EP1512623A2 - Steering device - Google Patents

Steering device Download PDF

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Publication number
EP1512623A2
EP1512623A2 EP04445070A EP04445070A EP1512623A2 EP 1512623 A2 EP1512623 A2 EP 1512623A2 EP 04445070 A EP04445070 A EP 04445070A EP 04445070 A EP04445070 A EP 04445070A EP 1512623 A2 EP1512623 A2 EP 1512623A2
Authority
EP
European Patent Office
Prior art keywords
propeller
boat
carrying arm
housing
propeller assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04445070A
Other languages
German (de)
French (fr)
Other versions
EP1512623A3 (en
EP1512623B1 (en
Inventor
Martin Rybeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rybeck Marin-Consult AB
Original Assignee
Rybeck Marin-Consult AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rybeck Marin-Consult AB filed Critical Rybeck Marin-Consult AB
Publication of EP1512623A2 publication Critical patent/EP1512623A2/en
Publication of EP1512623A3 publication Critical patent/EP1512623A3/en
Application granted granted Critical
Publication of EP1512623B1 publication Critical patent/EP1512623B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers

Definitions

  • the purpose of this invention is to enable sailing boats and the like to steer sideways directly by the application of side thrust when navigating in confined waters e.g. when docking with a quay or manoeuvring through narrow passages.
  • the conventional method for achieving this is to mount a propeller in a tunnel across the boat and below the waterline.
  • a thruster tunnel can be mounted at the bow or the stem of the boat
  • This invention makes it possible to place the propeller under the water surface, even at the shallowest part of the hull, whilst also reducing the volume of internal space required for a conventional thruster tunnel.
  • the invention achieves these objectives by swinging down the propeller and the propeller housing through a recess in the bottom of the boat; thus the propeller will be placed under the water surface (fig 1)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cleaning In General (AREA)
  • Toys (AREA)
  • Bridges Or Land Bridges (AREA)
  • Massaging Devices (AREA)
  • Valve Device For Special Equipments (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

The main purpose for this invention is to provide an effective steering device for manoeuvring a boat in narrow passages e g when docking at a quay.
The most common arrangement with a conventional boat bottom is that the propeller and propeller house is placed in a thruster tunnel open to both sides of the boat below the water surface.
With more modem boats having a shallower hull profile a more effective solution is to have the propeller assembly lowered down through a recess in the hull bottom in order for it to be able to be below the water surface when required.. This is done by swinging the propeller assembly through a recess in the bottom of the boat as shown in fig 1.
This invention (in fig 1) fulfils the demands described above by having a propeller assembly (1) with a propeller (3) driven by a motor and placed at each end of a carrying arm (4) which is mounted in a pi fixture (A-A) (fig4) with pivoting axles (6) and which therefore can be swung down through the bottom of the boat and placed under the water surface.

Description

    Technical area and background
  • The purpose of this invention is to enable sailing boats and the like to steer sideways directly by the application of side thrust when navigating in confined waters e.g. when docking with a quay or manoeuvring through narrow passages.
  • The conventional method for achieving this is to mount a propeller in a tunnel across the boat and below the waterline. Such a thruster tunnel can be mounted at the bow or the stem of the boat
  • Modem hulls, especially for sailing boats, are often designed with a planing hull, which needs very shallow draft at the bow, which means that a conventional tunnel is often mounted close to or above the water surface (fig 3). To counter this the tunnel can be moved closer to the centre of the boat but this gives a lower turning effect for a given power input.
  • This invention makes it possible to place the propeller under the water surface, even at the shallowest part of the hull, whilst also reducing the volume of internal space required for a conventional thruster tunnel.
  • The invention achieves these objectives by swinging down the propeller and the propeller housing through a recess in the bottom of the boat; thus the propeller will be placed under the water surface (fig 1)
    • Description of the drawings
  • The invention is best described and understood by reference to the attached drawings.
  • Fig 1. Illustrates the main principles of the invention; showing how the propeller, and its housing / shroud is swung down from a recess in the bottom of the boat.
  • Fig 2. Shows an example of the conventional design; a propeller in a thruster tunnel.
  • Fig 3. Shows a more typical profile of the bottom of modem boat hulls.
  • Fig 4. Shows the pivot point around which the propeller assembly swings.
  • Fig 5. Shows how, when fully deployed, the propeller housing locates to the boat structure so that the side forces are not directed through the pivot point

Claims (1)

