EP0990584B1 - Marine anchor of the flat type - Google Patents

Marine anchor of the flat type Download PDF

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Publication number
EP0990584B1
EP0990584B1 EP99402369A EP99402369A EP0990584B1 EP 0990584 B1 EP0990584 B1 EP 0990584B1 EP 99402369 A EP99402369 A EP 99402369A EP 99402369 A EP99402369 A EP 99402369A EP 0990584 B1 EP0990584 B1 EP 0990584B1
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Prior art keywords
anchor
flukes
profile
anchor according
shaft
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EP99402369A
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German (de)
French (fr)
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EP0990584A1 (en
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Guy Royer
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Individual
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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 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/38—Anchors pivoting when in use
    • B63B21/44—Anchors pivoting when in use with two or more flukes

Definitions

  • arming a boat must include an anchor, the purpose of which is to hang on at the bottom of the sea so as to constitute a point of restraint.
  • the French patent application FR-A-2,690,410 discloses a demountable marine anchor having legs or shovels similar to those described in application FR-A-2,457,801 and a jas constituting the axis of articulation of the penis relative to the assembly formed by the two legs and the solid mass of rocker.
  • a special design of the rocking mass makes it possible to assemble or to easily dismount the legs, the penis and the jas.
  • the jas laterally overflows paws at the roots of their heels and, as well it has been said, it serves as the axis of articulation to the penis.
  • the weighbridge of the anchor is realized in the form of a dihedron whose two faces are full, trapezoidal and symmetrical with respect to the plane defined by the two shovels.
  • This founded is therefore a shoulder that, as soon as it is retained by a roughness of the sandy bottom, helps by its shape to tilt shovels and taking them in the bottom.
  • the face of the rock mass which is then the lowest of the two faces lie substantially flat on the bottom, but without sinking into it.
  • the anchor described in application FR-A-2,690,410 provides that both sides of the rocker bed each have a light which serves as a useful handle for the handling of the anchor and which is also used for stabilize the anchor during penetration of the shovels into the sandy bottom.
  • the edges of this light are indeed as many roughnesses between the bottom and the face of the rocking mass in contact with said bottom, these asperities improving in consequence the stability of the anchor during its penetration into the bottom.
  • the face of the rocking mass in contact with the bottom does not sink so far into this one since the solid parts of said face which surround the light prevent such depression.
  • the removable anchor described in the US patent US-A-5005508, published April 9, 1991, comprises a rocking mass in the form of pyramid trunk which consists of a single section of metal tube.
  • the four faces of this truncated pyramid, and in particular its two suitable faces, one or the other, to come in contact with the sandy bottom when shoveling shovels then when the latter sink into the bottom are full and, by way of Consequently, that of these two faces which is in contact with the bottom rests on this one without sinking.
  • anchors of the "anchor plate” type are the ones that offer the best skirmishes in the sandy bottom, and, for some of them, not cumbersome because their jas is in general short.
  • the present invention aims to optimize the realization a sea anchor, efficient, light and simple, by development of all criteria favoring deep penetration.
  • a marine anchor of the "flat anchor” type comprising, arranged symmetrically on both sides of the penis, two coplanar legs whose tips extend towards the end free anterior of the penis which contains the organeau on which the link is fixed flexible, chain or hawser, connecting the anchor to the ship.
  • the heels of the legs are connected on the one hand to a tubular profile of rectangular section forming part of a rocking mass and, on the other hand, at a rod perpendicularly crossing this section from side to side to form a together in which the posterior end of the penis is articulated around the rod.
  • the rocking mass further comprises a set of tie rods and spacers forming the edges of a pyramidal structure attached to the tubular profile and leaving completely free spaces between said profile and the rear ends of said structure.
  • the tie rods and the spacers are full or sufficiently rigid.
  • An additional feature of the anchor according to the invention is that the front edges of the faces of the profile parallel to the plane of the legs are set back from the front edges of the profile faces adjacent to said legs and are located at a distance from the stem as the angle opening of the pen relative to the legs is limited to a given value, preferably 30 °.
  • legs recalls that of a francisque who would have the rod for sleeve, or axis of symmetry.
  • the outer front parts of the legs are sharpened and the penis is profiled, having a cross-section whose dimension in one direction parallel to the rod is smaller than the dimension in the orthogonal direction.
  • a such construction of the paws, on the one hand, of the penis on the other hand concurs this time still to favor the burial of the anchor.
  • the rod constituting the axis of articulation of the pen overflowing laterally the roots of the heels of the shovels, to form a jas.
  • An additional feature of the anchor according to the above variant is that the rear ends of the structure pyramidal are seen from each end of the jas at a low angle opening, preferably 30 °.
  • the material used for the production the anchor is steel or an aluminum alloy or a plastic material and, very advantageously, the tie rods and the spacers are welded together and on said profile, or rigidly connected to each other.
  • Both forms of execution of the anchor represented have two legs 1 and 2, also called shovels, planes and coplanar, articulated on a rod 3 constituting an axis of symmetry for these tabs.
  • the two legs are secured to one another by their heels 4, which are connected on the one hand to a tubular section section 5 rectangular part of office rocking mass 6 and on the other hand to a rod 7 traversing from side to side the profile 5 to form a set on which is articulated around the rod 7, the rear end 8 of the penis 3.
  • the tubular section 5 is thus a kind of cage in which is introduced the posterior end 8 of the rod 3.
  • This profile is either a section of tube of rectangular section, obtained by the meeting of four plates arranged parallel two by two and welded together.
  • the tips 9 and 10 of the shovels 1 and 2 are turned towards the other end 11 of the penis which receives the organelle of link to the chain.
  • the flip-flop 6, in addition to the tubular section 5, is consisting of a set of tie rods 12, 13 and spacers 14 forming the edges a pyramidal structure 15 integral with this section 5 and leaving spaces completely free 16, 17 between it and the rear ends 18, 19 of the structure, as shown in detail in Figures 2, 3, 4 and 5.
  • the spacers laterally 14 are advantageously curved and concavity facing backwards from the anchor.
  • the longitudinal tie rods 13 are welded on the one hand on the front of the lateral faces 20, 21 of the profile 5 and on the other hand on spacers side 14 welded to the rear of these same side faces 20, 21.
  • the tie rods 12 connect the longitudinal tie rods 13 and the lateral spacers 14 on each side between them.
  • the transverse tie rods 12 contribute to a good rocker end. It is indeed one or other of these two tie rods 12 that will trigger the tilting the anchor forward and burying it in the bottom as soon as it goes to be held back by an asperity.
  • the space 16 or, according to, 17 left free between the tie rod transverse 12 bearing on the seabed and the back of the section 5 facilitates the penetration of the anchor in the bottom.
  • the rocking scale retains its primary function of contributing to the tipping shovels, but it does not have the disadvantage of presenting a master important couple opposing his depression.
  • the interest of such a rocking scale is that, at the time of taking, it causes the same toggle effect as that obtained with known anchors but then, at the time of deep penetration, it leaves thanks to its spaces 16 and 17 completely open a free passage nets sand and mud.
  • the rocking mass sinks in turn in the background sandy and, as a result, the anchor shovels burrow further deeper into the sandy bottom and thus reach areas more consistent.
  • the anchor according to the invention is therefore even more resistant stall.
  • the anchor is also lightened by compared to the achievements of the prior art in which the crest was constituted by an assembly of solid plates.
  • the center of gravity of the anchor according the invention is thus moved somewhat further forward, relative to a anchor in all respects identical with the exception of its rocking mass whose faces are full, and, by this simple fact, its tipping is easier and its catch in the background is faster.
  • Such a catch is also improved relative to the anchor anterior to the extent that his massive rocking can now bury itself in the bottom, thus allowing the active surfaces of the legs 1, 2 of penetrate deeper the area of the said bottom in which the substance is consistent and consistent, so more resistant.
  • the faces 22, 23 of the profile 5 parallel to the plane of the tabs 1, 2 have anterior edges 24, 25 set back from the edges anterior 26, 27 side faces 20, 21 adjacent said tabs.
  • the rod 7, on which are welded the roots of the heels 4 lugs 1 and 2 has a length greater than the total width thereof. She therefore protrudes laterally from the heels, and consequently plays the role of a jas.
  • the axis constituting the articulation of the yard 3 relative to the massif of rocker and jas are thus confused.
  • the length jas ideally depends on the height of the rock solid mass 6 which must be large enough to favor the longitudinal tilting of the legs, but low enough not to interfere with burial and to avoid tipping side of the legs, in which case a differential depression would be the cause of a lower hold of the anchor.
  • tie rods 12 and 13, spacers 14 and jas 7 having given the best results are such that the rear ends 18, 19 of the pyramidal structure 15 are seen from each end 28, 29 of jas 7 at a low opening angle, of the order of 30 °.
  • the rod 7 serves more simply to strengthen the attachment of the roots of the heels 4 of the legs 1 and 2 on the rocking mass 6 and axis of rotation of the verge 3. It has no effect on the stability of the anchor, but the whole has a larger footprint reduced possible.
  • the anchors according to the invention advantageously have a shape general, reminiscent of a Franciscan, whose neck, or axis of symmetry, would be constituted by the verge 3.
  • verge 3 is contoured, as schematically shown in Figure 4, showing the rock solid mass 6 seen from the rear, and inside the posterior end 8 of the penis 3.
  • the general shape of the cross-section of the verge 3 is that of a rhombus or a rectangle whose angles are advantageously cut.
  • All the anchors tested are 12 kg anchors, commonly used on sailing cruisers. The measures were taken in sea, on the edge of the Binic coast and at the entrance of the Port du Légué, in conditions closest to actual use, always using the same boat, a fishing vessel called "The Ideal of the Seas", equipped with a motor of 200 horses.
  • Each anchor received the same mooring chain, of the same linear weight and the same length. This chain, wet from behind, came attach to a fixed point in the middle of the boat.
  • the mooring process was identical for all anchors. The weather was the same for all tests, calm with a flat sea surface, slightly rough during the tests on a floor made of maerl.
  • a diver equipped with an underwater camera, observed underwater the behavior of each anchor so as to provide precise information on how the anchors tested worked.
  • Stalling tensions were measured using the same material, namely a mechanical dynamometer comprising a chain steel 100 meters long and 6 millimeters in diameter.
  • the anchors according to the invention are preferably constructed of A36 steel or aluminum alloy or plastic.
  • the tie rods and spacers are preferably solid rods, or less rigid, bent in appropriate form, and welded or bound securely between them.

