Patents by Inventor Ernest E. Cowell

Ernest E. Cowell 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).

  • Chimney by-pass
    Patent number: 4821473
    Abstract: A chimney by-pass is disclosed for use with a main chimney. In case of a chimney fire, a movable damper closes off the main chimney, substantially reducing the severity of the chimney fire. The movable damper also opens an auxiliary chimney, allowing smoke to exit, uninterrupted through the auxiliary chimney, and may include a fan to assist the exit of smoke into the atmosphere. The movable damper may be actuated manually or automatically in case of a chimney fire.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: April 18, 1989
    Inventor: Ernest E. Cowell