Sheet, Woven Fabric Or Fiber Patents (Class 73/159)
  • Patent number: 6481275
    Abstract: The invention relates to a method and apparatus for measuring the tension of a moving web. In the invention, a measuring beam (2)is curved so that a web moving over or under the measuring beam (2) forms an air cushion (3) of the air it transports between the measuring beam (2) and the web (1). The web (1) causes a force effect transmitted by the air cushion on the measuring beam (2). The tension of the web (1) is measured by measuring the force caused by the web (1) and transmitted by the measuring beam (2).
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: November 19, 2002
    Assignee: Metso Paper Automation Oy
    Inventors: Pekka Koivukunnas, Timo Torvi
  • Patent number: 6477892
    Abstract: Methods and systems for ascertaining the roughness of a print media surface are described. In one embodiment, a print media roughness detection mechanism comprises a surface-engaging member that is configured to physically engage a print media surface. A reflective member is provided and is joined with the surface-engaging member. One or more light sources are provided in operable proximity to the reflective member and are configured to project light energy toward the reflective member. A position detector is mounted in operable proximity to the reflective member and is configured to receive light energy that is reflected from the reflective member. The surface-engaging member is configured for displacement by the print media's surface in accordance with variations in the roughness of the surface sufficiently so that light that is reflected by the reflective member and received by the position detector can be utilized to ascertain a measure of the print media's roughness.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: November 12, 2002
    Assignee: Hewlett-Packard Company
    Inventor: Darin D. Lindig
  • Patent number: 6474163
    Abstract: A method and apparatus for ultrasonic flaw detection of line focus type suitable for detection of flaws in nonmetallic materials included in an object. Ultrasonic transmitter and receiver elements of line focus type are opposed at a distance (L) with an object under test placed between them, and a maximum ultrasonic echo is obtained at a distance Lp expressed by: Lp=0.75(FT+FR)−{(CS/CW)−1}t where FT (mm) is the focal length in the medium of the ultrasonic transmitter element of line focus type, FR (mm) is the focal length in the medium of the ultrasonic receiver element line focus type, CS (m/sec) is the speed of ultrasound in an object under test, CW (m/sec) is the speed of ultrasound in the medium, and t (mm) is the thickness of the object under test.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: November 5, 2002
    Assignee: Kawasaki Steel Corporation
    Inventors: Hajime Takada, Akira Torao, Ikuo Yarita
  • Patent number: 6467357
    Abstract: A holding clamp for use in a testing apparatus for determining tensile and sheer strength characteristics of a reinforcement sheet. The holding clamp defines a channel having at least two adjacent bearing surfaces and an opening to an exterior surface. An elongate clamping bar conforming in cross-sectional shape at least relative to the pair of adjacent bearing surfaces is received within the channel with an end portion of the reinforcement sheet overwrapping the clamping bar and a portion of the reinforcement sheet extends outwardly through the opening for securing in the testing apparatus. A loading mechanism moves the clamp to load the reinforcement sheet, whereby the tensile or sheer strength characteristics can be determined. A method of clamping an end of a reinforcement sheet to be tested for tensile or sheer strength characteristics is disclosed for a testing apparatus.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: October 22, 2002
    Assignee: Geostar Corp.
    Inventor: Zehong Yuan Pe
  • Publication number: 20020144546
    Abstract: A method and an arrangement for keeping a measuring device clean, the measuring device being arranged to measure at least one property of a moving web and comprising at least one measuring head with at least one measuring element that is cleaned with cleaning agent during measurement.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 10, 2002
    Applicant: Metso Paper Automation Oy
    Inventor: Hannu Moisio
  • Patent number: 6460410
    Abstract: A tool is taught for measuring force transferred from a moving web to an idler roller. The tool includes a first drive shaft having a distal end adapted to be inserted into a capture bearing mounted on the idler roller. There is a torque meter rotationally driven by the first drive shaft through the rotation of the idler roller, the torque meter including a manual braking handle. The tool further includes a tachometer also rotationally driven by the first drive shaft through the rotation of the idler roller, the torque meter registering the force transferred by the moving web to the idler roller when the manual braking handle is operated to show a reduction in the rotational speed of the idler roller.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: October 8, 2002
    Assignee: Eastman Kodak Company
    Inventor: Gary L. Van Noy
  • Patent number: 6443002
    Abstract: An apparatus for testing of electrical, mechanical, physical and/or chemical properties of material in sheet form includes a cassette for holding of sheets and sensors rigidly mounted relative to the cassette. The sensors may be mounted adjacent a test location exterior to the cassette. The cassette and the sensors may be so configured and positioned that a suitable end effector may move sheets of material between storage locations in the cassette and test locations adjacent the sensors. A method for testing sheet material includes the steps of placing the sheet material in a cassette, and conducting tests employing one or more sensors rigidly mounted with respect to the cassette. The method may include employing an end effector to remove the sheet from the cassette, to position the sheet stepwise in several positions relative to the sensors, and to replace the sheet in the cassette upon completion of testing.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: September 3, 2002
    Assignee: Lehighton Electronics, Inc.
