Patents by Inventor Friedrich Mayfeld

Friedrich Mayfeld 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: 4129209
    Abstract: The buckets of a bucket elevator are attached to selected links of a drive chain by means of brackets on their bottom walls fastened to two projecting lugs on the chain links, the brackets being spaced further apart than the link pins securing the associated links to adjacent links. An apron on one transverse end wall of each bucket covers the gap between consecutive buckets during travel in a straight path.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: December 12, 1978
    Inventor: Friedrich Mayfeld