Patents by Inventor Abraham Leendert Verburg

Abraham Leendert Verburg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5797210
    Abstract: Electro-fishing apparatus comprising a trawling net (16) which during operation is towed over the bottom, a combination of electrodes (10, 12) which, during operation, are towed over the bottom at a distance in front (14) of the net (16), and a pulse generator (28) which is connected to electrodes (10, 12) to generate during operation a pulsed electric field in the water. The electrodes comprise at least partly a number of electrically conducting bodies (10a, 10b, 10c, . . . ) each through a separate connection cable connected to pulse generator (28), whereby the water contacting surface of each electrically conducting body (10) is limited such that a specific electrical resistance is created. The pulse generator (28) is embodied such that each of electrically conducting bodies (10) can be powered separately to generate a field between the momentaneously powered electrically conducting body (10) and another electrode (12).
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: August 25, 1998
    Inventor: Abraham Leendert Verburg
  • Patent number: 5644863
    Abstract: Fishing gear for electric fishing, comprising a beam (5) which is provided with pairs of electrodes (9, 10) over which a potential difference can be generated, as well as a power source (16) and pulse generator. The power source (16), the pulse generator and the connections of the electrodes (9, 10) are housed in a watertight chamber inside the beam (5), the pulse generator being housed in a chamber which for cooling purposes is partly flushed by water. The electrodes (9, 10) are also each provided with a core (42) of electrically conducting material, metal electrode pieces (43) being electrically connected to the core (42) with regular spacings between them and the core being insulated between the electrode pieces (43).
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: July 8, 1997
    Inventor: Abraham Leendert Verburg