    Inventors: Austin R. Blew, Alexander Eidukonis
  • Patent number: 6441904
    Abstract: The invention relates to a method and an apparatus for measuring properties of a moving web. Web properties are measured with a measuring apparatus where at least one sensor element is arranged to a rotating measuring roll. The measuring roll is in contact with the web to be measured, and the circumferential speed of the measuring roll is arranged to substantially equal the web speed, the web being substantially in non-slipping contact with the measuring roll for an arc of the rotation of the measuring roll.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: August 27, 2002
    Assignee: Metso Paper Automation Oy
    Inventor: John Shakespeare
  • Patent number: 6439036
    Abstract: A method for evaluating a test fluid as a fabric care composition or as a component thereof The method includes providing a test sheet of fabric comprising a plurality of test regions and simultaneously contacting each of the plurality of test regions with a different test fluid. The method further includes screening the plurality of test regions or the contacted test fluids for a fabric property of interest to evaluate the relative efficacy of the different test fluids.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: August 27, 2002
    Assignee: Symyx Technologics, Inc.
    Inventor: Paul Mansky
  • Patent number: 6430995
    Abstract: The invention relates to a method and a device for evaluating the quality of a yarn (1). In order that further aspects of the quality of a yarn may be taken into consideration and explained by measured values so that the quality of a yarn is as a whole substantially detectable, measured values relating on the one hand to the yarn exposed to friction and on the other hand to the yarn not exposed to friction are to be derived from the yarn. Both measured values are used to form a further measured value which represents a further qualitative feature.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: August 13, 2002
    Assignee: Zellweger Luwa AG
    Inventor: Peter Feller
  • Publication number: 20020083764
    Abstract: The stickiness of cotton is determined by testing a cotton sample at two or more temperatures. Sticky deposits are recorded at a lower temperature, preferably 27° C. or 34° C., to detect the trehalulose-rich honeydews droplets. Then, the sample is subjected to a higher temperature, preferably 54° C., to detect the non trehalulose-rich honeydew droplets and physiological sugars. By comparing the results at these two temperatures, an accurate grading system for cotton may be produced which can help growers and spinners accurately identify different types of cotton and determine processing problems.
    Type: Application
    Filed: January 4, 2001
    Publication date: July 4, 2002
    Inventors: Eric Francois Hequet, Noureddine Abidi
  • Patent number: 6412342
    Abstract: The invention relates to a device for measuring properties of a textile test specimen in a measuring gap (2), in which the textile test specimen is introduced, the measuring gap being formed by two walls. In order to provide a device of the type described, with which adjustment of the guide is simplified and with which the test specimen is nevertheless guided with sufficient accuracy, there is provided in the measuring gap a guide element (15) for the test specimen, which is associated with a wall and adjusted in a stationary manner relative to said wall.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: July 2, 2002
    Assignee: Zellweger Luwa AG
    Inventors: Jürg Zehr, Diego Madone, Walter Isotton
  • Publication number: 20020080851
    Abstract: The invention relates to a method of and a device for detecting the flatness of a metal band product at high temperature, using a measuring roll (1) having a cylindrical external face (13) comprising an angular contact sector with the band and a free sector.
    Type: Application
    Filed: October 19, 2001
    Publication date: June 27, 2002
    Inventors: Jean-Paul Faure, Thierry Malard
  • Patent number: 6405589
    Abstract: An arrangement for examining a textile material section is provided, more particularly of toweling goods, by visual inspection by an examiner. In this respect, the examining arrangement has a laying area arranged in the field of vision of the examiner, in which the material section can be positioned so that it is laid flat for examination of the first side of the material section. In addition, the examining arrangement includes a turning device (2, 3), by which the material section (4), starting from the position for examining the first side (8) of the material section (4), can be reversed in such a manner that the material section (4) can be positioned so that it is laid flat in the laying area (6) for examination of the second side (10) of the material section (4).
