EP0863837B1 - Einziehbarer schiffsantriebmit drehsperre - Google Patents

Einziehbarer schiffsantriebmit drehsperre Download PDF

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Publication number
EP0863837B1
EP0863837B1 EP96941071A EP96941071A EP0863837B1 EP 0863837 B1 EP0863837 B1 EP 0863837B1 EP 96941071 A EP96941071 A EP 96941071A EP 96941071 A EP96941071 A EP 96941071A EP 0863837 B1 EP0863837 B1 EP 0863837B1
Authority
EP
European Patent Office
Prior art keywords
thruster
well
arm
male part
hull
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.)
Expired - Lifetime
Application number
EP96941071A
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English (en)
French (fr)
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EP0863837A1 (de
Inventor
Guy Fontanille
Klara Elise Skaaltveit
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.)
Max Power SA
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Individual
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Filing date
Publication date
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Publication of EP0863837A1 publication Critical patent/EP0863837A1/de
Application granted granted Critical
Publication of EP0863837B1 publication Critical patent/EP0863837B1/de
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
    • 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
    • B63H2025/425—Propulsive elements, other than jets, substantially used for steering or dynamic anchoring only, with means for retracting, or otherwise moving to a rest position outside the water flow around the hull
    • 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
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose

Definitions

  • the present invention relates to a retractable thruster inside the hull of a floating or submersible vehicle.
  • This propellant is particularly interesting for equipping bows and the prows of boats or ships.
  • Document EP-A-0-503.206 of the applicant relates to a retractable or retractable thruster using a trapezoidal device with deforming rotation causing a rectilinear movement inside from a well.
  • the thruster is retractable or retractable and is composed a box, tightly fixed, on joint planes, on a well forming an integral part of the structure of the machine. Inside this box are folded two asymmetrically pivoting arms, a base motorized, a stirrup and a helical assembly. Both arms, one part are focused on the box and, on the other hand, on the stirrup integral with the propulsion base. Under the manual or mechanical action exerted on a lever secured to one of the arms by the shaft, said arm in rotation composed with the other triangulation arm orders the deformation of the trapezoid obtaining a rectilinear movement of the base in its center.
  • the document FR-A-2.229.608 proposes a motor, for example hydraulic which drives a vertical or inclined shaft, in two pieces, that can slide relative to each other.
  • the lower part of this shaft drives through a reference a propeller.
  • This one thanks the sliding of the drive shaft, can be retracted in rising above the water level.
  • This sliding can be caused by a hydraulic cylinder controlled by the same oil under pressure than the hydraulic motor.
  • the propeller can be steered for maneuvering the boat. In the high position, retracted into a well provided for this purpose, the lifting part can seal this well so to restore to the hull of the boat all its performance hydrodynamics.
  • this device lies in the fact that the thruster is orientable.
  • this kind of propellant is used for displacement, substantially perpendicular to the longitudinal axis of a ship, the bow of this ship. This movement is always the same, the orientation must be constant.
  • the orientation of the propellant leads to an increase in the financial costs of studies, construction and therefore sale of this type of device.
  • Document FR-A-2,348,850 relates to a blocking device a retractable boat thruster: this blocking is done by means of four articulated inclined locks producing thrusts of vertical and horizontal components, and four articulated locks producing horizontal thrusts.
  • the invention applies to large vertically retractable thrusters in a very important housing of a boat, which accommodation receives a mobile box carrying the propulsion unit whose thrust forces are transmitted to the boat by the entire guide structure of this box.
