Patents by Inventor Heikki Kettunen
Heikki Kettunen 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: 11339536Abstract: The invention relates to a roll for use in a manufacture of a fibrous web, which comprises cellulosic fibers. The roll comprises a roll body with a cylindrical surface, and a roll cover, which is arranged to cover the cylindrical surface of the roll body. The cover has a functional layer, which has a polymer matrix and reinforcing material in the form of functional particles and/or functional fibers embedded in the polymer matrix. The functional particles and/or functional fibers has nanocellulose material. The invention relates also to the use of the roll.Type: GrantFiled: March 1, 2019Date of Patent: May 24, 2022Assignee: Valmet Technologies OyInventors: Jani Turunen, Marko Kovanen, Heikki Kettunen
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Patent number: 11008190Abstract: A method for monitoring a machine element in a paper finishing machine (10). The machine element mounted for rotation machine elements (16-19) equipped with a sensor assembly (24) measuring force or pressure, and a counter-pair (15, 20, 33, 44) for said machine element. The machine element is made to rotate against the counter-pair, a measurement signal (25) is generated between the machine element and the counter-pair with the sensor assembly, and recording a reference cross-directional profile (21) of force or pressure generated. Condition monitoring (38) of vibration with the reference profile is by comparison of current signals with the reference so as to detect periodic variation (39.1, 39.2) in the cross-directional pressure profile, and producing visual information (37) from the analysis for monitoring. The invention also relates to a corresponding system, a rotating machine element for the method or the system, and a computer program product.Type: GrantFiled: February 24, 2017Date of Patent: May 18, 2021Assignee: VALMET TECHNOLOGIES OYInventors: Tatu Pitkänen, Heikki Kettunen, Todd Vandenheuvel
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Publication number: 20200407917Abstract: The invention relates to a roll for use in a manufacture of a fibrous web, which comprises cellulosic fibers. The roll comprises a roll body with a cylindrical surface, and a roll cover, which is arranged to cover the cylindrical surface of the roll body. The cover has a functional layer, which has a polymer matrix and reinforcing material in the form of functional particles and/or functional fibers embedded in the polymer matrix. The functional particles and/or functional fibers has nanocellulose material. The invention relates also to the use of the roll.Type: ApplicationFiled: March 1, 2018Publication date: December 31, 2020Applicant: Valmet Technologies OyInventors: Jani TURUNEN, Marko KOVANEN, Heikki KETTUNEN
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Patent number: 10662584Abstract: The invention relates to a method for monitoring the condition of a continuous element (44) moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (41), which is equipped with a sensor assembly (24) that measures force or pressure and against which the continuous element moves. In the method, the machine element is made to rotate against the continuous element, a measurement signal (25) is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile (21) of force or pressure generated between the machine element and the continuous element is formed from the measurement signal. Said moving continuous element is a fabric (32, 33) installed in a fabric run (22, 23) traveling via the machine element.Type: GrantFiled: February 24, 2017Date of Patent: May 26, 2020Assignee: Valmet Technologies OyInventors: Heikki Kettunen, Gerald Kramer, Tatu Pitkänen, James Sipprell, Todd Vandenheuvel
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Publication number: 20190368946Abstract: A method for the monitoring and control of the operating conditions of a fiber web machine or paper finishing machine, where the monitoring and control are performed on a rotatable machine element (41) equipped with a sensor assembly (24) that measures temperature, and generates a measurement signal (25), and a cross-directional temperature profile (21) of the machine element is generated from the measurement signal. One or more reference profiles (35) are generated for the cross-directional temperature profile of the machine element. The cross-directional temperature profile of the machine element generated from the measurement signal and at least one reference profile generated for it are compared to find a change concerning the operating conditions of the fiber web machine or paper finishing machine, and actions are performed on the basis of said change. The invention also relates to a corresponding system, a rotating machine element and a computer program product.Type: ApplicationFiled: June 4, 2019Publication date: December 5, 2019Applicant: Valmet Technologies OyInventors: Tatu Pitkänen, Joe Cook, Heikki Kettunen, Gregory Vande Corput