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: June 18, 2002
    Assignee: Texpa Maschinenbau GmbH & Co.
    Inventors: Karl Muessig, Roland Behr
  • Publication number: 20020066310
    Abstract: Method and apparatus for providing film stress measurements. The invention provides a method for calculating film stress based on an inverse finite element analysis of a displaced substrate such as a semiconductor wafer. The surface displacement of the substrate is measured, and structural compliance based on an inverse finite element model of the substrate is determined. A stress field is ultimately calculated based on the structural compliance and a stress-load. The stress measurement is output based on values in the stress field. The invention can be implemented in software running on a computer system interfaced to a measurement system such as a stress and flatness gauge.
    Type: Application
    Filed: July 17, 2001
    Publication date: June 6, 2002
    Inventor: Anton F. Jachim
  • Publication number: 20020066311
    Abstract: A bulge tester (20) for determining residual stresses, and mechanical, thermal and other properties of a thin film (26) of material. The bulge tester includes a chuck (22) that supports the substrate (24) on which the film is deposited by stiction rather than through the use of mounting waxes, adhesives and mechanical clamping. The stiction inducing media (52) may be viscous grease, a flexible sheet of material such as a rubber, an elastomer, both or other materials. Bulge testing performed using the stiction-based chuck involves inducing stiction between the base (42) of the chuck and substrate of at least at least 1 kPascal (0.69 lb/in2), as determined using a corner peel test. Then pressurized fluid is delivered to the film to be tested, and materials properties of the film are determined as a function of pressure of the fluid and deflection of the film.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 6, 2002
    Applicant: University of Vermont and State Agricultural College
    Inventors: Dryver R. Huston, Wolfgang Sauter, Peter A. Sonntag
  • Patent number: 6397671
    Abstract: An ultrasonic wave that is transmitted from an ultrasonic-wave transmitter 1 is received by an ultrasonic-wave receiver 2, through a sheet 4. A reception signal is input to an extracting unit 19. The extracting unit compares its phase with a phase of a reference signal output from a reference-signal reproduction unit 18. It converts a phase difference therebetween into a signal having a level corresponding to the phase difference. The signal having a level corresponding to the phase difference is compared with a threshold value set in a threshold-value setter 20, by a comparator 21. When one sheet 4 is fed, the comparator 21 produces a signal of high level. When a doubles feeding occurs, it produces a signal of low level.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: June 4, 2002
    Assignee: Omron Corporation
    Inventors: Goki Nishio, Yuji Ohashi, Hideki Chujo, Masashi Sugimoto, Takeshi Arihara, Koji Iesaki
  • Patent number: 6397672
    Abstract: The invention sets forth a method for determining the hand quality of a fabric or other material. The invention establishes a new constant value to be applied to this determination. The constant value is referred to as the Quality Energy Value (hereinafter the “QE value”) of a material. The QE value takes into account the reciprocatory motion actually used when rubbing a piece of cloth with a finger to subjectively determine the hand quality of a fabric. The invention utilizes a testing apparatus which simulates this sliding motion of finger on fabric. The QE value also advantageously takes into account the velocity at which the frictional properties of the fabric are measured. It has been found that the lower the QE value, the better the quality of the fabrics. Accordingly, using the method of the invention, a range of QE values may be established for a variety of fabrics, and, thereby, the relative hand qualities of the fabrics may be compared.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: June 4, 2002
    Assignee: Texas Tech University
    Inventor: Seshardi S. Ramkumar
  • Publication number: 20020062689
    Abstract: A web tension measurement device includes a roller for a web of material, the movable roller having an axis of rotation moveable in a first direction by the web; a counteracting device connected to the movable roller, the counteracting device for forcing the axis of the roller in a second direction opposite the first direction; and a controller connected to the counteracting device for measuring the web tension. Also included is a method for measuring tension in a web which comprises the steps of running a web over a roller, an axis of the roller being movable in a first direction, counteracting the movement of the roller in a second direction opposite the first direction, and measuring a counteracting force or a variable so as to be able to determine a web tension.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 30, 2002
