Patents Assigned to Conrac SCD, Inc.
  • Method and apparatus for dynamic magnetic field neutralization
    Patent number: 4963789
    Abstract: A method and apparatus for nulling the magnetic field within a specified volume in the presence of an external ambient field by generating compensating magnetic fields at a number of locations around the volume, sensing the field in the volume and controlling the value of the compensating fields in a closed loop system to null the field within the volume.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: October 16, 1990
    Assignee: Conrac SCD, Inc.
    Inventor: Frederick T. Buhler