EP0872411A2 - Zweirümpfiges Segelwasserfahrzeug - Google Patents

Zweirümpfiges Segelwasserfahrzeug Download PDF

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Publication number
EP0872411A2
EP0872411A2 EP98201159A EP98201159A EP0872411A2 EP 0872411 A2 EP0872411 A2 EP 0872411A2 EP 98201159 A EP98201159 A EP 98201159A EP 98201159 A EP98201159 A EP 98201159A EP 0872411 A2 EP0872411 A2 EP 0872411A2
Authority
EP
European Patent Office
Prior art keywords
watercraft
hulls
sail
connecting structure
mast
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.)
Withdrawn
Application number
EP98201159A
Other languages
English (en)
French (fr)
Other versions
EP0872411A3 (de
Inventor
Vincenzo Di Stolfo
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.)
STOLFO VINCENZO DI
Original Assignee
STOLFO VINCENZO DI
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 STOLFO VINCENZO DI filed Critical STOLFO VINCENZO DI
Publication of EP0872411A2 publication Critical patent/EP0872411A2/de
Publication of EP0872411A3 publication Critical patent/EP0872411A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • B63B32/55—Multihull boards, e.g. of catamaran type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/02—Collapsible, foldable, inflatable or like vessels comprising only rigid parts
    • B63B7/04—Collapsible, foldable, inflatable or like vessels comprising only rigid parts sectionalised

