Patents by Inventor Wilhelm Parbel

Wilhelm Parbel 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).

  • Assembly for connecting a metal member to a ceramic refractory member
    Patent number: 4923225
    Abstract: A member formed of ceramic refractory material has therein an opening. A metal coupling member for attaching a metal member such as a rod or a tube, to the refractory member has an externally threaded portion extending into the opening in the refractory member. The coupling member has a head extending radially outwardly beyond the threads of the threaded portion and embedded in the refractory member. The opening in the refractory member may be internally threaded to receive the threads of the threaded portion of the coupling member.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: May 8, 1990
    Assignee: Didier-Werke AG
    Inventors: Ernst Luhrsen, Siegfried Pohl, Albert Ott, Wilhelm Parbel, Karl Baum