Patents by Inventor Hans Lehrl

Hans Lehrl 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: 4403109
    Abstract: A prefabricated control element for high voltage apparatus, which can be slipped onto a bare or an insulated conductor, especially for fittings for high voltage cables, in the form of an electrical insulator, in which conductive layers which follow each other in the axial direction of the conductor are embedded, engaging each other, having the form of funnels and likewise consisting of elastic conductive material and having a wall thickness of 0.005 to 0.5 mm.In the manufacture of the control element, individual parts of the insulator are joined together with a material bond by means of the conductive layers which are made of a dispersion of carbon black enriched polymer.
    Type: Grant
    Filed: October 22, 1980
    Date of Patent: September 6, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans Lehrl, Reinhard Schroth