Patents by Inventor Ilkka Rata
Ilkka Rata 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: 7618518Abstract: A composite doctor arrangement for a web forming machine or web handling machine has a beam structure (10) with a mounting piece (13) fitted to it. A blade holder (11) is fitted to the mounting piece, with a blade (12) fitted to the blade holder (11). The mounting piece (13) is fitted axially and movably in the beam structure (10) by a form-locked mounting counterpiece (14), where the form locking is arranged so that it is fixed in the lateral direction of the blade (12) and essentially free in the longitudinal direction of the blade (12).Type: GrantFiled: June 8, 2006Date of Patent: November 17, 2009Assignee: Metso Paper, Inc.Inventors: Ilkka Rata, Kalle Vaaraniemi
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Patent number: 7559883Abstract: A beam structure for a paper, board or finishing machine is suited for use in all applications where, for instance, a doctor or a coating device or a measuring device needs to be supported on a cross-directional beam of a paper or board machine. The beam (50) has an inner and outer shell (52, 54) which are situated inside each other and which are supported to each other over some of their length, and that one shell is supported stationarily by its ends to the frame structures (62) of the said paper, board or finishing machine, and that one shell deflects when the beam is loaded while the other shell remains essentially straight.Type: GrantFiled: October 25, 2005Date of Patent: July 14, 2009Assignee: Metso Paper, Inc.Inventors: Ilkka Rata, Matti Pajala
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Patent number: 7264692Abstract: The operation of a doctor assembly (16) in a paper machine is monitored. In case of a malfunction, the paper machine's (10) control devices (14-14?, 15) are used to carry out the necessary measures for eliminating the malfunction and carrying out repair and/or protective measures. In addition, detector devices (20) are arranged in connection with the doctor assembly (16), to detect a malfunction. The detector devices (20) are connected to the control devices (14, 14?, 15) of the paper machine (10), in order to carry out the said measures automatically. The invention also relates to doctor assemblies in a paper machine for implementing the method.Type: GrantFiled: April 10, 2002Date of Patent: September 4, 2007Assignee: Metso Paper, Inc.Inventors: Juha Isometsä, Tuomo Juvakka, Seppo Parviainen, Ilkka Rata, Mika Saari, Juhani Vestola
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Publication number: 20060289141Abstract: A composite doctor arrangement for a web forming machine or web handling machine has a beam structure (10) with a mounting piece (13) fitted to it. A blade holder (11) is fitted to the mounting piece, with a blade (12) fitted to the blade holder (11). The mounting piece (13) is fitted axially and movably in the beam structure (10) by a form-locked mounting counterpiece (14), where the form locking is arranged so that it is fixed in the lateral direction of the blade (12) and essentially free in the longitudinal direction of the blade (12).Type: ApplicationFiled: June 8, 2006Publication date: December 28, 2006Inventors: Ilkka Rata, Kalle Vaaraniemi
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Patent number: 7108766Abstract: A doctor unit in a paper machine includes a blade carrier having a blade holder fitted to the blade carrier. A doctor blade is mountable in the blade holder to doctor a roll or similar moving surface. The blade holder and/or doctor blade include one or more sensors installed inside the construction or on its surface. The sensors are arranged to measure the wear of and/or stress in the blade holder and/or doctor blade.Type: GrantFiled: September 12, 2000Date of Patent: September 19, 2006Assignee: Metso Paper, Inc.Inventors: Ilkka Eskelinen, Ilkka Rata, Harri Ruotsalainen, Jukka Samppala, Heikki Toivanen, Juhani Vestola
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Publication number: 20060180291Abstract: A composite-construction treatment equipment has a frame (12) with a connected blade holder (15) made of a composite material. The blade holder (15) has a blade (16) and a separate backing blade (18). The blade holder (15) is removably adapted to the frame (12) using a pair of form-locking counter clamps (19). The form-lock is arranged tight in the lateral direction of the blade (16) and essentially free in the axial direction of the blade (16).Type: ApplicationFiled: January 27, 2004Publication date: August 17, 2006Inventor: Ilkka Rata
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Publication number: 20060085938Abstract: A beam structure for a paper, board or finishing machine is suited for use in all applications where, for instance, a doctor or a coating device or a measuring device needs to be supported on a cross-directional beam of a paper or board machine. The beam (50) has an inner and outer shell (52, 54) which are situated inside each other and which are supported to each other over some of their length, and that one shell is supported stationarily by its ends to the frame structures (62) of the said paper, board or finishing machine, and that one shell deflects when the beam is loaded while the other shell remains essentially straight.Type: ApplicationFiled: October 25, 2005Publication date: April 27, 2006Inventors: Ilkka Rata, Matti Pajala
