WO2024251810A1 - Grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques et déchets, avec une large gamme d'applications - Google Patents

Grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques et déchets, avec une large gamme d'applications Download PDF

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Publication number
WO2024251810A1
WO2024251810A1 PCT/EP2024/065456 EP2024065456W WO2024251810A1 WO 2024251810 A1 WO2024251810 A1 WO 2024251810A1 EP 2024065456 W EP2024065456 W EP 2024065456W WO 2024251810 A1 WO2024251810 A1 WO 2024251810A1
Authority
WO
WIPO (PCT)
Prior art keywords
search
recovery
flukes
holding
anchor
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.)
Ceased
Application number
PCT/EP2024/065456
Other languages
German (de)
English (en)
Inventor
Karl Thiel
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP24731549.2A priority Critical patent/EP4719888A1/fr
Publication of WO2024251810A1 publication Critical patent/WO2024251810A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/48—Means for searching for underwater objects
    • B63C11/50—Means for searching for underwater objects using grapnels

Definitions

  • Ropes, debris and wire ropes that are accidentally thrown overboard or lost in any other way can, apart from the environmental impact or economic damage that the loss of high-quality ropes can cause, also represent a latent danger to shipping, especially in temporarily very shallow waters, such as shallow tidal ports.
  • Such ports are used by motor vessels at such low water levels that the sediment on the bottom (7) is sometimes sucked up by the propeller current, and thus also sunken, lost rope, resulting in a blocked propeller.
  • Floating ropes are very easy to recover with a boat hook or directly by hand.
  • search drags or warp anchors specially manufactured for this purpose are used for searching and recovery, equipped with different numbers of flukes in different shapes, also corrugated or serrated and sometimes also collapsible, as known from FR 979 241 A.
  • What all of these known devices have in common is that they do not pinch a rope caught when being pulled over the bottom (7) or create such high frictional resistance that it does not slip through. If the rope on either side of the anchor fluke has different drag resistance when being pulled through the water, e.g. because of different rope lengths, the rope slides unnoticed over the fluke. For this reason, success is only achieved if the operator is fairly vertically above the site of discovery, e.g.
  • the two outer sheet metal tabs are each bent up and down in different directions to create an upwardly bent fluke (3) and a downwardly bent fluke (4).
  • it is sensible to bevel the flukes (3;4) towards the middle as shown in Fig.1. Rounding the rear edge reduces the risk of getting caught and getting confused when retrieving the device after accidentally getting caught in the working direction.
  • the wedge-shaped opening gaps between the pull tab (2) and the flukes (3;4) determine the degree of clamping of rope, wire rope or other debris that gets caught between them and can be easily optimized experimentally by bending. Very sharp edges of the clamp increase the holding force, but with a greater risk of damage to the rope.
  • FIG.2 shows a section from the working direction through the towing eye in the working direction (5) and through the flukes (3;4) in the working position lying on the bottom (7). This makes it clear that how the fluke (4) located underneath ploughs through the sediment of the bottom (7) (shown in dashed lines) and can thus pick up ropes sunk into the sediment.
  • the arrangement of the flukes (3;4) and the pull tab (2) relative to one another always results in a functional working position, even after turning upside down.
  • a further embodiment of the invention by applying an anti-slip coating to the flukes (3;4) and the pull tab (2) or replaceable covers made of such material is conceivable.
  • this device is also suitable for water maintenance for the regular removal of rubbish, for example in pond farms, bathing lakes or harbor basins, because old hose remnants, cables, nets and tarpaulins etc. can also be caught by this anchor.
  • an anchor If such an anchor is operated from a floating tool, it is sufficient to attach a trip line to the rear towing eyelet with a length slightly longer than the maximum working depth, with a buoy attached to the other end, which can be used to grab the trip line if the anchor gets out of position in order to recover the anchor.
  • Several of these anchors can be assembled to form complete towing gears, e.g. mounted on a towing beam.
  • the anchors are conveniently attached to the towing eyes in the working direction (5) with swivel shackles to a towing beam, which can be tared by buoys so that it floats above the bottom but cannot lift the anchor off the bottom.
  • the trip lines of the individual anchors are led aft to a beam floating on the water, the same length as the towing beam, and are attached to this with the same lateral distance from each other as the distance between the anchors on the bottom.
  • the towline is attached to a cleat on the tow beam or two individual towlines are led from the outer cams of the tow beam to the deck of the implement. This allows the entire towing gear to be kept in a clear and organized manner.
  • Sensitive installations in the open sea such as drilling rigs, production platforms, wind farms, pipelines, tidal power stations and submarine cables are preferred espionage and potential sabotage targets of foreign military powers.
  • the possibility of a radio connection for espionage activities or for remote action in the case of acts of sabotage that are not carried out by time fuses is very low.
  • the fluke opening can be adjusted very specifically to the cable diameter being searched for. Equipping the system with an indicator sensor when catching a cable is also conceivable and, given the values to be protected, also financially justifiable. Regular search trips around the objects to be protected will result in a very high probability of detecting and destroying subversive technology.
  • This anchor is a very universal tool for civil and military applications due to its low-cost production, easy handling, very flexible adaptation to different tasks and small storage volume for several units.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Emergency Lowering Means (AREA)

