Patents by Inventor William G. Cunningham

William G. Cunningham 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).

  • Multi-function showerhead filter system
    Patent number: 6796518
    Abstract: A multi-function showerhead filter system includes a ball-like swivel-mounted inlet joint having a fluid input to the housing, the inlet joint including a fluid input cavity converging, at a distal end, into a venturi outlet. The system also includes a pressure chamber formed within the housing, downstream of the venturi outlet and in fluid communication with it, the chamber having an inlet at least equal to a largest radius of the venturi outlet. The system also includes a turbulence-inducing water filter cartridge secured within the housing downstream of the pressure chamber and having an inlet surface in fluid and mechanical communication with it. The system further includes an output within the housing, secured downstream of the filter cartridge and in fluid communication with it, the output of which is passed through the cartridge, into one of the function modes of spraying, bubbling and massaging.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 28, 2004
    Inventors: John H. Douglas, William G. Cunningham
  • Multi-funtion showerhead filter system
    Publication number: 20040056123
    Abstract: A multi-function showerhead filter system includes a ball-like swivel-mounted inlet joint having a fluid input to the housing, the inlet joint including a fluid input cavity converging, at a distal end, into a venturi outlet. The system also includes a pressure chamber formed within the housing, downstream of the venturi outlet and in fluid communication with it, the chamber having an inlet at least equal to a largest radius of the venturi outlet. The system also includes a turbulence-inducing water filter cartridge secured within the housing downstream of the pressure chamber and having an inlet surface in fluid and mechanical communication with it. The system further includes an output within the housing, secured downstream of the filter cartridge and in fluid communication with it, the output of which is passed through the cartridge, into one of the function modes of spraying, bubbling and massaging.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Inventors: John H. Douglas, William G. Cunningham