Definitions

  • the present invention relates to a new sail watercraft and particularly a watercraft comprising at least two flat-bottomed hulls arranged side-by-side and parallel to each other.
  • sailboats and motorboats are known in the art.
  • the sailboats can be classified according to the type and number of hulls.
  • catamarans generally have a pair of hulls, which are connected to each other in such a way, as to be parallel.
  • a watercraft such as a catamaran is practical, fast, substantially unsinkable, stable and funny-to-use, it has hulls dipping into the water, in other words it has a substantial "displacement" or draught.
  • EP-A-0012288 substantially relates to a windsurf comprising, in order to obtain a better stability thereof, two boards which are connected by a bridge.
  • the equipment is like that of a windsurf providing for a deflecting mast having a hinged and not fixed foot of the mast.
  • EP-A-0106932 relates to a watercraft, which can be converted into a catamaran with two very thick hulls dipping into the water and causing high displacement.
  • WO 84/00134 discloses a tubular structure for connecting in a side-by-side fashion two wind-surf boards but such a structure is considered completely inadequate to the use on the sea of the thus obtained watercraft.
  • the watercraft according to the present invention while has some advantageous features in common with a standard catamaran, provides for the use of hulls having a different shape allowing them to lightly dip into the water (very little displacement) and to "ride” the smallest waves or at least “cut” the highest ones.
  • This feature makes the watercraft according to the present invention suitable for sailing substantially in any condition of the sea and allows it to be nearly always in a gliding attitude with a tempered wind (from 10 to 12 knots) with an 8 m 2 sail.
  • the watercraft according to the present invention is always with its two hulls stably laying on the water and has a minimum tendency to capsize.
  • a watercraft according to the invention is set forth in independent claim 1.
  • the dependent claims set forth some other new features ofthe invention.
  • the watercraft according to the invention provides, in the preferred embodiment, two generally "thin" hulls of a type generally used in wind-surfs, which are connected to each other by a proper structure or connection assembly which further provides for a step for the keel and a support on which the fixed-foot-mast can be mounted.
  • the sail is a "free" sail, i.e. without any boom or provided with a substantially unimportant boom which can be useful only during slack, big slack and aft wind points of sails.
  • the sail height can be set along the mast according to the particular wind conditions and/or the skill or any particular need of the sailor. Generally the spanker is sheathed in the mast.
  • a rudder assembly is provided, such a rudder assembly comprising two rudders connected by a proper parallelogram structure.
  • the rudders can be resiliently upturned so that the rudders can be dipped only when required and taking them back on board for example when the watercraft is placed on a beach or the like (or anyway it is drawn to the seashore).
  • the rudders as soon as they hit the water bed, automatically lift.
  • the keel can be not fixed and can be resiliently upturned in such a way as not to protrude downwardly when it is desired (swinging arrangement).
  • the watercraft 10 comprises two hulls 12 (while the possibility of connecting a third hull is not excluded), a structure 14 connecting the two hulls 12 in which a housing 16 (which, even if not shown, can be set at a different position along the watercraft axis) for a mast 18 on which a sail 20 can be mounted, and further a step 22 for a keel 24.
  • the watercraft further comprises a rudder assembly 26 which, in the shown embodiment, comprises a pair of rudders 28 that are connected to each other by a parallelogram frame 30 and a rudder bar 42. Both the rudders can be upturned by the frame 30 as to be taken back on board or as not to be dipped into the water when desired.
  • the structure 14 further comprises, in addition to a pair of stabilizing bars 40, a pair of appendix structures 32 which, as they are extended laterally, protrude with respect to the whole shape of the watercraft and allow the person or sailor (persons or sailors) who is (are) on the watercraft, to get on the surfaces 34 subtended by the arms 36 of said appendix structures 32 in order to generate a moment counteracting the wind action by a longer arm or, in quiet sea and wind conditions, offer a very convenient seat.
  • the appendix structures slide back telescopically and/or by a hinged arrangement within the main structure 14 when they are not required.
  • the surfaces 34 can also be non continuous surfaces and can be made, for example, by subtended ropes 38 around which a further rope (not shown) can be wrapped in order to obtain a proper mesh or bearing part.
  • Such an arrangement is extremely practical, easy and lightweight but it is to be understood that many other equally convenient arrangements could be devised, without departing from the scope of protection of the present invention.
  • the shape, the thickness and the structure of the hulls are similar arguments: the feature that they must have in common is their being substantially thin and flat-bottomed so that the part which is dipped into the water, when the watercraft is used, is relatively small and above all, the hulls must be able, if required, to go through the waves.
  • the hulls can be changed to others having different characteristics, for example shorter hulls for kids and longer hulls for more than one sailor.
  • the hulls can be tilted with respect to the structure 14 plane, so that said hulls lay flat on the water when the whole watercraft is tilted because of the strength of the wind (the leeward hull).
  • the whole watercraft as preferably also its structure 14 connecting the hulls does not provide displacement, undergoes a very scarce resistance against the waves which can be thus "threaded".
  • FIGS 8 and 9 show a further embodiment of the invention.
  • an integral structure 14 is used for connecting the two hulls together.
  • the connecting structure has a "X" or "H" shape in plan top view; the ends of the structure slowly slope down and they connect to the hulls.
  • the middle part of the structure is raised with respect to the hulls and includes a step within which the keel can be threaded (as a bayonet), but such a keel could also be hinged and not fixed.
  • a pair of "wings” is provided, such wings being conveniently seats for the sailor/s.
  • the support structure of such an embodiment is conveniently made of a composite material provided with a foamed or honeycomb core in order to lighten it without giving up the required strength requirements.
  • the bridge, with or without the boards, is a very good life saving element.
  • the sailor can hook up himself to the mast as to protrude from the watercraft and counteract the wind strength in a way that is commonly known as trapeze.
  • the equipment which can be used is composed of a spanker or a spanker and a jib. While not shown through the drawings but easily inferable for a man skilled in the art, the free sail which is heaved on the mast can have different shapes and sizes but above all it can be set at a different height along the mast itself according to the conditions of the sea and the skill of the sailor.
  • the hulls can be disassembled from the connecting structure, for example by a standard male/female joint assembly: in this way the whole watercraft is easily disassembled and can be carried or such a disassembling feature can be utilized for using hulls or boards having different shapes, thickness and characteristics. Also a bolt and nut assembly can be used.
  • the hulls could also be used separately for example as surfboards or, when properly modified, as windsurf boards.
  • a watercraft according to the invention allows to sail at sea (or any other water basin) starting directly from the beach during prohibitive or impossible conditions for conventional sailboats of which the present watercraft maintains all the possible points of sails (close-hauled, traverse, slack, big slack, aft wind, etc.).
  • Proper boards and sails can allow sailing with a proper number of sailors, two or more, further along with the option of using a spinnaker.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Fats And Perfumes (AREA)
EP98201159A 1997-04-15 1998-04-11 Zweirümpfiges Segelwasserfahrzeug Withdrawn EP0872411A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI970869 1997-04-15
IT97MI000869A IT1291570B1 (it) 1997-04-15 1997-04-15 Imbarcazione a vela a doppio scafo

Publications (2)

Publication Number Publication Date
EP0872411A2 true EP0872411A2 (de) 1998-10-21
EP0872411A3 EP0872411A3 (de) 2000-11-08

Family

ID=11376891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98201159A Withdrawn EP0872411A3 (de) 1997-04-15 1998-04-11 Zweirümpfiges Segelwasserfahrzeug

