WO2000001225A2

WO2000001225A2 - Fishing device, fishing device kit and method for disinfect fishing devices

Info

Publication number: WO2000001225A2
Application number: PCT/FI1999/000585
Authority: WO
Inventors: Armas IKÄVALKO
Original assignee: Ikaevalko Armas
Priority date: 1998-07-02
Filing date: 1999-07-01
Publication date: 2000-01-13
Also published as: SE0004691D0; SE0004691L; DK200001948A; WO2000001225A3; AU5039799A

Abstract

A fishing device kit comprises fishing devices (301) and a fishing device box (200). The fishing devices (301) are immersible and collapsible into a compact state which can be accommodated in the fishing device box (200). The fishing device box (200) comprises a frame portion (201) made in one piece of waterproof material and adapted to receive the fishing devices (310) included in the fishing device kit, so that, when the frame portion is filled with water, the fishing devices contained therein are and remain totally immersed in water. The fishing device comprises a first (701), a second (702) and a third (703) plate-like and rectangular part, which can be shifted relative to one another into a first position and a second position, the first, second and third plate-like part defining a given threedimensional space in the first position and the first, second and third plate-like part being parallel in the second position.

Description

Fishing device, fishing device kit and method for disinfect fishing devices

The invention relates to a fishing device and to a fishing device kit comprising a fishing device box for carrying and storing fishing devices and a specific number of fishing devices. The invention also relates to a method for disinfecting fishing devices. In this patent application, the term "fishing" implies the catching of any animals living at least partly in the water.

In some water systems, fishing devices are at risk of being contaminated with infectious agents, which, in turn, may contaminate the animals of another water system, whereby the consequences for the fishing potential of this second water system may be disastrous. This patent application deals with crayfishing as an example of fishing, the fishing devices being crayfish pots. Crayfishing involves the special problem of crayfish pest, which is easily spread by contaminated, not desinfected pots from one water system to another, rapidly extirpating the crayfish in the contaminated water. In order to prevent the spreading of crayfish pest, crayfishers are required to disinfect their pots before transferring them to another water system, however, the disinfecting of crayfish pots by conventional methods being onerous, it is frequently neglected.

Crayfish are commonly caught with a crayfish pot, a term which stands for the purpose of use rather than the mechanical structure. A simple crayfish pot consists of a round circle bent from a stiff metal wire and having a diameter in the range from 20 to 40 cm, with a net stretched in the centre and provided with a lifting strap which keeps the ring in horizontal position while it is gripped. The bait is fixed in the middle of the net and the pot is lowered into the water to a position visible from the water surface. When the crayfisher sees a crayfish crawling onto the net to catch the bait, he lifts the pot with the crayfish to the surface and retrieves the crayfish. Such a crayfish pot obviously requires continuous supervising.

There are also prior art crayfish pots functioning without supervision in the way of a fish trap, into which the crayfish crawls and is subsequently prevented from finding its way out by a specific gate arrangement. To provide the desired function, such crayfish pots should be tridimensional in shape, tending to cause problems in packaging the pots into a shape compact enough for transport and storage. Figures la and lb show a structural principle of a crayfish pot which aims at solving the problem of transport and storage space. A crayfish pot 100 consists of two bucket- shaped sections 101 and 102 made of a stiff net and hinged to one another at a given point 103 at the upper edge of the "bucket". The bottom of one or both of the "buckets" is provided with a funnel-like gate 104, whose edges extend inside the crayfish pot. When the crayfish pot is in the position shown in figure la and the bait has been placed within it, it can be sunk into the water. The crayfish enters the pot through gate 104, the shape and small size of the gate mouth preventing it from leaving the pot. After the use, the pot halves are swung into the position shown in figure lb, allowing a plurality of identical crayfish pots to be stacked on top of each other for transport and storage.

Nevertheless, the crayfish pot of figures la and lb involves several drawbacks. Despite the stacking possibility, the pots require relatively large space during transport and storage. Due to its circular cross-section, the pot readily starts rolling on the bottom if placed in flowing water. Also, the disinfection of the pots would require a relatively large vessel in order to allow even a small number of pots to be simultaneously completely immersed in the disinfection solution. This issue is particularly important, because the pots should be disinfected each time before being taken to a new spot in order to prevent the spreading of crayfish diseases.

