Original Publication Date: 1976-Oct-31
Included in the Prior Art Database: 2004-Mar-27
Xerox Disclosure Journal
Commercially available clutch and needle bearing units of the "drawn-cup" type with small radial sections do not have in- tegral contact seals. Where contact sealing is necessary, extrinsic lip seals are not satisfactory because they add considerably to the overall length of a unit and introduce higher drag forces on the shaft of the unit.