Patents by Inventor Arthur E. Knutson

Arthur E. Knutson 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).

  • Kitchen range safety shutoff
    Patent number: 4659909
    Abstract: A smoke detector is mounted externally of but adjacent to an electric kitchen range and supplies an electrical signal when smoke is detected. Such signal actuates a relay to interrupt the supply of power to the range. The relay can be interposed between the range plug and its wall receptacle so that no modification to the internal range circuitry is required, and can require a manual resetting operation before the supply of power to the range is resumed.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: April 21, 1987
    Inventor: Arthur E. Knutson