    Inventors: Kevin Lauren Cote, Lothar John Schroeder
  • Publication number: 20020062688
    Abstract: A webbing tension sensing unit which includes a base and a cover and an elastically biasing element mounted within the base and cover. The webbing of, for example, a seat belt is operably connected to a sensor also housed within the base and cover. The sensor detects movement in relation to the elastically biasing element and generates electrical signals in proportion to the movement as a function of the tension in the webbing. The signals are used for analysis as part of a system to determine if devices such as an air bag or warning light should be triggered.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 30, 2002
    Inventor: Richard Lawson
  • Publication number: 20020056317
    Abstract: A method of measuring Tinting of fibrous materials, includes:
    Type: Application
    Filed: November 15, 2001
    Publication date: May 16, 2002
    Applicant: SCA Hygiene Products AB
    Inventor: Mikael Strandqvist
  • Patent number: 6386027
    Abstract: A method of measuring the z-directional tensile strength of a sample (2) of paper or board in a direction perpendicular to its surface by coating the sample (2) on the two opposite surfaces with double-sided pressure-sensitive adhesive tape (5, 5′) so as to obtain a sandwich structured sample web (3); bringing, on each of the two opposite sides of the sample web (3), a tensile strength tester platen (10, 10′) in contact with the free surface of the double-sided pressure-sensitive adhesive tape (5, 5′); fastening, on each of the two opposite sides of the sample web (3), the tensile strength tester platen (10, 10′) to the free surface of the double-sided pressure-sensitive adhesive tape (5, 5′); pulling apart the tensile strength tester platens (10, 10′) by use of a tensile force; and measuring the tensile force necessary to break the sample (2) in a plane between its opposite surfaces; characterized in that a number of z-directional tensile strength tests may be performed at
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 14, 2002
    Assignee: AB Lorentzen & Wettre
    Inventor: Dennis Westin
  • Patent number: 6360596
    Abstract: A web tension transducer for mounting between a stationary fixture and a pillow block rotationally supporting a web roller shaft is provided. The transducer includes a body mounted to said fixture for pivotal movement about a single horizontal axis at one longitudinal end, and having a strain gage mounted in a transverse horizontal slot at the opposite end of said body, thus providing maximum deflection of the strain gage in response to downward force applied to the shaft for measurement of the web tension.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: March 26, 2002
    Assignee: Cleveland Motion Controls, Inc.
    Inventor: Thierry L. Callendrier
  • Patent number: 6356846
    Abstract: The present invention provides a system and method to reduce motion-induced noise in the detection of ultrasonic signals in a moving sheet or body of material. An ultrasonic signal is generated in a sheet of material and a detection laser beam is moved along the surface of the material. By moving the detection laser in the same direction as the direction of movement of the sheet of material the amount of noise induced in the detection of the ultrasonic signal is reduced. The scanner is moved at approximately the same speed as the moving material. The system and method may be used for many applications, such in a paper making process or steel making process. The detection laser may be directed by a scanner. The movement of the scanner is synchronized with the anticipated arrival of the ultrasonic signal under the scanner.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: March 12, 2002
    Assignee: Institute of Paper Science and Technology, Inc.
    Inventors: Charles C. Habeger, Jr., Emmanuel F. LaFond, Pierre Brodeur, Joseph P. Gerhardstein
  • Patent number: 6352615
    Abstract: The invention concerns an equipment in a paper/board machine for regulation of the difference of draw. In the solution in accordance with the invention, the difference of draw in the web is regulated on the basis of the measured tension of the web. Preferably, the regulation of the difference of draw takes place by regulating the drives at the inlet and/or outlet of a web run not supported by a wire.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: March 5, 2002
    Assignee: Valmet Corporation
    Inventors: Seppo Tavi, Harri Mustonen, Antti Komulainen
  • Publication number: 20020014120
    Abstract: The invention relates to a method for determining structural inhomogeneities in sheet material, in particular due to creases or tears in bank notes.
