Patents by Inventor Friedhelm Siegmann

Friedhelm Siegmann 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: 5199938
    Abstract: A centrifuge drum for concentrating suspended solids, which are conveyed through channels out of an outer solids space in the drum and into a radially inner peeling chamber, whence they are diverted by a peeler and by an associated concentrate line. A separated clear phase is continuously extracted from the interior of the drum by another peeler and by an associated clear-phase line. The object is to prevent the concentrated solids from heating up undesirably even when their volume is small. There is an opening-and-closing communicating line between the concentrate line and the clear-phase line and an opening-and-closing recirculation line extending into the first peeling chamber from the clear-phase line. The communicating line and the recirculation line are closed to divert the solids and opened to discontinue the diversion.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: April 6, 1993
    Assignee: Westfalia Separator AG
    Inventors: Werner Kohlstette, Aloys Bokamp, Friedhelm Siegmann
  • Patent number: 4828865
    Abstract: A method for producing citrus juices with low final percentages of pulp. A centrifuge is used, with the space in the drum that receives the heavier phase, the phase with a high concentration of pulp, discontinusously emptied of at least some of the pulp through slide-activated extraction openings in the jacket of the drum. The light phase, the clarified juice, is continuously extracted. To ensure that the juice will be clarified considerably more effectively in the centrifuge at low energy and equipment costs, with the throughput increased incrementally, juice with a high concentration of pulp is continuously extracted from the centrifuge through channels or through an annular space that is demarcated on the inside by a large separating disk and that has an inflow opening at the largest inside diameter of the drum.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: May 9, 1989
    Assignee: Westfalia Separator AG
    Inventors: Werner Kohlstette, Peter Schottler, Friedhelm Siegmann