Patents by Inventor Hans Christian Johnsen

Hans Christian Johnsen 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).

  • Patent number: 7240694
    Abstract: A flow control valve includes a valve body defining fluid inlet and outlet sections interconnected by a connecting port. A valve unit is disposed in the valve body and is operably connected to an actuator to be moved thereby for opening and closing the connecting port. The valve unit includes a valve element which has a bleed passage extending therethrough for communicating the fluid inlet and outlet sections with one another. A bleed piston is operably connected to the actuator and is movable thereby relative to the valve element for opening the bleed passage when the valve unit is in a port-closing position. The valve unit also includes a pressure balancing passage which communicates front and rear ends of the valve element with one another and tending to aid in statically and dynamically balancing the fluid pressures acting on the valve element.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: July 10, 2007
    Assignee: Danfoss A/S
    Inventors: Hans Christian Johnsen, Joergen Holst, Mikkel Kloppenborg-Skrumsager
  • Patent number: D583221
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: December 23, 2008
    Assignee: Danfoss Drives A/S
    Inventor: Hans Christian Johnsen