EP0189154B1 - Boat with retractable keel - Google Patents

Boat with retractable keel Download PDF

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Publication number
EP0189154B1
EP0189154B1 EP86100626A EP86100626A EP0189154B1 EP 0189154 B1 EP0189154 B1 EP 0189154B1 EP 86100626 A EP86100626 A EP 86100626A EP 86100626 A EP86100626 A EP 86100626A EP 0189154 B1 EP0189154 B1 EP 0189154B1
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EP
European Patent Office
Prior art keywords
keel
boat
retractable
compression springs
lifting
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
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EP86100626A
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German (de)
French (fr)
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EP0189154A1 (en
Inventor
Fritz Dipl.-Kfm. Marggraff
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Individual
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Individual
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Priority to AT86100626T priority Critical patent/ATE39656T1/en
Publication of EP0189154A1 publication Critical patent/EP0189154A1/en
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Publication of EP0189154B1 publication Critical patent/EP0189154B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B2035/009—Wind propelled vessels comprising arrangements, installations or devices specially adapted therefor, other than wind propulsion arrangements, installations, or devices, such as sails, running rigging, or the like, and other than sailboards or the like or related equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B63B2041/003—Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B63B2041/006—Telescopically collapsible keels

Definitions

  • the invention relates to a boat with a lowerable and retractable keel according to the preamble of the main claim.
  • keels with a high weight and a correspondingly large draft are used to achieve the stability that prevents capsizing.
  • the movable keel must be at least largely extended due to the necessary stability and to reduce drift.
  • Flat waters can also be sailed with a reduced sail area or under motor. Only a small water depth is required for the berths in the port.
  • Smaller yachts with a retractable keel do not need a berth in the water. They can be brought ashore using a slip and parked there. With a towing vehicle - a passenger car is sufficient for small and medium-sized yachts - even remote areas can be reached. Also coming to the bottom loses its danger, since the yacht becomes free again after catching the keel.
  • a yacht with a lifting keel is known, which is held by means of rubber ropes and can be recovered and lowered by means of a wire rope using a winch.
  • a mounting of a lifting keel is not particularly suitable, since the material of the rubber cables, particularly in the area of their fastening points, can tear due to the high load.
  • material fatigue occurs, which not only reduces the tension, but there is also the risk of tearing.
  • the invention has for its object to provide a boat with a lowerable and retractable keel, a keel with a high weight can be lowered against tensioning elements, and that the dangers due to failure of the tensioning elements are avoided.
  • the keel can be caught up by means of a spindle mounted on the cabin roof, which engages in a threaded part or the like fastened to the lifting keel.
  • the lifting keel is profiled differently in its upper area, which is guided in the lifting keel box, than on the part that can be lowered into the water.
  • the through opening provided in the bottom of the boat, through which the keel is guided, also forms a guide for the keel, which as a metallic part can be adapted very precisely to the profile of the part passed through.
  • Both the lifting keel as well as the swiveling keel and ballast sword can be provided with devices that enable locking in any position.
  • Both the lifting keel and the swiveling keel, for example, screws can be arranged at the upper end, which create a rigid connection between the keel and keel box.
  • the keel can be secured using a synthetic fiber line.
  • the line can be designed so that the line acts as a predetermined breaking point when touching the ground and allows the keel to retreat to avoid damage.
  • the sailboat shown in FIG. 1 has a lowerable and retractable keel 1 designed as a lifting keel, the upper area 2 of which is guided in a keel box 3, hereinafter referred to as the lifting keel box.
  • two compression springs 4 which serve as tensioning elements and are designed as spiral springs, run in the lifting keel box 3.
  • the cabin roof 5 ends with the Lifting keel box 3.
  • a spindle 7 runs in the center of gravity of lifting keel 1, which is rotatably and fixedly attached in the area of the cabin roof 5. At its lower end 8 it engages in the corresponding thread on the lifting keel 1. By turning the spindle 7, the lifting keel 1 can be made up or lowered into the position shown here. Details of the arrangement of the compression springs 4 and the spring channels 10 will be explained in more detail later with reference to FIGS. 4 and 5.
  • the drawing shows the lifting keel 1 completely lowered, the compression springs 4 being maximally tensioned.
  • the total force acting on the lifting keel 1 from the two compression springs 4 can correspond to the dead weight of the lifting keel 1 minus the buoyancy caused by the water.
  • the spindle 7 can thereby be easily operated by hand, for example by means of a crank attached to its upper end.
  • the spindle 7 is designed as a square 9 at its upper end.
  • the spindle 7 is supported in the area of the cabin roof 5 or in the area of the upper end of the lifting keel case 3 by ball thrust bearings.
  • the compression springs 4 are guided in the spring channels 10 provided in the lifting keel.
  • a corresponding spindle channel 11 is provided for the spindle 7.
  • the channels 10 and 11 are tubular and adapted to the diameter of the compression springs 4 and the diameter of the spindle 7.
  • the compression springs 4 can be pre-tensioned when the lifting keel 1 is completely retracted. In addition, there is the possibility of designing the compression springs 4 such that they absorb a greater force when the lifting keel 1 is completely lowered than would be required to lift the lifting keel 1. In the last area, the lifting keel 1 would have to be pressed down by means of the spindle 7 in this case.
  • the section A-B shown in FIG. 2 shows in particular the profile of the upper region 2 of the lifting keel 1 and its remaining profile 13.
  • the lifting keel box 3 has essentially a rectangular profile 14 with two rectangular bulges 15.
  • the tubular channels 10, 11 for receiving the compression springs 4 and the spindle 7 can also be seen.
  • a plurality of laterally arranged screws 16 are provided on the lifting keel box 3, with which the lifting keel can be locked in the fully lowered or any position.
  • FIG 3 a section is shown, which shows the spindle 7 and the upper end of the lifting keel 1 enlarged compared to Figure 1. At the upper end of the spindle channel 11, this has a threaded section 17, in which the spindle 7 engages.
  • FIGS. 4 and 5 show details of the arrangement of the spiral springs used as compression springs 4.
  • the lower end 32 presses against a plate-shaped stop 33 which is rigidly connected to the upper end of the lifting keel box or to the cabin roof via a rod 34 leading vertically upwards.
  • the upper end 35 of the compression springs 4 presses against a stop 36 which is rigidly connected to the lifting keel 1.
  • the stop 36 forms an upper cover of the tubular spring channels 10, while in the embodiment shown in Figure 5, the stop 36 delimits a tube 37, which forms the spring channel 10, which in a manner not shown here is connected to the lifting keel 1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Springs (AREA)

