Patents by Inventor Stefan HALÉN

Stefan HALÉN 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).

  • Switching Device, Use Thereof And A Method For Switching
    Publication number: 20090315654
    Abstract: A device for switching in and out a load with respect to an alternating voltage feeder has two mechanical switches connected in series in a current path between the load and the feeder and each having a by-pass branch with at least one member with ability to block current therethrough in at least a blocking direction and conduct current therethrough in at least one direction. A unit is adapted to control a procedure of a switching out and switching in by synchronization with the current in the feeder and the voltage of the feeder, respectively.
    Type: Application
    Filed: July 31, 2009
    Publication date: December 24, 2009
    Inventors: Stefan Halen, Ola Jeppsson, Edgar Dullni, Hans Begge