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Publication number: 20190055102Abstract: A method for monitoring a machine element in a paper finishing machine (10). The machine element mounted for rotation machine elements (16-19) equipped with a sensor assembly (24) measuring force or pressure, and a counter-pair (15, 20, 33, 44) for said machine element. The machine element is made to rotate against the counter-pair, a measurement signal (25) is generated between the machine element and the counter-pair with the sensor assembly, and recording a reference cross-directional profile (21) of force or pressure generated. Condition monitoring (38) of vibration with the reference profile is by comparison of current signals with the reference so as to detect periodic variation (39.1, 39.2) in the cross-directional pressure profile, and producing visual information (37) from the analysis for monitoring. The invention also relates to a corresponding system, a rotating machine element for the method or the system, and a computer program product.Type: ApplicationFiled: February 24, 2017Publication date: February 21, 2019Applicant: Valmet Technologies OyInventors: Tatu Pitkänen, Heikki Kettunen, Todd Vandenheuvel
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Publication number: 20190048526Abstract: The invention relates to a method for monitoring the condition of a continuous element (44) moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (41), which is equipped with a sensor assembly (24) that measures force or pressure and against which the continuous element moves. In the method, the machine element is made to rotate against the continuous element, a measurement signal (25) is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile (21) of force or pressure generated between the machine element and the continuous element is formed from the measurement signal. Said moving continuous element is a fabric (32, 33) installed in a fabric run (22, 23) traveling via the machine element.Type: ApplicationFiled: February 24, 2017Publication date: February 14, 2019Applicant: Valmet Technologies OyInventors: Heikki Kettunen, Gerald Kramer, Tatu Pitkänen, James Sipprell, Todd Vandenheuvel
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Patent number: 10087028Abstract: A perforated roll (10) of a fiber web machine includes a roll shell (19), holes (13) extending through the roll shell, and a sensing system (14) arranged in the roll shell. The sensing system (14) includes at least one pair of leads (16), to which one or more sensors (15) have been connected. At least one pair of leads is composed of flat leads (17.2, 17.2), which are arranged in the roll shell side by side. A prefabricated sensor sheet (26) may be prepared for a perforated roll of a fiber web machine, such that holes may be drilled therethrough to communicate with the roll shell holes (13).Type: GrantFiled: June 2, 2016Date of Patent: October 2, 2018Assignee: VALMET TECHNOLOGIES, INC.Inventors: Kari Röyskö, Heikki Kettunen, Tatu Pitkänen
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Publication number: 20160355362Abstract: A perforated roll (10) of a fiber web machine includes a roll shell (19), holes (13) extending through the roll shell, and a sensing system (14) arranged in the roll shell. The sensing system (14) includes at least one pair of leads (16), to which one or more sensors (15) have been connected. At least one pair of leads is composed of flat leads (17.2, 17.2), which are arranged in the roll shell side by side. A prefabricated sensor sheet (26) may be prepared for a perforated roll of a fiber web machine, such that holes may be drilled therethrough to communicate with the roll shell holes (13).Type: ApplicationFiled: June 2, 2016Publication date: December 8, 2016Applicant: Valmet Technologies, Inc.Inventors: Kari Röyskö, Heikki Kettunen, Tatu Pitkänen
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Patent number: 8444821Abstract: Optical radiation sources functioning on different optical bands radiate on different optical bands and focus optical radiation on a region in a web surface as pulses in such a manner that illumination areas of the pulses overlap on the plane of the web. At most one optical radiation band is focused on the web from the direction of the normal. The spatial intensity distribution of at least one optical band differs from the uniform distribution and the intensity distributions of at least two different optical bands differ from one another in a predetermined manner. A camera forms still images of the web surface region on each optical radiation band. An image-processing unit determines the surface topography of the web on the basis of the images. In addition, a controller may control the paper manufacturing process on the basis of the determined surface topography.Type: GrantFiled: December 30, 2008Date of Patent: May 21, 2013Assignee: Metso Automation OyInventors: Marko Avikainen, Petri Niemi, Heikki Kettunen, Markku Mäntylä, Heimo Keränen
