESILIENT MIDSECTION OF RELATIVELY LARGE CROSS SECTION, SAID MIDSECTION SEALING TIGHTLY AGAINST SAID CONICAL SURFACE, AND HAVING A SMALL DIAMETER INNER CYLINDRICAL PORTION INTEGRALLY JOINED WITH SAID MIDSECTION LYING ALONG THE OUTSIDE OF SAID CYLINDRICAL PORTION OF SAID METAL RING AND BEING OF SUBSTANTIALLY GREATER LENGTH THAN THE THICKNESS OF SAID MIDSECTION AND TERMINATING IN A TIP BEARING AGAINST THE FLANGE OF THE METAL RING ABOUT WHICH SAID RESILIENT RING IS DISPOSED, SAID RESILIENT RINGS URGING SAID FLANGES INTO CONTACT AND FLOATINGLY MOUNTING SAID METAL RINGS APPROXIMATELY CENTRALLY RELATIVE TO SAID SHAFT.