  • the device blocking this boat thruster acts as well vertically only horizontally. It is complex in structure and therefore expensive, with four locks with specific orientations and must therefore resist pushing efforts.
  • the present invention for its part, is simple, inexpensive, and comprises, on the one hand, a function of resumption of the thrust forces on the hull without complex mechanical element having to support significant constraints and / or be well adjusted, and secondly a function preventing rotation of the thruster relative to the boat or to the ship using it.
  • the invention relates to a transverse or longitudinal thruster, associated with inlet and outlet means inside a so-called retraction well, of longitudinal shape, present at the level of the hull of a floating or submersible device and comprising means for locking in rotation relative to the longitudinal axis ZZ 'of the well;
  • said propellant comprises a male part transverse to the axis ZZ 'and of any shape complementary to that of the female inside of said well in which it slides longitudinally along this axis, and an operating support arm which can be described as a column sliding or translational, of cylindrical shape along this same axis and passing through a guide bearing integral with said well, with a clearance ⁇ 1 between their respective complementary shapes, compatible with that ⁇ 2 obtained, in the propelled out position, between said male part transverse and the edge of the well connecting it to the hull, and thus allowing this male part to bear there.
  • said shaped part male and female form or inner part of the well are shaped polygonal in cross section, and also constitute said means for blocking the thruster from rotating relative to the axis longitudinal ZZ 'of the well.
  • said male part and the part inside the well can be circular: in this case, for constitute said rotation locking means, ie the axes longitudinal ZZ 'of the well and the guide arm are then offset one relative to each other, either a female or male guide rail is produced or fixed longitudinally on the inner side wall of the well, and said male part which slides therein respectively has an appendage or a notch compatible with the shape of this rail; said rail can even stop at its end before the edge of the well and the workpiece male, then going down a little lower than this rail, can get free while being guided in the well, and thus, as necessary, be made, in this position, free to rotate.
  • said well is closed at its upper part by a sealing plate sealed relative to the side walls of the well and carrying said bearing, which bearing comprises a lip seal on the arm and authorizing said ⁇ 1 clearance between them.
  • transverse thruster or longitudinal which is simple to make, inexpensive and ensuring the previously defined functions, both to take up thrust on the hull of the ship without support and intermediate mechanism adjusted and complicated to lock in rotation; these last two functions can be carried out by the same means also ensuring the guiding of the propellant in its retraction well.
  • the existence of defined games previously and described more precisely below makes it possible to carry out a very light structure while ensuring the above functions, then that in current techniques, the propellant is cantilevered at the end of a recessed support structure and carried by a guidance system, thus representing a large lever arm, the assembly having to absorb then a significant bending moment caused by the thrust of the propellant; so in structures current, we notice mechanical systems adjusted without play, heavy and of a necessary resistance all the more important as the height of fitting parts fitted into each other is enough weak relative to the lever arm at the end of which is mounted the propellant.
  • the other support necessary at the level of the bearing and making a feedback on the arm of maintenance of the propellant takes less effort in the ratio of the lever arm lengths to the fulcrum the male part at the level of the hull, than that of the thrust of the propellant, allowing to lighten the structure even more.
  • the well in which the said retracts thruster can be perfectly sealed from the rest of the hull surrounding, thus allowing its implantation, even under the line of floating or in a submersible.
