Patents Assigned to Engineering Design & Development Pty. Ltd.
  • Magnetic identification apparatus
    Patent number: 3953712
    Abstract: Magnetic identification apparatus is disclosed in which a magnetically coded instrument such as a key or card is inserted into a reader which reads the recorded code. The code is recorded by disposition of discrete magnets in the instrument as the instrument is inserted into the reader, the movement of the discrete magnets relative to sensor elements in the reader causes the sensor elements to be energized. The energization of certain sensor elements is an indication of the recorded code.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: April 27, 1976
    Assignee: Engineering Design & Development Pty. Ltd.
    Inventor: Stephen Horvath