Patents by Inventor William R. Hatchmann

William R. Hatchmann 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: 4974282
    Abstract: An improved cleaning system is provided for use in cleaning upholstery such as carpet, drapes, furniture coverings, etc. The system includes a cleaning unit having a solution tank for receiving a selected cleaning solution, in combination with a pump and associated flow lines for delivering the cleaning solution to a cleaning tool. The system further includes a vacuum unit having a vacuum tank and associated pump and hose for vacuuming excess cleaning solution and debris from an upholstered surface. A multiported control valve interconnects the cleaning unit with the vacuum unit for facilitating removal of cleaning solution from the solution tank and associated flow lines as well as the cleaning tool.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: December 4, 1990
    Assignee: Kleen-Rite Upholstery & Carpet Cleaning System
    Inventors: Lawrence E. Stoltz, Arlen M. Knight, William R. Hatchmann