Patents by Inventor J.o slashed.rgen Skindh.o slashed.j

J.o slashed.rgen Skindh.o slashed.j 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).

  • Power switching apparatus
    Patent number: 6038117
    Abstract: A power switching apparatus is disclosed which has an electrical conductor to which high voltage can be applied. A series of circuits formed by a switching point and a current-limiting element which contains PTC thermistors and varistors is arranged in the cable run of the electrical conductor. An apparatus for operating the switching point interacts with the current-limiting element. The current-limiting element has n (where n is a natural number greater than 1) series-connected parallel circuits each having at least one PTC thermistor and at least one varistor connected in parallel with it. A current sensor arranged in the cable run of the electrical conductor or those connections of one of the PTC thermistors and of the varistor connected in parallel with it which are interconnected at two junction points in one of the parallel circuits are operatively connected to the input of the operating apparatus.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: March 14, 2000
    Assignee: ABB Research Ltd.
    Inventors: Edgar Dullni, Joachim Glatz Reichenbach, Jan Kuhlefelt, Ruzica Loitzl, Zdenek Pelanek, J.o slashed.rgen Skindh.o slashed.j, Ralph Strumpler