  • such a device according to the invention is well suited to fairly low power thrusters enabling them to be used on small floating units, particularly in pleasure craft, where said thruster must be installed far forward in the bow of the boat, without take up space in the living area; moreover, due to its price of returns in itself relatively reduced, thanks to the characteristics of the present invention, it does not increase the budget of such units; of large thrusters can also be considered for large floating units, with some precautions additional to be taken by the skilled person to take into account shocks, in this case important, caused by mechanical play wanted according to the invention.
  • the present invention relates to a propellant 1 intended to be mounted movable longitudinally along an axis ZZ 'along a well 3, by means of input and output means 2.
  • the well 3 is made at the level of the hull 4 of a floating machine or submersible: it opens here under it is its axis ZZ 'is then vertical.
  • the propellant 1 is intended to allow lateral movement or longitudinal such as the bow of a boat, a ship, a submarine, etc ...
  • the longitudinal axis YY 'of the tunnel 19 in which the propeller is placed 18, is transverse and therefore perpendicular to the longitudinal axis XX 'of the floating or submersible machine, just like the ZZ 'axis here vertical of the well 3 is perpendicular to these two axes.
  • the propellant 1 is associated with a guide arm 9 which comprises in its upper part the motorization 20 intended for setting rotation of said propeller 18, thanks to a shaft 32 rotating inside said arm 9 and causing at its other end a return device to gear as shown in Figure 5 in dotted lines, because normally of course folded down in a plane perpendicular to said figure so that the axis of the propeller 18 is according to the representation of Figures 1 and 2 in the axis of the tunnel 19 which contains it.
  • the transmission can be hydraulic or electric and therefore without bevel gear, or shaft 32. This is the whole constituted by the arm 9 and the propellant 1 which is movable along F1, for allow the exit of said propellant relative to well 3 and to the shell, which is well represented in Figures 1, 2, 4 and 5.
  • this propulsion unit 1, arm 9 can be reassembled and retracted inside the well 3, the advantage being that the propellant 1 in retracted position does not exceed the plane of the hull 4.
  • a tape 26 such that shown in Figure 5, may be present at the free end of the assembly formed by the propellant 1 and the arm 9, so that retracted position, the thruster, by means of this step 26, forms a continuous surface with the adjacent shell 4, in order to preserve the hydrodynamic properties of the hull 4.
  • This closing tape 26 can be adapted to any shape of shell 4 and, fixed on demand and adjusted in position and relative to the tunnel 19 such as by collars 28: these maintain an intermediate plate 23 on which is reported step 26, for example by screwing 24.
  • the propeller 18 may be non faired in a tunnel: in this case, the closing tape 26 can be fixed on a lower heel carried by the propulsion support column.
  • the essence of the invention resides in the fact that a so-called male part 6 transverse to the axis ZZ ', and of a shape complementary to that of the female 5 of the well 3, slides longitudinally in the latter along this axis, and that a support arm 9 for operating the propellant, of cylindrical shape along this same axis, passes through a bearing 21 for integral guidance of said well 3, with a clearance ⁇ 1 between their respective complementary shape compatible with that ⁇ 2 obtained in the output position of the propellant 1 between said transverse male part 6 and the rim 25 of the well 3 connecting it to the shell 4, and thus allowing this male part 6 to bear there.
  • This male part 6 which, as required, is not limited to thickness, in fact has the main function of taking up the efforts of thrust of the propellant 1 by pressing directly on said flange 25 at the outer wall of the shell structure 4 to which is thus transmitted directly all the thrust.
  • said male part 6 is a plate present between the propellant 1 and the input and output means 2 of said propellant 1, or in fact between the propellant 1 and the arm 9.
  • This male part 6, as well as the female form 5 of the well 3 can be of polygonal shape in cross section, such as for example square section, as shown in Figure 3 and then constitutes also said means for blocking the propellant in rotation by relative to the longitudinal axis ZZ 'of well 3 and therefore relative to the shell 4.