  1. This steering device (fig 1) is for assisting the steering of boat by swinging down a laterally mounted. propeller assembly from within a recessed housing in the hull of the boat (2). The pivot shaft is (6) held in a retaining-ring (7) and is attached to the main carrying-arm (4). At one end of the carrying arm is the propeller assembly (1) with bevel gearbox, propeller and shroud (where the side forces are taken up by the side steering (11) (fig 5)) and at the other end of carrying arm is a motor. Connecting these ends is a drive shaft (8). The whole system is mounted in a rigid sealed housing (9) with a flexible sealing ring (10) around the carrying arm.
    Characterized by the previously mentioned propeller housing of the steering device (1) with a propeller (3) driven by an engine and carried by an carrying arm (4) swung down around a pivot point (A-A in fig 4) and steered sideways by a adjustable support on the propeller housing (fig 5) and built in a sealed rigid housing (9) with a sealing ring (10) round the carrying arm.
    The device is activated by force from the actuator (12) acting upon the carrying arm yoke (5). Safety of operation is maintained by placing the entire system's pivot point (A-A) forward of the propeller assembly; thus in the event of hitting an obstruction the propeller assembly will swing upwards; together with a hinged lid (13) of the same shape and size as the recess opening which will seal the recess in the bottom.
EP04445070A 2003-07-14 2004-06-09 Steering device Expired - Lifetime EP1512623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0302063 2003-07-14
SE0302063A SE0302063L (en) 2003-07-14 2003-07-14 Control device

Publications (3)

Publication Number Publication Date
EP1512623A2 true EP1512623A2 (en) 2005-03-09
EP1512623A3 EP1512623A3 (en) 2006-10-04
EP1512623B1 EP1512623B1 (en) 2007-11-14

Family

ID=27764984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04445070A Expired - Lifetime EP1512623B1 (en) 2003-07-14 2004-06-09 Steering device

Country Status (4)

Country Link
EP (1) EP1512623B1 (en)
AT (1) ATE378249T1 (en)
DE (1) DE602004010012T2 (en)
SE (1) SE0302063L (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006128486A1 (en) 2005-06-02 2006-12-07 Schiffko Gmbh Forschung Und Entwicklung Maritimer Systeme Auxiliary drive device for ships
FR2913399A1 (en) * 2007-03-07 2008-09-12 Max Power Soc Par Actions Simp PROPULSION SYSTEM FOR ASSISTING MANEUVER FOR A BOAT.
EP2548797A1 (en) * 2011-07-18 2013-01-23 Sleipner Motor As Retractable thruster
WO2014052531A1 (en) * 2012-09-26 2014-04-03 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US8894453B2 (en) 2012-09-26 2014-11-25 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US9260173B2 (en) 2012-09-26 2016-02-16 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US10005532B2 (en) 2015-11-12 2018-06-26 Lewmar Limited Retractable thruster
US10766586B2 (en) 2018-06-22 2020-09-08 Lewmar Limited Retractable thruster and drive shaft for retractable thruster

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012012844U1 (en) * 2012-03-26 2014-02-11 Markus Schilcher Watercraft, such as surfboard with a drive unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014929A (en) * 1978-02-27 1979-09-05 Schottel Nederland Bv A vessel with tilting swivelling propeller and a swivelling propeller unit for such a vessel
NL9402184A (en) * 1994-12-22 1996-04-01 Lips A G Pivotable rudder propeller
NL1000019C1 (en) * 1995-04-03 1996-10-04 Meissner Engineering B V Retractable bow-mounted propeller for boat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2014929A (en) * 1978-02-27 1979-09-05 Schottel Nederland Bv A vessel with tilting swivelling propeller and a swivelling propeller unit for such a vessel
NL9402184A (en) * 1994-12-22 1996-04-01 Lips A G Pivotable rudder propeller
NL1000019C1 (en) * 1995-04-03 1996-10-04 Meissner Engineering B V Retractable bow-mounted propeller for boat

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006128486A1 (en) 2005-06-02 2006-12-07 Schiffko Gmbh Forschung Und Entwicklung Maritimer Systeme Auxiliary drive device for ships
FR2913399A1 (en) * 2007-03-07 2008-09-12 Max Power Soc Par Actions Simp PROPULSION SYSTEM FOR ASSISTING MANEUVER FOR A BOAT.
WO2008125782A2 (en) * 2007-03-07 2008-10-23 Max Power Propulsion system for manoeuvring assistance for a ship
WO2008125782A3 (en) * 2007-03-07 2008-12-18 Max Power Propulsion system for manoeuvring assistance for a ship
EP2548797A1 (en) * 2011-07-18 2013-01-23 Sleipner Motor As Retractable thruster
WO2014052531A1 (en) * 2012-09-26 2014-04-03 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US8894453B2 (en) 2012-09-26 2014-11-25 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US9260173B2 (en) 2012-09-26 2016-02-16 Robert Case Shallow-draft watercraft propulsion and steering apparatus
US10005532B2 (en) 2015-11-12 2018-06-26 Lewmar Limited Retractable thruster
US10766586B2 (en) 2018-06-22 2020-09-08 Lewmar Limited Retractable thruster and drive shaft for retractable thruster

Also Published As

Publication number Publication date
EP1512623A3 (en) 2006-10-04
SE524699C2 (en) 2004-09-21
ATE378249T1 (en) 2007-11-15
DE602004010012T2 (en) 2008-10-23
EP1512623B1 (en) 2007-11-14
SE0302063L (en) 2004-09-21
SE0302063D0 (en) 2003-07-14
DE602004010012D1 (en) 2007-12-27

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