Patents by Inventor Claud Hagart-Alexander
Claud Hagart-Alexander 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: 7048827Abstract: Sheetmaking processes such as papermaking making systems employ water weight sensors underneath the moving water permeable wire that supports the wet stock (pulp slurry). A dynamically compensated calibration equation that equates the water weight plus fiber weight plus wire weight (total weight) to the resistance measured by the water weight sensor is developed for controlling the continuous process. Dynamic compensation accounts for changing papermaking machine conditions or states that affect the intrinsic conductivity of the wet stock being measured. The amount of correction to apply is determined by the conductance measured by a reference sensor.Type: GrantFiled: May 26, 2004Date of Patent: May 23, 2006Assignee: Honeywell International Inc.Inventors: John David Watson, Claud Hagart Alexander
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Publication number: 20050274473Abstract: Sheetmaking processes such as papermaking making systems employ water processes such as papermaking making weight sensors underneath the moving water permeable wire that supports the wet stock (pulp slurry). A dynamically compensated calibration equation that equates the water weight plus fiber weight plus wire weight (total weight) to the resistance measured by the water weight sensor is developed for controlling the continuous process. Dynamic compensation accounts for changing papermaking machine conditions or states that affect the intrinsic conductivity of the wet stock being measured. The amount of correction to apply is determined by the conductance measured by a reference sensor.Type: ApplicationFiled: May 26, 2004Publication date: December 15, 2005Applicant: Honeywell International Inc.Inventors: John Watson, Claud Hagart-Alexander
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Patent number: 6483325Abstract: A sensor apparatus and electrode configuration within the sensor apparatus for measuring electrical characteristics of an aqueous fibrous composition. The electrode configuration includes an elongated ground electrode and at least one segmented electrode to form an array of measurement electrode cells. The electrode configuration further includes an array of reference electrode cells formed by a plurality of reference electrodes built into the array of measurement electrode cells. The measurement electrode cells and reference electrode cells have a different sensitivity to water weight of the aqueous fibrous composition and the same sensitivity to conductivity of the aqueous fibrous composition. The measurement apparatus obtains simultaneous resistive measurements from both measurement and reference cells and determines the ratio of the measurements such that the affects from conductivity is canceled out of the measurement ratio.Type: GrantFiled: June 15, 2000Date of Patent: November 19, 2002Assignee: Honeywell International Inc.Inventors: Lee Chase, John D. Goss, Claud Hagart-Alexander, Martin G. Clarke, Graham V. Walford, Raymond Yu
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Patent number: 6466839Abstract: A system of providing fast machine direction (MD) and cross direction (CD) basis weight adjustments using a simultaneous multi-point water weight sensor which provides independent MD and CD measurements is described. The water weight sensor is placed under the wire of the sheetmaking machine and provides fast wet end water weight measurements which are converted into predicted dry end basis weight information and used to control operating variables of machine elements in the sheetmaking machine to compensate for high frequency process variations. MD wet end measurements are used to control operating variables of machine elements that influence the MD dry end basis weight and CD wet end measurements are used to control operating variables of machine elements that influence CD dry end basis weight.Type: GrantFiled: March 14, 2000Date of Patent: October 15, 2002Assignee: Honeywell-Measurex CorporationInventors: E. Michael Heaven, Claud Hagart-Alexander, Lee Chase, John D. Goss, David Watson
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Patent number: 6281689Abstract: A sensor apparatus and electrode configuration within the sensor apparatus for measuring electrical characteristics of an aqueous fibrous composition. The electrode configuration includes an elongated ground electrode and at least one segmented electrode to form an array of measurement electrode cells. The electrode configuration further includes an array of reference electrode cells formed by a plurality of reference electrodes built into the array of measurement electrode cells. The measurement electrode cells and reference electrode cells have a different sensitivity to water weight of the aqueous fibrous composition and the same sensitivity to conductivity of the aqueous fibrous composition. The measurement apparatus obtains simultaneous resistive measurements from both measurement and reference cells and determines the ratio of the measurements such that the affects from conductivity is canceled out of the measurement ratio.Type: GrantFiled: April 12, 1999Date of Patent: August 28, 2001Assignee: Honeywell-Measurex CorporationInventors: Lee Chase, John D. Goss, Claud Hagart-Alexander, Martin G. Clarke, Graham V. Walford, Raymond Yu