    Type: Application
    Filed: June 21, 2001
    Publication date: February 7, 2002
    Inventors: Bernd Wunderer, Ulrich Schanda
  • Patent number: 6343508
    Abstract: The invention relates to a method for representing properties of elongated textile test specimens such as yarns, rovings and ribbons. In order to create a method which makes values of parameters or measurement results in general ascertainable at a glance even in large numbers and nevertheless also takes differentiated account of critical and less critical parameters or measurement results, values of parameters are plotted along axes which are arranged inclined or substantially concentric relative to one another. A parameter is preferably also represented as a segment (31-36) of a circle, wherein the angle between two axes which intersect in the center of the circle and bound the segment is proportional to the importance of the parameter in a predetermined connection and the radius of the segment is proportional to the measured value for the parameter.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: February 5, 2002
    Assignee: Zellweger Luwa AG
    Inventor: Peter Feller
  • Patent number: 6343240
    Abstract: The invention relates to method for identifying plural relations in a sheet manufacturing process. Sheet properties are deduced from a response in a pseudo-property profile to a cyclic stimulation. A pseudo-property profile is calculated using a phase lag equal to half the stimulation cycle time, with and without stimulation. The properties of the sheet are deduced from the difference between an excited pseudo-property profile and a reference pseudo-property profile.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: January 29, 2002
    Assignee: Neles Paper Automation OY
    Inventors: John Shakespeare, Tapio Metsälä
  • Patent number: 6341522
    Abstract: A sensor imbedded roller for detecting changes in properties of a material and a measurement apparatus including a fixed impedance element coupled in series with a variable impedance sensor imbedded roller between an input signal and a reference potential (e.g. ground) is described. The sensor, which includes an electrode configuration, is imbedded into a roller such that when it rotates it comes in contact with the material being measured and its impedance varies. The variable impedance of the sensor relates to changes in property of the material being sensed which can then be related to changes in other physical characteristics of the material such as weight, chemical composition, and temperature. Sensor imbedded rollers can be placed in a sheetmaking machine to measure the pre-formed and post-formed paper product.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: January 29, 2002
    Assignee: Measurex Corporation
    Inventors: John D. Goss, Lee Chase
  • Publication number: 20020005067
    Abstract: A transfer roll 1 for conveying a strip of substantially flat material from one device to another. The strip passes over the transfer roll as the transfer roll rotates. The transfer roll includes a flat and smooth cylindrical outer skin which comprises at least two cylindrical elements. Between the cylindrical elements is arranged a means 7 for reducing the mechanical stiffness of the cylindrical skin relative to the stiffness-of the remainder of the cylindrical skin 2. Suitable means such as a welded joint 9 of reduced cross sectional thickness compared to the remainder of the cylinder are described. Such means separate the cylinder mechanically into a plurality of measurement areas with a predetermined degree of crosstalk. The transfer roll may be used to measure force or tension in strip material more accurately than with previous devices.
    Type: Application
    Filed: June 15, 2001
    Publication date: January 17, 2002
    Inventors: Kjell Ingvarsson, Dan Johansson, Ulf Olsson, Par Gustafsson
  • Patent number: 6318153
    Abstract: A sensor (1) is proposed for noncontacting thickness gauging on films (2), in particular blown films, with a sensor head (3) and a mount (4) for the sensor head (3), which provides reliable measuring results despite transportation-caused movements of the film (2), and which is particularly suitable for a continuous quality control during the production process. In accordance with the invention, the sensor head (3) comprises at least one noncontacting sensor element for gauging the thickness in accordance with the physical properties of the film (2). Furthermore, the position of the sensor head (3) is adjustable such that the sensor head (3) is held during the entire measuring process at a predeterminable, at least largely constant distance from the film (2).
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: November 20, 2001
    Assignee: Micro-Epsilon Messtechnik GmbH & Co. KG
    Inventors: Martin Dumberger, Axel Seikowsky, Martin Sellen, Karl Wisspeintner
  • Patent number: 6308570
    Abstract: A method and apparatus for determining the caliper and/or the ultrasonic transit time through the thickness direction of a moving web of material using ultrasonic pulses generated by a rotatable wheel ultrasound apparatus. The apparatus includes a first liquid-filled tire and either a second liquid-filled tire forming a nip or a rotatable cylinder that supports a thin moving web of material such as a moving web of paper and forms a nip with the first liquid-filled tire. The components of ultrasonic transit time through the tires and fluid held within the tires may be resolved and separately employed to determine the separate contributions of the two tire thicknesses and the two fluid paths to the total path length that lies between two ultrasonic transducer surfaces contained within the tires in support of caliper measurements.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: October 30, 2001
    Assignee: Institute of Paper Science and Technology, Inc.
