Patents by Inventor Roger Kieren

Roger Kieren 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).

  • Load totalizing blocked throwover control
    Patent number: 5008560
    Abstract: An electric utility sub-station having two transformers which transmit electric energy to customers in different service areas. A throwover is provided which is operative, when a failure occurs in one transformer, to switch the load normally carried by the failed transformer over to the other transformer which then carries the load of both transformers. Operation of the throwover is blocked when the total demand load on both transformers exceeds the capacity of either transformer.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 16, 1991
    Assignee: The Detroit Edison Company
    Inventors: Roger Kieren, David A. Jamison, John J. Thomas