Patents by Inventor Donald R. DeMaagd

Donald R. DeMaagd 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: 4219902
    Abstract: A brush assembly is fixedly mounted to each side wall of a vacuum cleaner head closely adjacent the axis of a rotary brush. The brush bristles of each assembly are directed so as to brushingly engage the wall-floor corner. The brushes are aligned in the direction of longitudinal movement of the vacuum cleaner. A guide slot is formed in the head adjacent the end of each brush assembly, with each slot providing communication between the outside of the head and the vacuum chamber containing the rotary brush. Dirt and debris loosened by the brush assemblies is sucked through the channels formed by the slots and the floor, and then into the path of the rotary brush and into the vacuum chamber.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: September 2, 1980
    Assignee: Oreck Corporation
    Inventor: Donald R. DeMaagd