Description

Die Erfindung betrifft ein Boot mit absenkbarem und aufholbarem Kiel gemäß der Gattung des Hauptanspruchs.The invention relates to a boat with a lowerable and retractable keel according to the preamble of the main claim.

Für Segeljachten werden zur Erzielung der Stabilität, die das Kentern verhindert, Kiele mit hohem Gewicht und entsprechend großem Tiefgang verwendet. Bei frischem Wind und unter voller Besegelung muß der bewegliche Kiel wegen der notwendigen Stabilität und zur Verminderung der Abdrift wenigstens zum größeren Teil ausgefahren sein. Mit verringerter Segelfläche oder unter Motor können auch fläche Gewässer befahren werden. Auch bei den Liegeplätzen im Hafen ist nur eine geringe Wassertiefe erforderlich. Kleinere Jachten mit einholbarem Kiel benötigen keinen Liegeplatz im Wasser. Sie können über einen Slip mittels eines Trailers an Land geholt und dort abgestellt werden. Mit einem Zugwagen - bei den kleineren und mittleren Jachten genügt ein Personenkraftwagen - sind auch entfernte Reviere erreichbar. Auch das Auflaufen auf Grund verliert seine Gefahr, da die Jacht nach Aufholen des Kiels wieder frei wird.For sailing yachts, keels with a high weight and a correspondingly large draft are used to achieve the stability that prevents capsizing. When the wind is fresh and under full sail, the movable keel must be at least largely extended due to the necessary stability and to reduce drift. Flat waters can also be sailed with a reduced sail area or under motor. Only a small water depth is required for the berths in the port. Smaller yachts with a retractable keel do not need a berth in the water. They can be brought ashore using a slip and parked there. With a towing vehicle - a passenger car is sufficient for small and medium-sized yachts - even remote areas can be reached. Also coming to the bottom loses its danger, since the yacht becomes free again after catching the keel.

