Patents by Inventor Friedhelm Huebner

Friedhelm Huebner 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).

  • Valve for a wet jigging machine for separating minerals
    Patent number: 4336132
    Abstract: An air valve for a wet settling machine includes a trapezoidal cross-section valve seat and a valve disk carried on a shaft. The shaft is directly actuated in alternate directions via an electromagnet surrounding the shaft and including a pair of oppositely poled magnetic sections.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: June 22, 1982
    Assignee: Klockner-Humboldt-Deutz AG
    Inventors: Friedhelm Huebner, Karl-Heinz Weiffen