Patents by Inventor Carsten Olesen

Carsten Olesen 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).

  • Control valve unit for a hydraulic servo motor for a control valve of a turbine
    Patent number: 4025222
    Abstract: A valve system for controlling the flow of hydraulic fluid for opening and closing the main control valve for a turbine system. The valve system comprises: first valve means for passing hydraulic fluid to the servo motor to maintain the control valve open during normal operating conditions of the turbine and to interrupt the supply of hydraulic fluid in response to a predetermined normal pressure drop; second valve means for draining hydraulic fluid from the servo motor to close the control valve in response to a predetermined normal pressure drop in the turbine system; and third valve means for separately draining hydraulic fluid from the servo motor to relieve the latter of pressure rapidly in response to an abnormal pressure drop in the turbine system with consequent rapid closing of the control valve.
    Type: Grant
    Filed: November 10, 1975
    Date of Patent: May 24, 1977
    Assignee: Stal-Laval Turbin AB
    Inventors: Martin Hedstrom, Carsten Olesen, Tyge Vind