Patents by Inventor Werner Luthi

Werner Luthi 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: 4670632
    Abstract: The high-voltage switch with a closing resistor has a main switch point and, parallel to this, an auxiliary switch point, the closing resistor (19) being in series with the auxiliary switch point. A movable contact (17) of the auxiliary switch point is driven via a thrust-crank drive (16), in such a way that it closes before the main switch point and opens again after the main switch point has closed.In this high-voltage switch, the object is to achieve a cycle of movement which, while ensuring a saving of components of the drive, can be adapted in a simple way to differing network conditions.This is achieved because the thrust-crank drive (16) has a compressible joint (23), and because the movable contact (17) is coupled to two impact rings (34, 35) which interact with two stops (36, 37).
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: June 2, 1987
    Assignee: BBC Brown, Boveri & Company, Ltd.
    Inventors: Walter Bischofberger, Heinz Eichholzer, Werner Graber, Jiri Talir, Edgar Hochspach, Werner Luthi