Patents by Inventor Michael D. Praetzel

Michael D. Praetzel 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: 5421375
    Abstract: A method of weaving on a loom a multilayer paper forming fabric in an eight warp repeating pattern. The weaving is controlled to produce uniform drainage channels throughout the forming fabric. The paper forming fabric is formed to have a weft yarn dominant paper support surface and a weft yarn dominant running surface. The loom includes a reed which has a plurality of reed teeth which form dents. A single layer of side-by-side warp yarns are arranged through the dents of the reed so that each warp yarn engages with at least one reed tooth. A weft yarn of a first layer of weft yarns is woven with the warp yarn to form the weft dominant paper support and a weft yarn of a second layer of weft yarns is woven with the warp yarn to form the weft dominant running surface.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: June 6, 1995
    Assignee: Wangner Systems Corporation
    Inventor: Michael D. Praetzel