Patent ID: 8490559
Filing Date: 2013-07-23
Classification: B63H,F16D,Y10T

Abstract:
1. A system for attaching a ship rudder to a rudder shaft, the system comprising: a rudder shaft including a cylindrical portion, an expanded flange part axially adjacent the cylindrical portion, and a conical portion axially adjacent the expanded flange part, wherein the expanded flange part has a cylindrical portion; a rudder including a rudder element and a flange element coupled to the rudder element, the flange element including an internal cylindrical portion slidingly engaging the cylindrical portion of the rudder shaft and an inner cylindrical portion slidingly engaging the cylindrical portion of the flange part of the rudder shaft; wherein the conical portion of the rudder shaft is seated in a mating conical recess of the rudder element; one or more channels for applying a hydraulic pressure between the rudder shaft and the flange element in an area between the cylindrical portion of the rudder shaft and the cylindrical portion of the expanded flange part.