Patents by Inventor Tapio Metsälä

Tapio Metsälä 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 identifying mapping of paper machine actuator
    Patent number: 7128808
    Abstract: A method and an apparatus for identifying mapping of a paper machine by means of a mapping test. The invention comprises forming a mapping model which takes the linear and non-linear shrinkage of a paper web into account. The mapping test result is analyzed to form a non-linear shrinkage profile and a linear mapping error from it. The linear error and the non-linear shrinkage profile thus obtained are used in the mapping model.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: October 31, 2006
    Assignee: Metso Automation Oy
    Inventors: Tapio Metsälä, John Shakespeare
  • Method for identifying plural relations in a sheet manufacturing process
    Patent number: 6343240
    Abstract: The invention relates to method for identifying plural relations in a sheet manufacturing process. Sheet properties are deduced from a response in a pseudo-property profile to a cyclic stimulation. A pseudo-property profile is calculated using a phase lag equal to half the stimulation cycle time, with and without stimulation. The properties of the sheet are deduced from the difference between an excited pseudo-property profile and a reference pseudo-property profile.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: January 29, 2002
    Assignee: Neles Paper Automation OY
    Inventors: John Shakespeare, Tapio Metsälä