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Patent number: 6149770Abstract: A system and method of providing on-line turbulence measurements in a sheetmaking machine and using these measurements to perform on-line adjustments to turbulence-inducing and adjusting elements in the sheetmaking machine to optimize final sheet product quality. Turbulence measurements are obtained using water weight sensors in the wet-end of the sheetmaking machine and specifically under wire water weight measurements. Water weight readings are correlated to turbulence intensity levels by correlating ranges of water weights to intensity level intervals. A turbulence processing sensor sorts accumulated water weight measurement readings into intensity level intervals to obtain turbulence measurements or a turbulence profile. The turbulence measurements or profile is provided to a machine element controller which uses the measured turbulence information and target turbulence information to generate control signals.Type: GrantFiled: April 14, 1998Date of Patent: November 21, 2000Assignee: Honeywell-Measurex CorporationInventors: Hung-Tzaw Hu, Claud Hagart-Alexander, Lee Chase, John D. Goss, David Watson
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Patent number: 6092003Abstract: System and method for producing paper are provided. The system controls formation of wet stock comprising fibers on a moving water permeable wire of a de-watering machine that has a refiner that is subject to a variable load and a headbox having at least one slice, wherein each slice has an aperture through which wet stock is discharged at a stock jet speed onto the wire that is moving at a wire speed. A sheet of wet stock moving a speed develops on the wire.Type: GrantFiled: June 8, 1998Date of Patent: July 18, 2000Assignee: Honeywell-Measurex CorporationInventors: Claud Hagart-Alexander, Hung-Tzaw Hu, David Watson, John Preston
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Patent number: 6086716Abstract: System and method for producing paper are provided. The system controls formation of wet stock comprising fibers on a moving water permeable wire of a de-watering machine that has means for supplying the amount of pulp from at least one source, means for adding an amount of non-fibrous additives to the wet stock, a refiner that is subject to a variable load and a headbox having at least one slice, wherein each slice has an aperture through which wet stock is discharged onto the wire.Type: GrantFiled: May 11, 1998Date of Patent: July 11, 2000Assignee: Honeywell-Measurex CorporationInventors: John David Watson, Claud Hagart-Alexander, John D. Goss, John G. Preston, Hung-Tzaw Hu, Laslo Dudas
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Patent number: 6080278Abstract: A system and method of providing fast machine direction (MD) and cross direction (CD) basis weight adjustments using a simultaneous multi-point water weight sensor which provides independent MD and CD measurements is described. The water weight sensor is placed under the wire of the sheetmaking machine and provides fast wet end water weight measurements which are converted into predicted dry end basis weight information and used to control operating variables of machine elements in the sheetmaking machine to compensate for high frequency process variations. MD wet end measurements are used to control operating variables of machine elements that influence the MD dry end basis weight and CD wet end measurements are used to control operating variables of machine elements that influence CD dry end basis weight.Type: GrantFiled: January 27, 1998Date of Patent: June 27, 2000Assignee: Honeywell-Measurex CorporationInventors: E. Michael Heaven, Claud Hagart-Alexander, Lee Chase, John D. Goss, David Watson
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Patent number: 6076022Abstract: System and method for producing paper are provided. The system controls formation of wet stock comprising fibers on a moving water permeable wire of a de-watering machine that has a refiner that is subject to a variable load and a headbox having at least one slice, wherein each slice has an aperture through which wet stock is discharged at a certain stock jet speed onto the wire that is moving at a certain wire speed. The system includes: a) at least two water weight sensors that are positioned adjacent to the wire wherein the at least two sensors are positioned at different locations in the direction of movement of the wire and upstream from a dry line which develops during operation of the machine and the sensors generate signals indicative of a water weight profile made up of a multiplicity of water weight measurements; and b) means for adjusting at least one of the stock jet speed, wire speed, or to cause the water weight profile to match a preselected or optimal water weight profile.Type: GrantFiled: January 26, 1998Date of Patent: June 13, 2000Assignee: Honeywell-Measurex CorporationInventors: Claud Hagart-Alexander, Hung-Tzaw Hu, David Watson
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Patent number: 6072309Abstract: System and method for producing paper that employ an apparatus for measuring electrical characteristics of a fibrous composition. The apparatus comprises a plurality of conductivity (or resistance) detectors each comprising a sensor that is sensitive to the conductivity (or resistance) and the proximity of the material (e.g., fibrous composition) to the sensor. Measurements from the apparatus relate to the zeta potential of the fibrous materials in the composition. The zeta potential profiles corresponding optimized configurations of the sheetmaking process can be employed to monitor and control the process.Type: GrantFiled: April 23, 1998Date of Patent: June 6, 2000Assignee: Honeywell-Measurex Corporation, Inc.Inventors: John David Watson, Hung-Tzaw Hu, Claud Hagart-Alexander, Lee Chase, John D. Goss