Patents by Inventor Hans Beffart

Hans Beffart 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).

  • Support tubes for cross-wound coils and cross-windings
    Patent number: 4442686
    Abstract: A support tube for cross-wound coils and cross-wound windings for the bleaching and dyeing of shrinking yarns consisting of a strip, closed in itself, of a porous, elastic two-layer nonwoven fabric of synthetic fibers and/or endless fibers which are joined to each other, where the lower layer has a corrugation oriented parallel to the longitudinal direction, and the upper layer covers the folds formed by the corrugation on the outside and is connected firmly to the lower layer in the region of the largest diameter of the folds.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: April 17, 1984
    Assignee: Firma Carl Freudenberg
    Inventors: Hans Beffart, Hans M. Ries