FR2474990A1 - Pneumatic boat with inflatable booms extended rearwards and upwards - to stabilise the boat if the bow becomes raised - Google Patents

Pneumatic boat with inflatable booms extended rearwards and upwards - to stabilise the boat if the bow becomes raised Download PDF

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Publication number
FR2474990A1
FR2474990A1 FR8002364A FR8002364A FR2474990A1 FR 2474990 A1 FR2474990 A1 FR 2474990A1 FR 8002364 A FR8002364 A FR 8002364A FR 8002364 A FR8002364 A FR 8002364A FR 2474990 A1 FR2474990 A1 FR 2474990A1
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France
Prior art keywords
boat
transom
tubes
raised
canoe
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Granted
Application number
FR8002364A
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French (fr)
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FR2474990B1 (en
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Granted 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 
    • 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 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B63B7/08—Inflatable
    • B63B7/082—Inflatable having parts of rigid material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B39/061—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water by using trimflaps, i.e. flaps mounted on the rear of a boat, e.g. speed boat

Abstract

Inflatable boat has twin inflatable booms, which meet at the bow and which are linked by a transom at the rear of a rigid or semi-rigid base. Improvement is that the booms each extend further than usual behind the transom and end in a zone which normally rides clear of the water. The added length is provided to stabilise the boat as the bow is lifted by wave and/or wind action, to inhibit capsizing. Pref. the extended boom profiles comprise a cylindrical section ending in a conic section. The cylindrical section may be inclined upwards at 10-30 deg., to minimise the increase in wetted area when the boat is riding level. Arrangement is esp. for boats having lightweight hull section made from aluminium tubing supporting a fabric impregnated with epoxy resin.

Description

L'invention est relative aux canots pneumatiques, notamment de sauvetage, qui comportent deux flotteurs ou stabilisateurs pneumatiques latéraux réunis en pointe à l'avant et recevant entre eux une coque rigide ou une toile raidie, par exemple par un plancher. The invention relates to inflatable boats, in particular lifeboats, which comprise two lateral pneumatic floats or stabilizers joined in a point at the front and receiving between them a rigid hull or a stiffened canvas, for example by a floor.

Dans leur zone arribre, les flotteurs sont runes par un panneau transversal sensiblement vertical, ou tableau arrière, constituant la limite arrière de l'habitacle du canot. In their landing area, the floats are run by a substantially vertical transverse panel, or transom, constituting the rear limit of the cabin of the boat.

Au-delà du tableau arribre, les flotteurs s'tendent vers l'arrière d'habitude sur une courte distance, pour se terminer en pointe. Cette partie extrême des flotteurs est dans le prolongement des flotteurs respectifs et se trouve donc toujours dans l'eau. Beyond the table, the floats usually extend backwards for a short distance, ending in a point. This extreme part of the floats is an extension of the respective floats and is therefore always in the water.

L'invention a pour but de perfectionner ces canots en pré- voyant des moyens qui permettent de renforcer leur stabilit, notamment en cas de cabrage du canot lors de son soulèvement par une vague ou même lorsqu'il perce une vague. The object of the invention is to improve these canoes by providing means which make it possible to reinforce their stability, in particular in the event of the boat rearing up when it is lifted by a wave or even when it is piercing a wave.

A cet effet, le canot selon l'invention est caractérisé par le fait qu'au-delà du tableau arrière, chaque flotteur comporte vers l'arrière un prolongement dont au moins la partie arribre extrême est relevé pour être normalement hors de contact avec l'eau et pour constituer un patin d'appui en cas de cabrage du canot. To this end, the canoe according to the invention is characterized in that, beyond the transom, each float comprises towards the rear an extension of which at least the end portion is raised to be normally out of contact with the water and to form a support pad in the event of the boat rearing up.

Grave au fait que le prolongement est relevez on renforce la stabilit longitudinale du canot en ne diminuant pas la manoeu vrabilit du canot lors des virages et sans augmenter le volume immergé. Serious with the fact that the extension is raised, the longitudinal stability of the canoe is reinforced by not reducing the boat's maneuverability during turns and without increasing the submerged volume.

