Patents by Inventor Jouko Pirttimaa

Jouko Pirttimaa 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).

  • Arrangement and method for heating gas in a gas duct in connection with continuously operated sintering
    Patent number: 6767206
    Abstract: The invention relates to an arrangement and method for heating gases in a gas circulation duct in connection with continuously operated sintering. In the sintering furnace, hot gas is fed in from above the belt in order to sinter the material located on the belt, and part of the gas circulation duct is formed as a burning zone, a burner ring, where the gas is heated. The burner ring comprises at least one burner unit directed inwardly from the circumference of the gas circulation duct.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: July 27, 2004
    Assignee: Outokumpu Oyj
    Inventors: Pekka Niemela, Eero Väänänen, Jouko Pirttimaa, Olavi Tulkki
  • Arrangement and method for heating gas in a gas duct in connection with continuously operated sintering
    Publication number: 20030165789
    Abstract: The invention relates to an arrangement and method for heating gases in a gas circulation duct in connection with continuously operated sintering. In the sintering furnace, hot gas is fed in from above the belt in order to sinter the material located on the belt, and part of the gas circulation duct is formed as a burning zone, a burner ring, where the gas is heated. The burner ring comprises at least one burner unit directed inwardly from the circumference of the gas circulation duct.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 4, 2003
    Inventors: Pekka Niemela, Eero Vaananen, Jouko Pirttimaa, Olavi Tulkki