Patents by Inventor Stig Janson

Stig Janson 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).

  • Device for operating air governing means at a refuse burning furnace
    Patent number: 3943861
    Abstract: Air admittance ports in the wall of a refuse burning furnace are provided with reciprocable sleeve members which in the first hand govern the air flow, but also may be used to scrape the ports free of deposits. These sleeves are interconnected in groups so they can be manipulated simultaneously for cleaning purposes, but nevertheless may be adjusted individually as well as group-wise for flow governing purposes.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: March 16, 1976
    Assignee: Gotaverken Angteknik AB
    Inventors: Ingmar Astrom, Stig Janson