Patents by Inventor Clark S. Richmond

Clark S. Richmond 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).

  • Motor driven brush assembly for vacuum cleaner
    Patent number: 4777691
    Abstract: A cylindrical motor driven brush for a vacuum cleaner or the like having a hollow outer cylinder and a plastic bristle tube assembly for insertion in the outer cylindrical tube. The insert tube is provided with a helical mounting strip with brush bristles thereon which is inserted through a correspondingly shaped slot in said outer cylindrical tube.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: October 18, 1988
    Assignee: National Union Electric Corporation
    Inventors: Clark S. Richmond, David A. Erickson
  • Lightweight battery powered suction broom
    Patent number: 4665582
    Abstract: A lightweight broom having a rechargeable battery powered vacuum pump and a mounting assembly for pivotally mounting a nozzle. The mounting assembly and power assembly are spaced apart on a frame carrying both assemblies, and a filter bag arrangement is removably received therebetween. The filter bag arrangement includes a canister adapted to removably fit on a frame between the mounting assembly and the power assembly.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: May 19, 1987
    Assignee: National Union Electric Corp.
    Inventors: Clark S. Richmond, Joyce K. Thomas, Samuel E. Hohulin