    Inventors: Theodore Jackson, Maclin S. Hall
  • Publication number: 20010032502
    Abstract: Measuring system and process for determining properties of a running fibrous material web in a drying section of a machine producing the fibrous material web. The system includes at least one upper roll and at least one lower roll. The fibrous material web is arranged to partially wrap the at least one upper roll and the at least one lower roll and to run between these rolls at an angle between about 0° and 45° to a vertical. A sensor guide is arranged crosswise to a web run direction, and at least one sensor is arranged to traverse the sensor guide in the web run direction in a region of the at least one lower roll. The sensor is structured and arranged for determining a web parameter, and is oriented to form a maximum angle of about 60° to a horizontal through an axis of the lower roll.
    Type: Application
    Filed: March 26, 2001
    Publication date: October 25, 2001
    Applicant: VOITH PAPER PATENT GmbH
    Inventors: Markus Oechsle, Frank Wegehaupt
  • Publication number: 20010025528
    Abstract: An apparatus for testing of electrical, mechanical, physical and/or chemical properties of material in sheet form includes a cassette for holding of sheets and sensors rigidly mounted relative to the cassette. The sensors may be mounted adjacent a test location exterior to the cassette. The cassette and the sensors may be so configured and positioned that a suitable end effector may move sheets of material between storage locations in the cassette and test locations adjacent the sensors. A method for testing sheet material includes the steps of placing the sheet material in a cassette, and conducting tests employing one or more sensors rigidly mounted with respect to the cassette. The method may include employing an end effector to remove the sheet from the cassette, to position the sheet stepwise in several positions relative to the sensors, and to replace the sheet in the cassette upon completion of testing.
    Type: Application
    Filed: March 20, 2001
    Publication date: October 4, 2001
    Inventors: Austin R. Blew, Alexander Eidukonis
  • Patent number: 6289729
    Abstract: A sensor system for determining the position of at least one edge of a web of material is provided. The sensor system includes a transmitter and a receiver disposed on opposite sides of the web. The transmitter is capable of selectively transmitting ultrasonic signals, and the receiver is capable of receiving such ultrasonic signals and generating output signals indicative of the position of the web. The sensor system further includes a sensor drive circuit adapted to periodically transmit to the transmitter a transmitter drive signal representative of substantially one cycle of a signal, and to receive signals from the receiver with each signal being indicative of the position of the web.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: September 18, 2001
    Assignee: Fife Corporation
    Inventors: Md M. Haque, Darcy Winter, Dale Hueppelsheuser, John P. Newton, Greg A. Storie
  • Patent number: 6289730
    Abstract: A detection system for detecting the size of a print medium. A hollow tube is positioned adjacent the paper or print medium. An ultrasonic transducer apparatus launches pulses of ultrasonic energy into the tube, and is responsive to ultrasonic echoes of the pulses to convert echo pulse energy into electrical detected signals. A flag positioning apparatus selectively positions a blocking flag within the tube at a location spaced from the transducer apparatus which is indicative of a print medium size. A controller responds to the electrical detected signals to determine a print medium size. The flag positioning apparatus can provide a single flag movable along a longitudinal extent of the tube, or a set of flags spaced along the longitudinal extent, one or more of which are selectably deflected by the print medium.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: September 18, 2001
    Assignee: Hewlett-Packard Company
    Inventor: Steven B. Elgee
  • Patent number: 6272908
    Abstract: A flexural assemblage and method for inspecting a highly sensitive surface using a probe flexibly fixed in close proximity to the sensitive surface pivots away from the moving web surface when a surface protuberance contacts the probe. An armature element of the flexural assemblage contains one or more probes. The armature is biased against movement, but the force of the moving protuberance when contacting the probe overcomes the bias and pivots the probe and armature away before damage results to the web surface or web carrier.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: August 14, 2001
    Assignee: Eastman Kodak Company
    Inventors: Theodore R. Boccuzzi, Robert Kerprich
  • Publication number: 20010011477
    Abstract: An instrument is provided with several sensing elements to enable several parameters of a processed yarn to be measured or determined. In order to minimize the total sensing element/guide contact with the yarn within the complete process threadline, the yarn is guided through the instrument by contact only with the inlet and outlet guiding elements of the instrument and contact operative sensing elements. One particular instrument consists, in succession, of an interlace sensing device, a tension sensing device and an oil content sensing device. The electrical resistance of the yarn is measured between two pins of the oil content sensing device and in this case, the first pin is also a tension sensing pin of the instrument, and the second pin of the oil content sensing device is also the outlet guide of the instrument.
