Patents by Inventor Jorma Snellman
Jorma Snellman 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: 6873353Abstract: The object of the invention is a method for synchronizing image data obtained from process monitoring cameras. By utilizing synchronization, one and the same area in a paper web can be sought as it passed the different camera positions. Since the speed are high and the webs somewhat stretching, synchronization does not often directly result in the same area being shown in the different camera positions. To facilitate search, a selection area corresponding to the limited number of sequential images in the environment of the point of synchronization of each camera position is visualized for the operator, inside which area the corresponding area in the web can be found with certainty.Type: GrantFiled: February 29, 2000Date of Patent: March 29, 2005Assignee: Honeywell OyInventors: Mika Valkonen, Juha Toivonen, Jorma Snellman
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Patent number: 6809756Abstract: The invention relates to a method for monitoring a process. The image information received from cameras monitoring various positions of the process is stored in digital form and various cameras positions are alternately selected for a display and analysis on the screen of a computer. The screen is also used for displaying an image variation graph representing the image variation data of images preceding and following the image to be analyzed. The system includes selector elements (5) for selecting a camera position representing the highest-level image variation for an automated display.Type: GrantFiled: January 21, 2000Date of Patent: October 26, 2004Assignee: Honeywell OyInventors: Mika Valkonen, Jorma Snellman, Juha Toivonen
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Patent number: 6783485Abstract: A roll for a paper or board machine is produced by forming a tubular roll blank by bending out of a planar sheet or by means of centrifugal casting. The roll blank is first coated with a material having a modulus of elasticity and a density lower than those of steel and the coated roll blank is turned on a lathe to a desired shape and to a desired surface quality.Type: GrantFiled: August 20, 2003Date of Patent: August 31, 2004Assignee: Metso Paper, Inc.Inventors: Eero Savolainen, Jorma Snellman
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Publication number: 20040038788Abstract: A roll for a paper or board machine is produced by forming a tubular roll blank by bending out of a planar sheet or by means of centrifugal casting. The roll blank is first coated with a material having a modulus of elasticity and a density lower than those of steel and the coated roll blank is turned on a lathe to a desired shape and to a desired surface quality.Type: ApplicationFiled: August 20, 2003Publication date: February 26, 2004Inventors: Eero Savolainen, Jorma Snellman
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Patent number: 6692421Abstract: The present invention relates to an end packing (20, 40, 60, 70, 80) for a deflection compensated roll. The roll including a stationary shaft (1) and a roll shell (2), bearing-mounted rotatably therearound and having each end thereof provided with a shaft-enclosing annular end cap (3). The end cap (3) has its surface internal in the axial direction of the roll or its surface external in the axial direction formed with a sealing surface (10, 50, 61, 71, 81). The end packing elements (20, 40, 60, 70, 80) are provided with an annular packing member (12; 42; 62; 72; 82) extending around the shaft (2) and including a front face, which is directed towards said sealing surface (10, 50, 61, 71, 81) and which is in contact with the sealing surface (10, 50) or separated from the sealing surface (61, 71, 81) by a gap constituting an axially directed narrow slot.Type: GrantFiled: January 23, 2002Date of Patent: February 17, 2004Assignee: Metso Paper, Inc.Inventors: Antti Tavi, Ari Lehto, Kari Holopainen, Markku Arvonen, Mika Lämsä, Juhani Niskanen, Jorma Snellman, Jouni Pakkanen, Jori Onnela
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Patent number: 6679819Abstract: The invention relates to a slide shoe assembly for a roll (1) in a paper/board machine or a finishing machine, said roll (1) comprising a stationary axle (4), around which is rotatably mounted a cylindrical roll shell (2), a clearance (5) formed between the axle (4) and an inner surface (3) oF the roll shell (2) being fitted with loading elements (11) operated by a pressurized hydraulic fluid and provided with slide shoes (10, 110) which are loadable against the inner surface (3) of the roll shell (2) for controlling the distribution of a nip pressure in a nip (N) established with a counter roll (9). According to the invention, the loading element is equipped with means capable of eliminating or compensating for a nip-load induced deflection of the roll shell and/or a deflection of the slide shoe caused by the pressure of a hydraulic medium, thereby eliminating the harmful effects caused by said deflections on an oil film between the loading shoe and a cylindrical surface supported thereby.Type: GrantFiled: September 10, 2001Date of Patent: January 20, 2004Assignee: Metso Paper, Inc.Inventors: Kari Holopainen, Pekka Kivioja, Jorma Snellman, Aki Mikkola