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Patent number: 7033459Abstract: An arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine includes a doctor set in connection with a surface with a doctor blade fitted in it for doctoring the surface. The doctor blade is at least partly of a material, the hardness of which is essentially equal to or less than the hardness of the material of the surface, in order to prevent the doctor blade from cutting into the surface. The material is arranged to form a layer extending over the entire width of the doctor blade, and the thickness of which throughout is at least half of the thickness of the doctor blade. A support construction is arranged in the doctor blade, which together with the layer is arranged to form the doctor blade.Type: GrantFiled: June 12, 2002Date of Patent: April 25, 2006Assignee: Metso Paper, Inc.Inventors: Ilkka Rata, Juhani Vestola
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Patent number: 6991757Abstract: A caring doctor blade for a paper/board machine having layers of fiberglass and carbon fibers, and a caring layer as a rigid laminated structure, where the caring layer has carbon fibers and grinding particles in direct proximity to the carbon fibers. The orientation of the fiberglass layers is parallel to the longitudinal axis of the blade. At least some of the layers that contain carbon fibers. The orientation of the carbon fibers is substantially diverging from the direction of the longitudinal axis of the blade. A method for manufacturing the doctor blade for a paper/board machine by a pultrusion method is also disclosed.Type: GrantFiled: July 9, 2002Date of Patent: January 31, 2006Assignee: Metso Paper, Inc.Inventors: Ilkka Rata, Juhani Vestola
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Publication number: 20050098289Abstract: In a paper or paperboard machine measurements are conducted with at least one measurement means attached to an element in the paper or paperboard machine. The measurement means has two surfaces made of electrically conductive material and has insulating material between them. The change in the capacitance between the surfaces made of conductive material is measured.Type: ApplicationFiled: October 1, 2004Publication date: May 12, 2005Inventors: Tatu Pitkanen, Topi Tynkkynen, Ilkka Rata, Heikki Seppa, Matti Innala, Petteri Lannes, Risto Kauhanen
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Publication number: 20040237884Abstract: A treatment equipment, which is intended to be installed in connection with a moving surface. The treatment equipment includes a frame and a blade holder formed from composite material as a single piece and connected to the frame. In addition, a blade is fitted to the blade holder, the bevelled edge belonging to which is arranged to be brought into contact with the moving surface by moving the blade holder. In the blade holder, there is also a separate backing blade, which is fitted at one edge into the blade holder, the other edge extending closer than the blade holder to the said bevelled edge.Type: ApplicationFiled: July 8, 2004Publication date: December 2, 2004Applicant: Metso Paper. Inc.Inventors: Ilkka Rata, Reijo Hassinen
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Patent number: 6820316Abstract: A composite blade, in which there is an essentially plate-like blade component with a composite-construction and retention members arranged in its rear part is intended to be installed in a special blade holder with the retention members remaining in the throat of the blade holder. The retention members are formed of a profiling arranged as a lateral extension of the blade component. The profiling extends essentially over the entire length of the blade and is of the same piece as the blade component.Type: GrantFiled: February 5, 2001Date of Patent: November 23, 2004Assignee: Metso Paper, Inc.Inventor: Ilkka Rata
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Publication number: 20040163587Abstract: A treatment equipment, which is intended to be installed in connection with a moving surface. The treatment equipment includes a frame and a blade holder formed from composite material as a single piece and connected to the frame. In addition, a blade is fitted to the blade holder, the bevelled edge belonging to which is arranged to be brought into contact with the moving surface by moving the blade holder. In the blade holder, there is also a separate backing blade, which is fitted at one edge into the blade holder, the other edge extending closer than the blade holder to the said bevelled edge.Type: ApplicationFiled: February 20, 2003Publication date: August 26, 2004Applicant: Metso Paper, Inc.Inventor: Ilkka Rata
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Patent number: 6758944Abstract: A doctor blade for use in cleaning a roll in a paper machine comprises a thermosetting plastic polymer material selected from the group consisting of vinylesterurethanes and polyether amides.Type: GrantFiled: March 9, 2001Date of Patent: July 6, 2004Assignee: Metso Paper, Inc.Inventors: Jouni Kirjava, Ilkka Rata, Tommi Vainio