Aus der AU-B-495 347 ist eine Jacht mit einem Hubkiel bekannt, der mittels Gummiseilen gehalten und über ein Drahtseil mittels einer Seilwinde aufholbar und absenkbar ist. Für die Praxis ist eine derartige Halterung eines Hubkiels nicht besonders geeignet, da das Material der Gummiseile, insbesonders im Bereich ihrer Befestigungspunkte, aufgrund der hohen Belastung reißen kann. Außerdem tritt durch mehrmaliges Absenken und Aufholen des Kiels bein Gummiseilen eine Materialermüdung ein, wodurch nicht nur die Spannkraft nachläßt, sondern auch die Gefahr des Reißens besteht. Infolge einer Kettenreaktion kann das Gewicht des Kiels nach dem Reißen eines ersten Gummiseils von den übrigen Gummiseilen nicht mehr gehalten werden, so daß der Kiel demzufolge nach unten aus dem Kielkasten ausbrechen würde, falls nicht das Drahtseil und die Seilwinde für das Gesamtgewicht des Kiels ohne Berücksichtigung der Entlastung durch die Gummiseile ausgelegt sind. Auch die ebenfalls bereits bekannte Verwendung von Zugfedern anstelle der Gummiseile schafft hier keine Abhilfe.From AU-B-495 347 a yacht with a lifting keel is known, which is held by means of rubber ropes and can be recovered and lowered by means of a wire rope using a winch. In practice, such a mounting of a lifting keel is not particularly suitable, since the material of the rubber cables, particularly in the area of their fastening points, can tear due to the high load. In addition, due to repeated lowering and catching up of the keel with rubber ropes, material fatigue occurs, which not only reduces the tension, but there is also the risk of tearing. As a result of a chain reaction, the weight of the keel can no longer be held by the remaining rubber cables after a first rubber rope has been torn, so that the keel would break out of the keel box downwards if the wire rope and the cable winch were not taken into account for the total weight of the keel the relief by the rubber ropes are designed. The already known use of tension springs instead of the rubber cables does not remedy this.

Der Erfindung liegt die Aufgabe zugrunde, ein Boot mit absenkbarem und aufholbarem Kiel zu schaffen, wobei auch ein Kiel mit hohem Gewicht gegen Spannelemente absenkbar ist, und daß dabei die Gefahren infolge Versagens der Spannelemente vermieden werden.The invention has for its object to provide a boat with a lowerable and retractable keel, a keel with a high weight can be lowered against tensioning elements, and that the dangers due to failure of the tensioning elements are avoided.

Die Lösung dieser Aufgabe wird durch die im Hauptanspruch angegebenen Merkmale erreicht. Beim Absenken des Kiels werden die mit ihm verbundenen Druckfedern, die in röhrenförmigen Federkanälen verlaufen, gespannt. Das untere Ende der Druckfedern liegt an einem mit dem Boot starr verbundenen Anschlag an, während das obere Ende der Druckfedern an einem mit dem Hubkiel verbundenen Anschlag anliegt. Die Verwendung von Druckfedern hat gegenüber der Verwendung von auf Zug belasteten Spannelementen den großen Vorteil, daß die Gefahr eines Bruchs der Spannelemente praktisch ausgeschlossen ist.This object is achieved by the features specified in the main claim. When the keel is lowered, the compression springs connected to it, which run in tubular spring channels, are tensioned. The lower end of the compression springs lies against a stop rigidly connected to the boat, while the upper end of the compression springs lies against a stop connected to the lifting keel. The use of compression springs has the great advantage over the use of tensioning elements loaded under tension that the risk of the tensioning elements breaking is practically excluded.

Bei vollständig abgesenktem Hubkiel können die verwendeten Druckfedern vollständig zusammengedrückt sein, wobei die Druckfedern mit Druckkräften belastet werden Federkraft.When the lifting keel is completely lowered, the compression springs used can be fully compressed, the compression springs being loaded with compression forces.

Grundsätzlich besteht auch die Möglichkeit, Druckfedern in Verbindung mit einem Schwenkkiel zu verwenden.Basically there is also the possibility to use compression springs in connection with a swivel keel.

Das Aufholen des Kiels kann mittels einer am Kajütdach ortsfest gelagerten Spindel erfolgen, die in ein am Hubkiel befestigtes Gewindeteil oder dergleichen eingreift.The keel can be caught up by means of a spindle mounted on the cabin roof, which engages in a threaded part or the like fastened to the lifting keel.

Der Hubkiel ist in seinem oberen Bereich, der Im Hubkielkasten geführt ist, anders profiliert als an dem in das Wasser absenkbaren Teil. Die im Bootsboden vorgesehene Durchführungsöffnung, durch die der Kiel hindurchgeführt ist, bildet ebenfalls eine Führung für den Kiel, die als metallisches Teil sehr genau an das Profil des hindurchgeführten Teils angepaßt sein kann.The lifting keel is profiled differently in its upper area, which is guided in the lifting keel box, than on the part that can be lowered into the water. The through opening provided in the bottom of the boat, through which the keel is guided, also forms a guide for the keel, which as a metallic part can be adapted very precisely to the profile of the part passed through.