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Patent number: 6671958Abstract: A roll for a paper or board machine is produced by forming a tubular roll blank by bending out of a planar sheet or by means of centrifugal casting. The roll blank is first coated with a material having a modulus of elasticity and a density lower than those of steel and the coated roll blank is turned on a lathe to a desired shape and to a desired surface quality.Type: GrantFiled: September 27, 2001Date of Patent: January 6, 2004Assignee: Metso Paper, Inc.Inventors: Eero Savolainen, Jorma Snellman
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Patent number: 6605189Abstract: Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs.Type: GrantFiled: September 7, 2001Date of Patent: August 12, 2003Assignee: Metso Paper, Inc.Inventors: Jorma Snellman, Antti Poikolainen, Ari Puurtinen, Samppa Salminen
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Patent number: 6592503Abstract: A roll has a continuous tubular roll shell (11) of a composite material and axle journals (12) rotating together with the roll shell and joined to each end of the roll shell. The axle journals are supported on a supporting element (13) surrounding the axle journal (12) by at least two bearing elements (14, 15) located at a distance from each other in the axial direction (X—X) of the roll, which supporting element (13) for its part is supported on the machine frame structures (R). The first bearing element (14, 15) is supported on the supporting element (13) through a bending mechanism (20, 21), which is used for applying to the first bearing element (14, 15) a force affecting in a radial direction in order to deflect the first bearing element (14, 15) in relation to the central axis (X—X) of the unbent roll, whereby the axle journal (12) will bend in relation to a pivot point which is formed at the second bearing element (14, 15) and a bending moment is applied to the roll shell (11).Type: GrantFiled: March 9, 2001Date of Patent: July 15, 2003Assignee: Metso Paper, Inc.Inventors: Juha Isometsä, Tuomo Kurkela, Jorma Snellman
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Patent number: 6524227Abstract: A roll that can be bent for a web-like material, which roll comprises a continuous tubular roll mantle (11) of composite material as well as axle journals (12) connected to each end of the roll mantle (11). The axle journals (12) are attached by means of at least one mechanism (30), by whose means the axle journals (12) and thereby the roll mantle (11) are bent into an arc form, and a regulation device (40) by whose means the angular position of the roll arc can be regulated.Type: GrantFiled: May 22, 2000Date of Patent: February 25, 2003Assignee: Metso Paper, Inc.Inventors: Juha Isometsä, Tuomo Kurkela, Jorma Snellman, Pekka Kivioja, Mauri Rukajärvi, Esa Vilmusenaho
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Patent number: 6463170Abstract: The invention relates to a monitoring system for web breaks in a paper machine. A web (W) is monitored by means of a number of cameras (1) and the image data of various camera positions is used for compiling focused image regions (12). Camera-specific image processing equipment (2, 12) is adapted to compile image change data by comparing the change between sequential images as far as the focused image region (12) is concerned. The image change data is compared with a normal level of image change and an alarm message (3a) is delivered if the image change level has a deviation from the reference level which exceeds a preset threshold value. A break alarm is set off, in case said alarm message (3a) is delivered by image change data comparators (3) of one or more pre-selected camera positions (P1-Pn).Type: GrantFiled: April 12, 1999Date of Patent: October 8, 2002Assignee: Honeywell OyInventors: Juha Toivonen, Jorma Snellman, Mika Valkonen
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Publication number: 20020115542Abstract: The present invention relates to an end packing (20, 40, 60, 70, 80) for a deflection compensated roll. The roll including a stationary shaft (1) and a roll shell (2), bearing-mounted rotatably therearound and having each end thereof provided with a shaft-enclosing annular end cap (3). The end cap (3) has its surface internal in the axial direction of the roll or its surface external in the axial direction formed with a sealing surface (10, 50, 61, 71, 81). The end packing elements (20, 40, 60, 70, 80) are provided with an annular packing member (12; 42; 62; 72; 82) extending around the shaft (2) and including a front face, which is directed towards said sealing surface (10, 50, 61, 71, 81) and which is in contact with the sealing surface (10, 50) or separated from the sealing surface (61, 71, 81) by a gap constituting an axially directed narrow slot.Type: ApplicationFiled: January 23, 2002Publication date: August 22, 2002Inventors: Antti Tavi, Ari Lehto, Kari Holopainen, Markku Arvonen, Mika Lamsa, Juhani Niskanen, Jorma Snellman, Jouni Pakkanen, Jori Onnela
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Publication number: 20020088895Abstract: A roll for a paper or board machine is produced by forming a tubular roll blank by bending out of a planar sheet or by means of centrifugal casting. The roll blank is first coated with a material having a modulus of elasticity and a density lower than those of steel and the coated roll blank is turned on a lathe to a desired shape and to a desired surface quality.Type: ApplicationFiled: September 27, 2001Publication date: July 11, 2002Inventors: Eero Savolainen, Jorma Snellman