Abstract

The marine anchor comprises two coplanar flukes (1,2) either side the shank (3). The fluke points extend to the free front end of the shank on which the anchor chain is fixed. The fluke heels (4) are connected to a rectangular tubular section (5) forming part of a heavy rocker (6) and to a rod (7) passing perpendicularly through the section. These constitute an assembly in which the rear end (8) of the shank can articulate around the rod. The heavy rocker comprises a set of tie rods (12,13) and struts (14) forming the edges of a pyramid structure (15) leaving totally free spaces (16,17) between the tubular section and the rear ends (18,19) of the structure.

Description

Comme pour tous les navires, l'armement d'un bateau de plaisance doit notamment comporter une ancre, ayant pour objet de s'accrocher au fond de la mer de manière à constituer un point de retenue.As for all ships, arming a boat must include an anchor, the purpose of which is to hang on at the bottom of the sea so as to constitute a point of restraint.

Compte tenu des contraintes d'encombrement, de légèreté et de coût auxquelles doit satisfaire cet armement, sans sacrifier à l'efficacité, on emploie de longue date des ancres dites "ancres plates".Given the constraints of space, lightness and cost to which this equipment must satisfy, without sacrificing efficiency, we have long used anchors called "flat anchors".

Celles-ci comprennent, disposées symétriquement de part et d'autre de la verge, deux pattes coplanaires, encore dénommées pelles, dont les talons se raccordent à un massif de bascule pour constituer un ensemble sur lequel s'articule l'extrémité arrière de ladite verge et dont les pointes s'étendent vers l'extrémité antérieure libre de la verge qui comporte l'organeau sur lequel se fixe le lien souple, chaíne ou aussière, raccordant l'ancre au navire.These include, arranged symmetrically on either side of the penis, two coplanar legs, still called shovels, of which the heels are connected to a rock solid mass to form a set on which articulates the rear end of said rod and whose tips extend towards the free anterior end of the penis which contains the organ on which fix the flexible link, chain or hawser, connecting the anchor to the ship.

Ces ancres, qui conviennent aussi bien pour les fonds sablonneux, du fait de l'importance des surfaces actives de leurs pelles, que pour les fonds rocheux, du fait des pointes acérées de leurs pelles, ont connu de nombreux perfectionnements depuis leur apparition.These anchors, which are equally suitable for funds sandy, because of the importance of the active surfaces of their shovels, the rocky bottoms, because of the sharp points of their shovels, have known many improvements since their appearance.

