WO2001032010A1 - Fish grading device - Google Patents
Fish grading device Download PDFInfo
- Publication number
- WO2001032010A1 WO2001032010A1 PCT/GB2000/004208 GB0004208W WO0132010A1 WO 2001032010 A1 WO2001032010 A1 WO 2001032010A1 GB 0004208 W GB0004208 W GB 0004208W WO 0132010 A1 WO0132010 A1 WO 0132010A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fish
- loop
- substantially rigid
- net
- grading device
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K75/00—Accessories for fishing nets; Details of fishing nets, e.g. structure
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
Definitions
- the present invention relates to fish grading devices and relates particularly, but not exclusively, to fish grading devices for incorporation into fishing nets.
- Fish grading devices consist of a fishing net having a mesh size such that fish above a certain size cannot swim through the net and are therefore retained in the net, while smaller fish can escape through the apertures in the net.
- Known fish grading devices of this type suffer from the disadvantage that fish can be injured by becoming snagged on the net while trying to pass through the apertures.
- Preferred embodiments of the present invention seek to overcome the above disadvantages of the prior art .
- a fish grading device comprising a framework of interconnected substantially rigid elongate members forming a plurality of loops, each said loop defining an aperture not exceeding predetermined dimensions, wherein each said loop is pivotable relative to the or each said loop adjacent thereto.
- each said substantially rigid elongate member can rotate about its longitudinal axis. This provides the advantage of minimising the risk that a fish will become snagged on one of the substantially rigid elongate members while trying to pass through one of the apertures of the device.
- Each said substantially rigid elongate member may be tubular.
- the substantially rigid elongate members may be interconnected by means of elongate flexible members.
- the or each said elongate flexible member may be a string or thread.
- the or each said elongate flexible member may form a respective loop corresponding to each said loop of said interconnected substantially rigid elongate members.
- a plurality of said loops of elongate members are each formed from four said substantially rigid elongate members.
- Each of said loops of substantially rigid elongate members is preferably substantially rectangular.
- a fishing net including a fish grading device as defined above.
- Figure 1 is a schematic elevation view of part of a fish grading device embodying the present invention
- Figure 2A is a perspective view of a first embodiment of fishing net incorporating the fish grading device of Figure 1;
- Figure 2B is an enlarged view of part of the fishing net of Figure 2A.
- Figure 3 is a schematic elevation view of a second embodiment of fishing net incorporating the fish grading device of Figure 1.
- a fish grading device 1 is formed from an array of generally rectangular apertures 2, each of which is formed by two long tubes 3 and two short tubes 4 of plastics material mounted to a loop of fishing net 5.
- Each loop of fishing net 5 is formed by crimping the ends of the loop by means of a metal crimp 6.
- Each of the tubes 3 , 4 can rotate freely about its longitudinal axis, so that a fish brushing against a tube 3, 4 will cause the tube to rotate, and will therefore avoid becoming snagged on the tube .
- Tubes 3, 4 defining two adjacent apertures will have two loops of fishing line 5 passing therethrough, for example as shown at locations 7.
- the dimensions of apertures 2 are prevented by tubes 3, 4 from being reduced, but when the device 1 is not under tension, it is relatively flexible, and can therefore be handled easily, for example would onto a reel on a fishing boat .
- a fishing net 10 for use in the commercial fishing sector is dragged by means of lines 11 by a boat (not shown) such that fish are drawn into mouth 12 of the net 10.
- the net 10 is provided with a number of panels formed by fish grading devices 1, three such panels being shown in Figure 2A, two of which are in the central location of the net 10, and one of which is at cod end 13 of the net ( Figure 2B) .
- the loops 5 of the fish grading device 1 are placed under tension, as a result of which the tubes 3, 4 are drawn closer together and the rigidity of the tubes prevents the dimensions of the apertures from reducing.
- the tube 3, 4 can rotate about its longitudinal axis, which reduces the risk of a fish becoming injured by becoming snagged on the threads of the fishing net .
- FIG 3 shows a sweep net for use in the aquaculture industry in confining fish to a selected volume of water, for example within a sea cage or shore tank system of a fish farm.