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Publication number: 20110264254Abstract: A method and apparatus are set forth for controlling an actuator in a moving web manufacturing process, comprising measuring a plurality of actuator profiles and in response generating nominal response models thereof; generating a multivariable profile prediction based on the nominal response models; generating a multivariate control target based at least one of the actuator profiles; and adjusting control of the actuator by minimizing error between the multivariate control target and said multivariate profile prediction.Type: ApplicationFiled: June 12, 2008Publication date: October 27, 2011Applicant: METSO AUTOMATION INC.Inventors: Seyhan Nuyan, Calvin Fu, Antti Heikkinen, Heikki Kettunen, Lari Lahdensuu
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Publication number: 20100319866Abstract: Optical radiation sources functioning on different optical bands radiate on different optical bands and focus optical radiation on a region in a web surface as pulses in such a manner that illumination areas of the pulses overlap on the plane of the web. At most one optical radiation band is focused on the web from the direction of the normal. The spatial intensity distribution of at least one optical band differs from the uniform distribution and the intensity distributions of at least two different optical bands differ from one another in a predetermined manner. A camera forms still images of the web surface region on each optical radiation band. An image-processing unit determines the surface topography of the web on the basis of the images. In addition, a controller may control the paper manufacturing process on the basis of the determined surface topography.Type: ApplicationFiled: December 30, 2008Publication date: December 23, 2010Applicant: Metso Automation OYInventors: Marko Avikainen, Petri Niemi, Heikki Kettunen, Markku Mantyla, Heimo Keranen
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Patent number: 7799171Abstract: A method and a system to control a reeling profile of a material web reel (30), when, in the forming of a material web reel (30), a web is reeled around a reeling core and when in an adjustment of CD-directional profiles of the web reel, profiling devices (8) have been applied. For adjusting quality profiles and reeling profiles of the web, profiling devices are managed with the help of profile measurings of the roller nip and/or of the profile measurings of the reel (30), which are obtained from the reel-up (2). A measuring device (40) for a measuring of a CD-directional hardness profile of the fiber web reel includes a measuring head (43), which is connected with a loading means (41, 42), which loads the measuring head against the fiber web reel. The motion course of the measuring head is linear.Type: GrantFiled: July 1, 2005Date of Patent: September 21, 2010Assignee: Metso Paper, Inc.Inventors: Tapio Mäenpää, Jari Tiitta, Petteri Lannes, Rami Vanninen, Tatu Pitkänen, Heikki Kettunen, Matti Innala, John Shakespeare, Toni Heikkilä, Topi Tynkkynen, Teppo Kojo, Risto Mäkinen, Marko Tiilikainen, Matti M. Kemppainen
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Processing device and method of operating the device for processing a coated or uncoated fibrous web
Patent number: 7704351Abstract: A processing device and method applying the same for processing a coated or uncoated fibrous web is provided. The device comprises a belt configured to extend around a guiding element, at least one counter-element being disposed outside said belt to provide a contact area with the belt, such that the belt and the counter-element establish therebetween a web processing zone for passing a web to be processed therethrough. The processing zone length is defined by the disposition of the belt's guiding element and/or by the configuration of the counter-elements. The contact pressure applied to a web in the processing zone is within the range of between about 0.01 MPa and about 200 MPa.Type: GrantFiled: January 29, 2003Date of Patent: April 27, 2010Assignee: Metso Paper, Inc.Inventors: Juha Lipponen, Vilho Nissinen, Pekka Koivukunnas, Mika Viljanmaa, Henri Vaittinen, Reijo Pietikäinen, Kari Hasanen, Risto Sutti, Eero Suomi, Pekka Linnonmaa, Markku Kyytsönen, Matti Tervonen, Heikki Kettunen, Kari Holopainen -