Notamment, la demande de brevet français FR-A-2.457.801, publiée le 26 décembre 1980, décrit une ancre de ce type dont les pattes ou pelles ont une forme générale rappelant celle d'une francisque. Cette géométrie particulière favorise encore davantage la tenue de l'ancre dans les fonds mous.In particular, the French patent application FR-A-2,457,801, published on December 26, 1980, describes an anchor of this type whose legs or shovels have a general shape recalling that of a franciscus. This geometry particular favors even more the holding of the anchor in the soft bottoms.

Afin de résoudre les problèmes d'encombrement, la demande de brevet français FR-A-2.690.410, publiée le 29 octobre 1993, décrit une ancre de marine démontable comportant des pattes ou pelles analogues à celles décrites dans la demande FR-A-2.457.801 et un jas constituant l'axe d'articulation de la verge relativement à l'ensemble formé par les deux pattes et par le massif de bascule. Une conception particulière du massif de bascule permet d'assembler ou de démonter facilement les pattes, la verge et le jas. Lorsque l'ancre est montée, le jas déborde latéralement des pattes au niveau des racines de leurs talons et, ainsi qu'il a été dit, il sert d'axe d'articulation à la verge.In order to solve congestion problems, the French patent application FR-A-2,690,410, published on October 29, 1993, discloses a demountable marine anchor having legs or shovels similar to those described in application FR-A-2,457,801 and a jas constituting the axis of articulation of the penis relative to the assembly formed by the two legs and the solid mass of rocker. A special design of the rocking mass makes it possible to assemble or to easily dismount the legs, the penis and the jas. When the anchor is mounted, the jas laterally overflows paws at the roots of their heels and, as well it has been said, it serves as the axis of articulation to the penis.

Dans les deux demandes de brevet français précitées, le massif de bascule de l'ancre est réalisé sous la forme d'un dièdre dont les deux faces sont pleines, trapézoïdales et symétriques par rapport au plan défini par les deux pelles. Ce massif constitue en conséquence un épaulement qui, dès qu'il est retenu par une aspérité du fond sablonneux, aide de par sa forme au basculement des pelles et à la prise de celles-ci dans le fond. Lorsque les pelles sont en prise dans le fond sablonneux, la face du massif de bascule qui est alors la plus basse des deux faces repose sensiblement à plat sur le fond, mais sans s'enfoncer dans celui-ci.In the two aforementioned French patent applications, the weighbridge of the anchor is realized in the form of a dihedron whose two faces are full, trapezoidal and symmetrical with respect to the plane defined by the two shovels. This massif is therefore a shoulder that, as soon as it is retained by a roughness of the sandy bottom, helps by its shape to tilt shovels and taking them in the bottom. When the shovels are engaged in the sandy bottom, the face of the rock mass which is then the lowest of the two faces lie substantially flat on the bottom, but without sinking into it.

L'ancre décrite dans la demande FR-A-2.690.410 prévoit que les deux faces du massif de bascule présentent chacune une lumière qui sert utilement de poignée pour la manutention de l'ancre et qui sert en outre à stabiliser l'ancre au cours de la pénétration des pelles dans le fond sablonneux. Les bords de cette lumière constituent en effet autant d'aspérités entre le fond et la face du massif de bascule en contact avec ledit fond, ces aspérités améliorant en conséquence la stabilité de l'ancre au cours de sa pénétration dans le fond. La face du massif de bascule en contact avec le fond ne s'enfonce pas pour autant dans celui-ci puisque les parties pleines de ladite face qui entourent la lumière empêchent un tel enfoncement.The anchor described in application FR-A-2,690,410 provides that both sides of the rocker bed each have a light which serves as a useful handle for the handling of the anchor and which is also used for stabilize the anchor during penetration of the shovels into the sandy bottom. The edges of this light are indeed as many roughnesses between the bottom and the face of the rocking mass in contact with said bottom, these asperities improving in consequence the stability of the anchor during its penetration into the bottom. The face of the rocking mass in contact with the bottom does not sink so far into this one since the solid parts of said face which surround the light prevent such depression.

On sait par ailleurs que, plus les pelles s'enfoncent dans le fond sablonneux, plus elles accèdent à une matière dense et consistante, donc plus résistante au glissement et au décrochage de l'ancre. La forme des pelles concourt alors avantageusement à une bonne prise de l'ancre puisque leurs surfaces actives sont au plus près des pointes, donc au plus profond du sol dans sa partie consistante.We also know that the more the shovels sink in the sandy bottom, the more they access a dense and consistent material, therefore more resistant to sliding and stalling of the anchor. The shape of the shovels then advantageously contributes to a good catch of the anchor since their active surfaces are closer to the tips, so deep in the ground in its consistent part.

D'autres modes de réalisation du massif de bascule, permettant de monter les éléments amovibles de l'ancre sont connus de l'état de la technique.Other embodiments of the rocker mass, to mount the removable elements of the anchor are known from the state of the technical.

Le brevet américain US-A-4.763.597, publié le 16 août 1988, décrit un massif de bascule se présentant sous la forme d'une boíte parallélépipèdique, comportant à l'intérieur des moyens pour fixer les pattes solidaires du jas et la verge.U.S. Patent No. 4,763,597, issued Aug. 16, 1988, describes a rock solid mass in the form of a box parallelepipedic, having inside means for fixing the legs solidarity with jas and penis.

L'ancre démontable décrite dans le brevet américain US-A-5005508, publié le 9 avril 1991, comporte un massif de bascule en forme de tronc de pyramide qui est constitué d'une seule section de tube métallique. Les quatre faces de ce tronc de pyramide, et notamment ses deux faces aptes, l'une ou l'autre, à venir en contact avec le fond sablonneux lors du basculement des pelles puis lors de l'enfoncement de ces dernières dans le fond sont pleines et, par voie de conséquence, celle de ces deux faces qui est en contact avec le fond repose sur celui-ci sans s'enfoncer.The removable anchor described in the US patent US-A-5005508, published April 9, 1991, comprises a rocking mass in the form of pyramid trunk which consists of a single section of metal tube. The four faces of this truncated pyramid, and in particular its two suitable faces, one or the other, to come in contact with the sandy bottom when shoveling shovels then when the latter sink into the bottom are full and, by way of Consequently, that of these two faces which is in contact with the bottom rests on this one without sinking.

