Patents by Inventor Marvin W. Usimaki

Marvin W. Usimaki 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).

  • Slide hammer chimney cleaner
    Patent number: 4802256
    Abstract: A chimney cleaning apparatus (10) is suspended from a chain (34) for movement through a chimney flue (16) and includes a scraping plate (12). The outer periphery of the scraping plate (12) conforms to the cross-sectional shape of the chimney flue (16) and is rigid for unyielding by moving through the flue (16) in a perfectly transverse orientation to clean all debris therefrom. The scraping plate (12) is slidable along a weighted shaft (22) for enabling the apparatus (10) to be hammered through the chimney flue (16).
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: February 7, 1989
    Inventor: Marvin W. Usimaki