Patents by Inventor Matti Kurki

Matti Kurki 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).

  • Publication number: 20190292725
    Abstract: A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight lignin and pulp.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 26, 2019
    Inventor: Matti KURKI
  • Patent number: 7799170
    Abstract: In a paper or board machine drying line after the wire section, during dewatering a web's (W) width is affected in a direction crosswise to the web's traveling direction. Starting from an edge, at least one device (20A, 20B) brings about a force effect of a desired magnitude which is directed all the way to a desired arbitrary crosswise web position in order to modify web characteristics. A device in a paper or board machine line after the wire section has means for processing the web and for dewatering. The paper or board machine line after the wire section further has at least one device (20A; 20B) for directing a force effect at a desired partial area (WS) of the web (W) in the cross machine direction in order to modify the web's characteristics profile in the cross machine direction.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: September 21, 2010
    Assignee: Metso Paper, Inc.
    Inventors: John Shakespeare, Taisto Huhtelin, Pasi Kekko, Markku Lummila, Pekka Pakarinen, Vesa Vuorinen, Matti Kurki, Jaana Pienmäki, Asko Majori, Kari Holopainen
  • Patent number: 7422662
    Abstract: The invention relates to a sealing arrangement (7) against a moving fabric (4b) in a paper machine or the like. The sealing arrangement includes a stiff sealing element (9) placed on the fabric's (4b) side on the entire width in connection with a paper sheet (4a) supported by the fabric (4b). The sealing element has been arranged on a support so that the location of the sealing element with respect to the fabric (4b) can be adjusted nearer to or, correspondingly, further from the fabric. As a sealing element there is at least a single-chambered labyrinth sealing (19).
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: September 9, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Juha Leimu, Antti Komulainen, Kari Juppi, Matti Kurki, Martti Salminen, Reijo Jokinen
  • Publication number: 20080178487
    Abstract: An arrangement in connection with the press and dryer section of a web-forming machine includes first and second devices for transporting the web. The second device includes a dryer wire and a roll arranged to support it. In the arrangement there is an open gap between the first and second devices, across which the web is arranged to be transferred, so that the web and the dryer wire form a closing throat. The arrangement further includes a deflector before the open gap in the direction of travel of the dryer wire, which is arranged close to the dryer wire, in order to restrict the air layer travelling with the dryer wire, and thus to prevent the formation of an excess pressure in the closing throat.
    Type: Application
    Filed: August 17, 2004
    Publication date: July 31, 2008
    Inventors: Antti Komulainen, Matti Kurki, Juhani Vestola
  • Patent number: 7351309
    Abstract: A roll in a paper or board machine has a roll frame or center shaft (15) with bearings mounted at its ends and a groove-like surface structure (10). There is a contact between the surface structure and the center shaft so that an essentially closed structure is formed. The roll produces a vacuum that keeps the web attached to the outer surface of a fabric in the fabric wrap area of the roll circle by utilizing the boundary layer airflows of the surface structure flow and/or of the web. A dryer group has at least one contact dryer cylinder and at least one turning roll with a single fabric run arrangement.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: April 1, 2008
    Assignee: Metso Paper, Inc.
    Inventors: Matti Kurki, Pekka Martikainen
  • Publication number: 20070175605
    Abstract: In a paper or board machine drying line after the wire section, dewatering web's (W) width is affected in a direction crosswise to the web's traveling direction. Starting from an edge, at least one device (20A, 20B) brings about a force effect of a desired magnitude which is directed all the way to a desired arbitrary crosswise web position in order to modify web characteristics. A device in a paper or board machine line after the wire section has means for processing the web and for dewatering. The paper or board machine line after the wire section further has at least one device (20A; 20B) for directing a force effect at a desired partial area (WS) of the web (W) in the cross machine direction in order to modify the web's characteristics profile in the cross machine direction.
    Type: Application
    Filed: March 9, 2005
    Publication date: August 2, 2007
    Inventors: John Shakespeare, Taisto Huhtelin, Pasi Kekko, Markku Lummila, Pekka Pakarinen, Vesa Vuorinen, Matti Kurki, Jaana Pienmaki, Asko Majori, Holopainen Kari
  • Patent number: 7036242
    Abstract: An apparatus for a dryer section of a paper or board machine has a drying group (R) and an impingement drying unit (10) which is placed above and/or below a row (DSR) of drying cylinders (3). A drying fabric (1) supported paper or board web (2) is conducted past the impingement drying unit (10) having at least one impingement surface (IP1, IP2) the side profile of which is straight, changeably curved in its radius of curvature, in the shape of a broken line or a selectable combination of these, and that the impingement surface or a tangent line to the impingement surface or a line passing via the beginning and the end of the impingement surface or an extension of the line forms on the impingement side an angle with a horizontal plane parallel to the machine level, which angle is ?120°, advantageously 120°–60°, most advantageously about 90°.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: May 2, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Antti Komulainen, Matti Kurki, Martti Salminen, Kari Juppi, Juha Kaihovirta, Antti Kuhasalo
  • Publication number: 20060070258
    Abstract: The invention relates to a sealing arrangement (7) against a moving fabric (4b) in a paper machine or the like. The sealing arrangement includes a stiff sealing element (9) placed on the fabric's (4b) side on the entire width in connection with a paper sheet (4a) supported by the fabric (4b). The sealing element has been arranged on a support so that the location of the sealing element with respect to the fabric (4b) can be adjusted nearer to or, correspondingly, further from the fabric. As a sealing element there is at least a single-chambered labyrinth sealing (19).
