Patents by Inventor Jouko Tyrmi

Jouko Tyrmi 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).

  • Method and apparatus for eliminating the flutter of a paper web in the dryer section of a papermaking machine between two single felt configurations therein
    Patent number: 5438765
    Abstract: The present invention is a method and apparatus for eliminating the flutter of a paper web in the dryer section of a papermaking machine between two single felt configurations in which the web is transferred from a dryer fabric of a first configuration onto a dryer fabric of a second configuration along a common run of the fabrics, the transfer being effected from one fabric to the other by means of a vacuum transfer roll, with the second configuration dryer fabric being brought into contact with the web and around which the fabric is winding, whereby on the side of the first configuration dryer fabric upstream of a contact point between the web carried thereon and the second configuration dryer fabric winding around the vacuum transfer roll there is provided a vacuum zone defined by the first configuration dryer fabric for retaining the web in contact with the first configuration dryer fabric.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: August 8, 1995
    Assignee: Valmet Paper Machinery Inc.
    Inventors: Jouko Tyrmi, Timo Haverinen