Patent ID: 6315296
Filing Date: 2001-11-13
Classification: F16J

Abstract:
An externally flangeless retrofittable unitized radial lip seal for a circular shaft rotatable within and relative to a coaxial bore that receives the shaft comprising:a. a sleeve that may be disposed coaxially around the shaft, the sleeve having;i. an inner end,ii. an outer end,iii. a shaft-engaging bore,iv. a sleeve outer surface,v. an internal sleeve flange extending radially outward from, and generally perpendicular to, the sleeve outer end, the internal sleeve flange being terminated with an internal sleeve flange outer edge,vi. a circular elastomeric face lip extending coaxially from an internal sleeve flange outer face,vii. an elastomeric perimeter lip extending radially outwardly from the internal sleeve flange outer edge to contactb. a generally cylindrical, hollow seal case adapted for fitting into a bore, the case having;i. a perimeter lip-contacting inner surface,ii. an outside surface,iii. an outer end opposite,iv. an inner end,v. a case faceplate extending radially inwardly from, and generally perpendicular to, the case outer end,vi. an internal case medial inner flange located between the case outer end and the case inner end, the internal medial inner flange extending radially inward from, and generally perpendicular to, the case body,vii. an internal case oil side inner flange located between the internal medial inner flange and the case inner end, the internal oil side inner flange extending radially inwardly from, and generally perpendicular to, the case body proximate the inner end of the sleeve,viii. at least one sleeve outer surface-contacting main sealing lip,c. said case faceplate having;i. a faceplate inner side,ii. an outside surface,iii. a central aperture larger than the inside diameter of the sleeve and smaller than the diameter of the sleeve outer surface,iv. the plane of the faceplate inner side oriented generally parallel to a case skirt and the internal sleeve flange,v. the faceplate being formed from the case and in contact with the face lip, and;d. the main sealing lip is biased against the outer surface of the sleeve.