    Type: Application
    Filed: November 19, 2003
    Publication date: April 6, 2006
    Inventors: Juha Leimu, Antti Komulainen, Kari Juppi, Matti Kurki, Martti Salminen, Reijo Jokinen
  • Patent number: 6916404
    Abstract: A method and an apparatus for web threading in a drying section of a paper machine or the like. A leader (24) and a so called run-down strip are formed by cutting in the web coming to the drying cylinder in the drying section. An underpressure box (18) is arranged at the opening gap between the drying cylinder (14) and the drying wire, on that side of the wire which is away from the web, whereby this box can direct against the web an underpressure which is controllable in the machine's cross direction. The underpressure box creates an underpressure region (34?) between the leader and the underpressure box, the region having an underpressure p1 at the detachment point, i.e. in the area where the wire is detached from said drying cylinder (14), which underpressure is sufficient to detach the leader from said drying cylinder.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: July 12, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Antti Komulainen, Kari Juppi, Jorma Laapotti, Reijo Jokinen, Matti Kurki, Juha Lipponen, Markku Lyytinen, Samppa J. Salminen
  • Publication number: 20050075229
    Abstract: A roll in a paper or board machine has a roll frame or center shaft (15) with bearings mounted at its ends and a groove-like surface structure (10). There is a contact between the surface structure and the center shaft so that an essentially closed structure is formed. The roll produces a vacuum that keeps the web attached to the outer surface of a fabric in the fabric wrap area of the roll circle by utilizing the boundary layer airflows of the surface structure flow and/or of the web. A dryer group has at least one contact dryer cylinder and at least one turning roll with a single fabric run arrangement.
    Type: Application
    Filed: October 6, 2004
    Publication date: April 7, 2005
    Inventors: Matti Kurki, Pekka Martikainen
  • Publication number: 20040049940
    Abstract: An apparatus for a dryer section of a paper or board machine[, which comprises] has a drying group (R) and an impingement drying unit (10) which is placed above and/or below a row (DSR) of drying cylinders (3)[and in which a]. A drying fabric (1) supported paper or board web (2) [has been arranged to be]is conducted past the impingement drying unit [while supported by a drying fabric (1), such as a wire or equivalent.
    Type: Application
    Filed: September 29, 2003
    Publication date: March 18, 2004
    Inventors: Antti Komulainen, Matti Kurki, Martti Salminen, Kari Juppi, Juha Kaihovirta, Antti Kuhasalo
  • Publication number: 20040035539
    Abstract: A method and an apparatus for web threading in a drying section of a paper machine or the like. A leader (24) and a so called run-down strip are formed by cutting in the web coming to the drying cylinder in the drying section. An underpressure box (18) is arranged at the opening gap between the drying cylinder (14) and the drying wire, on that side of the wire which is away from the web, whereby this box can direct against the web an underpressure which is controllable in the machine's cross direction. The underpressure box creates an underpressure region (34′) between the leader and the underpressure box, the region having an underpressure p1 at the detachment point, i.e. in the area where the wire is detached from said drying cylinder (14), which underpressure is sufficient to detach the leader from said drying cylinder.
    Type: Application
    Filed: April 16, 2003
    Publication date: February 26, 2004
    Inventors: Antti Komulainen, Kari Juppi, Jorma Laapotti, Reijo Jokinen, Matti Kurki, Juha Lipponen, Markku Lyytinen, Samppa J. Salminen
  • Patent number: 6612158
    Abstract: A web is passed over a surface (11) which is at least partly curved in the running direction of the web, which extends across the web in the cross direction, and which is placed at a distance from the web, in which connection an air cushion is formed between the moving web and the curved surface. The temperature and moisture of the web are measured indirectly by measuring the temperature and moisture of the air cushion by several detectors (41) which are in communication with openings (40) formed in the curved surface in spaced relationship with one another in the cross direction of the web.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 2, 2003
    Assignee: Metso Paper, Inc.
    Inventors: Reijo Huuskonen, Antti Komulainen, Matti Kurki
  • Patent number: 6247247
    Abstract: A blow box used in the drying section of a papermaking machine and a method for sealing a pocket provided with a blow box, and a blow nozzle. The blow box is arranged to eject air away from the space between a wire and the blow box and/or maintain an underpressure zone in this space. In the interface between the desired underpressure zone and an outside volume, the blow box is provided with a sealing element, such as a blow nozzle, protruding towards the wire to a certain distance “d” seen from the wire, for forming a seal between the underpressure zone and the area remaining outside the underpressure zone. The sealing element is connected to the blow box so that the element may be moved away from the wire to a distance “D” by a push and/or by an actuator, the distance “D” being greater than the distance “d”.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: June 19, 2001
    Assignee: Metso Paper, Inc.
    Inventors: Seppo Yömaa, Matti Kurki, Raimo Virta, Reijo Jokinen, Hannu Kokkala