  • said part 6 and the female form 5 complementary to the wells 3 act as guide means for the propellant 1 in its retraction or exit movement relative to said well 3.
  • the part 6, as indicated above, can be of square section and be inscribed inside a female form 5 also square of the well 3; of course, the square 5 of the well 3 is a recess whose dimensions are just greater than the dimensions of the part 6: thus for example the desired ⁇ 2 clearance between these forms 5, 6, whether square or otherwise, is 1 per 1000 at least, and at most by what is allowed by the clearance ⁇ 1 left at the level of the bearing 21 between, on the one hand the external shape of the arm 9 and on the other hand the complementary internal shape of the said bearing 21 .
  • Said well 3 is preferably closed at its upper part by a sealing shutter plate 29 with respect to the side walls 5 of the well and carrying said bearing 21, which then comprises a lip seal 27 for sealing on the arm 9 and allowing said clearance ⁇ 1 , as shown in FIG. 5.
  • the upper plate 29 for closing the well 3 also includes at its periphery any sealing device such as an O-ring 30, pressing on the upper rim and opposite that of the well 3, and the shaft 32 for rotating the propeller 18 inside the arm 9, is also made leaktight such as by a seal 31, for example of the lip type preferably located at the top of said arm 9.
  • the motorization 20 of the propeller 18 which is mounted at the other end of the arm 9 relative to the latter, will also move in pendulum with an amplitude ⁇ 3 : this movement is authorized by the longitudinal motorization means of the propellant along the axis ZZ ', such as those described below.
  • the outer face 8 of the male part which can therefore be a plate 6 and located on the side of the propellant, can, according to a particular embodiment, be in the plane of the shell 4 and thus become co-planar with the adjacent faces of it, so that no disturbance can come inside of well 3 isolated via this plate 6, always for keep the hydrodynamic properties of the hull 4.
  • this plate 6 has an anti-cavitation role with respect to the propeller 18.
  • the socket of the male part 6 in the female form 5 of the well 3 can be of any polygonal and even circular shape, always keeping said clearance ⁇ 2 between them to allow the recovery of forces thrust directly at the shell 4 in the extended position; if the shapes are circular, the resumption of the rotational forces which are weaker than those of direct thrust, can be ensured for example by off-center of the axis 7 of the arm 9 relative to the axis ZZ 'of the well 3.
  • motorization to allow movement along said axis ZZ 'of the arm 9 - propeller 1 assembly.
  • this motorization 10 is constituted by a screw 12, moved in rotation by means of a motor 13, this screw 12 cooperating with a nut 14 present at arm 9. rotation of the screw 12 will therefore allow the displacement of the nut 14 and thus of the arm 9, propellant 1 assembly, according to F1 or F2.
  • the guide columns 22 may be present, as in Figure 2; two cylinders can also be mounted diametrically in relation to axis 7 of arm 9 and operate in synchronization, the play existing between the male part 6 and the female form 5 of the well 3 allowing a possible offset, as mentioned above.
  • the input and output means 2 are constituted by another type of mechanical motorization 11, ensuring said operating movement of the arm 9.
  • This motorization mechanical includes a traction line which can be a chain or cable 15, moved along F3 to allow exit along F1, and along F4 to allow the entry according to F2 of the propellant 1, and moult longitudinally by means of a jack 16 secured to the shell 4: one end of the chain 15 is connected to the jack 16 while the other end is connected to the other end of the arm 9.
  • a return pulley 17 is present between the jack 16 and the arm 9, substantially in the extension of the longitudinal axis of the well 3 and also of the arm 9.
  • This pulley allows a return of the chain according to a angle which is preferably less than 20 °, and even in FIG. 4 of 15 °, thus enabling the well 3 and the jack 16 to be brought closer together close to the hull 4, so that the volume of the propellant 1 and of its annexes 2, 3, 10 and 11 is as low as possible and picked up at closer on said hull 4.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
  • Toys (AREA)
  • Actuator (AREA)