Avantageusement7 les flotteurs ainsi constitues sont assemblés à une coque qui est constituer par une charpente tubulaire recevant une toile renforce. Les tubes de la charpente s'étendent longitudinalement par rapport au canot; ils sont réunis à l'arrib- re au tableau arrière et, à l'avant, ils sont réunis en pointe relevé. Advantageously7 the floats thus formed are assembled with a shell which is constituted by a tubular frame receiving a reinforced fabric. The frame tubes extend longitudinally relative to the boat; they are joined at the rear transom and, at the front, they are joined at the raised point.

On comprendra bien l'invention à la lecture de la description qui va suivre et en référence au dessin annexez dans lequel:
Fig.1 est une vue latérale d'un canot selon l'invention; et
Fig.2 est une vue en plan du canot de la fig.1
Le canot représenté sur les figures comporte, de manière connue, deux flotteurs ou stabilisateurs pneumatiques latéraux 1 qui sont runes en pointe à l'avant pour former un V, un U ou un fer à cheval. La partie suprieure avant des flotteurs 1 est recouverte d'un panneau 2 aboutissant vers l'carrière à un parebrise 3.The invention will be clearly understood on reading the description which follows and with reference to the appended drawing in which:
Fig.1 is a side view of a boat according to the invention; and
Fig.2 is a plan view of the canoe of Fig.1
The canoe shown in the figures comprises, in a known manner, two lateral pneumatic floats or stabilizers 1 which are pointed at the front to form a V, a U or a horseshoe. The upper front part of the floats 1 is covered with a panel 2 leading towards the quarry to a windshield 3.

Les flotteurs sont constitués de toute manière voulue; c'est ainsi qu'ils peuvent comporter des compartiments sUparVs et/ou être au moins partiellement remplis d'une multitude de petits ballons faisant partie d'une feuille de support dans ce dernier cas, les flotteurs prsentent des fermetures à glissière tanches pour l'introduction et l'enlèvement de la feuille. The floats are formed in any desired manner; thus they can include compartments sUparVs and / or be at least partially filled with a multitude of small balloons forming part of a support sheet in the latter case, the floats have sealed zippers for the introduction and removal of the sheet.

Les flotteurs 1 sont assujettis à un habitacle central 4 qui constitue également la coque 5. L'habitacle est limitez à l'arrière par un panneau transversal 6, sensiblement vertical, formant tableau arrière et servant de support au moteur horsbord. Le tableau arrière 6 est ventuellement rabattable. On décrira plus loin une ralisation prefOrentielle de la coque 5. The floats 1 are subject to a central cockpit 4 which also constitutes the hull 5. The cockpit is limited at the rear by a transverse panel 6, substantially vertical, forming a transom and serving as a support for the outboard engine. The transom 6 can be folded down. A prefOrential realization of the hull 5 will be described later.

Selon l'invention, chaque flotteur 1 comporte vers l'arriè- re, au-delà du tableau arrière 6, un prolongement 7 dont au moins la partie arrière extrême est relevée per rapport à l'axe de la partie horizontale des flotteurs pour être normalement hors de contact avec l'eau et pour constituer, en cas de cabrage du canot, sous l'effet des vagues, un patin d'appui renforçant la stabilité longitudinale du canot. According to the invention, each float 1 comprises towards the rear, beyond the transom 6, an extension 7 of which at least the extreme rear part is raised relative to the axis of the horizontal part of the floats to be normally out of contact with water and to constitute, in the event of a nose-up of the boat, under the effect of the waves, a support pad reinforcing the longitudinal stability of the boat.

De prEfrence, le prolongement 7 comporte, à partir du tableau 6 et vers l'arribre, une partie 8 cylindrique de même axe que la partie adjacente avant du flotteur associ, une partie cylindrique 9 incline vers le haut, par exemple de 700 a 300, et une partie terminale 10 en forme de cône d'axe horizontal. Preferably, the extension 7 comprises, from table 6 and towards the arribre, a cylindrical part 8 of the same axis as the adjacent front part of the associated float, a cylindrical part 9 inclines upwards, for example from 700 to 300 , and a terminal portion 10 in the form of a cone with a horizontal axis.

Quand le canot avance, une faible fraction de la partie 9 et toute la partie 10 sont normalement hors de l'eau, de sorte que le prolongement 7 ne nuit ni à l'avancement, ni à la manoeuvrabilité dans les virages. When the boat is moving, a small fraction of part 9 and all of part 10 are normally out of the water, so that the extension 7 does not affect either the advance or the maneuverability when cornering.

