RussianPatents.com

Apparatus and method for catching of fish and sea invertebrates. RU patent 2264098.

FIELD: commercial fishery, in particular, methods and equipment for catching of fish and sea invertebrates, based on responsiveness thereof to light.

SUBSTANCE: apparatus has netted sack equipped with floats arranged over upper seine rope and with weights, tightening rings and tension cable, which are arranged over lower seine rope. Also, netted sack is additionally equipped with triangular netted plates and flat elastic hydrodynamic rectangular members. Triangular netted plates are attached to side seine ropes of netted sack and flat elastic hydrodynamic rectangular members are fastened to inner side of triangular netted plate, with adjacent flat elastic hydrodynamic members partly overlapping each other. Flat elastic hydrodynamic members are fastened by means of strands to at least 1/3 the length of outer side of triangular netted plate, at a distance from upper seine rope. Method involves arranging apparatus for catching of fish and sea invertebrates in proper operating position; concentrating fish yield by means of light; raising and pouring caught fish; before arrangement of related equipment in proper position, attaching at least two feeding cables to weights and attaching at least two tightening cables to upper seine rope and/or to side seine ropes; raising fishing apparatus by providing synchronous tightening of feeding and tightening cables and of tension cable.

EFFECT: increased fish catching area and, accordingly, increased efficiency in catching of fish and sea invertebrates from board the ship.

4 cl, 3 dwg

IPC classes for russian patent Apparatus and method for catching of fish and sea invertebrates. RU patent 2264098. (RU 2264098):

A01K73 - Drawn fishing nets

Another patents in same IPC classes:

Rope pelagric trawl / 2249948
Proposed rope pelagric trawl consists of front rope and end eight sheet net parts and float, fishing and side lines. Hydrodynamic panels are installed on float line, and fishing line is furnished with chain. Difference in lengths of float and side lines and fishing and side lines is 7 m.

Apparatus and method for catching of fish and sea invertebrates / 2264098
Apparatus has netted sack equipped with floats arranged over upper seine rope and with weights, tightening rings and tension cable, which are arranged over lower seine rope. Also, netted sack is additionally equipped with triangular netted plates and flat elastic hydrodynamic rectangular members. Triangular netted plates are attached to side seine ropes of netted sack and flat elastic hydrodynamic rectangular members are fastened to inner side of triangular netted plate, with adjacent flat elastic hydrodynamic members partly overlapping each other. Flat elastic hydrodynamic members are fastened by means of strands to at least 1/3 the length of outer side of triangular netted plate, at a distance from upper seine rope. Method involves arranging apparatus for catching of fish and sea invertebrates in proper operating position; concentrating fish yield by means of light; raising and pouring caught fish; before arrangement of related equipment in proper position, attaching at least two feeding cables to weights and attaching at least two tightening cables to upper seine rope and/or to side seine ropes; raising fishing apparatus by providing synchronous tightening of feeding and tightening cables and of tension cable.

Otter trawl board / 2267271
Otter trawl board has profiled carrier plate, slats, upper and lower washers, ballast adapted for imparting stable position to otter board during trawling and positioned in lower part of otter board, stringers for imparting desirable rigidity to otter board, central stringers for securing of otter trawl board arch, combs for attachment of trawl cables, and wire. Otter trawl board arch is arranged symmetrically to axis of plate and slats. Wire attachment device is positioned on horizontal axis of symmetry of plate and slats. Trawl upper cable is fixed to comb, in the vicinity of upper washer of otter board, and lower cable is fixed to comb in the vicinity of lower washer. Carrier plate and slats are curved along chain line described by formula where , To is horizontal thread tension component; q is weight of 1 running meter of thread, and curvature of slats is identical to that of carrier plate. Combs, central stringers and trawl board arch are equipped with openings for adjustment of otter trawl board in accordance with angle of attack, heeling and trim.

Method for determining of trawl net catching coefficient / 2275021
Method involves finding partial of dividing the number of fishes caught by means of trawl net by the number of fishes downstream of trawl net, the latter number being defined by means of echo sounder, which is disposed above floating means moved synchronously above trawl net mouth space. During movement of echo sounder, cone of hydroacoustic beam overlaps space between otter trawl boards and trawl net wings.

Method for determining of trawl motion parameters and apparatus for performing the same / 2281649
Method involves providing additional signals according to deviation angles of right-hand and left-hand wires relative to diametrical plane of puller vessel and also signals according to angles of submersion of right-hand and left-hand wires into water relative to waterline plane of puller vessel, from which signals trawl motion parameter signals and puller vessel motion parameter signals are determined. Apparatus has right-hand and left-hand converters for converting angles of wire deviation from diametrical plane of puller vessel and also for converting angles of submersion of wires into water relative to waterline plane of puller vessel, with outputs thereof being outputs of apparatus by trawl motion parameters and puller vessel motion parameters.

