Patents by Inventor Seppo Pirinen

Seppo Pirinen 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: 5009096
    Abstract: The invention relates to a method for the replacing of working rolls in a rolling mill, wherein there is used a swiveling roll-replacement car which runs adjacent to the working rolls of the rolling mill, on a track parallel to the roll track, and can be aligned with the roll or the roll pair to be replaced. The transfer of the working-roll pair or the working roll from the roll stand to the roll-replacement car and the transfer of a new working-roll pair or working roll from the storage rack to the roll-replacement car take place simultaneously, and the positions of these working-roll pairs or respectively working rolls are interchanged, whereafter there are simultaneously transferred the said new working-roll pair or working roll to the rolling mill and the said old working-roll pair or respectively working roll into the storage rack.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: April 23, 1991
    Assignee: Rautaruukki Oy
    Inventors: Matti Maenpaa, Teuvo Lehtoluoma, Kauko Henttinen, Pertti Jokipalo, Aimo Saren, Seppo Pirinen