The object of the present invention is to provide a solution for facilitating the disinfection of fishing devices, especially crayfish pots. The invention aims particularly to rninimise the bother caused to fishers by disinfection.

The purposes of the invention are achieved by providing collapsible fishing devices which are flat in the collapsed state and by providing a fishing device box which is waterproof and which accommodates the fishing devices in their collapsed state, the same box being usable for the transport, storage and disinfection of the fishing devices. In addition, the purposes of the invention are better achieved by providing the fishing devices as a kit, of which all the fishing devices or a notable part of them can be placed simultaneously in the fishing device box for disinfection.

The fishing device of the invention comprises a first, second and third plate-like part, which can be mutually shifted into a first position and a second position, the first, second and third plate-like part defining in the first position a specific tridimensional space and the first, second and third plate-like part being parallell in the second position. The trap is characterised by the fact that the tridimensional space defined by the first, second and tiiird plate-like part in the first position is triangular in cross-section in a plane substantially perpendicular to the first, second and third plate-like part.

The fishing device kit of the invention comprises fishing devices and a fishing device box. It is characterised by the fact that the fishing devices are immersible and collapsible into a compact shape which allows them to be placed in the fishing device box, and that the fishing device box comprises a continuous frame portion made of a waterproof material adapted to accommodate the fishing devices included in the kit, so that when the frame portion, is filled with water, the fishing devices contained in it are and remain completely immersed in the water.

The invention also relates to a method for disinfecting the fishing devices in a fishing device kit. It is characterised by comprising steps in which

- the fishing devices in the kit are folded down and are placed in a collapsed state in the frame portion of the fishing device box included in the kit,

- the frame portion of the fishing device box is filled with water until the collapsed fishing devices contained in it are entirely covered with water and

- a disinfecting agent is added to the water contained in the frame portion of the fishing device box.

The invention is based on the idea of enabling the fishing devices to be folded down into such a compact shape that they can be accommodated in a waterproof box. A preferred box in accordance with the invention is manufactured by injection- moulding plastic with the frame portion made in one piece. Another preferred box in accordance with the invention is made from watertight fabric, so that it requires only a small space when empty. The collapsed fishing devices are placed in the box, which is filled with a disinfecting solution, which may be a chemical solution or hot water. The devices and the disinfecting solution can be kept in the box over the entire duration of the sMfting of fishing spot. The box being waterproof, the disinfecting solution is prevented from leaking to a not desired location during transport, for instance in the boot of a car. Of course, the invention does not require the box with the fishing devices to be conveyed anywhere, allowing the disinfection to be performed on the spot, i.e. at the lake or river where one wishes to do the fishing.

The invention is advantageously applicable to several different fishing devices, exemplified by a crayfish pot in this patent application. In accordance with the invention, a crayfish pot consists of relatively stiff, plate-like elements joined to one another at the edges with hinges and/or releasable mechanical joints, preferably with "snap fasteners", in which two matching fastening shapes made of a specific material interlock owing to the elasticity of the material. Relative stiffness implies that the elements are not deformed despite the light mechanical stress caused for instance by flowing water or the lifting of a crayfish pot containing many crayfish at one or two points. The plate-like shape implies that the dimension of the element in two mutually perpendicular directions is notable greater than the dimension of the element in a third direction perpendicular to the two first directions.

The plate-like elements of the crayfish pot can be shifted relative to one another into at least two positions, the first of which is the "transport position" and the second the "operative position". In the transport position, all the plate-like elements of the crayfish pot are substantially parallel, the crayfish pot fitted in transport position having a flat shape. This allows even a relatively large number of crayfish pots to be accommodated in the fishing device box for transport and/or disinfection. In the operative position, the crayfish pot has a given tridimensional shape, like an essentially closed body, except for one or more gates, through which the crayfish can enter the pot. As described below, the gates are designed such that it is difficult or impossible for a crayfish which is in the pot to get out through the gate.

