Patents by Inventor Gary J. Criswell

Gary J. Criswell 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).

  • Gas injector and method therefor
    Patent number: 7537707
    Abstract: A gas injector that is coupled to the pump strainer basket housing drain port of a pump-circulated system is disclosed. The gas injector that may be installed in a way that is less invasive than currently used gas injection systems to pre-existing plumbing of a pump system and that allows for more efficient gas absorption in water than currently used gas injection systems. The gas injector may be used with all currently existing pump systems.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: May 26, 2009
    Inventors: Gary J. Criswell, Kenneth G. Criswell
  • GAS INJECTOR AND METHOD THEREFOR
    Publication number: 20070216043
    Abstract: A gas injector that is coupled to the pump strainer basket housing drain port of a pump-circulated system is disclosed. The gas injector that may be installed in a way that is less invasive than currently used gas injection systems to pre-existing plumbing of a pump system and that allows for more efficient gas absorption in water than currently used gas injection systems. The gas injector may be used with all currently existing pump systems.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 20, 2007
    Inventors: Gary J. Criswell, Kenneth G. Criswell