Sowohl Hubkiel als auch Schwenkkiel und Ballastschwert können mit Einrichtungen versehen sein, die eine Arretierung in jeder beliebigen Stellung ermöglichen. Sowohl beim Hubkiel als auch beim Schwenkkiel können beispielsweise am oberen Ende Schrauben angeordnet sein, die eine starre Verbindung zwischen Kiel und Kielkasten herstellen. Der Kiel kann mittels einer Leine aus Kunstfasern gesichert werden. Die Leine kann dabei so ausgebildet sein, daß bei Grundberührung die Leine als Sollbruchstelle wirkt und ein Zurückweichen des Kiels zuläßt, um Beschädigungen zu vermeiden.Both the lifting keel as well as the swiveling keel and ballast sword can be provided with devices that enable locking in any position. Both the lifting keel and the swiveling keel, for example, screws can be arranged at the upper end, which create a rigid connection between the keel and keel box. The keel can be secured using a synthetic fiber line. The line can be designed so that the line acts as a predetermined breaking point when touching the ground and allows the keel to retreat to avoid damage.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Die Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

  • Figur 1 einen Ausschnitt einer Seitenansicht und eines Segelbootes mit einem als Hubkiel ausgebildeten absenkbaren und aufholbaren Kiel teilweise im Schnitt,
  • Figur 2 den Hubkiel von Figur 1 im Schnitt
  • Figur 3 einen Ausschnitt des Hubkiels im Bereich der Spindel,
  • Figur 4 die Anordnung der Druckfedern und Federkanäle und
  • Figur 5 eine weitere Ausführungsform der Federkanäle für die Druckfedern.
The invention is explained below with reference to the drawing. Show it:
  • FIG. 1 shows a section of a side view and a sailboat with a lowerable and retractable keel designed as a lifting keel, partly in section,
  • Figure 2 shows the lifting keel of Figure 1 in section
  • FIG. 3 shows a section of the lifting keel in the area of the spindle,
  • Figure 4 shows the arrangement of the compression springs and spring channels and
  • Figure 5 shows another embodiment of the spring channels for the compression springs.

Das in Figur 1 dargestellte Segelboot besitzt einen als Hubkiel ausgebildeten absenkbaren und aufholbaren Kiel 1, dessen oberer Bereich 2 in einem nachfolgend als Hubkielkasten bezeichneten Kielkasten 3 geführt ist. Im dargestellten Ausführungsbeispiel verlaufen im Hubkielkasten 3 zwei als Spannelemente dienende, als Spiralfedern ausgebildete Druckfedern 4. Am Kajütdach 5 endet der Hubkielkasten 3. Im Schwerpunkt des Hubkiels 1 verläuft eine Spindel 7, die im Bereich des Kajütdaches 5 drehbar und ortsfest befestigt ist. An ihrem unteren Ende 8 greift sie am Hubkiel 1 in ein entsprechendes Gewinde ein. Durch Drehen der Spindel 7 kann der Hubkiel 1 aufgeholt oder in die hier dargestellte Stellung abgesenkt werden. Einzelheiten der Anordnung der Druckfedern 4 und der Federkanäle 10 werden später anhand von Figur 4 und Figur 5 näher erläutert.The sailboat shown in FIG. 1 has a lowerable and retractable keel 1 designed as a lifting keel, the upper area 2 of which is guided in a keel box 3, hereinafter referred to as the lifting keel box. In the exemplary embodiment shown, two compression springs 4, which serve as tensioning elements and are designed as spiral springs, run in the lifting keel box 3. The cabin roof 5 ends with the Lifting keel box 3. A spindle 7 runs in the center of gravity of lifting keel 1, which is rotatably and fixedly attached in the area of the cabin roof 5. At its lower end 8 it engages in the corresponding thread on the lifting keel 1. By turning the spindle 7, the lifting keel 1 can be made up or lowered into the position shown here. Details of the arrangement of the compression springs 4 and the spring channels 10 will be explained in more detail later with reference to FIGS. 4 and 5.

