Patents by Inventor Willi Heinrich

Willi Heinrich 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: 6237808
    Abstract: In a method for emptying drums which are filled with solids and the lids of which have already been removed, the drum base is separated from the drum and the solids are forced out of the drum with the aid of a pressing body. An apparatus for emptying drums filled with solids has a cutting ring for removing the drum base. For the purpose of emptying the drum freed from the drum base and the rum lid, the apparatus has a pressing body which is in the form of a ram and, driven by hydraulic cylinders, can be displaced along the longitudinal axis in the direction of the cutting ring. A stop supports the drum against force acting in the direction of displacement while the solids are being forced out of the drum by the ram.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: May 29, 2001
    Assignee: Von Roll Umwelttechnik AG
    Inventors: Peter C. Straub, Willi Heinrich