Par contre, quand le canot se cabre dangereusement, en passant sur ou dans les vagues, le cabrage permet aux prolongements 7 de venir dans l'eau et de constituer des patins souples qui limitent le cabrage et Svitent un retournement longitudinal. On the other hand, when the canoe rears dangerously, while passing over or in the waves, the nose-up allows the extensions 7 to come into the water and to constitute flexible pads which limit the nose-up and avoid a longitudinal reversal.

Suivant une caractEristique avantageuse de l'invention, la coque 5 est constitué par une charpente tubulaire 11 sur laquelle est tendue et/ou fixpe une toile traite 12. L'ensemble est assujetti de manière étanche aux flotteurs. According to an advantageous characteristic of the invention, the shell 5 is constituted by a tubular frame 11 on which is stretched and / or fixed a treated fabric 12. The assembly is secured in a sealed manner to the floats.

La charpente 11 est par exemple à base d'aluminium. Elle comporte des tubes longitudinaux 13, dans l'ensemble parallbles, dont l'un forme étrate ou quille. Les tubes 13 sont noyas à l'ar rikre dans le tableau 6, tandis qu'à l'avant, ils sont relevas et sont réunis en pointe, comme montré en 14. The frame 11 is for example based on aluminum. It comprises longitudinal tubes 13, all of which are parallel, one of which is a choke or keel shape. The tubes 13 are embedded in the rear in table 6, while at the front, they are raised and are joined in a point, as shown in 14.

La toile 12 est par exemple dispose sous la charpente 11. The fabric 12 is for example placed under the frame 11.

On peut la réaliser en tissu connu sous le nom commercial de
KEVLAR, renforcé par une résine époxy.It can be made of fabric known under the trade name of
KEVLAR, reinforced with epoxy resin.

Un plancher (non représenté) peut être posé sur la charpente 11.  A floor (not shown) can be laid on the frame 11.

Claims (9)

REVENDICATIONS 1.- Canot pneumatique, comportant deux flotteurs ou stabilisateurs pneumatiques latéraux réunis en pointe à l'avant et recevant entre eux un habitacle limité à l'arrière par un panneau transversal sensiblement vertical, ou tableau arrière, caractérisé par le fait qu'au-delà du tableau arrière (6), chaque flotteur (1) comporte vers l'arrière un prolongement (7) dont au moins la partie arribre extrême (10) est relevé pour être normalement hors de contact avec l'eau et pour constituer un patin d'appui en cas de cabrage du canot. 1.- Inflatable boat, comprising two lateral pneumatic floats or stabilizers joined in a point at the front and receiving between them a cabin limited at the rear by a substantially vertical transverse panel, or transom, characterized in that beyond the transom (6), each float (1) comprises towards the rear an extension (7) of which at least the end portion (10) is raised to be normally out of contact with water and to constitute a skid support in the event of nose-up of the boat. 2.- Canot selon la revendication 1, caractérisé par le fait que le prolongement (7) comporte, vers l'arrière à à partir du tableau arribre (6), une première partie cylindrique (8) coaxiale à la partie adjacente du flotteur, une partie cylindrique (9) relevé vers l'arribre, et une pointe extrême (10). 2. A canoe according to claim 1, characterized in that the extension (7) comprises, towards the rear from the leveling table (6), a first cylindrical part (8) coaxial with the adjacent part of the float, a cylindrical part (9) raised towards the arribre, and an extreme point (10). 3.- Canot selon la revendication 2, caractEris par le fait que la pointe (10) est un cône d'axe parallèle à la partie (8). 3. A boat according to claim 2, characterized in that the tip (10) is a cone with an axis parallel to the part (8). 4.- Canot selon l'une des revendications 1 à 3, caractEris par le fait que l'habitacle comporte une coque (5) difinie par une charpente tubulaire (11), notamment à base d'aluminium, recouverte d'une toile traite (12). 4. Canoe according to one of claims 1 to 3, characterized in that the passenger compartment comprises a shell (5) defined by a tubular frame (11), in particular based on aluminum, covered with a treated canvas (12). 5.- Canot selon la revendication 4, caractérisé par le fait que la charpente (11) comporte des tubes (13) dans l'ensemble parallèles, l'un des tubes (13) formant quille et/ou étrate. 5. A boat according to claim 4, characterized in that the frame (11) comprises tubes (13) generally parallel, one of the tubes (13) forming a keel and / or choke. 6.- Canot selon la revendication 5, caractérisé par le fait que les tubes (i3) sont noys à l'arrière dans le. tableau arrière (6). 6. Canoe according to claim 5, characterized in that the tubes (i3) are embedded in the rear. rear panel (6). 7.- Canot selon l'une des revendications 5 et 6, caracté- ris par le fait qu'à l'avant, les tubes (13) sont releva et réunes en pointe. 7. Canoe according to one of claims 5 and 6, characterized in that at the front, the tubes (13) are raised and joined in a point. 8.- Canot selon l'une des revendications 4 à 7, caractéris par le fait que la toile (12) est un tissu renforcé par une rEsi- ne, notamment une rsine Çpoxy. 8. Canoe according to one of claims 4 to 7, characterized in that the fabric (12) is a fabric reinforced by a resin, in particular a Çpoxy resin. 9.- Canot selon l'une des revendications 4 à 8, caractEris par le fait que la toile-(12) est disposée sous la charpente (11).  9. Canoe according to one of claims 4 to 8, characterized in that the canvas (12) is arranged under the frame (11).
FR8002364A 1980-02-04 1980-02-04 Pneumatic boat with inflatable booms extended rearwards and upwards - to stabilise the boat if the bow becomes raised Granted FR2474990A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8002364A FR2474990A1 (en) 1980-02-04 1980-02-04 Pneumatic boat with inflatable booms extended rearwards and upwards - to stabilise the boat if the bow becomes raised