- the sweep net 20 is formed by a net 21 suspended from float 22, and incorporating a fish grading device 1 as shown in Figure 1.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Processing Of Meat And Fish (AREA)
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Mechanical Means For Catching Fish (AREA)
- Meat, Egg Or Seafood Products (AREA)
Abstract
Description
Claims
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK00973020T DK1225802T3 (en) | 1999-11-05 | 2000-11-03 | Fish sorting device |
| AU11576/01A AU766886C (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| AT00973020T ATE240638T1 (en) | 1999-11-05 | 2000-11-03 | DEVICE FOR SORTING FISH |
| JP2001534226A JP3706829B2 (en) | 1999-11-05 | 2000-11-03 | Fish sorting device |
| BR0015293-5A BR0015293A (en) | 1999-11-05 | 2000-11-03 | Fish trapping device |
| EA200200534A EA003337B1 (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| MXPA02004436A MXPA02004436A (en) | 1999-11-05 | 2000-11-03 | Fish grading device. |
| NZ518625A NZ518625A (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| US10/129,468 US7028846B1 (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| CA002389888A CA2389888C (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| APAP/P/2002/002498A AP1628A (en) | 1999-11-05 | 2000-11-03 | Fish grading device. |
| EP00973020A EP1225802B1 (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
| DE60002909T DE60002909C5 (en) | 1999-11-05 | 2000-11-03 | DEVICE FOR SORTING FISH |
| GB0100671A GB2353930C (en) | 1999-11-05 | 2001-01-11 | Fish grading device |
| IS6352A IS2188B (en) | 1999-11-05 | 2002-04-19 | Fish classification equipment |
| NO20021925A NO315301B3 (en) | 1999-11-05 | 2002-04-24 | Fish sorting device and its use |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9926195.0 | 1999-11-05 | ||
| GBGB9926195.0A GB9926195D0 (en) | 1999-11-05 | 1999-11-05 | Fish grading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001032010A1 true WO2001032010A1 (en) | 2001-05-10 |
Family
ID=10863990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB2000/004208 Ceased WO2001032010A1 (en) | 1999-11-05 | 2000-11-03 | Fish grading device |
Country Status (25)
| Country | Link |
|---|---|
| US (1) | US7028846B1 (en) |
| EP (1) | EP1225802B1 (en) |
| JP (1) | JP3706829B2 (en) |
| KR (1) | KR100551712B1 (en) |
| CN (2) | CN1292648C (en) |
| AP (1) | AP1628A (en) |
| AT (1) | ATE240638T1 (en) |
| AU (1) | AU766886C (en) |
| BR (1) | BR0015293A (en) |
| CA (1) | CA2389888C (en) |
| DE (1) | DE60002909C5 (en) |
| DK (1) | DK1225802T3 (en) |
| EA (1) | EA003337B1 (en) |
| ES (1) | ES2199876T3 (en) |
| GB (2) | GB9926195D0 (en) |
| IS (1) | IS2188B (en) |
| MA (1) | MA25564A1 (en) |
| MX (1) | MXPA02004436A (en) |
| NO (1) | NO315301B3 (en) |
| NZ (1) | NZ518625A (en) |
| OA (1) | OA12077A (en) |
| PT (1) | PT1225802E (en) |
| TR (1) | TR200201212T2 (en) |
| WO (1) | WO2001032010A1 (en) |
| ZA (1) | ZA200203300B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1927282A1 (en) * | 2006-11-28 | 2008-06-04 | Danny Gallagher | Juvenile fish excluder |
| ES2301451B1 (en) * | 2008-01-18 | 2009-03-16 | Aurelio Arrue Castillo | FISHING NETWORK FOR SMALL SIZE FISH OUTLET. |
| DE202010012571U1 (en) | 2010-09-14 | 2011-12-16 | Big Dutchman International Gmbh | Fish sorter |
| CN102349478B (en) * | 2011-08-01 | 2013-03-13 | 杨志光 | Lamplight drop net with fish classifying device and spotted silver, carp fry safe escape channel |
| CN102430526B (en) * | 2011-11-23 | 2013-05-29 | 中国水产科学研究院渔业机械仪器研究所 | Automatic grading device for catches |
| CN104396848A (en) * | 2014-12-07 | 2015-03-11 | 宁波保税区华萌生物科技有限公司 | Device for throwing in bait |
| CN104904681B (en) * | 2015-06-01 | 2017-07-21 | 中国水产科学研究院东海水产研究所 | Multiwindow serial combination type jack mackerel dragging span device |
| CN104920266B (en) * | 2015-06-23 | 2017-12-19 | 谢元莲 | A kind of monitoring method of fish culture in net pen larger fish |
| CN106962255B (en) * | 2017-03-31 | 2020-05-12 | 桂媛媛 | Eel separator |
| CN108901965A (en) * | 2018-05-08 | 2018-11-30 | 青岛博鲁泽海洋科技有限公司 | A kind of large size cage-farming classification fishes device and its large-scale net cage and method |
| CN109329156B (en) * | 2018-11-21 | 2021-01-05 | 浙江海洋大学 | A non-destructive fish suction device for purse seine culture in large area waters |
| JP7210070B2 (en) | 2019-09-30 | 2023-01-23 | 炎重工株式会社 | Apparatus for sorting aquatic organisms |
| CN113575483B (en) * | 2021-09-01 | 2022-09-13 | 哈尔滨工业大学(威海) | Sweep net structure and cylinder mould |
