Patents Assigned to Limited Ferranti
  • Cathode ray tube assemblies
    Patent number: 4109220
    Abstract: A cathode ray tube assembly including a plurality of permanent magnets to correct for pin cushion and barrel distortion has each adjustable magnet comprising at least part of a rotatable member, facilitating the provision of means to clamp the magnet in its required position, and facilitating the provision of a rugged assembly which is suitable, for example, for use in an aircraft.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: August 22, 1978
    Assignee: Limited Ferranti
    Inventor: Norman Eli Peart