76 results about "Fish trap" patented technology

The fish trap system includes an enclosure having a revolving trap door attached to a coned gate Gargoor. Still and video cameras are included in the enclosure to provide snapshot and moving pictures of fish caught in the trap. A buoy (float) is included, from which images of fish in the enclosure are relayed via digital link to the user on the Internet. Moreover, user-controlled electrical gates are provided to either retain a fish or release a fish by closing and opening the gates via the Internet connection. The video camera, being disposed in the trap housing, is movable and provides views of the area around the fish trap when submerging the trap until it reaches the ground in order to locate the right flooring for the fish trap. Aside from fishing purposes, the fish trap system may be used for experimental purposes.

The invention discloses a submarine automatic net casting fish trap which consists of a frame, a net bracket, a net pressing rack, bag-shaped fishnets, rubber float balls, liquid nitrogen gasification devices, rubber float ball controllers, a safety device, pumping bait devices, floating boxes, fishy boxes and automatic balancing pods; a plurality of rubber float balls are arranged around each bag-shaped fishnets; both sides of each rubber float ball are provided with rubber float ball controllers; the left side and the right side of the frame are provided with infrared lamps, pumping bait devices, floating boxes, liquid nitrogen gasification devices and batteries; the front side and the rear side of the frame are provided with a plurality of fishy boxes; the four corners of the frame are provided with the automatic balancing pods; the frame is also provided with the safety device. The submarine automatic net casting fish trap is suitable to be operated in any bottom-layer sea area, applicable in capturing all fish on the bottom layer of the sea; the application of the novel capturing technology can develop novel farms in coral reef areas; the operation automation degree and the capturing capability are high, and the labor intensity and the energy consumption are low.

An improved bait-fish trap includes a cylindrical, mesh shell having a continuous outer wall, an upper end and an open lower end. The shell houses a mesh entrance cone having a lower base that is concentric with the open lower end of the shell, and an upper vertex in communication with an overlying entrapment chamber. At the upper end of the shell is a releasable hatch for accessing bait fish within the entrapment chamber. Attached to the hatch is a buoyant light for luring bait fish from the entrance cone into the entrapment chamber until they are removed via the releasable hatch. A buoyant tube is circumferentially secured to the inner surface of the upper end so that the shell remains afloat whenever the hatch is opened to retrieve captured bait fish.

A trap for collecting live minnows, the live minnows having a height, the trap incorporating a transparent case having a longitudinally opening longitudinal end; a first plurality of plates; a plurality of pivoting or fixed joints adapted for interconnecting first plurality of plates and the transparent case, the joints positioning the first plurality of plates at the transparent case's longitudinal end and further positioning the first plurality of plates to form at least a first inwardly extending funnel; a battery powered electric torch; a transparent cannister adapted for interconnecting the illuminating means and the transparent case, the transparent cannister positioning the electric torch for casting light outwardly from the transparent case; and a pair of suspension brackets connected operatively to the transparent case.

A trap for collecting live minnows, the live minnows having a height, the trap incorporating a case having a longitudinally opening longitudinal end; a first plurality of minnow attracting mirrored plates; a plurality of pivoting or fixed joints adapted for interconnecting first plurality of mirrored plates and the case, the joints positioning the first plurality of mirrored plates at the case's longitudinal end and further positioning the first plurality of mirrored plates to form at least a first inwardly extending funnel; a battery powered electric torch alternatively actuated during daylight; a transparent cannister adapted for interconnecting the electric torch and the case, the transparent cannister positioning the electric torch for casting light outwardly from the transparent case; and a pair of suspension brackets connected operatively to the case.

The present invention concerns a box-like fish-trap (1) comprising a frame, which is foldable, involved by a net, characterised in that it consists of:

A metallic upper body (2), which floats;

A metallic lower body (3);

Flexible cables (4) to fix the upper body (2) to the lower body (3);

Flexible side nets which connect the lower body (3) to the upper body (2);

Frames (6, 7) that hold the nets of the fish entrance openings (5) and which are arranged so as to let the fish come in but make it difficult for it to get out; and

One bottom (16) formed by a frame and net fixed in an articulated manner to one of the tops of the lower body and closed at the opposite top, which will make it possible to collect the captured fish.

The fish catching trap includes a substantially rigid round base having an open net surrounding it. A buoy or float is attached to the net by a line, the buoy being held stationary to an upper handle-like portion of the base using a nail or pin. The pin is attached to a string connected to fish bait placed in the bottom of the trap. When a fish disturbs or moves the bait, the string is pulled and the pin is released, allowing the buoy to quickly move upwards, closing the net surrounding the base and trapping any fish in the area. A second buoy serves as a visual indicator that the trap has been sprung.

