Patents by Inventor Vytautas F. Janonis

Vytautas F. Janonis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5612580
    Abstract: An uninterruptible power supply for providing continuous power from a power source line to a load is provided. In particular, the uninterruptible power supply may either operate in an "Off-Line" mode or one of two "On-Line" modes. The uninterruptible power supply operates in the "Off-Line" mode when the power source line voltage is above a first threshold value. The uninterruptible power supply routes power from the power source line to the load in the "Off-Line" mode. The uninterruptible power supply operates in a first "On-Line" mode when the power source line voltage drops below a first threshold value but exceeds a second threshold voltage, or the frequency of the power source line exceeds a predetermined range. The uninterruptible power supply boosts the power source line voltage in the first "On-Line" mode of operation and applies the boosted signal to the load.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: March 18, 1997
    Assignee: Northrop Grumman Corporation
    Inventors: Vytautas F. Janonis, Roland K. Massatti, Regis E. Novitskey