Patents by Inventor Ludwig Kostrewa

Ludwig Kostrewa 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: 4860884
    Abstract: A bucket conveyor including self-scooping bucket elements, a support structure, and a mechanism for displacing the elements over a closed path along the support structure for conveying bulk material from a region below the structure to a region in the vicinity of the top of the support structure, the closed path having two substantially parallel reaches, each reach having a vertical portion. The support structure includes: a vertically oriented upper member extending from the region of the top of the support structure; a lower member connected to the upper member for pivotal movement relative to the upper member; and a base member connected to the lower member for pivotal movement relative to the lower member and having a longitudinal dimension which is inclined to the vertical and protrudes laterally from the structure.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: August 29, 1989
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventor: Ludwig Kostrewa