Patent ID: 6053783
Filing Date: 2000-04-25
Classification: B63H

Abstract:
A dismountable hub assembly (6) for the journaling of an impeller (4) drive shaft end (3) in a pump housing (2) of a water jet propulsion unit for the propulsion of a vessel, comprisinga bearing housing (8), structured and arranged for connection to a jet pump stator (7) of the pump housing (2);a sleeve (9), structured and arranged to be axially and non-rotationally fixed to the shaft end (3);bearings (10,11), rotationally journaling the sleeve relative to the bearing housing;tightening member (15) axially holding the sleeve relative to the bearing housing, and clamping the bearings in coaxial alignment with the sleeve and the bearing housing, respectively,the bearing housing (8) being structured and arranged to be operationally mounted to a stern end of the jet pump stator (7) by bearing housing mountings, such that the bearing housing mountings are accessible, the hub assembly being dismountable astern from the pump housing (2) as a single unit, without the need to dismount the pump housing (2) and the jet pump stator (7).