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 INNER SHOULDER AND AN OUTWARDDIVERGING CONICAL SURFACE OUTWARD OF SAID SHOULDER, 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 JECTING FLANGE ON ONE END OF SAID CYLINDRICAL PORTION, THE 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 SAID SECOND RECESS, EACH SAID RESILIENT RING BEING STRESSED IN ASSEMBLED POSITION AND SHAPED WITH A RESILIENT MIDSECTION OF RELATIVELY LARGE CROSS SECTION, EACH SAID RESILIENT RING HAVING A LARGE DIAMETER OUTER CYLINDRICAL PORTION INTEGRALLY JOINED TO SAID MIDSECTION AND EXTENDING OUTWARDLY FROM SAID MIDSECTION IN A FIRST AXIAL DIRECTION AND IN SEALING CONTACT WITH SAID CONICAL SURFACE OF THE RECESS IN WHICH SAID RESILIENT RING IS LOCATED AND TERMINATING IN A TIP BEARING AGAINST SAID SHOULDER, EACH SAID RESILIENT RING HAVING A SMALL DIAMETER INNER CYLINDRICAL PORTION INTEGRALLY JOINED WITH SAID MIDSECTION AND PROJECTING IN AN AXIALLY OUTWARD DIRECTION FROM SAID MIDSECTION OPPOSITE SAID OUTER CYLINDRICAL PORTION AND SEALING AGAINST THE OUTSIDE OF SAID CYLINDRICAL PORTION OF SAID METAL RING 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, SAID RESILIENT RING DISASSEMBLED BEING LONGER IN AN AXIAL DIRECTION THAN THE DISTANCE BETWEEN SAID FLANGE AND SAID SHOULDER IN ASSEMBLED POSITION.