Patents by Inventor John S. Brewster

John S. Brewster 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).

  • Patent number: 5257435
    Abstract: A chimney cleaning tool for removing accumulations of foreign materials from the interior surfaces of smoke chambers and chimney flues of fireplaces and furnaces. The invention comprises a hub which is adapted to be rotated by a power driven rod, a single resilient multi-wire cable clamped to the hub and U-bolts with hex nuts for clamping the cable to the hub. The cable has loop shaped portions arranged in perpendicular relationship to the rotational axis of the hub which extend outwardly from the hub. When the tool is inserted into a chimney flue, rotated, and brought to bear against the interior surfaces of the flue, the outer portions of loops rapidly remove accumulated materials from the flue without damaging the flue. The invention can also be used for removing materials which accumulate on the walls of other conduits, such as sewers and oil well casings.
    Type: Grant
    Filed: February 27, 1992
    Date of Patent: November 2, 1993
    Inventor: John S. Brewster