Selon l'état de la technique rappelé ci-dessus, de nombreux perfectionnements ont rendu les ancres de type "ancre plate" efficaces, car ce sont celles qui offrent les meilleurs accrochages dans les fonds sablonneux, et, pour certaines d'entre elles, peu encombrantes car leur jas est en général court.According to the state of the art recalled above, many improvements have made anchors of the "anchor plate" type efficient, because they are the ones that offer the best skirmishes in the sandy bottom, and, for some of them, not cumbersome because their jas is in general short.

DESCRIPTION GÉNÉRALE DE L'INVENTIONGENERAL DESCRIPTION OF THE INVENTION

La présente invention vise à optimiser la réalisation d'une ancre de marine, efficace, légère et simple, par développement de tous les critères favorisant la pénétration profonde.The present invention aims to optimize the realization a sea anchor, efficient, light and simple, by development of all criteria favoring deep penetration.

Elle a plus précisément pour objet une ancre de marine du type "ancre plate", comprenant, disposées symétriquement de part et d'autre de la verge, deux pattes coplanaires dont les pointes s'étendent vers l'extrémité antérieure libre de la verge qui comporte l'organeau sur lequel se fixe le lien souple, chaíne ou aussière, raccordant l'ancre au navire.It more precisely relates to a marine anchor of the "flat anchor" type, comprising, arranged symmetrically on both sides of the penis, two coplanar legs whose tips extend towards the end free anterior of the penis which contains the organeau on which the link is fixed flexible, chain or hawser, connecting the anchor to the ship.

Selon des caractéristiques additionnelles connues de ce type d'ancre, les talons des pattes se raccordent d'une part à un profilé tubulaire de section rectangulaire faisant partie d'un massif de bascule et, d'autre part, à une tige traversant perpendiculairement ce profilé de part en part pour constituer un ensemble dans lequel l'extrémité postérieure de la verge s'articule autour de la tige.According to additional features known from this type of anchor, the heels of the legs are connected on the one hand to a tubular profile of rectangular section forming part of a rocking mass and, on the other hand, at a rod perpendicularly crossing this section from side to side to form a together in which the posterior end of the penis is articulated around the rod.

La caractéristique essentielle de l'ancre de marine selon l'invention est que le massif de bascule comporte de plus un ensemble de tirants et d'entretoises formant les arêtes d'une structure pyramidale solidaire du profilé tubulaire et laissant des espaces totalement libres entre ledit profilé et les extrémités arrière de ladite structure.The essential characteristic of the marine anchor according to the invention is that the rocking mass further comprises a set of tie rods and spacers forming the edges of a pyramidal structure attached to the tubular profile and leaving completely free spaces between said profile and the rear ends of said structure.

De tels espaces favorisent donc encore davantage l'enfouissement de l'ancre, dont les pelles peuvent ainsi pénétrer encore plus profondément dans le fond et atteindre des zones encore davantage consistantes, d'où une amélioration de la tenue de l'ancre après sa prise. En effet, les espaces totalement libres du massif de bascule permettent le passage des filets de sable et de la vase du fond sablonneux, donc un enfouissement encore plus profond des pelles de l'ancre, puisque le frein créé par les parties pleines des faces des massifs de bascule de toutes les ancres connues est éliminé dans l'ancre conforme à l'invention.Such spaces therefore further promote the burial of the anchor, whose shovels can thus penetrate even more deeply in the background and reach even more consistent areas, hence an improvement in the holding of the anchor after taking. Indeed, the spaces completely free from the rocking mass allow the passage of sand nets and of silt from the sandy bottom, thus an even deeper burial of shovels of the anchor, since the brake created by the solid parts of the faces of the massifs of all known anchors is eliminated in the anchor according to the invention.

De préférence, les tirants et les entretoises sont pleins ou suffisamment rigides.Preferably, the tie rods and the spacers are full or sufficiently rigid.

Une caractéristique additionnelle de l'ancre selon l'invention est que les bords antérieurs des faces du profilé parallèles au plan des pattes sont en retrait par rapport aux bords antérieurs des faces du profilé adjacentes auxdites pattes et sont situés à une distance telle de la tige que l'angle d'ouverture de la verge par rapport aux pattes est limité à une valeur donnée, préférentiellement 30°.An additional feature of the anchor according to the invention is that the front edges of the faces of the profile parallel to the plane of the legs are set back from the front edges of the profile faces adjacent to said legs and are located at a distance from the stem as the angle opening of the pen relative to the legs is limited to a given value, preferably 30 °.

De façon très avantageuse, la forme générale des pattes rappelle celle d'une francisque qui aurait la verge pour manche, ou axe de symétrie.Very advantageously, the general form of legs recalls that of a francisque who would have the rod for sleeve, or axis of symmetry.

Selon encore d'autres caractéristiques de l'ancre selon l'invention, les parties antérieures extérieures des pattes sont affûtées et la verge est profilée, présentant une section droite dont la dimension dans une direction parallèle à la tige est inférieure à la dimension dans la direction orthogonale. Une telle construction des pattes, d'une part, de la verge d'autre part concourt cette fois encore à favoriser l'enfouissement de l'ancre.According to still other characteristics of the anchor according to the invention, the outer front parts of the legs are sharpened and the penis is profiled, having a cross-section whose dimension in one direction parallel to the rod is smaller than the dimension in the orthogonal direction. A such construction of the paws, on the one hand, of the penis on the other hand concurs this time still to favor the burial of the anchor.

Selon une variante de réalisation de l'ancre selon l'invention, la tige constituant l'axe d'articulation de la verge déborde latéralement les racines des talons des pelles, afin de constituer un jas.According to an embodiment variant of the anchor according to the invention, the rod constituting the axis of articulation of the pen overflowing laterally the roots of the heels of the shovels, to form a jas.

Une caractéristique supplémentaire de l'ancre conforme à la variante précitée est que les extrémités arrière de la structure pyramidale sont vues de chaque extrémité du jas sous un angle de faible ouverture, préférentiellement 30°.An additional feature of the anchor according to the above variant is that the rear ends of the structure pyramidal are seen from each end of the jas at a low angle opening, preferably 30 °.

De préférence, le matériau utilisé pour la réalisation de l'ancre est de l'acier ou un alliage d'aluminium ou encore un matériau plastique et, de manière très avantageuse, les tirants et les entretoises sont soudés entre eux et sur ledit profilé, ou liés rigidement entre eux.Preferably, the material used for the production the anchor is steel or an aluminum alloy or a plastic material and, very advantageously, the tie rods and the spacers are welded together and on said profile, or rigidly connected to each other.

BRÈVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

  • La Figure 1a est une vue de dessus d'une première variante de l'ancre de marine selon l'invention, présentant un jas court.Figure 1a is a top view of a first variant of the marine anchor according to the invention, having a short jas.
  • La Figure 1b est une vue de dessus d'une seconde variante de réalisation sans jas.Figure 1b is a top view of a second variant embodiment without jas.
  • La Figure 2 est une vue de dessus de la partie arrière de l'ancre de la Figure 1a ou 1b.Figure 2 is a top view of the rear section of the anchor of Figure 1a or 1b.
  • Les Figures 3 et 4 sont respectivement une vue de côté et une vue de dos de la même partie.Figures 3 and 4 are respectively a side view and a back view of the same part.
  • La Figure 5 est une vue en perspective de la partie arrière de l'ancre à jas représentée à la Figure 1a.Figure 5 is a perspective view of the part rear of the anchor shown in Figure 1a.

    • DESCRIPTION DES FORMES D'EXÉCUTION PRÉFÉRÉES DE L'INVENTIONDESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

    Les références aux Figures 1a et 1b serviront à expliquer les différentes caractéristiques de l'invention.References to Figures 1a and 1b will be used to explain the different features of the invention.

    Les deux formes d'exécution de l'ancre représentées comportent deux pattes 1 et 2, encore dénommées pelles, planes et coplanaires, articulées sur une verge 3 constituant un axe de symétrie pour ces pattes.Both forms of execution of the anchor represented have two legs 1 and 2, also called shovels, planes and coplanar, articulated on a rod 3 constituting an axis of symmetry for these tabs.

    Les deux pattes sont solidaires l'une de l'autre par leurs talons 4, lesquels se raccordent d'une part à un profilé 5 tubulaire de section rectangulaire faisant pour partie office de massif de bascule 6 et d'autre part à une tige 7 traversant de part en part le profilé 5 pour constituer un ensemble sur lequel s'articule, autour de la tige 7, l'extrémité postérieure 8 de la verge 3. Le profilé tubulaire 5 constitue ainsi une sorte de cage dans laquelle est introduite l'extrémité postérieure 8 de la verge 3. Ce profilé est soit un tronçon de tube de section rectangulaire, soit obtenu par la réunion de quatre plaques disposées parallèlement deux à deux et soudées entre elles. Les pointes 9 et 10 des pelles 1 et 2 sont tournées vers l'autre extrémité 11 de la verge qui reçoit l'organeau de liaison à la chaíne.The two legs are secured to one another by their heels 4, which are connected on the one hand to a tubular section section 5 rectangular part of office rocking mass 6 and on the other hand to a rod 7 traversing from side to side the profile 5 to form a set on which is articulated around the rod 7, the rear end 8 of the penis 3. The tubular section 5 is thus a kind of cage in which is introduced the posterior end 8 of the rod 3. This profile is either a section of tube of rectangular section, obtained by the meeting of four plates arranged parallel two by two and welded together. The tips 9 and 10 of the shovels 1 and 2 are turned towards the other end 11 of the penis which receives the organelle of link to the chain.

    Le massif de bascule 6, outre le profilé tubulaire 5, est constitué d'un ensemble de tirants 12, 13 et d'entretoises 14 formant les arêtes d'une structure pyramidale 15 solidaire de ce profilé 5 et laissant des espaces totalement libres 16, 17 entre celui-ci et les extrémités arrière 18, 19 de la structure, ainsi que le montrent en détail les Figures 2, 3, 4 et 5. Les entretoises latérales 14 sont avantageusement courbes et de concavité tournée vers l'arrière de l'ancre.The flip-flop 6, in addition to the tubular section 5, is consisting of a set of tie rods 12, 13 and spacers 14 forming the edges a pyramidal structure 15 integral with this section 5 and leaving spaces completely free 16, 17 between it and the rear ends 18, 19 of the structure, as shown in detail in Figures 2, 3, 4 and 5. The spacers laterally 14 are advantageously curved and concavity facing backwards from the anchor.

    Les tirants longitudinaux 13 sont soudés d'une part sur l'avant des faces latérales 20, 21 du profilé 5 et d'autre part sur des entretoises latérales 14 soudées à l'arrière de ces mêmes faces latérales 20, 21. Les tirants transversaux 12 relient les tirants longitudinaux 13 et les entretoises latérales 14 de chaque côté entre eux.The longitudinal tie rods 13 are welded on the one hand on the front of the lateral faces 20, 21 of the profile 5 and on the other hand on spacers side 14 welded to the rear of these same side faces 20, 21. The tie rods 12 connect the longitudinal tie rods 13 and the lateral spacers 14 on each side between them.

    Outre qu'ils assurent une résistance suffisante à l'ensemble de l'ancre, les tirants transversaux 12 contribuent à une bonne bascule frontale. C'est en effet l'un ou l'autre de ces deux tirants 12 qui va déclencher le basculement de l'ancre vers l'avant et son enfouissement dans le fond dès qu'il va être retenu par une aspérité.In addition to ensuring sufficient resistance to the anchor assembly, the transverse tie rods 12 contribute to a good rocker end. It is indeed one or other of these two tie rods 12 that will trigger the tilting the anchor forward and burying it in the bottom as soon as it goes to be held back by an asperity.

    L'espace 16 ou, selon, 17 laissé libre entre le tirant transversal 12 en appui sur le fond marin et l'arrière du profilé 5 facilite la pénétration de l'ancre dans le fond. En effet, grâce à cette structure pyramidale maillée, le massif de bascule conserve sa fonction première de contribuer au basculement des pelles, mais il n'a pas l'inconvénient de présenter un maítre couple important s'opposant à son enfoncement.The space 16 or, according to, 17 left free between the tie rod transverse 12 bearing on the seabed and the back of the section 5 facilitates the penetration of the anchor in the bottom. Indeed, thanks to this pyramidal structure mesh, the rocking scale retains its primary function of contributing to the tipping shovels, but it does not have the disadvantage of presenting a master important couple opposing his depression.

