Patents by Inventor Wilhelm Dieter

Wilhelm Dieter 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).

  • Method for forming a ring with a chamfered section
    Patent number: 6122814
    Abstract: A process for manufacturing a ring that has at least one cylindrical end section that ends in a chamfer is disclosed. The process entails providing a flat-shaped article which is formed of a material capable of being deep-drawn. The flat-shaped article is stamped to provide indentations which correspond to the chamfer in the finished product. The flat-shaped article is then punched out to form a preform. The preform is then deep drawn, converting the preform into the shape of the ring. In the step of deep drawing the preform, the indentations form a chamfered section on the ring.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: September 26, 2000
    Assignee: Firma Carl Freudenberg
    Inventors: Helmet Pennig, Wolfgang Nickl, Wilhelm Dieter