Patents Examined by Patrick R. Saloe
  • Bargraph displays for static trip circuit breakers
    Patent number: 4429340
    Abstract: Separate bargraph displays controlled by the electronic trip unit of a static trip circuit breaker continuously indicate the magnitude of the highest phase current as a percentage of the log-time delay pickup current setting and the timing out of a long-time delay as a percentage of the applicable long-time trip delay interval for a given phase current in excess of the long-time delay pickup setting.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: January 31, 1984
    Assignee: General Electric Co.
    Inventor: Edward K. Howell