Provided is a shoreside seamless fish-driving device used for a fish-guiding system. The shoreside seamless fish-driving device comprises an air pump arranged shoreside and flash lamps matching the air pump. An air outlet pipe having one enclosed end is arranged at the bottom of a riverway and located ahead of the position where a fish-guiding net is connected with the shoreside. The other end of the air outlet pipe is communicated with the air pump via an air-guiding pipe installed on a fixing rack. At least one flash lamp installed on a lamp rack is arranged into the riverway at the downstream position of the air outlet pipe. The air outlet pipe is composed of a PVC pipe having uniformly-distributed small holes on the pipe wall and a microporous sponge sleeve wrapped outside of the PVC pipe. The shoreside seamless fish-driving device used for the fish-guiding system has following beneficial effects: the problem that a physical guide fish gate cannot be closely connected to the shoreside is overcome; by matching the physical guide fish gate with fish trapping and driving technology, shoreside seamless connection of the fish-guiding system is realized and the middle of the riverway is matched with a non-physical fish-guiding system; and fish-guiding work and ship-passing operation are taken into consideration.

The invention discloses a fish trapping device which comprises two winches, two fixing piles, two fixing ropes, two pulley mechanisms, a bait feeder, a feed platform, a drop net, an entrance net, a basket net, a funnel net A, a funnel net B and a fish collection net cage, wherein two pulleys of the two pulley mechanisms are fixed on the two fixing piles respectively, the drop net is square, and is provided with a side A and a side B, the two corners of the side A are connected with the two winches through the two pulley mechanisms respectively, the entrance net takes the shape a quadrangular platform, the large port of the entrance net is provided with a side C and a side D, the side D is sewn and fixed with the side B, the two corners of the side C are fixed on the two fixing piles through the fixing ropes respectively, the basket net is divided into a front-section net body, a middle-section net body and a rear-section net body, the front-section net body is sewn and fixed with the entrance net, the funnel net A is mounted on the front-section net body, the middle-section net body is a screen, the funnel net B is mounted on the rear-section net body, the inlet of the fish collection net cage is in butt joint with the small port of the funnel net B. The device is simple in structure and ingenious in design, and when being used for fishing, the device is low in labor intensity.

The invention discloses a transmission type vertically-lifting fish-trapping device which comprises a three-phase motor (1), a square or rectangular fishing net (2), two horizontally-parallel head ropes (3) and four uprights for fixing end heads of the two head ropes (3), wherein the three-phase motor (1) is provided with a reel with a gearbox, two first pulleys (9) are connected to the two head ropes (3), four second pulleys (10) are respectively arranged on the four uprights, four digging ropes (14) are respectively connected to four corners of the fishing net (2), the other ends of the digging ropes (14), which are relatively connected to the fishing net (2) sequentially bypass one first pulley (9) and one second pulley (10) and then are wound on the reel, and one digging rope (14) is correspondingly connected with one first pulley (9) and one second pulley (10). By adopting the structure, the transmission type vertically-lifting fish-trapping device has the advantages of simple structure, convenience for operation during the fish trapping, and capability of rapidly casting as well as collecting and lifting the fishing net.

An earthen jar cage for trapping mudskippers comprises a reinforced frame; the reinforced frame is welded by upright reinforce columns; a cage body is formed by coating a lateral side surface with a mesh sheet wall, and the cage body is jar shaped; a fish inlet is symmetrically disposed on a middle portion of the reinforced frame coated by the mesh sheet wall; the fish inlet is connected to inward inverted whiskers; the inward inverted whiskers extend inwardly and are connected to an inward inverted whisker port; the inward inverted whisker port is fixed by an inward inverted whisker port pull cord; the cage top portion is connected with a cage body cover, and the cage cover is fixed by upper and lower steel ropes; the cage body cover is connected with a cage-lifting rope; one side is disposed with a fish discharging gate; one end of the fish discharging gate is fixed by a movable folding, and the other end of the fish discharging gate is connected with a gate hook; the fish discharging gate can implement opening and closing by moving up and forth under an action of the gate hook; a fish luring bag is placed at the cage bottom, and the fish luringing bag is fixed by a fish trapping bag pull cord.

An ice fishing trap comprising in its operational state a crossbeam dimensioned for extending across a hole in ice covering a body of water, and a hingedly coupled vertical mast. The vertical mast has a rotatable reel dimensioned to carry a length of fishing line and a hook. A trigger mechanism is provided, wherein a rotation of the reel causes an arcuate movement of a trigger hook. One aspect of the invention provides at least two stabilizer limbs hingedly coupled to the crossbeam, so as to form a general Z shaped support base when operational. In another aspect the fishing trap provides a trigger bolt coupled to an indicator spring, wherein the trigger bolt is utilized to couple the indicator spring to the trigger hook. The trigger bolt is slidingly supported by bolt guide, thus providing improved resistance to false indications due wind vibration and the like. Preferably, the trigger bolt is coupled to the indicator spring by a ring shaped coupler.

