Patents by Inventor Kurt W. Vieten

Kurt W. Vieten 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).

  • Stiffness enhanced electrohydrostatic actuator
    Patent number: 5575150
    Abstract: Disclosed is a stiffness enhanced electrohydrostatic actuator for aircraft flight controls which eliminates the requirement for a central hydraulic system. The actuator replicates the blocked port condition of the central hydraulic system to provide static and dynamic stiffness by the use of valves having a first sleeve and spool and a second sleeve and spool disposed on either side of a valve seat with the first spool biased towards the valve seat.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: November 19, 1996
    Assignee: Northrop Grumman Corporation
    Inventors: Kurt W. Vieten, Marvin V. Nordby, Sandor Dobos-Bubno