    Autrement dit, l'intérêt d'un tel massif de bascule est que, au moment de la prise, il provoque le même effet de bascule que celui obtenu avec les ancres connues mais que, ensuite, au moment de la pénétration profonde, il laisse grâce à ses espaces 16 et 17 totalement ouverts un libre passage des filets de sable et de vase. Le massif de bascule s'enfonce donc à son tour dans le fond sablonneux et, par voie de conséquence, les pelles de l'ancre s'enfouissent encore plus profondément dans le fond sablonneux et atteignent ainsi des zones davantage consistantes. L'ancre selon l'invention est donc encore plus résistante au décrochage.In other words, the interest of such a rocking scale is that, at the time of taking, it causes the same toggle effect as that obtained with known anchors but then, at the time of deep penetration, it leaves thanks to its spaces 16 and 17 completely open a free passage nets sand and mud. The rocking mass sinks in turn in the background sandy and, as a result, the anchor shovels burrow further deeper into the sandy bottom and thus reach areas more consistent. The anchor according to the invention is therefore even more resistant stall.

    De plus, l'ancre se trouve également allégée par rapport aux réalisations de l'art antérieur dans lesquelles le massif était constitué par un assemblage de plaques pleines. Le centre de gravité de l'ancre selon l'invention est donc déplacé encore quelque peu vers l'avant, relativement à une ancre en tous points identiques à l'exception de son massif de bascule dont les faces sont pleines, et, de ce simple fait, son basculement est plus facile et sa prise dans le fond est plus rapide. Une telle prise est également améliorée relativement à l'ancre antérieure dans la mesure où son massif de bascule peut désormais s'enfouir dans le fond, permettant d'autant aux surfaces actives des pattes 1, 2 de pénétrer plus profondément la zone dudit fond dans laquelle la matière est cohérente et consistante, donc plus résistante.In addition, the anchor is also lightened by compared to the achievements of the prior art in which the massif was constituted by an assembly of solid plates. The center of gravity of the anchor according the invention is thus moved somewhat further forward, relative to a anchor in all respects identical with the exception of its rocking mass whose faces are full, and, by this simple fact, its tipping is easier and its catch in the background is faster. Such a catch is also improved relative to the anchor anterior to the extent that his massive rocking can now bury itself in the bottom, thus allowing the active surfaces of the legs 1, 2 of penetrate deeper the area of the said bottom in which the substance is consistent and consistent, so more resistant.

    Les faces 22, 23 du profilé 5 parallèles au plan des pattes 1, 2 présentent des bords antérieurs 24, 25 en retrait par rapport aux bords antérieurs 26, 27 des faces latérales 20, 21 adjacentes auxdites pattes.The faces 22, 23 of the profile 5 parallel to the plane of the tabs 1, 2 have anterior edges 24, 25 set back from the edges anterior 26, 27 side faces 20, 21 adjacent said tabs.

    Le débattement de la verge 3 autour de la tige 7 est ainsi limité par les butées constituées par ces bords antérieurs 24, 25 lesquels sont avantageusement chanfreinés de façon à constituer une face d'appui pour la verge. Ce débattement est de l'ordre de 30° de part et d'autre du plan des pattes 1, 2.The movement of the rod 3 around the rod 7 is thus limited by the stops constituted by these front edges 24, 25 which are advantageously chamfered so as to form a bearing surface for the penis. This deflection is of the order of 30 ° on either side of the plane of the legs 1, 2.

    Dans la première forme d'exécution de l'invention représentée à la Figure 1a, la tige 7, sur laquelle sont soudés les racines des talons 4 des pattes 1 et 2, a une longueur supérieure à la largeur totale de celles-ci. Elle déborde donc latéralement des talons, et joue en conséquence le rôle d'un jas. Dans cette variante, l'axe constituant l'articulation de la verge 3 relativement au massif de bascule et le jas sont ainsi confondus.In the first embodiment of the invention shown in Figure 1a, the rod 7, on which are welded the roots of the heels 4 lugs 1 and 2, has a length greater than the total width thereof. She therefore protrudes laterally from the heels, and consequently plays the role of a jas. In this variant, the axis constituting the articulation of the yard 3 relative to the massif of rocker and jas are thus confused.

    Un compromis est réalisé entre une stabilité latérale de l'ancre que l'on souhaite importante, assurée par un jas long, et un encombrement de l'ancre d'autant plus réduit que le jas est court. La longueur idéale du jas dépendra en fait de la hauteur du massif de bascule 6 qui doit être suffisamment grande pour favoriser le basculement longitudinal des pattes, mais assez faible pour ne pas gêner l'enfouissement et pour éviter le basculement latéral des pattes, auquel cas un enfoncement différentiel serait la cause d'une tenue moindre de l'ancre.A compromise is made between lateral stability anchor that we wish important, provided by a long jas, and a clutter of the anchor all the more reduced as the jas is short. The length jas ideally depends on the height of the rock solid mass 6 which must be large enough to favor the longitudinal tilting of the legs, but low enough not to interfere with burial and to avoid tipping side of the legs, in which case a differential depression would be the cause of a lower hold of the anchor.

    Les dimensions relatives des tirants 12 et 13, des entretoises 14 et du jas 7 ayant donné les meilleurs résultats sont telles que les extrémités arrière 18, 19 de la structure pyramidale 15 sont vues à partir de chaque extrémité 28, 29 du jas 7 sous un angle de faible ouverture, de l'ordre de 30°.The relative dimensions of tie rods 12 and 13, spacers 14 and jas 7 having given the best results are such that the rear ends 18, 19 of the pyramidal structure 15 are seen from each end 28, 29 of jas 7 at a low opening angle, of the order of 30 °.

    Dans la seconde forme d'exécution de l'invention, la tige 7 sert plus simplement à renforcer la fixation des racines des talons 4 des pattes 1 et 2 sur le massif de bascule 6 et d'axe de rotation de la verge 3. Elle n'a pas d'effet sur la stabilité de l'ancre, mais l'ensemble a un encombrement le plus réduit possible.In the second embodiment of the invention, the rod 7 serves more simply to strengthen the attachment of the roots of the heels 4 of the legs 1 and 2 on the rocking mass 6 and axis of rotation of the verge 3. It has no effect on the stability of the anchor, but the whole has a larger footprint reduced possible.

    Dans les deux cas, telles qu'elles sont représentées sur les Figures 1a et 1b, les ancres selon l'invention ont avantageusement une forme générale qui rappelle celle d'une francisque, dont le manche, ou axe de symétrie, serait constitué par la verge 3.In both cases, as represented on 1a and 1b, the anchors according to the invention advantageously have a shape general, reminiscent of a Franciscan, whose neck, or axis of symmetry, would be constituted by the verge 3.

