Patents by Inventor Helena Leppäskoski

Helena Leppäskoski 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 arrangement for positioning a shoe of a shoe press/shoe calendar in a paper machine
    Patent number: 6790316
    Abstract: The invention relates to a method for positioning a shoe of a shoe press/shoe clender in a paper machine. In the method, the position of the shoe (11) of the shoe calender/shoe press is measured and, based on the results of the measurement, the position of the shoe is controlled so as to be as desired in the direction of nip compression. The invention also relates to an arrangment for positioning a shoe of a shoe press/shoe calender in a paper machine, which arrangment comprises a shoe roll (10) or equivalent which includes a shoe (11) and hydraulic cylinders (12) connected thereto for moving the shoe (11). The arrangement comprises further at least two measuring devices (15) for measuring the position of the shoe (11) and means (12) for controlling the position of the shoe (11) based the results obtained by means of the measuring devices so as to be as desired in the direction of nip compression.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: September 14, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Kari Hasanen, Timo Torvi, Helena Leppäskoski