The crayfish pot elements are preferably netlike, part of the edge being encircled by a given circumference and part of the central part consisting of a plurality of wires or ribs spaced by open meshes. In terms of production techniques, it is advantageous to manufacture each element from one material in one single operation step, although this requirement does not restrict the invention. Even the entire crayfish pot may be manufactured from one material in one single step. A preferred manufacturing method is injection moulding from various plastic materials, such as polyethylelene, polypropylene and many other kinds of thermoplastics.

In a particularly preferred embodiment of the invention, the crayfish pot in operative position is shaped as a triangular prism in cross-section, whose sides comprise rectangular, elongated plates and whose triangular ends comprise a gate configuration consisting of three trapezoidal parts. Such a crayfish pot is easily and quickly foldable into a compact package. The folded crayfish pot is easily opened into operative position, in which the rectangular bottom rests solidly on the bottom of the lake or the river. Being inclined, the sides will not turn perpendicular to the water current in any situation, helping to retain the crayfish pot in position in flowing water. A plurality of flat pot packages can be placed in parallel in a vessel shaped as a rectangular prism, in which they can be transported and/or disinfected.

A preferred means of disinfection is chemical disinfection, whereby the fisher admixes a suitable chemical substance, available as tablets for instance, into the water contained in the fishing device box of the invention. To conserve remaining tablets, the preferred embodiment of the fishing device box of the invention comprises a separate partition isolated from the "frame basin" of the box in a waterproof manner. The operating characteristics of the box in accordance of the invention can be enhanced by adding specific additional features, which are explained more in detail below.

The invention is described in greater detail below with reference to preferred embodiments and to the accompanying drawings, in which

figures la and lb illustrate a prior art crayfish pot, figure 2 shows the box of a preferred embodiment of the invention with the lid opened, figure 3 shows the box of a preferred embodiment of the invention partly cut open and half filled with crayfish pots, figure 4 shows the lid of the box of a preferred embodiment of the invention, figure 5 shows the box of a second preferred embodiment of the invention partly cut open and half filled with crayfish pots, figure 6 shows a number of preferred accessories for the box of figure

2, figure 7 shows the crayfish box of a preferred embodiment of the invention in operative position, figure 8 shows the operational principle of the gate in the crayfish po of figure 7, figure 9 shows the crayfish pot of figure 7 partly opened, and figure 10 shows the crayfish pot of figure 7 in transport position.

The same reference numerals are used for corresponding parts in the figures.

Figure 2 illustrates a fishing device box 200 consisting of a frame portion 201 and lid 202. In the box shown in figure 2, the frame portion and the lid are hinged 203 t one another, and in order to tighten their joint when the lid is closed, the lid rim i surrounded by a seal 204. To keep the lid closed, the box also comprises lockin means 205, the model, size, shape and number of which can be selected b experimenting. The function of the locking means and the seal is to stop wate contained in the box from leaking in situations where the water-filled box is turne upside-down. The invention does not require the lid and the frame portion to b waterproof relative to one another, however, such waterproofness increase significantly the comfort of use of the box of the invention. Nor does it require th lid to be hinged to the frame portion, as the fastening can be performed by lockin means alone. If the lid is hinged to the frame portion, it is advantageously equippe with stoppers known per se, which prevent the lid from opening over more than maximum angle.

In a preferred embodiment of the invention, the box of figure 2 is integrated in th fishing device kit, which comprises a specific number of fishing devices, which i their collapsed condition are compact enough to be accommodated in the box o figure 2. The application discusses a collapsible crayfish pot as an example of fishing device, which in its collapsed condition has the shape of a flat rectangle Figure 3 illustrates a box according to figure 2 partly cut open and half-filled wit collapsed crayfish pots 301. In order to keep the crayfish pots in order, the inne surface of the box may comprise guide formations 302, which in this case consist o vertical ridges on the end sides of the box, each short side of a collapsed crayfis pot being inserted by sliding between two vertical ridges. It is obvious to a perso skilled in the art that a fishing device box of the invention intended for the transpo and storage of other fishing devices than collapsible crayfish pots can be equippe with precisely the guide formations required by the size and the shape of thes particular fishing devices. The vertical position of ridges 302 merely implies thei position in figure 3, and the vertical position should not be interpreted as restriction of the manufacture or use of the fishing device box of the invention i any given position. The guide formations as such are not indispensable for th invention.