The invention discloses an aquaculture environment precise sensing device based on multi-net fusion. The aquaculture environment precise sensing device comprises a breeding pool. A closed fish enclosure net is arranged in the breeding pool and divides the breeding pool into different breeding areas. A feeding boat floats in the breeding pool and is provided with a feeding mechanism. The feeding boat is connected with a traction mechanism. The traction mechanism pulls the feeding boat to run in the different breeding areas. An environment sensing module is installed in the breeding pool. Fishes with different sizes can be bred in the different breeding areas, fishes of different types can be bred in the different breeding areas, the fishes of different types and with different sizes can be precisely fed through the feeding mechanism, and therefore it is avoided that the fishes fight for food, the rapid growth and reproduction of fish fry are facilitated, the state of a water body can be monitored at any time in the breeding period, fishes trapped in the large fish breeding area can be brought to the water surface according to requirements, and the physical characteristics, feeding characteristics and the like of the fishes can be conveniently observed in a short distance.

An opsariichthys bidens trapping cage used in a great lake comprises a cage body rack. Semi-circled stand column rings are welded to form the cage body rack; the external surface of the cage body rack is covered with a net sheet wall to form the cage body; the cage body is semi-circled; the back end port part of the cage body is connected with a fish storage bag; the fish storage bag is fixed by up and down mesh ropes and is provided with steel a bar supporting ring which is used for supporting the inner space and enabling the fish storage bag to directly stretch to the upper surfaces of a fish fetching port; the front and back end parts of the cage body are respectively provided with a fish inlet and a fish storage bag fish inlet; the fish inlet and the fish storage bag fish inlet are respectively provided with inward inverted burrs; the inward inverted burrs are fixed by the net sheet wall; the inward inverted burrs inwardly extend to be connected with an inward inverted bur port; the inward inverted bur port is fixed by an inward inverted bur stay rope; a fish trapping bag is placed in an inner cavity of the cage body; and the fish trapping bag is fixed by a fish trapping bag stay rope.

The invention discloses a fishing trapping method based on fish oxygen tropism and food tropism. The method uses a dual-function pump which can convey oxygen and fish trapping nest materials, the dual-function pump is connected with two pipelines Pipe1 and Pipe2 to convey oxygen and smell fish trapping nest materials to a water area where a fishing hook is located, the oxygen content of the waterarea near the fishing hook and the density of the fish trapping nest materials are increased, and fishes can be better attracted to be close to the water area where the fishing hook is located. The method is simple and easy to implement, the use environment is not limited, the trapping success rate of various fishes can be increased in the fishing process, and the method has universal applicability and durability.

The invention provides a cage for trapping Bombay ducks in rivers and lakes. The cage comprises a cage frame formed by connecting and welding rebar stand columns mutually. The outer side surface of the cage frame is covered with net piece walls and thus a rectangular cage body is formed. The two ends of the cage body are provided with fish inlets. The two fish inlets are connected with opening fixing frames inward in an inward-concave and extending manner. The opening fixing frames are connected and fixed through opposite pull of upper and lower net ropes. The opening fixing frames are provided with opening fixing frame fish inlets which are provided with inner tapered units. The inner tapered units extend inward and are connected with inner tapering openings and inner tapering opening pull ropes are used for connection and fixation of the inner tapering openings. The middle portion of one side of the top end of the cage body and a corner portion are provided with a cage lifting nose and a fish taking door. One end of the fish taking door is fixed by movable hinges and the other end is connected with a door hook through which the fish taking door can be opened and closed vertically. A fish trapping bag is arranged in the inner cavity of the cage body and fish trapping bag pull ropes are used for connection and fixation of the fish trapping bag.

The invention relates to a large river surface fish trapping cage device comprising a fish luring cage formed by net sheet walls. The fish luring cage is enclosed by the net sheet walls. A sliding door is arranged on a front-side net wall of the fish luring cage. A sliding door string is connected to each of the two ends of the sliding door, such that the sliding door can be opened and closed in a sliding way with the cooperation of the sliding door strings. Net-guiding walls are connected to the end faces of the two sides of the front-side net wall of the fish luring cage. A fish-fetching bag is connected to a back-side net wall of the fish luring cage. The fish fetching bag is fixed with fish fetching bag net ropes. The internal space of the fish fetching bag is supported by three steel supporting rings, and the fish fetching bag extends to a bag stretching pile. A fish inlet is provided at the middle part of the back-side net wall of the fish luring cage. Steel inverse tassels are arranged on the fish inlet. The fish luring cage, the net walls, the sliding door, the net-guiding walls, and the fish fetching bag are fixed and connected through upper and lower line ropes, the fish fetching bag net ropes, back positioning piles, cage-fixing piles, net-guiding piles, and the bag stretching pile.

