Patents by Inventor Kellogg S. Johnson

Kellogg S. 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).

  • Expandable raku kiln
    Patent number: 9360254
    Abstract: A raku kiln has a fire ring with a cylindrical sidewall and bottom made of refractory material with a kiln shelf supported a few inches above the bottom to enclose a space that is superheated by burners. A firing-chamber rests on the fire ring and is lifted by a two aligned pulleys on top of a pole which rotates to move the chamber out of the way. A vertical pole mates with tubes on the chamber for vertical guidance during raising and lowering of the chamber. Flanges on the lower end of the chamber allow adding an extension chamber.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 7, 2016
    Inventor: Kellogg S. Johnson
  • EXPANDABLE RAKU KILN
    Publication number: 20140193763
    Abstract: A raku kiln has a fire ring with a cylindrical sidewall and bottom made of refractory material with a kiln shelf supported a few inches above the bottom to enclose a space that is superheated by burners. A firing-chamber rests on the fire ring and is lifted by a two aligned pulleys on top of a pole which rotates to move the chamber out of the way. A vertical pole mates with tubes on the chamber for vertical guidance during raising and lowering of the chamber. Flanges on the lower end of the chamber allow adding an extension chamber.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 10, 2014
    Inventor: Kellogg S. Johnson