When the fishing device box of the invention has been partly or completely fille with fishing devices as in figure 3, the watertightness of the frame portion of th box can be utilised by disinfecting the fishing devices within the box. The fram portion can be filled with water or a disinfecting solution before or after the fishin devices are placed in the box. The invention does not by any means restrict th order of performing any preparation of the disinfecting agent, the filling of th frame portion with disinfecting solution and placing the fishing devices into th frame portion. Assuming that the crayfish catcher wishes to disinfect the crayfish pots he has just lifted and folded down, a preferred order of operations is first filling the frame portion with water, then placing the collapsed crayfish pots in the frame portion, and finally adding the required dose of disinfecting chemical, for instance in the form of a water-soluble tablet. After this the lid can be locked into position with the aid of the locking means and the fishing device box filled with crayfish pots and disinfecting solution can be put in the boot of a car for transport to the following crayfishing spot. In this conjunction, the waterproof joint between the lid and the frame portion involves the appreciable advantage of preventing the disinfecting solution from leaking to undesired places.

Fishing has the typical feature of requiring, besides actual fishing devices (such as crayfish pots), some additional equipment such as disinfecting tablets, a fishing line, spare parts, licence documents, etc. Figure 4 shows a solution for transporting accessories in the same box used for the transport, storage and disinfection of the fishing devices. Lid 202 comprises an intermediate bottom 401, which can be fitted on top of seal edge 402 by means of locking means 403. In such an embodiment of the invention, the lid and the intermediate bottom define a separate waterproof space, where the accessories can be stored and carried. In this case as well, the invention does not require the space to be waterproof, yet watertightness provides greater comfort of use of the fishing device box, since moisture-sensitive equipment can also be stored and carried in the space for storing and carrying accessories. To keep the accessories in order, lid 202 or intermediate bottom 401 or both of these may comprise partitions 404. The figures show that the entire intermediate bottom is detached from the lid, however, the same idea can be implemented by fixing the intermediate bottom solidly to the lid and providing it with a watertight door for access to the space between the intermediate bottom and the lid.

The elements of the fishing device box illustrated in figures 2, 3 and 4 are preferably made by injection-moulding plastic, achieving several advantages. The selected material can be any plastic known per se, which is lightweight, resistant and waterproof, thus providing a box which is easy to use, reliable and substantially corrosion-proof. Injection moulding allows the parts to be easily manufactured with high dimensional precision, and then the forming of waterproof joints between the parts will not cause any problems. Injection moulding and the use of plastic materials allows various colourings and patterns to be formed, which promote the marketing of the product. For disinfection to be carried out also by means of boiling water, the parts of the fishing device box and the fishing devices should be made of a material which does not melt nor soften considerably at a temperature of 100 °C. Most of the common injection-mouldable plastics meet this requirement without problems. Vacuum and rotation processes are other potential methods of manufacture.

Figure 5 shows an optional fishing device box suitable for the transport, storage and/or disinfection of a fishing device kit consisting of fishing devices folded down in accordance with the invention. Box 501 is made of a waterproof fabric or any similar flexible, film-like material, and it has been dimensioned so as to accommodate a given number of collapsed crayfish pots 301 in their totality. For visualization, the figure shows the box partly cut open. The box has proved easiest to carry with its carrier handles 502 fixed to the box on the short side of the rectangular shape as shown in the figure. The box is also opened at this side.

Figure 6 shows a number of accessories providing additional comfort of use of the fishing device box of the invention. A box 601 for caught fish can be added underneath the frame portion 201 with any releasable mechanical joint known per se. The fish box shown in the figure is particularly suitable for the transport of living crayfish, because it is perforated with holes. For small-sized fish, a closed, waterproof fish box could be usable to carry the fish alive. Baits can also be carried in the fish box. The fish box can also be collapsible so as to be accommodated in the frame portion, allowing it to be disinfected in the same way as the fishing devices and/or making it handy to carry without fish or baits. A fish box is also conceivable which is not fixed with a releasable joint underneath the frame portion, but on one of its sides or on top of the lid. Shoulder strap 602 can be solidly fixed to frame portion 201 or it can be fixed to it with any releasable mechanical fastening means known per se. The same applies to backpack straps 603, by means of which the fishing device box of the invention can be carried on the back. If shoulder strap 602 and/or the backsack straps are removable, they may have a separate storage space in the space defined by lid 202 and the intermediate bottom fixed to this.