The invention discloses an underwater sounding device and a fish trap detection system. The underwater sounding device comprises a cylindrical sounding part which comprises a front vibration casing and a rear vibration casing, a groove-shaped vibrator which is arranged in a cavity structure and is connected with the front vibration casing, annular T iron which is connected with the side wall of the cavity structure, and an annular magnet which is fixed above the T iron. The front vibration casing and the rear vibration casing are arranged up and down and form the cavity structure together. A voice coil is connected with the bottom of the vibrator. The voice coil is connected with a cable. The voice coil partially penetrates into a hollow structure composed of the front end of the T iron, the magnet and the length part, which exceeds the magnet, of the washer. The fish trap detection system sends an acoustic signal to fish school through a sounding unit, detects the trap effect in real time, and at the same time can comprehensively judge and analyze the species, size, location and the like of the trap fish school.

The invention relates to a sound generator for trapping mandarin fishes. The fish-trapping sound generator comprises a transformer, a capacitor and triodes, wherein output ends of an oscillating coil of the transformer are connected with the capacitor in series, a center shaft head of a control coil of the transformer is connected with a power supply cathode and emitting electrodes of the triodes through a resistor, and the other two ends of the control coil are respectively connected with the bas electrodes of the triodes through a diode; and a center shaft head of a power coil of the transformer is connected with a power supply anode through a shunt resistor and a switch of an ampere meter, one end of the power coil is connected with the collector electrode of one triode, the other end of the power coil is connected with the collector electrode of the other triode and then is grounded, the input end of the power supply is connected with a voltmeter in parallel, and the shunt resistor is connected with the ampere meter in parallel. The fish-trapping sound generator has simple structure, small size and convenience in use, the shock waves of the sound generator are in resonance with the sleep frequency of the mandarin fishes so that the mandarin fishes can be trapped during sleeping. The sound generator has no influence on the life habit of the mandarin fishes, and labor intensity for trapping the fishes is low.

The invention discloses a fish trapping suspension net cage for different water flow layers. The fish trapping suspension net cage comprises a net cage body, a mounting shaft is fixedly connected to the middle positions of the inner walls of the two sides of an inner cavity of the net cage body, and a convolution vortex mechanism is fixedly connected to the middle position of the outer surface ofthe mounting shaft; partition nets are fixedly connected to the top and the bottom of the inner cavity of the net cage body and located at the two sides of the convolution vortex mechanism, bait mechanisms are fixedly connected to the top and the bottom of the inner cavity of the net cage body and at the sides, away from the convolution vortex mechanism, of the partition nets, and loading pocketsare fixedly connected to the outer walls of the two sides of the net cage; and an adjusting rope is movably connected to the outer surface of the convolution vortex mechanism, a floating positioning mechanism is fixedly connected to the middle of the top of the net cage body, and a wave regulating and controlling mechanism is movably connected to the end, away from the convolution vortex mechanism, of the adjusting rope. The invention relates to the technical field of fish trapping. By adjusting the floating volume of the net cage, positioning of the net cage at the water layers of different depths can be achieved, different types of fishes can be trapped conveniently, the application range is widened, and cost consumption is reduced.

The invention provides a river migratory fish trapping method. A river migratory fish trapping device is adopted for trapping, and the river migratory fish trapping device is of a splayed dustpan structure, and comprises inducing mesh walls, a riverbed netting, a plurality of fixed piles and a fish collecting part. The inducing mesh walls comprises the splayed inducing mesh wall arranged close to the river bank side and the inducing mesh wall arranged close to the river center side, the shape of the riverbed netting is the same as the surrounding shape of the inducing mesh walls, and narrower end of the riverbed netting and the inducing mesh walls form a contraction opening to be connected with the fish collecting part. Before trapping is carried out, the river migratory fish trapping device is laid on a fish migratory river channel along the river bank through the fixed piles, the inducing mesh wall close to the river bank side is parallel to the water flow direction of a river, the inducing mesh wall close to the river center side forms a 45-degree angle with the water flow direction, and baits are additionally arranged on the riverbed netting; after trapping is completed, the riverbed netting is slowly lifted to the water surface gradually from the wider end to the narrower end of the riverbed netting, so that trapped fishes are driven to swim to the fish collecting part actively.

Various aspects of the disclosure generally relate a fish trap for use in waters among marine predators which use echolocation. In one aspect the fish trap has acoustic masking properties. In one aspect the fish trap may be a lightweight, collapsible column for use by small commercial vessels and recreational fishing. In one aspect the fish trap may have an overlapping net, forming a double seam for added strength. In one aspect the fish trap may have reinforcing wire along bridle attachment points to hold heavier loads of fish.