Tank for electroanesthetizing fish
OwnerNorman G. Sharberinventor
Life of this patent
Estimating the term…
Abstract
Anode and cathode electrodes are placed at the upstream downstream ends of an elongated tank containing fish to be electroanesthetized by applying an electric signal to the electrodes to create an electric field within the tank sufficient to induce petit mal in the fish. By maintaining a flow of water in the tank from the end containing the anode electrode to this end containing the cathode electrode, the fish will tend to head toward the anode electrode and be subject to the largest voltage gradient induced by the electric field. A barrier at each of the anode and cathode electrodes prevents contact by the fish to protect the fish against injurious electrical shock.
Claims20
Apparatus for electroanesthetizing aquatic animals, said apparatus comprising in combination:
- a) a compartment for containing water and the aquatic animals to be electroanesthetized;
- b) a source of electric power for generating an electric signal to establish an electric field in said compartment to electroanesthetize the aquatic animals;
- c) a first electrode disposed at one part of said compartment;
- d) a second electrode disposed at another part of said compartment;
- e) means for interconnecting said first and second electrodes with said power source to establish the electric field within said compartment and commensurate flow of electric current between said first and second electrodes;
- and
- f) means for shielding at least one of said first and second electrodes to prevent contact between the aquatic animals and the shielded at least one electrode, said shielding means including means of accommodating flow of water about the substantially complete immersed areas of said shielded at least one electrode.
Apparatus for electroanesthetizing aquatic animals, said apparatus comprising in combination:
- a) a compartment for containing water and the aquatic animals to be electroanesthetized;
- b) a source of electric power for generating an electric signal to establish an electric field in said compartment to electroanesthetize the aquatic animals, said electric signal comprising a pulse train having a packet of high frequency pulses repeated at a low frequency rate for inducing petit mal in the aquatic animals and for preventing myoclonic jerks in the aquatic animals;
- c) a first electrode disposed at one part of said compartment;
- d) a second electrode disposed at another part of said compartment;
- and
- e) means for interconnecting said first and second electrodes with said power source to establish the electric field within said compartment and commensurate flow of electric current between said first and second electrodes.
Apparatus for inducing petit mal in aquatic animals without causing injuries in the aquatic animals due to myoclonic jerks, said apparatus comprising in combination:
- a) a compartment for containing water and the aquatic animals;
- b) an anode electrode disposed at one part of said compartment;
- c) a cathode electrode disposed at another part of said compartment;
- d) a signal source for generating a pulse train having a packet of high frequency pulses repeated at a low frequency rate;
- and
- e) means for interconnecting said signal source with said anode and cathode electrodes to produce an electric field within said compartment.
Dependencies are inferred from the claim text.