Patents by Inventor Karl-Ernst Luettgert

Karl-Ernst Luettgert 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: 4988160
    Abstract: A method for securely fixing optical waveguide leads to a connector includes particular steps to ensure that the connection between the connector and the waveguide leads is reliable. First, a winching procedure is utilized before attaching the waveguide lead containing cable to the connector. The winching procedure removes any excess length, i.e., slack, in the cable components that are used to absorb high tension stress. In the second step, after inserting the optical waveguide leads in an elastic positioning member and compressing the positioning member to arrest the leads and thereby form crescent-shaped cavities between the waveguide leads and the positioning member, the cavities are filled with a quick-hardening glue.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: January 29, 1991
    Assignee: Siemensaktiengesellschaft
    Inventors: Karl-Ernst Luettgert, Klaus Schulz