Patents by Inventor Weng S. Kow

Weng S. Kow 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).

  • Spiral separator with replaceable trough sections
    Patent number: 6336559
    Abstract: Replaceable inserts are provided in depressions of a spiral separator wherein the inserts have surface irregularities to optimize the spiral efficiencies in separating feed stock materials. These irregularities become worn by the materials and would require replacement of the spiral, ordinarily, whereas new inserts herein greatly extend the useful life of the spiral. Also, if the feed of the spiral changes appropriate new inserts may be used to separate the changed feed. The inserts may be any shape, circular being preferred when adjustability is needed.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: January 8, 2002
    Assignee: Outokumpu Oyj
    Inventors: Frank S. Knoll, Weng S. Kow, Timo U. Niitti