    Cette forme, qui n'est en aucun cas limitative puisque la particularité de l'invention se situe au niveau des espaces totalement libres 16, 17 créés dans le massif de bascule, a on le sait pour avantage de contribuer à donner aux ancres un meilleur accrochage et une meilleure stabilité.This form, which is in no way limiting since the particularity of the invention lies in completely free spaces 16, 17 created in the rock mass, it is known to benefit from contributing to give the anchors a better grip and a better stability.

    Toujours dans le but de favoriser davantage l'enfoncement dans le fond de ce type d'ancres en forme de francisque, les parties antérieures extérieures 30 et 31 des pattes 1 et 2 sont avantageusement affûtées. Dans le même but, la verge 3 est profilée, comme le montre schématiquement la Figure 4, représentant le massif de bascule 6 vu de l'arrière, et à l'intérieur l'extrémité postérieure 8 de la verge 3. La forme générale de la section droite de la verge 3 est celle d'un losange ou d'un rectangle dont les angles sont avantageusement coupés.Always with the aim of furthering the depression in the bottom of this type of franciscan anchors, the parts outer front 30 and 31 of the legs 1 and 2 are advantageously sharpened. For the same purpose, verge 3 is contoured, as schematically shown in Figure 4, showing the rock solid mass 6 seen from the rear, and inside the posterior end 8 of the penis 3. The general shape of the cross-section of the verge 3 is that of a rhombus or a rectangle whose angles are advantageously cut.

    A la suite d'essais comparatifs qui se sont déroulés le 29 septembre 1998 sous le contrôle de la Direction Marine du Bureau Veritas, en France en Baie de Saint-Brieux, l'efficacité de l'ancre selon l'invention et la confirmation de ses performances largement supérieures à celles des ancres connues s'expriment de manière éclatante à la lecture des résultats suivants :

  • A/ Essais sur fond de sable compact, à une profondeur de 5 mètres
  • 1) Ancre Britany
    Ancre accrochée, tension de décrochage 400 Kg
  • 2) Ancre CQR
    Ancre accrochée, tension de décrochage 500 Kg
  • 3) Ancre Bruce
    L'ancre ne croche pas, tension 0
  • 4) Ancre Fortress
    Ancre accrochée, tension maximale sans décrochage 1 490 Kg
  • 5) Ancre selon l'invention
    Ancre accrochée, tension de décrochage 1 350 Kg
  • B/ Essais sur fond vaseux avant le port du Légué
  • 1) Ancre Britany
    Ancre accrochée, tension de décrochage 450 Kg
  • 2) Ancre CQR
    Ancre accrochée, tension de décrochage 600 Kg
  • 3) Ancre Bruce
    Ancre accrochée, tension de décrochage 500 Kg
  • 4) Ancre Fortress
    Ancre accrochée après avoir été trainée, tension de décrochage 1 250 Kg
  • 5) Ancre selon l'invention
    Ancre accrochée en prise immédiate, tension de décrochage 800 Kg
  • C/ Essais sur fond recouvert de maerl et de gravillons
  • 1) Ancre Fortress
    Après plusieurs tentatives, l'ancre ne s'est pas accrochée.
  • 2) Ancre selon l'invention
    Ancre accrochée en prise immédiate, tension de décrochage 400 Kg
  • 3) Ancre Bruce
    Ancre légèrement accrochée, tension de décrochage 250 Kg
    • Following comparative tests carried out on 29 September 1998 under the control of Bureau Veritas Marine Division, in France in the Bay of Saint-Brieux, the effectiveness of the anchor according to the invention and the confirmation of its performance far superior to that of the known anchors are expressed in a striking way on reading the following results:
  • A / Tests on a bottom of compact sand, at a depth of 5 meters
  • 1) Britany anchor
    Anchor hooked, stalling tension 400 Kg
  • 2) CQR Anchor
    Anchor hooked, stalling tension 500 Kg
  • 3) Bruce Anchor
    Anchor does not quench, tension 0
  • 4) Fortress Anchor
    Anchor hooked, maximum tension without stall 1 490 Kg
  • 5) Anchor according to the invention
    Anchor hooked, stalling tension 1,350 Kg
  • B / Tests on muddy bottom before the wearing of the Légué
  • 1) Britany anchor
    Anchor hooked, stalling tension 450 Kg
  • 2) CQR Anchor
    Anchor hooked, stalling tension 600 Kg
  • 3) Bruce Anchor
    Anchor hooked, stalling tension 500 Kg
  • 4) Fortress Anchor
    Anchor hooked up after being dragged, stalling tension 1,250 Kg
  • 5) Anchor according to the invention
    Anchor hooked in immediate catch, stalling tension 800 Kg
  • C / Tests on a background covered with maerl and chippings
  • 1) Fortress Anchor
    After several attempts, the anchor did not catch.
  • 2) Anchor according to the invention
    Anchor hooked in immediate catch, stalling tension 400 Kg
  • 3) Bruce Anchor
    Anchor slightly hooked, stalling tension 250 Kg

    • Ces essais sont résumés dans le tableau suivant, également établi par le Bureau Veritas.

    Figure 00090001
    These tests are summarized in the following table, also prepared by Bureau Veritas.
    Figure 00090001

    Toutes les ancres testées sont des ancres de 12 kg, couramment utilisées sur des voiliers de croisières. Les mesures on été prises en mer, aux abords de la côte de Binic et à l'entrée du Port du Légué, dans des conditions les plus proches d'une utilisation réelle, en utilisant toujours le même bateau, un navire de pêche dénommé "L'Idéal des Mers", équipé d'un moteur de 200 chevaux. Chaque ancre recevait la même chaíne de mouillage, d'un même poids linéaire et d'une même longueur. Cette chaíne, mouillée par l'arrière, venait se fixer à un point fixe au milieu du bateau. Le procédé de mouillage était identique pour toutes les ancres. Le temps était le même pour tous les essais, calme avec une surface de la mer plate, légèrement houleuse pendant les essais sur un sol constitué de maerl.All the anchors tested are 12 kg anchors, commonly used on sailing cruisers. The measures were taken in sea, on the edge of the Binic coast and at the entrance of the Port du Légué, in conditions closest to actual use, always using the same boat, a fishing vessel called "The Ideal of the Seas", equipped with a motor of 200 horses. Each anchor received the same mooring chain, of the same linear weight and the same length. This chain, wet from behind, came attach to a fixed point in the middle of the boat. The mooring process was identical for all anchors. The weather was the same for all tests, calm with a flat sea surface, slightly rough during the tests on a floor made of maerl.

