Patents Assigned to Detection Systems Pty. Ltd.
  • Search head for metal detectors
    Patent number: 4959636
    Abstract: A search head for a metal detector, the head comprising a support body and three conductive loops mounted on the body, the loops being formed from a single ribbon cable. An oscillating signal is applied to one of the loops and induced voltages in the other two loops are subtracted, the arrangement being such that a difference will appear in the subtracted voltages when a metal object is closer to the other two loops.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: September 25, 1990
    Assignee: Detection Systems Pty. Ltd.
    Inventor: Anthony J. Maher