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US 5,311,694 AGranted
Electrofishing apparatus and method
AssigneeCoffelt Manufacturing, Inc.
InventorsNorman G. Sharber, John P. Sharber
Life of this patent
Estimating the term…
Abstract
To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish.
Claims7
Apparatus for electrofishing, said apparatus comprising in combination:
- a) means for stimulating the red muscle tissues of fish to be captured in order to induce electrotaxis;
- b) means for relaxing any stimulated white muscle tissues in the fish prior to onset of epileptic seizure and
- c) means for automatically and on a continuing basis interleaving stimulation of the red muscle tissues with relaxation of any stimulated white muscle tissues.
Dependencies are inferred from the claim text.