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).
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Publication number: 20240100357Abstract: A control circuit configured as a multi-criteria optimizer generates a radiation therapy treatment plan. The circuit then determines a resultant dose distribution as a function of the radiation therapy treatment plan and presents, on a display, at least a part of that resultant dose distribution. The latter may comprise, for example, presenting at least one isodose line on the display. The control circuit then detects user manipulation of a user interface. By one approach, this manipulation does not include corresponding immediate movement of any part of the presented resultant dose distribution itself. In particular, the detected user manipulation does not result in dragged movement of an isodose line on the display.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Inventors: Jani Kurki, Matti Kemppainen, Laura Korhonen, Veli-Pekka Kihniä, Lauri Halko, Jarmo Makkonen, Pekka Sorvari
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Publication number: 20230265612Abstract: A cooking method wherein partly digested wood based cellulosic raw material is compressed during cooking to provide high molecular weight xylan, lignin and pulp.Type: ApplicationFiled: June 23, 2021Publication date: August 24, 2023Applicant: AMPPC Finland OyInventor: Matti KURKI
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Publication number: 20230265611Abstract: A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight xylan, high molecular weight lignin and pulp.Type: ApplicationFiled: June 23, 2021Publication date: August 24, 2023Applicant: AMPPC Finland OyInventor: Matti KURKI
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Patent number: 11186948Abstract: 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: GrantFiled: May 27, 2016Date of Patent: November 30, 2021Assignee: FIBRATECH PTE. LTDInventor: Matti Kurki
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Publication number: 20190292725Abstract: 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: ApplicationFiled: May 27, 2016Publication date: September 26, 2019Inventor: Matti KURKI
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Patent number: 7799170Abstract: 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: GrantFiled: March 9, 2005Date of Patent: September 21, 2010Assignee: Metso Paper, Inc.Inventors: John Shakespeare, Taisto Huhtelin, Pasi Kekko, Markku Lummila, Pekka Pakarinen, Vesa Vuorinen, Matti Kurki, Jaana Pienmäki, Asko Majori, Kari Holopainen
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Patent number: 7422662Abstract: 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: GrantFiled: November 19, 2003Date of Patent: September 9, 2008Assignee: Metso Paper, Inc.Inventors: Juha Leimu, Antti Komulainen, Kari Juppi, Matti Kurki, Martti Salminen, Reijo Jokinen
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Publication number: 20080178487Abstract: 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: ApplicationFiled: August 17, 2004Publication date: July 31, 2008Inventors: Antti Komulainen, Matti Kurki, Juhani Vestola
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Patent number: 7351309Abstract: 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: GrantFiled: October 6, 2004Date of Patent: April 1, 2008Assignee: Metso Paper, Inc.Inventors: Matti Kurki, Pekka Martikainen
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Publication number: 20070175605Abstract: 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: ApplicationFiled: March 9, 2005Publication date: August 2, 2007Inventors: John Shakespeare, Taisto Huhtelin, Pasi Kekko, Markku Lummila, Pekka Pakarinen, Vesa Vuorinen, Matti Kurki, Jaana Pienmaki, Asko Majori, Holopainen Kari
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Patent number: 7036242Abstract: 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: GrantFiled: November 6, 2001Date of Patent: May 2, 2006Assignee: Metso Paper, Inc.Inventors: Antti Komulainen, Matti Kurki, Martti Salminen, Kari Juppi, Juha Kaihovirta, Antti Kuhasalo
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Publication number: 20060070258Abstract: 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: ApplicationFiled: November 19, 2003Publication date: April 6, 2006Inventors: Juha Leimu, Antti Komulainen, Kari Juppi, Matti Kurki, Martti Salminen, Reijo Jokinen
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Patent number: 6916404Abstract: 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: GrantFiled: October 26, 2001Date of Patent: July 12, 2005Assignee: Metso Paper, Inc.Inventors: Antti Komulainen, Kari Juppi, Jorma Laapotti, Reijo Jokinen, Matti Kurki, Juha Lipponen, Markku Lyytinen, Samppa J. Salminen
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Publication number: 20050075229Abstract: 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: ApplicationFiled: October 6, 2004Publication date: April 7, 2005Inventors: Matti Kurki, Pekka Martikainen
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Publication number: 20040049940Abstract: 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: ApplicationFiled: September 29, 2003Publication date: March 18, 2004Inventors: Antti Komulainen, Matti Kurki, Martti Salminen, Kari Juppi, Juha Kaihovirta, Antti Kuhasalo
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Publication number: 20040035539Abstract: 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: ApplicationFiled: April 16, 2003Publication date: February 26, 2004Inventors: Antti Komulainen, Kari Juppi, Jorma Laapotti, Reijo Jokinen, Matti Kurki, Juha Lipponen, Markku Lyytinen, Samppa J. Salminen
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Patent number: 6612158Abstract: 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: GrantFiled: April 29, 2002Date of Patent: September 2, 2003Assignee: Metso Paper, Inc.Inventors: Reijo Huuskonen, Antti Komulainen, Matti Kurki
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Patent number: 6247247Abstract: 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: GrantFiled: October 20, 1999Date of Patent: June 19, 2001Assignee: Metso Paper, Inc.Inventors: Seppo Yömaa, Matti Kurki, Raimo Virta, Reijo Jokinen, Hannu Kokkala