Patents by Inventor Vesa Ahvenniemi
Vesa Ahvenniemi 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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Patent number: 7932922Abstract: In a web-forming machine, a threading tail is formed from the web. The threading tail is transferred to the production section (10, 12-14) of the web-forming machine including a draw section (21). Monitoring takes place of both the formation of the threading tail and its transfer to the draw point (21). The holding point (24) and its environment that terminates the tail threading of the production section (10, 12-14) in question are additionally monitored, in order to detect the threading tail at the holding point (24) and thus to determine the success of the tail threading.Type: GrantFiled: November 19, 2004Date of Patent: April 26, 2011Assignee: Metso Paper, Inc.Inventors: Vesa Ahvenniemi, Juha Laitio
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Publication number: 20090020581Abstract: In a web-forming machine, a threading tail is formed from the web. The threading tail is transferred to the production section (10, 12-14) of the web-forming machine including a draw section (21). Monitoring takes place of both the formation of the threading tail and its transfer to the draw point (21). The holding point (24) and its environment that terminates the tail threading of the production section (10, 12-14) in question are additionally monitored, in order to detect the threading tail at the holding point (24) and thus to determine the success of the tail threading.Type: ApplicationFiled: November 19, 2004Publication date: January 22, 2009Applicant: METSO PAPER, INC.Inventors: Vesa Ahvenniemi, Juha Laitio
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Patent number: 7422661Abstract: Equipment for leading a web threading tail in a paper machine has at least two sequential surfaces (11) in the direction of travel of the web threading tail (10), between which a nozzle (12) is arranged to form a directed air blast and thus to transport the web threading tail (10). The equipment has an element (13) in which an exhaust zone (20) is arranged in the surface (11) before the nozzle (12) in the direction of travel of the web threading tail (10), for leading air away from the element (13) between the web threading tail (10) and the surface (11).Type: GrantFiled: July 1, 2004Date of Patent: September 9, 2008Assignee: Metso Paper, Inc.Inventors: Vesa Ahvenniemi, Bo Fagerström, Hannu Kasula, Jorma Kinnunen, Seppo Laine, Kenneth Widell, Juha Lipponen
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Patent number: 7377994Abstract: A web is threaded in the reeling of a paper or board web, by passing a web tail strip (W) into a reeling nip between a reeling drum (10) and a reel spool (12), on which a web roll is formed. The tail strip (W) is passed into the reeling nip by a suction zone (20) which extends substantially around the entire reeling drum circumference and is (10) in an area where a full-width web runs during reeling, so that the tail strip (w) can be conducted directly along the suction zone (20). The suction zone (20) is placed in the longitudinal direction of the reeling drum (10), i.e. in the width direction of the web.Type: GrantFiled: August 7, 2003Date of Patent: May 27, 2008Assignee: Metso Paper, Inc.Inventors: Vesa Ahvenniemi, Kenneth Widell, Hannu Kasula, Seppo Laine, Bo Fagerström
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Patent number: 7377999Abstract: An arrangement in the on-line finishing of a paper machine, which includes at least one finishing stage (12, 13) for the paper web produced, has cutting equipment (16) for forming the tail as well as tail threading equipment (15) for carrying the tail through the finishing stage (12, 13). At the end of the finishing stage (12, 13) there is a draw point (24), through which a carrier rope system (17) included in the tail threading equipment (15) is adapted to pass. The draw point (24) is formed between one cylinder (28) and a wire (29) arranged in contact with it for forming a single-contact draw point.Type: GrantFiled: November 3, 2003Date of Patent: May 27, 2008Assignee: Metso Paper, Inc.Inventors: Vesa Ahvenniemi, Jorma Kinnunen
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Publication number: 20060169734Abstract: Equipment for leading a web threading tail in a paper machine has at least two sequential surfaces (11) in the direction of travel of the web threading tail (10), between which a nozzle (12) is arranged to form a directed air blast and thus to transport the web threading tail (10). The equipment has an element (13) in which an exhaust zone (20) is arranged in the surface (11) before the nozzle (12) in the direction of travel of the web threading tail (10), for leading air away from the element (13) between the web threading tail (10) and the surface (11).Type: ApplicationFiled: July 1, 2004Publication date: August 3, 2006Inventors: Vesa Ahvenniemi, Bo Fagerstrom, Hannu Kasula, Jorma Kinnuen, Seppo Laine, Kenneth Widell, Juha Lipponen
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Publication number: 20060102309Abstract: An arrangement in the on-line finishing of a paper machine, which includes at least one finishing stage (12, 13) for the paper web produced, has cutting equipment (16) for forming the tail as well as tail threading equipment (15) for carrying the tail through the finishing stage (12, 13). At the end of the finishing stage (12, 13) there is a draw point (24), through which a carrier rope system (17) included in the tail threading equipment (15) is adapted to pass. The draw point (24) is formed between one cylinder (28) and a wire (29) arranged in contact with it for forming a single-contact draw point.Type: ApplicationFiled: November 3, 2003Publication date: May 18, 2006Inventors: Vesa Ahvenniemi, Jorma Kinnunen