    Type: Application
    Filed: August 6, 1999
    Publication date: August 9, 2001
    Inventor: MALCOLM GEOFFREY HINCHLIFFE
  • Patent number: 6264792
    Abstract: A method and apparatus for producing calendered paper by an on-line manufacturing system comprising at least a paper machine and a multi-nip calender. The method comprises following steps: removing water from a formed paper web by pressing, drying the pressed paper web by at least one dryer, calendering the dried web by the multi-nip calender, measuring a cross-machine moisture profile or a variable relative thereto, and altering the moisture of the web so that the moisture profile of the web in the cross-direction is even when the web enters the first nip of the calender.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: July 24, 2001
    Assignee: Valmet Corporation
    Inventors: Harri Kuosa, Markku Kyytsönen, Juhani Partanen, Kari Sipi, Eero Suomi, Antti Heikkinen, Mikko Tani, Juha Lipponen, Mika Tammenoja, Kari Juppi
  • Patent number: 6264793
    Abstract: The invention relates to a method and apparatus for measuring the caliper of paper substantially continuously during papermaking. A sensor (3a, 3b) is arranged above and/or under the paper (2), the sensor (3a, 3b) measuring the caliper of the paper (2) at least on one side of the paper (2) mainly without contacting the surface of the paper (2). At given intervals the sensor (3a, 3b) measuring mainly without contact is brought into momentary contact with the surface of the paper (2).
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 24, 2001
    Assignee: Metso Paper Automation Oy
    Inventors: Mauri Ojala, Hannu Moisio
  • Patent number: 6253604
    Abstract: A scanner for moving sheet material such as a paper-making machine provides the gauging heads which measure parameters such as basis weight and moisture entirely inside an enclosed tubular beam. Each gauging head is driven by a single belt which both drives the gauging head in a cross direction perpendicular to the moving sheet direction and provides for dust and dirt protection by covering a slot in the beam, except where the gauging head is located.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: July 3, 2001
    Assignee: Impact Systems, Inc.
    Inventors: Lee Henry, Steven Nelson
  • Patent number: 6253603
    Abstract: In an apparatus for checking the condition of bank notes, each note is individually transported past a brush whose bristles are in contact with one face of the note. A piezoelectric bi-morph vibration sensor is attached to the brush, the voltage output from the sensor being dependent on the amplitude of vibration of the bristles of the brush brushing against a note. The poorer the condition of a note, i.e. the rougher that its surface is, then the greater will be the amplitude of vibration of the bristles. Thus, from the voltage output of the sensor it can be determined whether a note is of an acceptably good condition.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: July 3, 2001
    Assignee: NCR Corporation
    Inventor: Gary A. Ross
  • Patent number: 6250146
    Abstract: A moving web tension monitoring apparatus of easily fabricated, relatively inexpensive and easily assembled construction comprises a cantilever mounted strain beam element coupled at the flexurable end thereof through a rigid coupling to one end of the support shaft for the web supporting guide roll. A twin beam type transducer having strain gauges at the flex points of the beams is coupled to the shaft supporting the moving web. The strain gauges are located and electrically connected to measure the radial forces applied to the shaft. A shaft coupler connects the shaft to a bearing in the transducer to reduce slippage of the shaft. The transducer is designed to be easily adjusted so that the forces applied to the shaft are accurately detected. The components of the transducer are also adjustable to alter the rigidity and/or resonance frequency of the transducer.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: June 26, 2001
    Assignee: Cleveland Motion Controls, Inc.
    Inventor: Thierry L. Callendrier
  • Publication number: 20010003921
    Abstract: An arrangement for examining a textile material section is provided, more particularly of toweling goods, by visual inspection by an examiner. In this respect, the examining arrangement has a laying area arranged in the field of vision of the examiner, in which the material section can be positioned so that it is laid flat for examination of the first side of the material section. In addition, the examining arrangement includes a turning device (2, 3), by which the material section (4), starting from the position for examining the first side (8) of the material section (4), can be reversed in such a manner that the material section (4) can be positioned so that it is laid flat in the laying area (6) for examination of the second side (10) of the material section (4).
