Patents by Inventor Sigurdur Ragnar Sigurlidason

Sigurdur Ragnar Sigurlidason 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).

  • Patent number: 5894959
    Abstract: A spreading knife, comprising a main blade housing and a blade cover. The main blade housing has a reservoir for holding a viscous substance, such as condiment. A filling cap is located fully proximally on the spreading knife and is selectively removable for filling the reservoir. A main passageway extends distally from the reservoir, and is in fluid communication with the reservoir. A plurality of vertical passageways extend from the main passageway, each having a vertical passageway end. A blade cover has a flat spreading surface, pressurizes the main passageway and vertical passageways, and has dispensing openings in the flat spreading surface which correspond to the vertical passageway ends. A pump is operable to force air into the reservoir, and cause the substance to be dispensed through the dispensing openings onto the flat spreading surface to spread the condiment onto a bread surface.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: April 20, 1999
    Inventor: Sigurdur Ragnar Sigurlidason