Patent number: 7582189Abstract: The invention relates to a method in the manufacture of a fiber-based web-like product for optimizing the operation of the process being used, in which method quality factors are defined for the product being manufactured control variables, which affect the state of the process, or quality factors of the finished product, are defined for at least part of the process. In addition, an operating model is created, which is used to depict the effect of each control variable on the quality factors, and a user interface is created, through which varying values for the control variables can be input to the operating model and the values of the quality factors can be depicted simultaneously, in such a way that the values of the control variables and the values of the quality factors can be viewed simultaneously.Type: GrantFiled: September 15, 2004Date of Patent: September 1, 2009Assignee: Metso Paper, Inc.Inventors: Pekka Pihola, Heikki Kettunen, Lari Lahdensuu
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Patent number: 7429311Abstract: A method and assembly is disclosed for moistening a web of paper or paperboard, the assembly comprising a steam blow cavity open toward a moving web (1). The steam blow cavity houses spray nozzles (5, 6, 7) at least for injecting steam into the cavity so as to form a steam atmosphere therein. Additionally, the steam blow cavity houses spray nozzles (5, 6, 7) for spraying a mist of a heated liquid onto the web (1) within the thus formed steam atmosphere.Type: GrantFiled: January 8, 2004Date of Patent: September 30, 2008Assignee: Metso Paper, Inc.Inventors: Reijo Pietikäinen, Henri Vaittinen, Heikki Kettunen, Markku Kojo
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Patent number: 7384509Abstract: A method for controlling the moisture profile of a paper web or board web processed in a heated multi-roll calendar to optimize the qualities of the paper or board, especially gloss. The method is characterized in that the moisture measurement is carried out both on either surface of the web and as a through-measurement, and the measurement results thus obtained are specified by a thermodynamic model which calculates the moisture of the web in three layers, and that the results thus obtained are used for controlling the supply of moisture to the web.Type: GrantFiled: February 5, 2003Date of Patent: June 10, 2008Assignee: Metso Paper, Inc.Inventors: Antti Heikkinen, Heikki Kettunen, Hannu Lätti
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Publication number: 20080029234Abstract: A paper web moistening device comprises several moistening nozzles (2) in the cross direction of a paper web for blowing water mist comprising air and water onto the paper web (3) surface. At least one means for removing water 5 mist and/or air from the vicinity of the paper web (3) surface is arranged be-tween the moistening nozzles. This means is arranged closer to the paper web (3) surface than the moistening nozzles (2).Type: ApplicationFiled: July 26, 2005Publication date: February 7, 2008Applicant: Metso Automation OYInventors: Hannu Latti, Heikki Kettunen, Antti Heikkinen, Niko Posti, Jari Almi
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Publication number: 20080017341Abstract: A method and a system to control a reeling profile of a material web reel (30), when, in the forming of a material web reel (30), a web is reeled around a reeling core and when in an adjustment of CD-directional profiles of the web reel, profiling devices (8) have been applied. For adjusting quality profiles and reeling profiles of the web, profiling devices are managed with the help of profile measurings of the roller nip and/or of the profile measurings of the reel (30), which are obtained from the reel-up (2). A measuring device (40) for a measuring of a CD-directional hardness profile of the fiber web reel includes a measuring head (43), which is connected with a loading means (41, 42), which loads the measuring head against the fiber web reel. The motion course of the measuring head is linear.Type: ApplicationFiled: July 1, 2005Publication date: January 24, 2008Applicant: METSO PAPER, INC.Inventors: Tapio Maenpaa, Jari Tiitta, Petteri Lannes, Rami Vanninen, Tatu Pitkanen, Heikki Kettunen, Matti Innala, John Shakespeare, Toni Heikkila, Topi Tynkkynen, Teppo Kojo, Risto Makinen, Marko Tiilikainen, Matti Kemppainen
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Publication number: 20070095494Abstract: The invention relates to a method in the manufacture of a fiber-based web-like product for optimizing the operation of the process being used, in which method quality factors are defined for the product being manufactured control variables, which affect the state of the process, or quality factors of the finished product, are defined for at least part of the process. In addition, an operating model is created, which is used to depict the effect of each control variable on the quality factors, and a user interface is created, through which varying values for the control variables can be input to the operating model and the values of the quality factors can be depicted simultaneously, in such a way that the values of the control variables and the values of the quality factors can be viewed simultaneously.Type: ApplicationFiled: September 15, 2004Publication date: May 3, 2007Inventors: Pekka Pihola, Heikki Kettunen, Lari Lahdensuu