Fishing Nets TRIZ Cases

Directional acoustic emitters emit angled sound to startle fish, creating virtual barriers that prevent escape from the towing trajectory.

A lead-free copper-zinc alloy composition enhances machinability and corrosion resistance for aquaculture wire production.

Induced flow from thruster assemblies pulls marine specimens into capture inlets, preventing physical trauma during live retrieval.

A telescopic net assembly uses a frictional draw stem to retract the handle and close the netting.

A corkline stacker arm mounts directly on a net crane vertical arm to move in tandem with the net layer roller.

Segmented buoy lines with predetermined tensile strength release links prevent sea creature entanglement injuries.

Segmented basket design prevents external theft by birds and fish, extending bait availability for trapped crawfish.

A wireless rope releasing apparatus uses an actuator and receiver to control net deployment.

An integrated dehooking tool uses a net to capture treble hooks, reducing handling stress and mortality by keeping fish submerged during release.

Mouthguard tethered to buoyant net attachment separates during casting to simplify handling and reduce recasting setup time.

A wearable manipulation device transmits wireless signals to a central control unit for remote fishing equipment operation.

Differentiating body and end net materials resolves UV degradation and wet weight contradictions while maintaining capture effectiveness.

A trawl door uses movable plate elements to adjust its hydrodynamic area.

A submersible trawl net integrates a fish observation camera and central control system to monitor marine creatures during collection.

An underwater mobile body detects fish positions using imaging cameras and guides them toward nets via vibration generators.

A support bracket system integrates HDPE rings and reinforced ropes to provide buoyancy for rigid metallic meshes in aquaculture cages.

An illuminated aerator dip net combines a rigid air tube, LED light, and air stone into one submerged assembly.

A catamaran fishing ship integrates a concave chamber for centralized fish storage alongside the primary fishing assembly.

Dynamic hoop conforms to cylindrical sidewalls, eliminating gaps that allow fish escape during retrieval.

A water purification device ionizes air to increase dissolved oxygen levels in treatment water.

Segmented marker devices on jug and noodle floats maintain visibility across lighting conditions without light stick depletion.

A line-guided fish landing net uses buoyant and weighted sections to automatically unfurl in water.

Flexible webbing withstands heavy loads and dynamic stresses, resolving gear reliability issues while maintaining bycatch exclusion effectiveness.

Tubular end plugs with O-rings seal the hoop frame and pole, preventing water ingress to maintain buoyancy.

Sensor-driven navigation automates lure positioning to resolve the contradiction between manual control complexity and low catch efficiency.

A fishing lure embeds a light source within a translucent polymer lens to amplify and disperse illumination along the lure body.

Impermeable membrane with escapements reduces water flow velocity inside the apparatus, minimizing physical damage and stress on harvested aquatic animals.

Segmenting the rigid base from the flexible net allows high capacity storage while reducing weight and deployment complexity.

An underwater harvesting device uses targeted light sources to attract zooplankton into suction inlets for fluidic collection.

A cylindrical mesh trap uses a buoyant light module to lure bait fish into an entrapment chamber.

Stacked hydrofoil elements rigidly attach to buoyancy spheres to generate velocity-dependent lift forces.

Segmented nets capture Asian carp while optical sensors count the volume, resolving low survival rates from electrofishing.

Remotely controlled flaps on a trawl door resolve the stability versus drag trade-off by dynamically adjusting the angle of attack during towing.

A submersible speaker controller emits pre-recorded tactile sounds to attract aquatic animals.

Segmenting the flow path into suction and delivery sections reduces hose diameter and drag force while preventing cavitation.

A double interlocked loop edge finishing structure secures adjacent wire pickets through interlinked curved formations.

Robotic rovers guide seine nets to concentrate fish, eliminating diver risks while reducing stress on remaining stock.

Replacing brittle glass fibers with scuffed ESKA plastic optical fibers maintains illumination intensity while preventing temperature-related brittleness.

Nested panels and an intermediary opening prevent tangling during transport, preserving net integrity.

A pliable trawl bag uses a pressurized fluid conduit to dilate and maintain structural shape during underwater operation.

Temperature-dependent sound velocity corrections along the propagation path resolve measurement precision issues caused by environmental variations.

A fish observation apparatus combines optical sensors with sonar to determine real-time fish size for selective harvesting.

A sliding inner rod and tension plate enable manual locking of an aquatic snare lasso, preventing reef damage from rigid metal cables.

Lateral damping plates and a downward keel on a pressurized float minimize wave-induced buoyant forces, preventing mussel loss during storms.

Segmented coating plates allow on-site replacement, reducing downtime and maintenance costs.

Automated fish suction mechanisms convey catch directly to storage, eliminating manual net handling that causes time consumption and low fishing efficiency.

Segmented fingers and a bottom trench constrain slippery bait orientation, eliminating manual handling time and reducing catch loss.