Patents by Inventor Frank C. Marold

Frank C. Marold 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).

  • Chain tensioning mechanism for scraper elevator device
    Patent number: 3930323
    Abstract: A tensioning mechanism for the chain of a scraper elevator device that includes a pair of pivotally interconnected lever arms which support guide rollers. The lever arms are movable by an adjuster link in a scissors fashion for maintaining tension on the chain.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: January 6, 1976
    Assignee: General Motors Corporation
    Inventors: Frank C. Marold, James J. Cinadr