Patents by Inventor Ate Postma

Ate Postma 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).

  • Coupling capacitor having an integrated connecting cable
    Patent number: 6255935
    Abstract: The invention relates to a simplified and cost-effective apparatus for injecting signals into electrical power lines at the high-voltage or medium-voltage level. A coupling unit which is simple to assemble and is protected against direct contact is proposed, in which the connecting cable 9 is integrated in the housing 10 of the coupling capacitor 8. In the region where the conductor 20 passes through the grounded housing 10 of the coupling capacitor 8, the electrical field is reduced by means of the housing wall having a special shape 10a. A smooth field distribution is achieved by suitable rounding of the formed region 10a which is provided for the insertion of the connecting cable 9.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: July 3, 2001
    Assignee: ABB Research Ltd.
    Inventors: Josef Lehmann, Jakob Rhyner, Ate Postma, Bernhard Doser