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8002364A FR2474990A1 (en) 1980-02-04 1980-02-04 Pneumatic boat with inflatable booms extended rearwards and upwards - to stabilise the boat if the bow becomes raised

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FR2474990A1 true FR2474990A1 (en) 1981-08-07
FR2474990B1 FR2474990B1 (en) 1984-01-20

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE278344C (en) *
DE532611C (en) * 1928-06-20 1931-09-01 Hermann Hillmann Floats for watercraft
GB735063A (en) * 1952-09-25 1955-08-10 Fairey Aviat Co Ltd Improvements relating to ships
FR1377554A (en) * 1963-09-27 1964-11-06 Nautique Sportive Deflector for outboard motor boats and boats with use
US3416171A (en) * 1966-09-19 1968-12-17 Georges Bertrand Leon Hennebutte Surf-boat with air-floats
US3812805A (en) * 1972-10-12 1974-05-28 Vector Co Inflatable pontoon boat
FR2253661A1 (en) * 1973-12-10 1975-07-04 Clement Michel Light ground effect craft - has aircraft engine in trough shape housing producing a venturi effect
FR2318780A1 (en) * 1975-07-21 1977-02-18 Metzeler Kautschuk PNEUMATIC BOAT, ESPECIALLY INTENDED FOR USE ON RIVERS OR OTHER WATERS
FR2323573A1 (en) * 1975-09-10 1977-04-08 Hennebutte Georges Lightweight shallow draught craft - is driven by air propeller mounted overhead, and has stabilising foils and blades

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE278344C (en) *
DE532611C (en) * 1928-06-20 1931-09-01 Hermann Hillmann Floats for watercraft
GB735063A (en) * 1952-09-25 1955-08-10 Fairey Aviat Co Ltd Improvements relating to ships
FR1377554A (en) * 1963-09-27 1964-11-06 Nautique Sportive Deflector for outboard motor boats and boats with use
US3416171A (en) * 1966-09-19 1968-12-17 Georges Bertrand Leon Hennebutte Surf-boat with air-floats
US3812805A (en) * 1972-10-12 1974-05-28 Vector Co Inflatable pontoon boat
FR2253661A1 (en) * 1973-12-10 1975-07-04 Clement Michel Light ground effect craft - has aircraft engine in trough shape housing producing a venturi effect
FR2318780A1 (en) * 1975-07-21 1977-02-18 Metzeler Kautschuk PNEUMATIC BOAT, ESPECIALLY INTENDED FOR USE ON RIVERS OR OTHER WATERS
FR2323573A1 (en) * 1975-09-10 1977-04-08 Hennebutte Georges Lightweight shallow draught craft - is driven by air propeller mounted overhead, and has stabilising foils and blades

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FR2474990B1 (en) 1984-01-20

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