Patents by Inventor John Michael Gvoth, Jr.

John Michael Gvoth, Jr. 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).

  • Backup protection switch to prevent reverse power flow in a UPS
    Patent number: 4763013
    Abstract: A UPS system includes a backup input line isolation switch and control circuit for energy flow in the UPS is operative, during operation of the reserve energy source portion of the power supply in supplying power to the output, to provide mechanical isolation between the primary energy source connected to the input line and the secondary energy source upon detection of a failure of an electronic isolation switch normally providing isolation between te input line and the secondary energy source or an output of the UPS.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: August 9, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: John Michael Gvoth, Jr., Robert J. Kakalec, Henry E. Menkes