Patents by Inventor Dietmar Holzwarth

Dietmar Holzwarth 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: 6341634
    Abstract: The invention relates to an anti-skid chain with a travelling net, held by an inner and outer holding device. The outer holding device is designed as a flat disk (8), at least in the area of the tire flank. Furthermore, the outer holding device has means for accomodating a tension rod (3) for the inner holding device outside the wheel flanks.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: January 29, 2002
    Assignee: RUD-Kettenfabrik Rieger & Dietz GmbH u. Co.
    Inventor: Dietmar Holzwarth
  • Patent number: 4390053
    Abstract: In the case of an anti-slip chain, possessing an inner and outer holding device (4,5) which holds a chain-net, a tensioning chain-strand (7) runs from the inner holding device (4), over the tread of the tire, to the outer holding device (5). In order to guarantee that the tensioning chain-strand (7) is correctly guided in the region of the tread of the tire, the said strand is led through a sliding sleeve (9,11) which is located at the end of a track piece (3) and is comparatively long.
    Type: Grant
    Filed: August 9, 1981
    Date of Patent: June 28, 1983
    Assignee: RUD-Kettenfabrik Rieger 6 Dietz GmbH u. Co.
    Inventors: Hansjorg Rieger, Dietmar Holzwarth
  • Patent number: 4063583
    Abstract: A tire chain with separable chain strands the end links of which are connectable at each separation point by use of two connecting elements which can be hooked into each other and which are each safely connected with an end link, wherein each connecting element has a body comprising at least one portion bounding an insertion slot which portion has a cross-section decreased at its free end at the expense of its width and wherein the width of the insertion slot is smaller than the height of each of those portions of the body which bound the insertion slot.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: December 20, 1977
    Inventors: Dr. Hansjorg Rieger, Leo Kess, Dietmar Holzwarth