Animal feeders are disclosed that include a barrier limiting access to feed inside the feeder, doors controlled by an actuator and a control system configured to feed certain species to the exclusion of others by the recognition of those species. Cameras and, in some cases, other detectors are used to detect and identify animals by species. Doors may be configured to be open by default and remain open for the feeding of desired animals with the doors closing to prevent feeding upon the approach of an animal targeted for exclusion.

Animal feeders are disclosed that include a barrier limiting access to feed inside the feeder, doors controlled by an actuator and a control system configured to feed certain species to the exclusion of others by the recognition of those species. Cameras and, in some cases, other detectors are used to detect and identify animals by species. Doors may be configured to be open by default and remain open for the feeding of desired animals with the doors closing to prevent feeding upon the approach of an animal targeted for exclusion.

Some embodiments may be of spearfishing apparatus fitted with at least one magnet configured to repel sharks away from the spearfishing apparatus. The spearfishing apparatus may be one or more of: a spearfishing shaft, a spearfishing tip, and/or a spearfishing gun. Such magnets may be electromagnets powered by batteries in some embodiments.

Some embodiments may be of spearfishing apparatus fitted with at least one magnet configured to repel sharks away from the spearfishing apparatus. The spearfishing apparatus may be one or more of: a spearfishing shaft, a spearfishing tip, and/or a spearfishing gun. Such magnets may be electromagnets powered by batteries in some embodiments.

Sharks and other sea creatures are known to depredate fish from nets and longlines during the human act of fishing. It is known to try to use electrical currents passed through seawater to deter sharks from regions of human activity, particularly around divers. However, the power consumption required by such deterrents is very high, and is prohibitive in small portable devices. The present invention provides a sequence of electrical pulses in water, each electrical pulse in the sequence of electrical pulses spaced from each adjacent pulse by at least 3 seconds. In this way, the inventor found that an effective deterrent from depredation may be created with a much lower energy consumption that previously considered possible.

Sharks and other sea creatures are known to depredate fish from nets and longlines during the human act of fishing. It is known to try to use electrical currents passed through seawater to deter sharks from regions of human activity, particularly around divers. However, the power consumption required by such deterrents is very high, and is prohibitive in small portable devices. The present invention provides a sequence of electrical pulses in water, each electrical pulse in the sequence of electrical pulses spaced from each adjacent pulse by at least 3 seconds. In this way, the inventor found that an effective deterrent from depredation may be created with a much lower energy consumption that previously considered possible.

A system for repelling sharks is disclosed. Magnets are connected to a rod along its length. If necessary, the rod may be extended. Additionally, one or more flotation devices may be connected to the rod to manipulate or adjust the buoyancy of the system, depending on the user's objective(s). The rod is connected to a fishing line once a fish is hooked and is in close proximity to the boat or other structure from which the fisherman is fishing. The weight of the rod and magnets cause the rod to slide down to the end of the fishing line, where the rod will come in contact with the hooked mouth of the fish. As the fish struggles during the fight, the rod creates a protective magnetic field around the fish to deter sharks from engaging the fish.

A system for repelling sharks is disclosed. Magnets are connected to a rod along its length. If necessary, the rod may be extended. Additionally, one or more flotation devices may be connected to the rod to manipulate or adjust the buoyancy of the system, depending on the user's objective(s). The rod is connected to a fishing line once a fish is hooked and is in close proximity to the boat or other structure from which the fisherman is fishing. The weight of the rod and magnets cause the rod to slide down to the end of the fishing line, where the rod will come in contact with the hooked mouth of the fish. As the fish struggles during the fight, the rod creates a protective magnetic field around the fish to deter sharks from engaging the fish.

Apparatus and associated methods relate to a pest repelling magnetic field generating device (PRD) having a temperature sensor to detect the temperature of a solenoid coil during operation. The detected temperature to be used to ensure that the PRD operates within an ideal temperature range. Additionally, a fan is oriented within a housing of the PRD to force the flow of air from inside a housing of the PRD to outside a housing the PRD. In an illustrative example, the PRD may shut off if the temperature of the solenoid coil moves outside the ideal temperature range. By operating the PRD within an ideal temperature range, the service life of the PRD may be extended. Further, the fan may mitigate dust collection within the housing of the pest repelling magnetic field generating device.

A selective access system, and methods of making and using such a system, whereby the selective access system includes a container having an interior space defined by a side wall disposed between opposing top and bottom walls; an opening disposed within the side wall, the opening communicating with the interior space; and a cover slidably engaged with the container, the cover configured to slide upward and downward between a first position and a second position. In the first position, the cover overlays the opening; in the second position, the cover disposes away from at least a portion of the opening to permit access to the interior space. The selective access system can further include an electrical conductor coupled to the container, whereby the electrical conductor can deliver a nonlethal electrical shock to an animal which comes into contact therewith to deter the animal from the selective access system.