Patents by Inventor David D. Stasinski

David D. Stasinski 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).

  • Adjustment of motion of screening machine
    Patent number: 4057492
    Abstract: The screening motion of a screening machine is changed by adding ballast, while the machine is in operation, to selected closed compartments moving with the vibrating assembly. In the preferred embodiment, the ballast is added through flexible tubing which is inserted through ports that close with spring loaded oil hole caps. When the tubing is pulled from the ports, the caps snap closed to capture the ballast in the selected compartments.
    Type: Grant
    Filed: June 18, 1976
    Date of Patent: November 8, 1977
    Assignee: Rotex, Inc.
    Inventors: David D. Stasinski, William E. Lower