Patents by Inventor John E. Grogan

John E. Grogan 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).

  • Rotary brush
    Patent number: 3995346
    Abstract: This invention is concerned with a superior rotary brush wherein an elongated brush member is coiled in a helical fashion around a central shaft or cylinder which incorporates a plurality of projections on its outer periphery. The elongated brush member is bent around the projections of said shaft or cylinder in such a fashion that its inner periphery is non-arcuate. The inner periphery of said elongated brush member forms a plurality of cords which generally circumscribe the central shaft or cylinder. In use the inner periphery of the elongated brush member engages the projections as are contained on the central shaft or cylinder in such a manner that movement of the elongated brush member in relation to central shaft or cylinder is prevented.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: December 7, 1976
    Assignee: Power Brush Inc.
    Inventors: John E. Grogan, Gerard A. Parseghian