Patents Assigned to Klaus Wilhelm
  • Patent number: 6036408
    Abstract: An improved extraction apparatus for bulk material containers, in particular for bins (1) filled with a pourable bulk material (3), comprises a suction head which can be lowered onto the bulk material (3). According to the improvement, provision is made for the suction head (10) to be provided with a float (11), floating in or on the bulk material (3), and to be held above it, and for the oscillation control device (35) to be arranged in such a way that the suction head (10) and/or the float (11) can be caused at least indirectly to oscillate.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: March 14, 2000
    Assignee: Klaus Wilhelm
    Inventors: Klaus Wilhelm, Walter Fritz