Patents by Inventor Kalle Hasu

Kalle Hasu 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 for controlling one or more surface quality variables of a fiber web in a shoe calender
    Patent number: 7235157
    Abstract: The invention relates to a method for controlling a surface quality variable (300) in one or more fiber webs (3) in a shoe calender (1) comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element (8) and the loading pressure difference between the leading edge (8?) and the trailing edge (8?) of the shoe element are controlled so as to achieve minimum difference between the determined values (300?) for the surface quality variables of the fiber web and the set values (300?) for the same quality variables after the shoe calender.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: June 26, 2007
    Assignee: Metso Paper, Inc.
    Inventors: Tapio Mäenpää, Kalle Hasu, Matti Lares, Pekka Koivukunnas
  • Method for controlling one or more surface quality variables of a fibre web in a shoe calender
    Publication number: 20040045454
    Abstract: The invention relates to a method for controlling a surface quality variable (300) in one or more fibre webs (3) in a shoe calender (1) comprising one or more calender nips. In each calender nip of the shoe calender, the overall loading pressure of the shoe element (8) and the loading pressure difference between the leading edge (8′) and the trailing edge (8″) of the shoe element are controlled so as to achieve minimum difference between the determined values (300″) for the surface quality variables of the fibre web and the set values (300′) for the same quality variables after the shoe calender.
    Type: Application
    Filed: July 1, 2003
    Publication date: March 11, 2004
    Inventors: Tapio Maenpaa, Kalle Hasu, Matti Lares, Pekka Koivukunnas