A fishing device box shaped as a rectangular prism alone has been discussed above, however, the same inventive idea can be applied also to the manufacture of fishing device boxes of other shapes. The shape and size of the box are determined by the shape and size of the packaged fishing devices to be carried and stored in the box. The fishing devices may for instance consist of simple crayfish pots having a circular periphery bent from a stiff metal wire and a diameter of approx. 20 to 40 cm with a net stretched in the centre and provided with an attached lifting strap. For such crayfis pots, a fishing device box with a curved lower surface can be proposed, into which the pots are piled in the way records are piled into a jukebox. For disinfection, it is crucial to size the integral frame portion of the fisliing device box so as to accommodate any desired fishing devices to a depth deep enough to be totally immersed when the frame portion is filled with water.

Figure 7 shows a crayfish pot 700 of a preferred embodiment of the invention, which, in the operative position shown, has the shape of a prism triangular in cross- section. More specifically, crayfish pot 700 comprises three plate-like, mutually equal, rectangular side parts 701, 702 and 703, each side part having two parallel long sides and two parallel short sides perpendicular to the long sides. In the operative position shown in figure 7, the side parts join one another in pairs at their long sides, forming an elongated structure with the shape of an equilateral triangle in cross-section and having a length equal to the length of a long side of one side part, the length of the side of its cross-section being equal to the length of the short side of one side part.

At both ends of the crayfish pot shown in figure 7 a gate is provided, which consists of three plate-like trapezoidal gate parts 704, 705 and 706. Each gate part has, in mutually parallel configuration, a first side and a second side, the first side having a length equal to the short side of the side part and the second side a shorter length. In addition, each gate part has a third side and a fourth side, which are not parallel and both of which are at the same angle, above 30 degrees but under 90 degrees, to the first side. Each gate part is connected at its first side to the short side of a given side part. In addition, the third side of each gate part is connected to the fourth side of the adjacent gate part, the gate parts forming together a trilateral cone with an open apex, whose narrower end is located inside the unit formed by the side parts. Figure 8 is a schematic view of how crayfish 800 enters easily through the gate, but has difficulties in getting out. For the cone formed by the gate parts to extend far enough within the unit formed by the side parts as shown in figure 8, the angle between the first side and the third or fourth side should be notably over 30 degrees. The most appropriate angle and length of the second side of the gate part (i.e. the size of the gate opening) can be found by experimenting.

The crayfish pot shown in figure 7 is easy to use and solid. The triangular cross- section provides a stiff pot which retains its shape even when exposed to mechanical stress. In principle, the crayfish pot can be placed in the water with any side part facing downwards, however, since in the embodiment of figure 7, only one side part has suspension lugs 707 for the lifting strap, it is preferably placed in the water with the suspension lugs upwards. The suspension lugs as such are not indispensable for the invention; but on the other hand, each side part can be equipped with suspension lugs if this achieves an advantage in terms of production techniques, for instance allowing all the side parts to be manufactured in the same mould. The number of suspension lugs is not crucial for the invention, however, the crayfish pot is easy to lift into equilibrium by means of two suspension lugs. With a rectangular, flat side part resting on the lake bottom, the crayfish pot sits solidly in position and is not easily brought into motion by the current. The side parts not being perpendicular to one another, the crayfish pot of figure 7 can hardly be placed in flowing water with any of its sides harmfully perpendicular to the flowing direction of the water.