Country Status (2)

Country Link
EP (1) EP0872411A3 (de)
IT (1) IT1291570B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005023633A1 (fr) * 2003-08-19 2005-03-17 Beijing Research Institute Of Sports Science Catamaran
FR2884798A1 (fr) * 2005-04-20 2006-10-27 Acremont Antoine Francois Ma D Systeme d'assemblage complet fiable et reversible permettant de transformer des flotteurs de planche a voile en bateau
NL1036890C2 (nl) * 2009-04-21 2010-10-22 H M J Dullemans Beheer B V Meerrompsvaartuig.
WO2013116100A1 (en) * 2012-01-30 2013-08-08 Google Inc. Apparatus and method for acquiring underwater images

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012288A1 (de) 1978-12-09 1980-06-25 Duetto - Surf Wassersportgeräte GmbH Schwimmbrettanordnung für ein Windsurfgerät sowie Brückeneinheit hierfür
WO1984000134A1 (en) 1982-06-29 1984-01-19 Jens Peter Jensen A rack structure for connection with at least one float member, in particular a surfboard
EP0106932A1 (de) 1982-10-22 1984-05-02 Guiseppe Poggi Boot zur abwechselnden Umgestaltung in ein Segelsurfbrett und einen Katamaran
EP0124416A1 (de) 1983-04-15 1984-11-07 Reel S.A. Umbau eines Windsurfbrettes in ein tri- oder katamaranartiges Wasserfahrzeug
EP0306697A1 (de) 1987-09-08 1989-03-15 Bernd Delvo Zubehörset für Surfbretter, Verwendung eines solchen Zubehörsets und mit dem Zubehörset erstelltes Segelfahrzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273528A (en) * 1964-07-20 1966-09-20 Michael C Kiefer Windsurfer
DE3532269A1 (de) * 1985-09-06 1987-03-12 Reinhard Wardacki Schwebeanlage fuer segler
FR2592853A1 (fr) * 1986-01-10 1987-07-17 Mercier Jean Francois Bateau de surface comportant plusieurs flotteurs
BE905910A (nl) * 1986-12-12 1987-04-01 Tirez Peter Inrichting voor het tot een geheel verbinden van twee zeilplanken.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012288A1 (de) 1978-12-09 1980-06-25 Duetto - Surf Wassersportgeräte GmbH Schwimmbrettanordnung für ein Windsurfgerät sowie Brückeneinheit hierfür
WO1984000134A1 (en) 1982-06-29 1984-01-19 Jens Peter Jensen A rack structure for connection with at least one float member, in particular a surfboard
EP0106932A1 (de) 1982-10-22 1984-05-02 Guiseppe Poggi Boot zur abwechselnden Umgestaltung in ein Segelsurfbrett und einen Katamaran
EP0124416A1 (de) 1983-04-15 1984-11-07 Reel S.A. Umbau eines Windsurfbrettes in ein tri- oder katamaranartiges Wasserfahrzeug
EP0306697A1 (de) 1987-09-08 1989-03-15 Bernd Delvo Zubehörset für Surfbretter, Verwendung eines solchen Zubehörsets und mit dem Zubehörset erstelltes Segelfahrzeug

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005023633A1 (fr) * 2003-08-19 2005-03-17 Beijing Research Institute Of Sports Science Catamaran
FR2884798A1 (fr) * 2005-04-20 2006-10-27 Acremont Antoine Francois Ma D Systeme d'assemblage complet fiable et reversible permettant de transformer des flotteurs de planche a voile en bateau
NL1036890C2 (nl) * 2009-04-21 2010-10-22 H M J Dullemans Beheer B V Meerrompsvaartuig.
WO2010123353A1 (en) * 2009-04-21 2010-10-28 H.M.J. Dullemans Beheer B.V. Multihull vessel
WO2013116100A1 (en) * 2012-01-30 2013-08-08 Google Inc. Apparatus and method for acquiring underwater images
AU2013215493A1 (en) * 2012-01-30 2014-08-21 Google Inc. Apparatus and method for acquiring underwater images
US20150002621A1 (en) * 2012-01-30 2015-01-01 Google Inc. Apparatus and Method for Acquiring Underwater Images

Also Published As

Publication number Publication date
ITMI970869A1 (it) 1998-10-15
EP0872411A3 (de) 2000-11-08
IT1291570B1 (it) 1999-01-11

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