Abstract

La présente invention concerne un grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques, câbles et déchets, fabriqué de manière très économique à partir de feuille de métal, empilable et doté d'une très grande force de retenue, également apte à assembler des unités d'appareils de remorquage avec une pluralité de ces grappins. Réparation très facile et remplacement économique.
PCT/EP2024/065456 2023-06-05 2024-06-05 Grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques et déchets, avec une large gamme d'applications Ceased WO2024251810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24731549.2A EP4719888A1 (fr) 2023-06-05 2024-06-05 Grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques et déchets, avec une large gamme d'applications

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023002324.8 2023-06-05
DE102023002324.8A DE102023002324B3 (de) 2023-06-05 2023-06-05 Such- Bergungs- und Halteanker für Tauwerk, Drahtseile und Unrat mit breitem Anwendungsspektrum

Publications (1)

Publication Number Publication Date
WO2024251810A1 true WO2024251810A1 (fr) 2024-12-12

Family

ID=91186408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/065456 Ceased WO2024251810A1 (fr) 2023-06-05 2024-06-05 Grappin de recherche, de récupération et de retenue pour cordage, câbles métalliques et déchets, avec une large gamme d'applications

Country Status (3)

Country Link
EP (1) EP4719888A1 (fr)
DE (1) DE102023002324B3 (fr)
WO (1) WO2024251810A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4737305A1 (fr) * 2024-10-31 2026-05-06 Petroleo Brasileiro S.A. - PETROBRAS Agencement et procédé pour récupérer des amarrages cassés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858941A (en) * 1930-11-26 1932-05-17 James P Salmon Grapnel
GB1350508A (en) * 1971-11-16 1974-04-18 Fancourt R St J Grapnels
CN101780835A (zh) * 2009-10-16 2010-07-21 大连獐子岛渔业集团股份有限公司 水下设备回收器及其回收方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR979241A (fr) 1949-01-18 1951-04-24 Utilisation d'un appareil destiné à retirer du lit des cours d'eau les objets auxquels les lignes de pêche s'accrochent par l'hameçon

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1858941A (en) * 1930-11-26 1932-05-17 James P Salmon Grapnel
GB1350508A (en) * 1971-11-16 1974-04-18 Fancourt R St J Grapnels
CN101780835A (zh) * 2009-10-16 2010-07-21 大连獐子岛渔业集团股份有限公司 水下设备回收器及其回收方法

Also Published As

Publication number Publication date
DE102023002324B3 (de) 2024-06-13
EP4719888A1 (fr) 2026-04-08

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