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Patent number: 6395137Abstract: The invention concerns a seal construction for a suction roll in a paper machine. The seal construction (10) comprises a substantially U-section holder (12) open towards the inner face (3) of the roll mantle, a seal which is mounted in the holder, which is placed in the axial direction of the roll, and which consists of a frame part (13) of the seal fitted in the holder (12) and of a wear part (11), which is fix to the frame part and which is placed against the inner face (3) of the roll mantle, and which seal construction also comprises loading means, such as a loading hose (15) or equivalent, by whose means the seal can be shifted in the holder (12) against the inner face (3) of the roll mantle.Type: GrantFiled: July 10, 2000Date of Patent: May 28, 2002Assignee: Valmet CorporationInventor: Jorma Snellman
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Publication number: 20020060054Abstract: Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs.Type: ApplicationFiled: September 7, 2001Publication date: May 23, 2002Inventors: Jorma Snellman, Antti Poikolainen, Ari Puurtinen, Samppa Salminen
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Patent number: 6387219Abstract: An extended-nip press device comprises a press shoe extending in a cross-machine direction and a support for supporting the press shoe. Between the shoe and the support are arranged a plurality of loading cylinders for moving the shoe toward a backing member such as a counter roll to apply pressure to a fibrous web passing through the nip between the shoe and counter roll. Each loading cylinder comprises a first cylinder member fixed on the shoe and a second cylinder member fixed on the support, and a connecting member that slidably engages both cylinder members. The connecting member can slide relative to the first cylinder member with a first stroke length L1 that is smaller than the stroke length L2 between the connecting member and the second cylinder member. Accordingly, the connecting member can remain essentially aligned along the lengthening direction of the loading cylinder.Type: GrantFiled: December 11, 2000Date of Patent: May 14, 2002Assignee: Metso Paper, Inc.Inventor: Jorma Snellman
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Patent number: 6370953Abstract: A method and apparatus is disclosed for balancing a cylinder, roll, or equivalent part, with a thin mantle, by which deviations in the circumferential deflection line of the mantle can be compensated in order to correct for dynamic runout. Errors in the circumferential deflection line are measured and dynamic runout is determined. Locations and magnitudes of any counterweights necessary for balancing are determined based on deformations and dynamic runout arising from deviations in the deflection line of the mantle. Counterweights are fixed to the inner face of the mantle of the cylinder, roll or equivalent part at positions determined from measurements.Type: GrantFiled: October 1, 1999Date of Patent: April 16, 2002Assignee: Valmet CorporationInventors: Matti Ahokas, Auvo Saari, Eero Kalapudas, Jorma Snellman
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Patent number: 6355143Abstract: A shoe press unit comprises a support beam, a shoe element movably supported on the beam, a pressing unit arranged between the beam and the shoe element for urging the shoe element away from the beam and toward a counter element, and a flexible belt that is arranged to slide over the pressing surface of the shoe element. An oil evacuation arrangement formed separately from the shoe element is affixed to the shoe element proximate an upstream edge region thereof. The oil evacuation arrangement has an inlet opening located such that a major portion of the excess oil expelled from between the belt and the shoe element passes through the inlet opening with a kinetic energy that is substantially undiminished from the initial kinetic energy of the oil as it exits from between the belt and the pressing surface of the shoe element.Type: GrantFiled: November 27, 2000Date of Patent: March 12, 2002Assignee: Valmet-Karlstad ABInventors: Malin Kilian, Lars Gustavsson, Jonas Eriksson, Jorma Snellman, Antti Ilmarinen, Erik Brox, Christer Malmros
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Patent number: 6322668Abstract: A suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs. A method in a suction box in a paper machine, wherein a vacuum is formed in a vacuum chamber of the suction box and, during formation of the vacuum, the deck and/or the ribs is/are pressed against the wire.Type: GrantFiled: December 26, 1997Date of Patent: November 27, 2001Assignee: Valmet CorporationInventors: Jorma Snellman, Antti Poikolainen, Ari Puurtinen, Samppa Salminen
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Patent number: 6306262Abstract: Suction box in a paper machine including a vacuum chamber, a deck or a number of substantially U-section holders open toward a wire and ribs arranged in the deck or the holders so that they can be loaded against the wire. At least in a running situation, the deck of the suction box is curved or the ribs are arranged to provide a curve run of the wire so that the wire tension of the curved run over the deck or ribs serves to lower a normal force which is produced by the vacuum present in the suction box and which is effective between the wire and the deck or ribs.Type: GrantFiled: May 21, 1999Date of Patent: October 23, 2001Assignee: Valmet CorporationInventors: Jorma Snellman, Antti Poikolainen, Ari Puurtinen, Samppa Salminen