Patents by Inventor Pekka M. Typpo
Pekka M. Typpo 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: 7482590Abstract: A method for determining the quantity of coating applied to a material web includes directing radiation onto the material web coated with the coating, interacting the radiation with the coating, determining, using a measurement signal produced using the detected radiation, the quantity of the coating on and/or in the material web, and detecting the radiation, after its interaction, in various frequency bands to produce a specific measurement signal for each frequency band. The frequency bands include a frequency common to all frequency bands. The frequency bands are selected such that, with any given quantity of the applied coating, at least one of the specific measurement signals varies more with the structure of the applied coating than another of the specific measurement signals. The specific measurement signals of the various frequency bands are mathematically linked with each other to determine the quantity of the coating.Type: GrantFiled: December 20, 2006Date of Patent: January 27, 2009Assignee: Voith Patent GmbHInventors: Thomas Ischdonat, Pekka M. Typpo
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Patent number: 7437208Abstract: A system for the computer-aided measurement of quality and/or process data during the production and/or conversion of a material web, in particular paper or board web, by way of correlation with raw measured data. The raw measured data is present in the form of other quality and process data during the production or conversion process. Measurements of quality parameters in the laboratory may also be incorporated in the raw measured data. The raw measured data is combined to form data sets which in each case are determined simultaneously. Specific laboratory or quality measurements are selected as target data which, by way of at least one soft-sensor algorithm running in a computer-based operation and linking unit, can be calculated from the other data serving as input data, and each data set containing measured data, which relates approximately to the same monitored volume of web and raw material, in particular paper and paper raw material.Type: GrantFiled: September 16, 2004Date of Patent: October 14, 2008Assignee: Voith Patent GmbHInventors: Rudolf Muench, Niels Hardt, Pekka M. Typpo, Florian Wegmann, Herbert Holik
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Publication number: 20080149836Abstract: This invention relates to a method for determining the quantity of a coating applied to a material web, in particular a fibrous web, with which radiation is directed onto the material web coated with the coating and the radiation interacts at least with the coating, and with which at least a fraction of the radiation that has interacted with the coating is detected in order to determine, on the basis of at least one measurement signal produced by way of the detected radiation, the quantity of the coating on and if necessary in the material web.Type: ApplicationFiled: December 20, 2006Publication date: June 26, 2008Inventors: Thomas Ischdonat, Pekka M. Typpo
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Patent number: 6995372Abstract: A material sheet attribute detection system, the material sheet having a first side and a second side, the system includes a radiation source located proximate to the first side of the material sheet, the radiation source emitting radiation toward the material sheet, a radiation detection array located proximate to the second side of the material sheet, the radiation detection array producing at least one signal based on the radiation detected from the radiation source and a processor utilizing the at least one signal to determine a position of the material sheet.Type: GrantFiled: February 12, 2003Date of Patent: February 7, 2006Assignee: Voith Paper Patent GmbHInventor: Pekka M. Typpo
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Publication number: 20040155196Abstract: A material sheet attribute detection system, the material sheet having a first side and a second side, the system includes a radiation source located proximate to the first side of the material sheet, the radiation source emitting radiation toward the material sheet, a radiation detection array located proximate to the second side of the material sheet, the radiation detection array producing at least one signal based on the radiation detected from the radiation source and a processor utilizing the at least one signal to determine a position of the material sheet.Type: ApplicationFiled: February 12, 2003Publication date: August 12, 2004Inventor: Pekka M. Typpo