    Type: Application
    Filed: June 23, 1999
    Publication date: June 21, 2001
    Inventors: KARL MUESSIG, ROLAND BEHR
  • Patent number: 6244030
    Abstract: The invention relates to a process and device for monitoring the quality of yarns. In order to differentiate extraneous materials in a yarn section front the yarn itself and from other extraneous materials more effectively, a signal (10) derived from the yarn (8) must be classified in a classification field (16). On the basis of that classification, the extraneous materials contained in the yarn and their types can be determined.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: June 12, 2001
    Assignee: Zellweger Luwa AG
    Inventors: Werner Arb, Christoph Färber
  • Patent number: 6241244
    Abstract: An automated banking machine (10) identifies and stores documents such as currency bills deposited by a user. The machine then selectively recovers such documents from storage areas and dispenses them to other users. The machine includes a sheet thickness detector (810) used for distinguishing single sheets from double sheets which pass through the machine. The thickness detector includes a radiation source (822). Radiation from the radiation source is directed by radiation guide (824) to a generally linear elongated radiation outlet (826) which extends transversely to the sheet path. A receiver (814) includes a radiation sensitive element (830) which is also transversely elongated relative to the sheet path. Sheets passing between the emitter and the receiver cause variations in the amount of radiation reaching the receiver. The transversely elongated surface of the sheet through which the transmission of radiation is sense enables accurately distinguishing single sheets from double sheets.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: June 5, 2001
    Assignee: Diebold, Incorporated
    Inventor: Al Modi
  • Patent number: 6216353
    Abstract: A centerline detector for a tubular knit fabric lay cutter table. The apparatus includes a nearside side edge compressor for determining the position of the nearside edge of the fabric lay and providing a signal representative of the nearside edge. The apparatus also includes a farside side edge compressor for determining the position of the farside edge of the fabric lay and providing a signal representative of the farside edge. A controller is connected to the nearside side edge compressor and the farside side edge compressor for receiving the signal representative of the nearside edge and the signal representative of the farside edge and calculating a first centerpoint of the fabric lay. In the preferred embodiment the centerline detector makes at least two measurements along a length of the fabric lay.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: April 17, 2001
    Assignee: Sara Lee Corporation
    Inventor: James Moore Schenck
  • Patent number: 6205852
    Abstract: An apparatus for testing of electrical, mechanical, physical and/or chemical properties of material in sheet form includes sensors which may be positioned adjacent to a surface of material in sheet form located in a cassette and supports positioned to reduce sag of the material. A method for testing sheet material includes the steps of placing the sheet material in a cassette, and testing the sheet material while in the cassette. A cassette includes shelves having defined therein test heads for testing properties of material in sheet form. Shelves may have test heads or sensors mounted in a lower surface thereof, which test heads or sensors cooperate with test heads or sensors mounted in the upper surface of the next lower shelf. Shelves may include test points that have multiple sensors that cooperate, such as by inductive coupling, to test the material.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: March 27, 2001
    Assignee: Lehighton Electronics, Inc.
    Inventor: Austin R. Blew
  • Patent number: 6202482
    Abstract: An apparatus for testing of electrical, mechanical, physical and/or chemical properties of material in sheet form includes a cassette for holding of sheets and sensors rigidly mounted relative to the cassette. The sensors may be mounted adjacent a test location exterior to the cassette. The cassette and the sensors may be so configured and positioned that a suitable end effector may move sheets of material between storage locations in the cassette and test locations adjacent the sensors. A method for testing sheet material includes the steps of placing the sheet material in a cassette, and conducting tests employing one or more sensors rigidly mounted with respect to the cassette. The method may include employing an end effector to remove the sheet from the cassette, to position the sheet stepwise in several positions relative to the sensors, and to replace the sheet in the cassette upon completion of testing.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: March 20, 2001
    Assignee: Lehighton Electronics, Inc.
    Inventors: Austin R. Blew, Alexander Eidukonis
  • Patent number: 6200422
    Abstract: Method and apparatus for controlling moving paper web during manufacture or subsequent processing, wherein a web elongation profile and a moisture profile are measured. The web elongation is governed by at least two CD moisture actuators, which are situated at different stages in the web manufacturing process or subsequent processing. Means for measuring the web elongation profile and the moisture profile are situated after the CD actuators.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: March 13, 2001
    Assignee: Neles Paper Automation Oy
    Inventors: John Shakespeare, Juha Kniivilä