For the crayfish pot of figure 7 to be collapsible into a compact shape, its parts are not solidly fixed to one another at all the edges. In a preferred embodiment of the invention, the parts are connected both by hinged joints and releasable mechanical joints, e.g. tenon and mortice joints, one part of which comprises one or more tenons and the adjoining other part comprising holes matching the tenons. Most advantageously the hinged joints are made such that parts to be connected by hinged joints are simultaneously manufactured in one single mould, the raw material being formed as at least one, thin and flexible piece connecting the parts. The entire crayfish pot can be manufactured in one operation in one single mould; smaller moulds can also be used to manufacture certain parts separately. The hinged joints can also be manufactured for instance by forming two adjacent bushings with their longitudinal axes joining in one part, and in the other part, a transverse rod at the end of a short arm is formed with a diameter substantially equal to the inner diameter of the bushings and with a length slightly longer than the distance between the bushings. The hinged joint is formed by snapping the rod ends into the bushings.

Figure 9 shows the crayfish pot of figure 7 in a position with the releasable mechanical joints between the parts released and the parts shifted relative to each other using the hinged joints so as to form a pot which is no longer closed. The hinged joints are between the second long side of the first side part 701 and the first long side of the second side part 702, between the second long side of the second side part 702 and the first long side of the third side part 703, and between the short side of each side part and the first side of the adjoining gate part. The releasable meachincal joints are between the first long side of the first side part 701 and the second long side of the third side part 703, and between the third side of each gate part and the fourth side of the adjoining gate part. The two adjacent gate parts which are still connected to one another in figure 9 may also be connected by a hinged joint.

From the position in figure 9, the crayfish pot is placed into transport position by pressing the gate parts adjoining each side part against the side part, and after this the units formed by the side part and the gate part are folded on top of each other. This results in the flat package shown in figure 10, in which the long side has a length equal to the length of the long side of the side part, the short side has a length equal to the length of the short side of the side part and a thickness essentially six times the thickness of one platelike part. The crayfish pot is repositioned in operative position by repeating the above operations in inverse order.

The crayfish pot described above in connection with figures 7 to 10 can be varied in many ways. The side parts may be of mutually different sizes so that the short sides of a given side part have a different length than the short sides of the other side parts. The side parts may also be square. In the gate parts, the first and second side are not necessarily parallel, implying that the third and fourth side are not equally long. The crayfish pot may also be provided with a gate at one end only, the other end having then only a triangular end part, which is preferably connected with a hinged joint to the short side of one side part and with releasable mechanical joints to the short sides of the same end of the other side parts. Hinged joints are not necessarily required between the parts, but all the joints may be releasable mechanical joints. The hinged joints may be such that act as hinged joint in normal use, but exposed to a somewhat greater force, which does not however break the parts, the parts connected by the hinged joint are detached from each other.

In the figures, the parts of the crayfish pot have been shown only schematically as plates, however, it is obvious to a person skilled in the art that they are most advantageously made of a net. A netlike structure allows water to flow freely through the pot, the flow resistance being low, the crayfish within the pot receiving continuously oxygen-rich water and the bait smell in the pot spreading freely into the surrounding water. The mesh size of the net should, of course, be chosen such that the animal to be caught does not pass through. The invention does not restrict the method of manufacturing the net-like structure. In one method the edges of the parts are made of plastic or metal and a net of lines or threads are made in the middle of the parts. However, this method is laborious, and a wire mesh is not very durable in use. In the embodiment of the invention considered most advantageous, the parts are made by injection moulding plasting, the edges of the parts, the nets, the fastening formations (hinges, tenons, holes, etc.), suspension lugs and any other details all being made of the same material in one single operation step. In this way, the manufacture of the crayfish pot will only comprise injection moulding of the parts, connecting the parts, as well as quality control. The injection moulding allows the parts to be very freely designed; thus, the net does not have to follow a regular pattern, but its ribs may form desired patterns, such as a text or graphic models. Besides injection moulding, for instance a vacuum or rotation process can be used for the manufacture.

Claims

1. A fishing device kit comprising fishing devices (301) and a fishing device box (200), characterised in that the fishing devices (301) are immersible and collapsible into a compact state which can be accommodated in the fishing device box (200), the fishing device box (200) comprising an integral frame portion (210) made from a waterproof material and adapted to receive the fishing devices (301) included in the fishing device kit such that, when the frame portion is filled with water, the fishing devices contained therein are and remain totally immersed in water.