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Publication number: 20040123965Abstract: The invention relates to a method for monitoring the operation of a doctor assembly in a paper machine. In the method, the operation of the doctor assembly (16) is monitored. In case of a malfunction, the paper machine's (10) control devices (14-14′, 15) are used to carry out the necessary measures for eliminating the malfunction and carrying out repair and/or protective measures. In addition, detector devices (20) are arranged in connection with the doctor assembly (16), to detect a malfunction. The detector devices (20) are connected to the control devices (14-14′, 15) of the paper machine (10), in order to carry out the said measures automatically. The invention also relates to doctor assemblies in a paper machine for implementing the method.Type: ApplicationFiled: February 19, 2004Publication date: July 1, 2004Inventors: Juha Isometsa, Tuomo Juvakka, Seppo Parviainen, Ilkka Rata, Mika Saari, Juhani Vestola
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Patent number: 6687950Abstract: The invention relates to an apparatus comprising a holder (2) for a doctor blade and a blade (1) to be fitted in the holder for use in a paper or board machine. The holder (2) and/or the blade (1) comprises a composite material of whose surface or on a part of whose surface a ceramic coating (6) has been made.Type: GrantFiled: December 8, 2000Date of Patent: February 10, 2004Assignee: Metso Paper, Inc.Inventors: Ilkka Rata, Kari Niemi, Heikki Toivanen, Timo Lintula, Ilkka Eskelinen
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Patent number: 6682012Abstract: A reeling device (10), has a support base (1), a support arm (2), and a shaft (9′) mounted on the support arm (2). One shaft end has a boss (9) and the other end has a revolving frame (7). Mounted to the device is a transit case (20), within which the used doctor blades (12) of a paper/cardboard machine are reeled on a roll. Raw material is supplied to a blade production plant, where the blades are produced, then transported to a paper/cardboard plant and stored in the plant prior to being mounted in connection with paper/cardboard machine rolls, where their condition is monitored during use. Used doctor blades are removed from the machine, packed in storable form with the reeling device, and are stored in the paper/cardboard plant. The packed used blades are transported away from the paper/cardboard plant and delivered into recycling, reuse or end use.Type: GrantFiled: April 22, 2002Date of Patent: January 27, 2004Assignee: Metso Paper, Inc.Inventors: Seppo Parviainen, Mika Häkkinen, Sami Kuparinen, Ilkka Eskelinen, Ilkka Rata, Harri Ruotsalainen, Heikki Toivanen
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Patent number: 6547932Abstract: The invention relates to a doctor apparatus (10) in connection with a roll (T) in a paper or board machine. The doctor apparatus (10) comprises a doctor beam (12) of lightweight construction and that the doctor beam (12) is arranged to pivot on bearing means (13a1, 13a2 . . . ) (pivot movement arrow L1). In connection with the doctor beam there are loading members (14a1, 14a2), a relative linear movement taking place between the loading members (14a1, 14a2) and backup surfaces (12′, 15a′) when the doctor beam (12) is being oscillated.Type: GrantFiled: January 16, 2002Date of Patent: April 15, 2003Assignee: Metso Paper, Inc.Inventors: Antti Leinonen, Jouni Heiskanen, Kari Paloniemi, Kari Lamminmäki, Ilkka Rata, Ilkka Eskelinen, Samppa J. Salminen, Aimo Närväinen, Pentti Luoma, Jukka Samppala, Mika Saari, Reijo Hassinen
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Publication number: 20020189777Abstract: An arrangement for doctoring a belt or a soft roll surfacing in a paper or board machine includes a doctor set in connection with a surface with a doctor blade fitted in it for doctoring the surface. The doctor blade is at least partly of a material, the hardness of which is essentially equal to or less than the hardness of the material of the surface, in order to prevent the doctor blade from cutting into the surface. The material is arranged to form a layer extending over the entire width of the doctor blade, and the thickness of which throughout is at least half of the thickness of the doctor blade. A support construction is arranged in the doctor blade, which together with the layer is arranged to form the doctor blade.Type: ApplicationFiled: June 12, 2002Publication date: December 19, 2002Applicant: Metso Paper, Inc.Inventors: Ilkka Rata, Juhani Vestola
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Publication number: 20020176934Abstract: A caring doctor blade for a paper/board machine having layers of fiberglass and carbon fibers, and a caring layer as a rigid laminated structure, where the caring layer has carbon fibers and grinding particles in direct proximity to the carbon fibers. The orientation of the fiberglass layers is parallel to the longitudinal axis of the blade. At least some of the layers that contain carbon fibers. The orientation of the carbon fibers is substantially diverging from the direction of the longitudinal axis of the blade. A method for manufacturing the doctor blade for a paper/board machine by a pultrusion method is also disclosed.Type: ApplicationFiled: July 9, 2002Publication date: November 28, 2002Applicant: METSO PAPER, INC.Inventors: Ilkka Rata, Juhani Vestola