Patent ID: 8474850
Filing Date: 2013-07-02
Classification: B62K,F16F,F16J

Abstract:
1. A lubricated guide unit for a motorcycle fork tube, the fork tube including an outer tube, the outer tube having an inner circumferential surface defining a cavity and an open end, and an inner tube telescopically slidable within the outer tube and having an outer circumferential surface, the guide unit comprising: upper and lower sliding bushings axially spaced apart, disposed within the outer tube cavity and configured to guide sliding movement of the inner tube; and a first sealing device mounted within the outer tube cavity proximal to the tube open end and configured to seal against the outer surface of the inner tube; and a second sealing device mounted within the outer tube cavity and configured to seal against the outer surface of the inner tube, the second sealing device being axially spaced from the first sealing device such that a sealed lubrication chamber is defined between the two sealing devices and the facing circumferential surfaces of the inner and outer tubes, the two bushings being disposed within the chamber, and a tubular spacer disposed within the lubrication chamber and configured to retain the upper and lower bushings spaced apart from each other, wherein the tubular spacer is perforated so as to facilitate lubrication of the outer surface of the inner tube.