2. A fishing device kit as claimed in claim 1, characterised in that the frame portion comprises guide formations (302) to keep the fishing devices at given locations in the box.

3. A fishing device kit as claimed in claim 1, characterised in that it comprises a lid (202) which can be removably connected to the frame portion (201), providing a watertight joint between the lid and the frame portion.

4. A fishing device kit as claimed in claim 3, characterised in that the lid comprises a waterproof partition closed with an intermediate bottom (401).

5. A fishing device kit as claimed in claim 1, characterised in that it comprises a box (601) for caught animals, which can be fastened by a releasable joint to the frame portion.

6. A fishing device kit as claimed in claim 5, characterised in that the box for caught animals is collapsible and can be accommodated within the frame portion.

7. A fishing device kit as claimed in claim 1, characterised in that the fishing devices (301) are collapsible crayfish pots.

8. A method for disinfecting fishing devices included in a fishing device kit, characterised in that it comprises steps for

- folding down the fishing devices included in the fishing device kit and placing them in the frame portion of a fishing device box included in the fishing device kit,

- filling the frame portion of the fishing device box with water until the collapsed fishing devices contained in it are totally immersed in water and - adding a disinfecting agent to the water contained in the frame portion of the fishing device box.

9. A method as claimed in claim 8, characterised in that the disinfecting agent is added to the water contained in the frame portion of the fishing device box in the form of a water-soluble tablet.

10. A fishing device (700) for catching an animal moving in water, comprising a first (701), a second (702) and a third (703) plate-like and rectangular part, which can be shifted relative to one another into a first position and a second position, the first, second and third plate-like part defining a given tridimensional space in the first position and the first, second and third plate-like part being parallel in the second position, characterised in that the tridimensional space defined by the first, second and third part in the first position is triangular in cross-section in a plane substantially perpendicular to the first, second and third plate-like part.

11. A fishing device as claimed in claim 10, characterised in that said first, second and third plate-like parts have the same size, whereby

- each said plate-like part comprises, in mutually parallel configuration a first long side and a second long side and perpendicular to these, in mutually parallel configuration a first short side and a second short side, and

- the long sides of said plate-like parts have been disposed to join so that in said first position, the first long side of the first part (701) joins the second long side of the second part (702), the first long side of the second part (702) joins the second long side of the third part (703) and the first long side of the third part (703) joins the second long side of the first part (701).

12. A fishing device as claimed in claim 11, characterised in that the long sides of said plate-like parts have been disposed to join so that in said first position, the first long side of the first part joins the second long side of the second part with a hinged joint, the first long side of the second part joins the second long side of the third part with a hinged joint, and the first long side of the third part joins the second long side of the first part with a releasable mechanical joint.

13. A fishing device as claimed in claim 11, characterised in that said plate-like parts are side parts and that the fishing device comprises in addition six trapezoidal gate parts (704, 705, 706), each of which comprises in mutually parallel configuration, a first and a second side, and also a third and a fourth side, both at an angle greater than 30 degrees but smaller than 90 degrees to the first side, each gate part being connected by its first edge to one short side of one side part with a hinged joint having a swing axis parallel to the short side of the side part.

14. A fishing device as claimed in claim 13, characterised in that said gate parts are distributed in two groups of three gate parts each, the gate parts in each group being disposed to join so that in said first position the third side of the first gate part joins the fourth side of the second gate part, the third side of the second gate part joins the fourth side of the third gate part, and the third side of the third gate part joins the fourth side of the first gate part, whereby the apex part of a cone open at its apex formed by the joining gate parts is within a tridimensional space defined by the side parts.

15. A fishing device as claimed in claim 10, characterised in that all of its parts are joined by releasable mechanical joints.

16. A fishing device as claimed in claim 10, characterised in that it comprises two suspension lugs (707) in one plate-like part for suspending the fishing devices from a string.

17. A fishing device as claimed in claim 10, characterised in that its parts are made of injection-moulded plastic and have a net-like structure.

18. A fishing device as claimed in claim 10, characterised in that it is a crayfish pot.