Patents by Inventor William E. Spradley

William E. Spradley 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).

  • Method and apparatus for aerating an aqueous solution
    Patent number: 5350543
    Abstract: A method and apparatus for aerating an aqueous solution is disclosed comprising a vortex cylinder for receiving an aqueous solution stream under pressure. The aqueous solution stream is tangentially injected into the vortex cylinder forming a descending swirling vortex of aqueous solution. The swirling vortex develops a negative pressure zone for drawing air into the vortex through an air intake tube open to ambient pressure. The air and aqueous solution are mixed in a mixing chamber for supersaturating the aqueous solution with dissolved oxygen.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: September 27, 1994
    Inventor: William E. Spradley