Patents by Inventor Jost Hefter

Jost Hefter 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).

  • Consecutive multi-ply formers with an unencumbered doffer felt
    Patent number: 4004968
    Abstract: A wire is passed over the suction breast roll between the formed paper web and the doffer belt or the previously formed paper webs and doffer belt. The doffer felt is disposed in an unencumbered fashion over each of a plurality of consecutive suction breast rolls. The wire is removed from the web at a downstream point outside the dewatering influence of each breast roll. Stripping of the wire from the paper web is aided by various suction devices or couch rolls at this latter point.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: January 25, 1977
    Assignee: Escher Wyss G.m.b.H.
    Inventors: Heinz Braun, Hans Dahl, Jost Hefter, Wolf-Gunter Stotz