Patents by Inventor Clifford L. Allen

Clifford L. Allen 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).

  • Simultaneous power supply source
    Patent number: 6104103
    Abstract: A power transfer system for applying backup electrical power to electrical systems is described which applies backup power automatically without power interruption and which is straightforward to implement and inexpensive to manufacture. The power transfer system has a direct current (DC) power bus as a common supply point for protected electrical equipment, thereby making prior art systems which provide power transfer between alternating current (AC) power sources and typically provide an AC power bus in common with the protected equipment no longer necessary.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: August 15, 2000
    Assignee: Ingalls Shipbuilding, Inc.
    Inventors: James Carl Siewert, Clifford L. Allen
  • Simultaneous power supply source
    Patent number: 5892299
    Abstract: A power transfer system for applying backup electrical power to electrical systems is described which applies backup power automatically without power interruption and which is straightforward to implement and inexpensive to manufacture. The power transfer system has a direct current (DC) power bus as a common supply point for protected electrical equipment, thereby making prior art systems which provide power transfer between alternating current (AC) power sources and typically provide an AC power bus in common with the protected equipment no longer necessary.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: April 6, 1999
    Inventors: James Carl Siewert, Clifford L. Allen