Die Zeichnung zeigt den Hubkiel 1 vollständig abgesenkt, wobei die Druckfedern 4 maximal gespannt sind. Die von beiden Druckfedern 4 auf den Hubkiel 1 insgesamt wirkende Kraft kann dem Eigengewicht des Hubkiels 1 abzüglich des vom Wasser hervorgerufenen Auftriebs entsprechen. Die Spindel 7 kann dadurch leicht von Hand, beispielsweise mittels einer an ihrem oberen Ende aufgesetzten Kurbel, betätigt werden. Die Spindel 7 ist zu diesem Zweck an ihrem oberen Ende als Vierkant 9 ausgebildet. Die Lagerung der Spindel 7 im Bereich des Kajütdaches 5 bzw. im Bereich des oberen Endes des Hubkielkastens 3 erfolgt durch Kugeldrucklager.The drawing shows the lifting keel 1 completely lowered, the compression springs 4 being maximally tensioned. The total force acting on the lifting keel 1 from the two compression springs 4 can correspond to the dead weight of the lifting keel 1 minus the buoyancy caused by the water. The spindle 7 can thereby be easily operated by hand, for example by means of a crank attached to its upper end. For this purpose, the spindle 7 is designed as a square 9 at its upper end. The spindle 7 is supported in the area of the cabin roof 5 or in the area of the upper end of the lifting keel case 3 by ball thrust bearings.

Die Druckfedern 4 sind in den im Hubkiel vorgesehenen Federkanälen 10 geführt. Ein entsprechender Spindelkanal 11 ist für die Spindel 7 vorgesehen. Die Kanäle 10 und 11 sind röhrenförmig ausgebildet und an den Durchmesser der Druckfedern 4 bzw. an den Durchmesser der Spindel 7 angepaßt.The compression springs 4 are guided in the spring channels 10 provided in the lifting keel. A corresponding spindle channel 11 is provided for the spindle 7. The channels 10 and 11 are tubular and adapted to the diameter of the compression springs 4 and the diameter of the spindle 7.

Die Druckfedern 4 können bei vollständig eingeholtem Hubkiel 1 vorgespannt sein. Außerdem besteht die Möglichkeit, die Druckfedern 4 so auszubilden, daß sie bei vollständig abgesenktem Hubkiel 1 eine größere Kraft aufnehmen als zum Anheben des Hubkiels 1 erforderlich wäre. Im letzten Bereich müßte der Hubkiel 1 in diesem Fall mittels der Spindel 7 nach unten gedrückt werden.The compression springs 4 can be pre-tensioned when the lifting keel 1 is completely retracted. In addition, there is the possibility of designing the compression springs 4 such that they absorb a greater force when the lifting keel 1 is completely lowered than would be required to lift the lifting keel 1. In the last area, the lifting keel 1 would have to be pressed down by means of the spindle 7 in this case.

Bei dem in Figur 2 dargestellten Schnitt A-B sind insbesondere das Profil des oberen Bereichs 2 des Hubkiels 1 und dessen übriges Profil 13 erkennbar. Der Hubkielkasten 3 besitzt im wesentlichen ein rechteckiges Profil 14 mit zwei rechteckförmigen Ausbuchtungen 15. In Figur 2 sind auch die röhrenförmigen Kanäle 10, 11 für die Aufnahme der Druckfedern 4 und die Spindel 7 ersichtlich.The section A-B shown in FIG. 2 shows in particular the profile of the upper region 2 of the lifting keel 1 and its remaining profile 13. The lifting keel box 3 has essentially a rectangular profile 14 with two rectangular bulges 15. In FIG. 2, the tubular channels 10, 11 for receiving the compression springs 4 and the spindle 7 can also be seen.

Am Hubkielkasten 3 sind mehrere seitlich angeordnete Schrauben 16 vorgesehen, mit denen der Hubkiel in der vollständig abgesenkten oder jeder beliebigen Stellung arretiert werden kann.A plurality of laterally arranged screws 16 are provided on the lifting keel box 3, with which the lifting keel can be locked in the fully lowered or any position.

In Figur 3 ist ein Ausschnitt dargestellt, der die Spindel 7 und das obere Ende des Hubkiels 1 gegenüber Figur 1 vergrößert zeigt. Am oberen Ende des Spindelkanals 11 besitzt dieser einen Gewindeabschnitt 17, in den die Spindel 7 eingreift.In Figure 3, a section is shown, which shows the spindle 7 and the upper end of the lifting keel 1 enlarged compared to Figure 1. At the upper end of the spindle channel 11, this has a threaded section 17, in which the spindle 7 engages.