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Patent number: 6498646Abstract: Apparatus and process for determining the properties of a material web. The apparatus includes at least one radiation source, and at least one detection device adapted to detect radiation emitted from the at least one radiation source that at least one of penetrates and is reflected by the material web. The detection device can include at least one detection area unevenly divided into a plurality of individual sensors. Further, the material web can be a paper web. The invention relates to a device and a process for determining the properties of a material web, particularly a paper web, having at least one radiation source and at least one detection device for radiation that is emitted by the radiation source and that penetrates and/or is reflected by the material web, said detection device having at least one detection area unevenly divided into a large number of individual sensors.Type: GrantFiled: March 24, 2000Date of Patent: December 24, 2002Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Pekka M. Typpo, Wolfgang Griech
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Patent number: 6145211Abstract: A caliper gauge for moving sheet material such as paper which measures the thickness of the paper accommodates bumps or holes in the paper by providing at least one side of the caliper gauge with a long continuous smooth arm which because of its mounting in close proximity to the moving sheet, which is partially made possible by the use of air bearings for the upper and lower portions of the gauge, provides a gradual wedge-shaped opening which thus allows the transfer of the momentum of the bump or hole in the paper to gradually overcome the inertia of the measuring arm which is pushed away from the paper. The arm itself is made of a single piece of sapphire and is universally pivoted by the use of a polyimide material adhered to the top of the arm which gives the arm at least 2.degree. of dimensional freedom while still maintaining it aligned in the moving direction of the paper.Type: GrantFiled: December 17, 1998Date of Patent: November 14, 2000Assignee: Impact Systems, Inc.Inventors: Pekka M. Typpo, Harold Welch
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Patent number: 6133578Abstract: For measuring basis weight of a moving web in the cross direction scanner of a paper-making machine, an encapsulated nuclear source of Promethium 147 is used because of its wide area of emission. To conserve space it is mounted on a vertical axis. The source in a horizontal plane parallel to the moving web from a stowed position where the source is shielded to an active position where the source emits through an aperture, through the moving web, and to a detector. The x-y array planar type detector uses four detector segments symmetrically arranged around a center and compensates for belt direction misalignment (the belt driving the cross direction scanners) by mathematically manipulating the electrical signals from each detector to eliminate the error term.Type: GrantFiled: July 7, 1998Date of Patent: October 17, 2000Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 6031620Abstract: A gloss sensor for determining the gloss of a surface, for example, of moving paper being produced by a paper making machine. The gloss sensor normally is installed in a scanner which scans the moving paper in a crosswise direction. It includes a standard TAPPI light source which impinges upon the paper at a specified angle and the intensity of the detected reflected light is related to gloss. Calibration is provided by an oscillating angle light source which with the same lamp has a direct reference path to the detector. Compensation for tilting or shifting paper is provided by the same oscillating light source which when the paper tilts or shifts still allows a reflected light beam to reach the detector. Change of angle from the standard TAPPI angle due to parallel paper shifts is compensated.Type: GrantFiled: April 28, 1998Date of Patent: February 29, 2000Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 5132619Abstract: A caliper gauge for relatively thin moving sheet material is provided by the use of a pair of outer ring air bearings flexibly supported which tend to flatten the sheet. An inner central portion of each ring respectively carries active and passive magnetic circuit means with the passive means being supported by an elongated strap of Kevlar which is elongated in the machine direction of the sheet material. This provides for very low unsprung weight.Type: GrantFiled: May 31, 1991Date of Patent: July 21, 1992Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 5010766Abstract: A measuring gauge for error compensation of a measured characteristic of a moving sheet measures X, Y lateral displacement of the upper and lower transducer heads of a moving scanner in a cross direction across the paper. This is accomplished by the use of two pairs of eddy current sensors centered on a target on the opposed transducer head. Such eddy current transducers sense the pairs of edges of an aperture in the opposed transducer. Alternatively, slope portions of the lower transducer head are sensed. Other correction inputs are provided by measuring the distance from each transducer head to the moving sheet to provide a "Z" correction. All of the foregoing are then utilized along with caliper measurements, if necessary, to provide a corrected characteristic.Type: GrantFiled: November 30, 1989Date of Patent: April 30, 1991Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 4929895Abstract: A