    Un plongeur, équipé d'une caméra sous-marine, observait sous l'eau le comportement de chaque ancre de manière à fournir des informations précises sur la façon dont travaillaient les ancres testées.A diver, equipped with an underwater camera, observed underwater the behavior of each anchor so as to provide precise information on how the anchors tested worked.

    Les tensions de décrochage étaient mesurées à l'aide du même matériel, à savoir un dynamomètre mécanique comprenant une chaíne en acier de 100 mètres de longueur et de 6 millimètres de diamètre.Stalling tensions were measured using the same material, namely a mechanical dynamometer comprising a chain steel 100 meters long and 6 millimeters in diameter.

    Les ancres selon l'invention sont de préférence construites en acier A36 ou en alliage d'aluminium ou encore en matière plastique. Les tirants et entretoises sont de préférence des tiges pleines, ou du moins suffisamment rigides, coudées selon la forme appropriée, et soudées ou liées solidement entre elles.The anchors according to the invention are preferably constructed of A36 steel or aluminum alloy or plastic. The tie rods and spacers are preferably solid rods, or less rigid, bent in appropriate form, and welded or bound securely between them.

    Comme il va de soi, l'invention ne se limite pas aux seuls modes d'exécution ci-dessus, donnés à titre d'exemple ; elle embrasse, au contraire, toutes les variantes possibles de réalisation.It goes without saying that the invention is not limited to only modes of execution above, given by way of example; she kisses, at contrary, all possible variants of implementation.

    Claims (10)

    1. Marine anchor of the "flat" type, consisting of two coplanar flukes (1, 2), located symmetrically on either side of the shaft (3), the points (9, 10) of which flukes extend to the free front extremity (11) of said shaft (3) containing the ring to which the flexible link, chain or hawser, connecting the anchor to the ship, is fixed, and the heels (4) of which flukes are connected on one hand to a tubular profile (5) of rectangular section forming part of a bascule mass (6), and on the other hand to a stem (7) passing at right angles straight through the said profile (5) to make a whole in which the rear extremity (8) of the shaft (3) is articulated around the stem (7) ;
         characterised in that the bascule mass (6) contains a set of struts (12, 13) and crosspieces (14) forming the ridges of a pyramidal structure (15) solid with the profile (5) and allowing completely free spaces (16, 17) between the said profile (5) and the rear extremities (18, 19) of the said structure (15).
    2. Anchor according to claim 1, characterised in that the struts (12, 13) and the crosspieces (14) are solid.
    3. Anchor according to either of claims 1 and 2,
      characterised in that the front edges (24, 25) of the faces (22, 23) of the profile (5) running parallel to the plane of the flukes (1, 2) are positioned back from the front edges (26, 27) of the faces (20, 21) of the profile (5) adjacent to the flukes and are located at such a distance from the stem (7) that the angle of opening of the shaft (3) in relation to the flukes (1, 2) is limited to a given value, preferably 30°.
    4. Anchor according to any of claims 1 to 3,
      characterised in that the general shape of the flukes (1, 2) is similar to that of a battleaxe, with the shaft (3) as its handle or axis of symmetry.
    5. Anchor according to any of Claims 1 to 4,
      characterised in that the outer front parts (30, 31) of the flukes (1, 2) are sharpened.
    6. Anchor according to any of Claims 1 to 5,
      characterised in that the shaft (3) has a profile of straight section of which the dimension in a direction parallel to the stem (7) is less than the dimension in an orthogonal direction.
    7. Anchor according to any of Claims 1 to 6,
      characterised in that the struts (12, 13) and crosspieces (14) are welded to each other and onto the profile (5) or connected together rigidly.
    8. Anchor according to any of Claims 1 to 7,
      characterised in that the stem (7) making up the axis of articulation of the shaft (3) protrudes laterally over the roots of the heels (4) of the flukes (1, 2) in order to produce a stock.
    9. Anchor according to Claim 8, characterised in that the rear extremities (18, 19) of the pyramidal structure (15) are viewed from each extremity (28, 29) of the stock (7) with a low-opening angle, preferably 30°.
    10. Anchor according to any of Claims 1 to 9,
      characterised in that the material of which it is made is steel, an aluminium alloy or a plastic.
    EP99402369A 1998-09-28 1999-09-28 Marine anchor of the flat type Expired - Lifetime EP0990584B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9812110 1998-09-28
    FR9812110A FR2786460B1 (en) 1998-09-28 1998-09-28 "FLAT ANCHOR" TYPE ANCHOR

    Publications (2)

    Publication Number Publication Date
    EP0990584A1 EP0990584A1 (en) 2000-04-05
    EP0990584B1 true EP0990584B1 (en) 2005-12-14

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    ID=9530927

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99402369A Expired - Lifetime EP0990584B1 (en) 1998-09-28 1999-09-28 Marine anchor of the flat type

    Country Status (4)

    Country Link
    EP (1) EP0990584B1 (en)
    AT (1) ATE312751T1 (en)
    DE (1) DE69928883D1 (en)
    FR (1) FR2786460B1 (en)

    Family Cites Families (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AU3205871A (en) * 1971-08-05 1973-02-08 STANLEY CYRIL FLETCHER and AUDREY MARIE FLETCHER An anchor
    NL163474C (en) * 1974-11-06 1980-09-15 Petrus Josef Klaren HARDLESS ANCHOR.
    FR2457801A1 (en) 1979-05-31 1980-12-26 Royer Guy IMPROVEMENTS ON MARINE ANCHORS
    US4763597A (en) 1987-04-20 1988-08-16 Jss Scientific Corporation Folding anchor
    US5005508A (en) 1989-09-20 1991-04-09 The Crosby Company Anchor assembly
    US5140931A (en) * 1991-09-30 1992-08-25 Jaquith Industries, Inc. Kedge anchor with multiple stop means
    FR2690410B1 (en) 1992-04-23 1997-04-25 Guy Royer FLAT ANCHOR OF THE FLAT AND DISASSEMBLY TYPE.

    Also Published As

    Publication number Publication date
    FR2786460A1 (en) 2000-06-02
    FR2786460B1 (en) 2001-04-06
    ATE312751T1 (en) 2005-12-15
    EP0990584A1 (en) 2000-04-05
    DE69928883D1 (en) 2006-01-19

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