Claims (11)

  1. Quer- oder längsorientierter Antrieb (1) einer schwimmenden oder untertauchbaren Maschine, der mit länglichen Einfahr- und Ausfahrmitteln (2) in den bzw. aus dem Innenraum eines Schachts (3) verbunden ist, und der Mittel zum Blockieren einer Drehung bezüglich der Längsachse ZZ' des Schachts (3) und ein männliches Bauteil (6), das zur Achse ZZ' quer verläuft und zur weiblichen Form des Innenraumes des Schachts (3) komplementär ist, in dem es längs dieser Achse gleitet, und einen Betätigungs-Stützarm (9) umfaßt, der eine dieser Achse folgende, zylindrische Form hat und ein mit dem Schacht (3) verbundenes Lager (21) durchquert und in dessen Inneren sich eine Antriebswelle (32) der Schraube (18) dreht,
    dadurch gekennzeichnet, daß der Stützarm (9) in seinem oberen Bereich die die Welle (32) antreibende Motorisierung (20) abstützt, und die komplementären Formen des Lagers (21) bzw. des Stützarms (9) die Führung derselben gewährleisten und zwischen sich ein Spiel Δ1 umfassen, das mit demjenigen Spiel Δ2 kompatibel ist, das in der ausgefahrenen Stellung des Antriebs (1) zwischen dem querverlaufenden männlichen Bauteil (6) und dem Rand (25) des Schachts (3) entsteht und das es diesem männlichen Bauteil (6) erlaubt, sich daran abzustützen.
  2. Antrieb nach Anspruch 1,
    dadurch gekennzeichnet, daß das männliche Bauteil (6) und die weibliche Form (5) des Schachts (3) im Querschnitt von polygonaler Form sind und gleichermaßen die Mittel zum Blockieren der Drehung bezüglich der Längsachse ZZ' bilden.
  3. Antrieb nach Anspruch 2,
    dadurch gekennzeichnet, daß der Schacht (3) von quadratischem Querschnitt ist, und daß das Bauteil (6) von gleicher komplementärer quadratischer Form ist und als Führungsmittel des Antriebs (1) dient.
  4. Antrieb nach Anspruch 1,
    dadurch gekennzeichnet, daß die Längsachsen ZZ' des Schachts (3), und (7) des Führungsarms (9) gegeneinander versetzt sind und die Mittel zum Blockieren der Drehung bilden.
  5. Antrieb nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daß das männliche Bauteil (6) eine zwischen dem Antrieb (1) und den Einfahr- und Ausfahrmitteln (2) des Antriebs (1) vorhandene Platte ist.
  6. Antrieb nach Anspruch 5,
    dadurch gekennzeichnet, daß die auf der Seite des Antriebs (1) gelegene Fläche (8) der Platte (6) in der Ebene des Schiffsrumpfes (4) liegt, während der Antrieb (1) sich in der ausgefahrenen Stellung befindet.
  7. Antrieb nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, daß die Einfahr- und Ausfahrmittel (2) durch eine Motorisierung (10, 11) gebildet sind, die die Betätigungsbewegung des Arms (9) gewährleisten, welche das Einfahren und das Ausfahren des Antriebs (1) bewirkt.
  8. Antrieb nach Anspruch 7,
    dadurch gekennzeichnet, daß die Motorisierung (11) durch mindestens eine Traktionslinie (15) gebildet ist, die in Längsrichtung durch einen mit dem Schiffsrumpf verbundenen Zylinder (16) bewegt wird, wobei das eine der freien Enden der Kette mit dem Zylinder verbunden ist und das andere mit dem Arm (9).
  9. Antrieb nach Anspruch 8,
    dadurch gekennzeichnet, daß eine Umlenkrolle (17) der Kette (15) zwischen dem Zylinder (16) und dem Arm (9) vorhanden ist, und daß der Winkel zwischen den zwei beidseits der Umlenkrolle (17) gelegenen Abschnitten der Kette (15) weniger als 20° beträgt, so daß das Volumen des Antriebs (1) und seiner Anbauten (2, 3, 10 und 11) so klein wie möglich ist und so nahe wie möglich am Schiffsrumpf (4) liegt.
  10. Antrieb nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, daß der Schacht (3) in seinem oberen Teil durch eine bezüglich der seitlichen Wände (5) des Schachts (3) dichten und das Lager (21) tragenden Abdeckplatte (29) verschlossen ist, wobei das Lager eine abdichtende und das genannte Spiel Δ1 zulassende Lippendichtung (27) auf dem Arm (9) aufweist.
  11. Antrieb nach einem der Ansprüche 1 bis 10,
    dadurch gekennzeichnet, daß er einen Stopfklotz (26) aufweist, der am freien Ende der durch den Antrieb (1) und den Arm (9) gebildeten Einheit vorhanden ist, derart, daß der Stopfklotz (26) in der zurückgezogenen Stellung eine durchgehende Oberfläche mit dem benachbarten Schiffsrumpf (4) bildet.
EP96941071A 1995-12-01 1996-11-28 Einziehbarer schiffsantriebmit drehsperre Expired - Lifetime EP0863837B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9514806 1995-12-01
FR9514806A FR2741854B1 (fr) 1995-12-01 1995-12-01 Propulseur retractable pour bateau ou navire muni de moyens de blocage en rotation
PCT/FR1996/001885 WO1997020733A1 (fr) 1995-12-01 1996-11-28 Propulseur retractable pour bateau ou navire muni de moyens de blocage en rotation

