Patents by Inventor Hans-Otto von Danwitz

Hans-Otto von Danwitz 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: 4843807
    Abstract: A skein of yarn is drawn through a protective tube prefabricated of a woven, tubular textile fabric and is connected in order to form an endless sling. The protective tube is formed of two length sections. These length sections, which are of approximately the same length, are pushed together only slightly during the manufacturing process. In this pushed-together form, they surround the upper reach and the lower reach of the drive formed during drawing in of the skein of yarn by the strands of yarn which are placed around the wheel discs of the manufacturing apparatus.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: July 4, 1989
    Assignee: Spanset Inter AG
    Inventor: Hans-Otto von Danwitz
  • Patent number: 4584785
    Abstract: In a strap or tubing of woven fabric and/or plastic for fastening, lifting and transporting purposes, in particular for a round sling tubing, the strap (1) or the tubing (7) is provided with symbols (5), patterns, numbers or the like, which extend from at least one surface (6) of the strap or tubing to a space plane different therefrom.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: April 29, 1986
    Assignee: Spanset Inter AG
    Inventor: Hans-Otto von Danwitz
  • Patent number: 4421352
    Abstract: A loop formed of a core in the form of one or a plurality of yarn skeins and a seamlessly woven protective sheath which encloses the entire core with considerable play is provided with one or two diagonally oppositely disposed woven flat ribs so as to cause the protective sheath to take on a flat oval cross-sectional configuration even before a load is attached and/or to serve as the support for a connecting seam for two juxtaposed loop strands. The seams may also be used to fasten an abrasion protection cover. The seams may likewise be used to connect a plurality of loops or slings to form a loop mat.
    Type: Grant
    Filed: September 9, 1981
    Date of Patent: December 20, 1983
    Assignee: Spanset Inter AG
    Inventors: Karl M. Raue, Hans-Otto von Danwitz