| CN115644119B (en) * | 2022-11-17 | 2023-10-13 | 中国水产科学研究院渔业机械仪器研究所 | Fish grading gathering and catching and bulkhead cleaning device in closed type cultivation water cabin |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR22777E (en) * | 1920-02-20 | 1921-08-23 | Leon Victor Auguste Chaumeil | Hinged metal net for dredging shells |
| FR975679A (en) * | 1947-12-02 | 1951-03-08 | Internat Machinery Corp | Method and device for sorting bodies, more particularly elongated bodies, such as fish |
| FR2342482A1 (en) * | 1976-02-27 | 1977-09-23 | Mouillard Henri | Metal grid for separating fish in fish culture process - has smooth vertical bars connected to horizontal tubes of circular or oval cross section |
| US5301450A (en) * | 1993-01-15 | 1994-04-12 | Boyd David M | Fish net with escape panel |
| WO1998025452A1 (en) * | 1996-12-09 | 1998-06-18 | Nordurnet Hf | Device for sorting out marine species in fishing trawl |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833119A (en) * | 1973-06-25 | 1974-09-03 | R Brown | Grading apparatus |
| US4086875A (en) * | 1976-09-16 | 1978-05-02 | Union Carbide Corporation | Grading live fish under water |
| US4446637A (en) * | 1980-11-28 | 1984-05-08 | Thomas Ferreira | Chafing gear for fishing drag |
| SE441511B (en) * | 1983-07-26 | 1985-10-14 | Olof Ingvar Andreasson | CHAIN NETWORK AND SET AND APPARATUS FOR MANUFACTURING THE CHAIN NET |
| JPH03284498A (en) * | 1990-03-30 | 1991-12-16 | Nippon Suisan Kaisha Ltd | Net rescue apparatus |
| US5329719A (en) * | 1993-03-09 | 1994-07-19 | Holyoak H K | Fish raceway apparatus and method |
| CN2244298Y (en) * | 1995-09-02 | 1997-01-08 | 福州市铅筛厂 | Trapping cage |
-
1999
- 1999-11-05 GB GBGB9926195.0A patent/GB9926195D0/en not_active Ceased
-
2000
- 2000-11-03 KR KR1020027005638A patent/KR100551712B1/en not_active Expired - Fee Related
- 2000-11-03 ES ES00973020T patent/ES2199876T3/en not_active Expired - Lifetime
- 2000-11-03 MX MXPA02004436A patent/MXPA02004436A/en active IP Right Grant
- 2000-11-03 DE DE60002909T patent/DE60002909C5/en not_active Expired - Lifetime
- 2000-11-03 OA OA1200200125A patent/OA12077A/en unknown
- 2000-11-03 NZ NZ518625A patent/NZ518625A/en not_active IP Right Cessation
- 2000-11-03 DK DK00973020T patent/DK1225802T3/en active
- 2000-11-03 EA EA200200534A patent/EA003337B1/en not_active IP Right Cessation
- 2000-11-03 US US10/129,468 patent/US7028846B1/en not_active Expired - Lifetime
- 2000-11-03 JP JP2001534226A patent/JP3706829B2/en not_active Expired - Fee Related
- 2000-11-03 CA CA002389888A patent/CA2389888C/en not_active Expired - Lifetime
- 2000-11-03 WO PCT/GB2000/004208 patent/WO2001032010A1/en not_active Ceased
- 2000-11-03 AT AT00973020T patent/ATE240638T1/en not_active IP Right Cessation
- 2000-11-03 CN CNB2004100623600A patent/CN1292648C/en not_active Expired - Fee Related
- 2000-11-03 TR TR2002/01212T patent/TR200201212T2/en unknown
- 2000-11-03 BR BR0015293-5A patent/BR0015293A/en not_active IP Right Cessation
- 2000-11-03 EP EP00973020A patent/EP1225802B1/en not_active Expired - Lifetime
- 2000-11-03 AP APAP/P/2002/002498A patent/AP1628A/en active
- 2000-11-03 PT PT00973020T patent/PT1225802E/en unknown
- 2000-11-03 CN CN00815253A patent/CN1387400A/en active Pending
- 2000-11-03 AU AU11576/01A patent/AU766886C/en not_active Ceased
-
2001
- 2001-01-11 GB GB0100671A patent/GB2353930C/en not_active Expired - Lifetime
-
2002
- 2002-04-19 IS IS6352A patent/IS2188B/en unknown
- 2002-04-24 NO NO20021925A patent/NO315301B3/en not_active IP Right Cessation
- 2002-04-25 ZA ZA200203300A patent/ZA200203300B/en unknown
- 2002-05-02 MA MA26622A patent/MA25564A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR22777E (en) * | 1920-02-20 | 1921-08-23 | Leon Victor Auguste Chaumeil | Hinged metal net for dredging shells |
| FR975679A (en) * | 1947-12-02 | 1951-03-08 | Internat Machinery Corp | Method and device for sorting bodies, more particularly elongated bodies, such as fish |
| FR2342482A1 (en) * | 1976-02-27 | 1977-09-23 | Mouillard Henri | Metal grid for separating fish in fish culture process - has smooth vertical bars connected to horizontal tubes of circular or oval cross section |
| US5301450A (en) * | 1993-01-15 | 1994-04-12 | Boyd David M | Fish net with escape panel |
| WO1998025452A1 (en) * | 1996-12-09 | 1998-06-18 | Nordurnet Hf | Device for sorting out marine species in fishing trawl |
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