Publications (2)

Publication Number Publication Date
EP0863837A1 EP0863837A1 (de) 1998-09-16
EP0863837B1 true EP0863837B1 (de) 1999-06-16

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EP96941071A Expired - Lifetime EP0863837B1 (de) 1995-12-01 1996-11-28 Einziehbarer schiffsantriebmit drehsperre

Country Status (6)

Country Link
US (1) US6056610A (de)
EP (1) EP0863837B1 (de)
AU (1) AU1033897A (de)
DE (1) DE69602969T2 (de)
FR (1) FR2741854B1 (de)
WO (1) WO1997020733A1 (de)

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US6067697A (en) * 1996-01-24 2000-05-30 Kamewa Finland Oy Method for removing a propeller assembly from and for mounting the same in an opening in the bottom of a swimming vessel
FR2798184B1 (fr) 1999-09-07 2001-11-23 Guy Fontanille Carter de dispositif de renvoi d'angle de moteur de propulsion pour bateau
US6672236B1 (en) 2002-06-26 2004-01-06 Stewart B. Pinsof Vessel maneuvering device
EP1422136A3 (de) 2002-11-25 2008-01-23 Javier Escacena Perez System zum Einziehen von Vortriebskomponenten an Booten
FR2853620B1 (fr) 2003-04-09 2006-05-05 Max Power Propulseur retractable par rotation
US7641526B1 (en) * 2008-09-09 2010-01-05 Thrustmaster of Texas, Inc. Vessel and underwater mountable azimuthing thruster
CN102666272B (zh) * 2009-09-14 2016-03-02 伊特里克公司 一种船用推进器组件、具有可收缩的推进器组件的船只及推进器组件水下拆卸方法
US8701581B2 (en) 2010-05-02 2014-04-22 Delphi Acquisition Holding I B.V. System and method for thruster protection during transport
DE102010043680A1 (de) * 2010-11-10 2012-05-10 Siemens Aktiengesellschaft Wasserfahrzeug mit einem Querstrahlantrieb
DE102010054124B4 (de) * 2010-12-10 2012-07-26 Howaldtswerke-Deutsche Werft Gmbh Unterseeboot
NL2009156C2 (nl) * 2012-07-09 2014-01-13 Imc Corporate Licensing B V Vaartuig met roteerbare pod.
ITMI20130694A1 (it) * 2013-04-26 2014-10-27 Fincantieri Cantieri Navali It Propulsore retrattile
EP2881317A1 (de) 2013-12-05 2015-06-10 Caterpillar Propulsion Production AB Abdichtunganordnung für einen Ausfahrbaren Strahlruder
CH711021A1 (fr) 2015-04-15 2016-10-31 Baumberger Charles Propulseur pour bateau.
WO2017085356A1 (en) * 2015-11-20 2017-05-26 Rolls-Royce Oy Ab A retractable thruster, a swimming vessel and a method for retracting and ejecting a propeller of the retractable thruster
US9738364B2 (en) 2016-01-15 2017-08-22 Kenneth Abney Hull-mountable retractable thruster apparatus and method
DE102017207344A1 (de) * 2017-05-02 2018-11-08 Skf Marine Gmbh Abdeckvorrichtung sowie Strahlruder
US20230356822A1 (en) * 2020-08-18 2023-11-09 Lewmar Limited Vertical retracting thruster

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Also Published As

Publication number Publication date
WO1997020733A1 (fr) 1997-06-12
DE69602969D1 (de) 1999-07-22
US6056610A (en) 2000-05-02
EP0863837A1 (de) 1998-09-16
DE69602969T2 (de) 1999-12-23
FR2741854B1 (fr) 1998-02-20
FR2741854A1 (fr) 1997-06-06
AU1033897A (en) 1997-06-27

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