caliper gauge for relatively thin moving sheet material is provided by the use of an outer ring type air bearing, flexibly supported, which is flexibly connected again to an inner air bearing carrying the magnetic measuring components. The outer air bearing (with its juxtaposed mate) tends to flatten the sheet so that minimum movement is required of the independently actuated inner air bearing. Thus, great accuracy is achieved and tearing or marking of the sheet material, such as super calendered or coated grades of paper, is avoided.Type: GrantFiled: March 22, 1989Date of Patent: May 29, 1990Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 4791367Abstract: A contacting thickness gauge for measuring the caliper of paper includes a U-shaped pole piece on one side of the paper with a return path being provided by a simple ferrite slab on the other side where the magnetic reluctance of the gaps provides a measure of the caliper. The pole piece has one leg of relatively small diameter contacting the paper; the other larger leg of the U-shaped pole piece being spaced from the paper by either jewel or air bearings to minimize the contact with the sensitive surface of the moving sheet material. The area ratio provides for an insensitivity of the gap of the large leg. In addition, the stray self inductance of the windings is eliminated due to the use only of a mutual inductance measurement to determine the final resonant frequency which is a measurement of the caliper.Type: GrantFiled: July 15, 1987Date of Patent: December 13, 1988Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 4748400Abstract: A moisture measurement and control system controlling the amount of moisture in paper being manufactured by papermaking machinery, for example, linerboard, utilizes a standard scanning moisture sensor to calibrate a nonscanning moisture sensor to thus provide very fast and accurate moisture measurements for each zone of the moving paper. The measurement is communicated to a fast response time moisture profiler, for example, of the quartz heater type. In addition, the nonscanning moisture measurement unit, which utilizes capacitive electrodes, has improved accuracy due to its electrode arrangement and signal processing technique.Type: GrantFiled: January 20, 1987Date of Patent: May 31, 1988Assignee: Impact Systems, Inc.Inventor: Pekka M. Typpo
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Patent number: 4432224Abstract: Methods and apparatus for transforming nonlinear sensor response such as that of a hydrogen sulfide detector to provide a desired output signal as a polynomial signal function.Type: GrantFiled: April 19, 1982Date of Patent: February 21, 1984Assignee: Delphian CorporationInventor: Pekka M. Typpo
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Patent number: 4247205Abstract: An apparatus and a method for standardizing a gas measuring device has a source capable of emitting a beam of radiation aligned to impinge a detector and gas particles. A hollow, open-ended tube is used as a standardization means and is placed adjacent to the beam. The tube can be moved to enclose the beam, to prevent the gas from intercepting the beam, and to transmit substantially all of the radiation from the source to the detector.Type: GrantFiled: February 2, 1979Date of Patent: January 27, 1981Assignee: Measurex CorporationInventor: Pekka M. Typpo
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Patent number: 4225243Abstract: An apparatus and a method for standardizing a gas measuring device has a source capable of emitting a beam of radiation aligned to impinge a detector. A housing means encloses the beam. The housing means has a plurality of apertures permitting the gas to enter the housing means, to intercept the beam, and to exit from the housing means. The device further comprises means for closing the apertures and a means for purging said gas from the housing means.Type: GrantFiled: June 26, 1978Date of Patent: September 30, 1980Assignee: Measurex CorporationInventor: Pekka M. Typpo
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Patent number: 4134211Abstract: A contacting caliper gauge measures the thickness of a sheet material moving from the anterior to the posterior of the gauge. The gauge has two matched heads, one to either side of the sheet. Each head has a base, a skid and a bellow. The skid is hinged to the anterior of the base and is between the base and the sheet. The other end of the skid is attached to a bellow. The bellow is also attached to the posterior of the base and is substantially perpendicular to the sheet. A cap is attached to the bellow. The cap has a surface parallel to the sheet near the posterior and rounded near the anterior. The two heads are positioned with the bellow of one in line with the bellow of the other. In a preferred embodiment, the gauge further comprises means for permitting the skid of each head to rotate about an axis which is substantially perpendicular to the hinge near the anterior of the base.Type: GrantFiled: December 9, 1977Date of Patent: January 16, 1979Assignee: Measurex CorporationInventors: Pekka M. Typpo, Gunnar Wennerberg, Tor G. Larsen