Fishing tackle / 2289242
Invention can be used in fishing saira, mackerel, sardine and sea invertebrates such as squids. Proposed tackle contains net portion, float line with floats, fishing line whose middle part is horizontal and smoothly mates with vertical end sections and is furnished with sinkers and back strops with rings, and hydrodynamic panels made of cloth, preferably, synthetic cloth. It contains additionally sweep net nag with cod end made of net fixed on load-bearing skeleton made in form of ribs of truncated tetrahedral pyramid. Ends and middle of vertical fibs forming side edges of mouth of sweep net bag are connected by horizontal ribs of load-bearing skeleton with vertical end sections of fishing line, ends of horizontal rib forming lower edge of mouth of sweep net bag are connected with horizontal section of fishing line by means of vertical ribs of load-bearing skeleton. At least one radial rib is arranged in sector between lower horizontal rib and vertical rib of load-bearing skeleton in contact with lower horizontal rib. Angular distance between radial ribs and between radial ribs and horizontal or vertical ribs of load-bearing skeleton are equal. Upper horizontal ribs of load-bearing skeleton and upper horizontal rib forming upper edge of mouth of sweep net bag are connected directly with float line. Ends of back strops are connected with fishing line in points where ribs of load-bearing skeleton are connected with fishing line.

Otter board (versions) / 2292713
Otter board has lower wing, upper wing and at least one intermediate wing, said wings being curved in direction of advancement of otter board in water so as to define channels therebetween, parallel longitudinal fins and keel. Wings are made of different length and are stepped one above another with different gaps therebetween so as to define V-shaped profile relative to central longitudinal fin. Wings have aerodynamic profile with maximum profile of upper wing making 18% of wing length, and wing length to wing width ratio constituting from about 1:1.3 to about 1:1.4. Angle of V-shaped profile is 155 deg. Fins have unequal arms. Wing front edges are reinforced with stringers. At least one additional guiding and stabilizing fin is provided along the entire length of otter board wings and four additional guiding and stabilizing fins are provided along the entire length of otter board.

Trawl construction / 2298319
Proposed trawl includes sea product or biomass catching member and conveyer for transferring sea products or biomass to another ship. Conveyer is provided with hose which has upper section at ascending inclination in way of sea surface. Trawl is provided with injector mounted in upper section of conveyer at the same ascending inclination. Injector provides for control of passage of sea products or biomass from trawl through hose due to ascending inclination. Trawl is provided with extended rigid or flexible collecting cage which consists of several rigid collecting cages and several flexible collecting cages. Extended collecting cage has first part including inlet opening which is located behind trawl and is connected to it. Collecting cage has second part to which inlet opening leads. Second part has opening through which water may be filtered. Collecting cage has third part located after second part. Third part is connected with bell mouth. Filtering screen is mounted before this bell mouth. Transferring hose is connected with bell mouth and is used for transferring the sea products or biomass to receiving ship. Hose supplying the fluid medium is used for injection of this medium. Hose may be used for transferring the sea products or biomass from collecting cage to ship. Fluid medium supply hose is provided with injector and transferring hose is made at ascending inclination towards sea surface and towards rear wall of cage which is distant relative to it. Trawl is provided with extended collecting cage which is connected with rear terminal area of trawl; it passes to the second part provided with openings for screening the water and terminates in part located below in way of flow. Sea products or biomass transferring hose or pipe opens to lower or rear part of cage through bell mouth. Provision is made for filtering screen for filtering-off the sea products or biomass which are not to be supplied to bell mouth. Air or another fluid medium is fed from ship via supply hose for injection into transferring hose or pipe to obtain injection effect or method of shift of fluid medium for transfer of sea products or biomass from collecting cage to ship. Air or another fluid medium is fed from ship via air supply hose for injection at point on transferring hose or pipe by means of injector found in upper part of transferring hose or pipe at ascending inclination towards sea surface.

Stationary net / 2311025
Stationary net has central cable, guiding wing made from webbing net, frame, and two catches, each of said catches having lifting path with wings, inlet opening and cage. Central cable, guiding wing and frame are put onto tucking-up members and separated by means of guys with anchors. Catches are positioned on frame in opposite relation with respect to one another. Guiding wing is positioned on central cable. Main and additional catches have two pairs of inlets provided at the side of shore and sea, and guiding wing has wing members at its end.

Trawl otter board / 2323572
Trawl board has two interconnected trapezoidal profiled bearing shields, equipped with stringers, slats, ballast, devices for fixing cables and warp. Bearing shields are installed with possibility of rotation around one axis. Each shield is equipped with middle stringer mounted at an angle with shield. Stringers have opposed pockets where elastic elements limiting the angle of rotation of shields are installed. Middle stringers are equipped with flaps.