In den Figuren 4 und 5 sind Einzelheiten der Anordnung der als Druckfedern 4 verwendeten Spiralfedern dargestellt. Deren unteres Ende 32 drückt gegen einen tellerförmigen Anschlag 33, der über eine senkrecht nach oben führende Stange 34 mit dem oberen Ende des Hubkielkastens oder mit dem Kajütdach starr verbunden ist. Das obere Ende 35 der Druckfedern 4 drückt gegen einen Anschlag 36, der starr mit dem Hubkiel 1 verbunden ist. Bei der in Figur 4 dargestellten Ausführung bildet der Anschlag 36 eine obere Abdeckung der röhrenförmigen Federkanälen 10, während bei der in Figur 5 dargestellten Ausführungsform der Anschlag 36 ein Rohr 37, das den Federkanal 10 bildet, oben begrenzt, welches in hier nicht näher dargestellter Weise mit dem Hubkiel 1 verbunden ist.FIGS. 4 and 5 show details of the arrangement of the spiral springs used as compression springs 4. The lower end 32 presses against a plate-shaped stop 33 which is rigidly connected to the upper end of the lifting keel box or to the cabin roof via a rod 34 leading vertically upwards. The upper end 35 of the compression springs 4 presses against a stop 36 which is rigidly connected to the lifting keel 1. In the embodiment shown in Figure 4, the stop 36 forms an upper cover of the tubular spring channels 10, while in the embodiment shown in Figure 5, the stop 36 delimits a tube 37, which forms the spring channel 10, which in a manner not shown here is connected to the lifting keel 1.

Der Einfacheit halber ist in Figur 5 nur eine von mehreren Druckfedern 4 dargestellt.For the sake of simplicity, only one of a plurality of compression springs 4 is shown in FIG.

Claims (7)

1. Boat with lowerable and retractable keel formed as keel (1) or as pivoted keel or as ballast keel (12), the keel of which is connected with one or more tension elements tightened by the keel when lowering by the effect of the keel's dead weight, characterized in that the keel (1) in its inner space has at least two spring channels (10) in which channels compression springs (4) are located with their upper end (35) biased to an upper stop (36) which in turn is rigidly conected with the keel (1), and which compression springs are with their lower end (32) biased to a lower stop (33) which in turn is rigidly connected with the boat.
2. Boat of claim 1, characterized in that coming from the cabin's roof a rod (34) is led through each of the compression springs (4) at its lower end having a disc constituting the lower stop (33).
3. Boat of one of the claims 1 or 2, characterized in that a stationary rotatable screw (7) is located at the upper end of the housing for the retractable keel which screw is directed downwards and connected to to the retractable keel (1) in order to lower and to retract same.
4. Boat of claim 3, characterized in that the screw (7) is extending into a screw channel (11) located in the retractable keel (1).
5. Boat of one of the foregoing claims, characterized it that the retractable keel (1) in the upper area (2) has a rectangular guiding profile to which profile the cross-section of the keel housing (3) is adapted, and that in the bottom of the boat a guiding opening is provided which opening is adapted to the profile of the led through part of the retractable keel (1).
6. Boat of one of the foregoing claims, characterized in that the keel (1) at any position is lockable by screws (16).
7. Boat of one of the claims 1, 2, 5 or 6, characterized in that the keel is retractable by means of a winch having cables or webs.
EP86100626A 1985-01-22 1986-01-18 Boat with retractable keel Expired EP0189154B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86100626T ATE39656T1 (en) 1985-01-22 1986-01-18 BOAT WITH DOWNABLE AND RAISABLE KEEL.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3501892 1985-01-22
DE3501892 1985-01-22
DE3515090 1985-04-26
DE19853515090 DE3515090A1 (en) 1985-01-22 1985-04-26 BOAT WITH LOWERING AND FOLDABLE KEEL

Publications (2)

Publication Number Publication Date
EP0189154A1 EP0189154A1 (en) 1986-07-30
EP0189154B1 true EP0189154B1 (en) 1989-01-04

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EP86100626A Expired EP0189154B1 (en) 1985-01-22 1986-01-18 Boat with retractable keel

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US (1) US4690089A (en)
EP (1) EP0189154B1 (en)
DE (1) DE3515090A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676349A5 (en) * 1988-01-21 1991-01-15 Valery Iliich Ilievsky
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CN113879482B (en) * 2021-10-29 2023-12-26 中船黄埔文冲船舶有限公司 Sectional carrying and synchronous positioning method for lifting fin support plate

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Also Published As

Publication number Publication date
EP0189154A1 (en) 1986-07-30
DE3515090C2 (en) 1988-06-09
US4690089A (en) 1987-09-01
DE3515090A1 (en) 1986-07-24

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