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Publication number: 20050279476Abstract: A method in the on-line finishing of a paper machine has the successive finishing stages of at least precalendering (12) and coating (13). A tail is formed from a paper web and is taken through the finishing stages (12, 13) and then spread to the full width. Prior to starting the tail threading procedure of the following finishing stage (12, 13) this finishing stage (12, 13) is set to the production settings while the paper web is spread in its full width. The invention also relates to an arrangement in the on-line finishing of the paper machine.Type: ApplicationFiled: November 3, 2003Publication date: December 22, 2005Inventors: Vesa Ahvenniemi, Jorma Kinnunen
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Publication number: 20050205225Abstract: A web is threaded in the reeling of a paper or board web, by passing a web tail strip (W) into a reeling nip between a reeling drum (10) and a reel spool (12), on which a web roll is formed. The tail strip (W) is passed into the reeling nip by a suction zone (20) which extends substantially around the entire reeling drum circumference and is (10) in an area where a full-width web runs during reeling, so that the tail strip (w) can be conducted directly along the suction zone (20). The suction zone (20) is placed in the longitudinal direction of the reeling drum (10), i.e. in the width direction of the web.Type: ApplicationFiled: August 7, 2003Publication date: September 22, 2005Inventors: Vesa Ahvenniemi, Kenneth Widell, Hannu Kasula, Seppo Laine, Bo Fagerstrom
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Publication number: 20050150926Abstract: A device in a finishing machine for paper is arranged to guide a paper web along a predetermined path. The traction device (2) engages a tail of the web or an auxiliary member (6) for transferring the tail of the web. The device has power transmission of its own by means of which is moves in relation to a guide (1) extending in the machine direction. The traction device moves in relation to the guide by friction contact of one or several drive wheels (3) with the guide (1). The friction contact plane of the guide (1) curves in directions perpendicular thereto in accordance with the travel path of the paper web.Type: ApplicationFiled: April 30, 2003Publication date: July 14, 2005Inventors: Vesa Ahvenniemi, Jorma Kinnunen
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Patent number: 6551562Abstract: Method and apparatus for guiding a web of paper or board or, alternatively, an edge strip sheared therefrom, in a paper machine or finishing equipment, the method being particularly suited for threading the web tail or edge strip through the machine in conjunction with a production shutdown or after a web break. According to the invention, the web (6) or its tail sheared from the web so as to form an edge strip is supported electrically by means of taking surfaces or electrodes (3, 5) disposed on opposite sides of the web (6) to different potentials. Particularly advantageously, the web (6) or the edge strip can be adhered to a roll (16), a belt (7) or a wire by taking said support element to a lower potential and disposing a higher-potential electrode (5) or a number of electrodes to the opposite side of the web.Type: GrantFiled: March 30, 2001Date of Patent: April 22, 2003Assignee: Valmet CorporationInventors: Vesa Ahvenniemi, Jorma Kinnunen, Seppo Luomi, Silvo Mikkonen, Vilho Nissinen
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Patent number: 6482293Abstract: The invention relates to a method in tail threading, in which a lead-in strip, tail (T) separated from the edge of a paper web is guided between two elongated mobile means in a paper web conveying machine and transferred forward between these two means along a given portion in the machine direction of the machine. The mobile means are belts (1, 2) between which the tail is transported. The neutral axes (N) of the belts (1, 2) are substantially on the same level.Type: GrantFiled: January 10, 2000Date of Patent: November 19, 2002Assignee: Metso Paper, Inc.Inventor: Vesa Ahvenniemi
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Patent number: 6413374Abstract: A threading device and a method for threading a tail of a web, wherein, for guiding the path of a tail separated from a full-width web in a paper machine or a paper finishing device, the threading device comprises a suction channel, placed at least partly in a paper machine portion and provided with a reduced pressure for gripping the tail, and transfer means for transferring the suction channel in the portion of the paper machine and simultaneously for releasing the tail to the portion.Type: GrantFiled: May 12, 2000Date of Patent: July 2, 2002Assignee: Metso Paper, Inc.Inventors: Mauri Laurikainen, Pauli Kytönen, Harri Kuosa, Pekka Koivukunnas, Markku Kyytsönen, Jorma Kinnunen, Vesa Ahvenniemi
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Patent number: 5651832Abstract: A method and apparatus for cleaning the surface of a backing roll in a coater or a calender roll. The roll is cleaned by injecting steam from a steam injection chamber against the roll surface at a 15.degree. angle counter to the rotational direction of the roll. Steam impinging on the surface performs effective removal of accumulated dirt and the detached dirt is carried away on the web without a deleterious effect on the quality of the web. Steam injected against the roll is vacuumed away from the roll surface via a suction chamber, whereby the cleaning steam is prevented from escaping to the surroundings.Type: GrantFiled: August 7, 1996Date of Patent: July 29, 1997Assignee: Valmet CorporationInventors: Vesa Ahvenniemi, Teuvo Lappalainen
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Patent number: 5519945Abstract: A method and apparatus for cleaning the surface of a backing roll in a coater or a calender roll. The roll is cleaned by injecting steam from a steam injection chamber against the roll surface at a 15.degree. angle counter to the rotational direction of the roll. Steam impinging on the surface performs effective removal of accumulated dirt and the detached dirt is carried away on the web without a deleterious effect on the quality of the web. Steam injected against the roll is vacuumed away from the roll surface via a suction chamber, whereby the cleaning steam is prevented from escaping to the surroundings.Type: GrantFiled: April 10, 1995Date of Patent: May 28, 1996Assignee: Valmet CorporationInventors: Vesa Ahvenniemi, Teuvo Lappalainen