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1. (US6085680) Device for increasing the steering effect of a rudder

Office : United States of America
Application Number: 09381684 Application Date: 23.09.1999
Publication Number: 6085680 Publication Date: 11.07.2000
Grant Number: 6085680 Grant Date: 11.07.2000
Publication Kind : A
Prior PCT appl.: Application Number:NO98000087 ; Publication Number: Click to see the data
IPC:
B63H 25/06
B63H 25/00
B63H 25/38
B63H 25/46
B63H 25/52
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
06
Steering by rudders
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
06
Steering by rudders
38
Rudders
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
46
Steering or dynamic anchoring by jets
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
H
MARINE PROPULSION OR STEERING
25
Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
52
Parts for steering not otherwise provided for
Applicants: Den Norske Stats Oljeselskap A.S.
Inventors: Samuelsen Arild K.
Agents: Foley & Lardner
Priority Data: 971368 24.03.1997 NO
Title: (EN) Device for increasing the steering effect of a rudder
Abstract: front page image
(EN)

An apparatus for enhancing the steering effect of ship rudders comprising a rudder with at least one passageway for supplying seawater to ducts in the rudder, and a profile element extending substantially vertically at a leading edge of the rudder and being pivotable about a generally vertical axis, wherein distribution ducts formed between the profile element and the rudder communicate with the passageway and are adjustable so that relative movement of the profile element and the rudder causes seawater to be discharged along the rudder surface facing abaft.


Also published as:
KR1020010005615ES2191290EP0970002JP2001516305 CN1251071DE000069810598
AU1998067521WO/1998/042565