Sealed anti-friction bearing

Claim 1

IN A MACHINE ASSEMBLY HAVING A SHAFT AND A PART INCLUDING A BORE WITH A WALL MOUNTED CONCENTRIC TO ONE ANOTHER AND WITH THE SHAFT ROTATABLE IN THE BORE AND ADAPTED TO RECEIVE A PREASSEMBLED ROLLER BEARING AROUND THE SHAFT AND WITHIN THE BORE, THE IMPROVEMENT COMPRISING A PREASSEMBLED ROLLER BEARING INCLUDING IN COMBINATION A HOUSING MEMBER HAVING A RACEWAY PORTION SNUGLY POSITIONED AT ITS OUTSIDE-SURFACE-PORTION AGAINST THE WALL OF THE BORE AND HAVING ROLLERS RETAINED IN THE RACEWAY PORTION IN ENGAGEMENT WITH THE SHAFT, SAID HOUSING MEMBER HAVING SPACED AWAY FROM THE BORE WALL AN INTEGRAL FLANGE PORTION WHICH EXTENDS IN AN AXIAL DIRECTION IN THE BORE AWAY FROM SAID OUTSIDE SURFACE PORTION A DIMENSION LESS THAN THE AXIAL LENGTH OF THE BORE WALL, SAID FLANGE PORTION HAVING A RADIALLY AND ANGULARLY BENT LIP AT THE END THEREOF, SEALING MEANS FOR SAID ROLLER BEARING AT SAID INTEGRAL FLANGE PORTION OF SAID HOUSING MEMBER FOR SEALING THE SAME AGAINST THE PASSAGE THROUGH THE BEARING OF LUBRICANT AND CONTAMINANTS AND FOR ALSO SEALING THE BORE OVER ITS FULL RADIAL DIMENSION AT THE PORTION OF SAID BORE CORRESPONDING IN POSITION THEREIN TO THE HOUSING-MEMBERFLANGE-PORTION, SAID SEALING MEANS COMPRISING A ONE-PIECE MOLDED NYLON MEMBER HAVING A BODY PORTION AND A YIELDABLE LIP PORTION WITH A GROOVE BETWEEN THE FIRST TWO NAMED