Patents by Inventor Donna J. Johnson

Donna J. Johnson 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).

  • Publication number: 20110162745
    Abstract: Apparatus for adding liquid fertilizer to a water line of a sprinkler system includes a mechanical injector device powered by a paddle wheel turned by water flowing through the water line. As the paddle wheel is turned, liquid fertilizer can be advantageously mixed with the irrigation water or other fluid. The fertilizer reservoir can be positioned on the upper portion of the injector apparatus and can include an inlet connection and a button used to hydraulically prime the system. The fertilizer may be fed into the reservoir via tubing from a separately contained fertilizer source. In some embodiments, an inlet nozzle may increase the inlet velocity of the water, thereby permitting the paddle wheel to operate over a greater flow rate range. The tubing or other conduit can be connected to the fertilizer source container via a quick-connect fitting.
    Type: Application
    Filed: January 3, 2011
    Publication date: July 7, 2011
    Inventors: Glen Grizzle, Dave Morton, Dwight Johnson, Donna J. Johnson
  • Patent number: 6047707
    Abstract: A new Hair Grooming System having both a Curling Attachment and a Brush Attachment for allowing users to easily style their with minimal effort. The inventive device includes comprises a handle, a curling attachment and a brush attachment.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: April 11, 2000
    Inventor: Donna J. Johnson