Patents by Inventor Lachlan GUNN

Lachlan GUNN 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).

  • Noise reduction circuitry for a metal detector
    Patent number: 9557390
    Abstract: A method for detecting a change of an impedance of a magnetic field receiver of a metal detector, including: having a first network of passive components, including the impedance of the magnetic field receiver; having a second network of passive components, excluding the impedance of the magnetic field receiver; and processing a first measurement signal from a first node of the first network with a second measurement signal from a second node of the second network to detect the change in the impedance of the magnetic field receiver; wherein the first network, the second network, the first node, the second node is configured such that in an absence of an external influence which affects the impedance of the magnetic field receiver, the first measurement signal is substantially the same with the second measurement signal; and in a presence of the external influence, the first measurement signal is different from the second measurement signal.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: January 31, 2017
    Assignee: Minelab Electronics Pty Limited
    Inventors: Laurentiu Stamatescu, Sergii Shapoval, Lachlan Gunn
  • NOISE REDUCTION CIRCUITRY FOR A METAL DETECTOR
    Publication number: 20140062488
    Abstract: A method for detecting a change of an impedance of a magnetic field receiver of a metal detector, including: having a first network of passive components, including the impedance of the magnetic field receiver; having a second network of passive components, excluding the impedance of the magnetic field receiver; and processing a first measurement signal from a first node of the first network with a second measurement signal from a second node of the second network to detect the change in the impedance of the magnetic field receiver; wherein the first network, the second network, the first node, the second node is configured such that in an absence of an external influence which affects the impedance of the magnetic field receiver, the first measurement signal is substantially the same with the second measurement signal; and in a presence of the external influence, the first measurement signal is different from the second measurement signal.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Inventors: Laurentiu STAMATESCU, Sergii SHAPOVAL, Lachlan GUNN