John Am Goss

US Patent:

6341522, Jan 29, 2002

Filed:

Apr 6, 1998

Appl. No.:

09/056932

Inventors:

John D. Goss - San Jose CA
Lee Chase - Los Gatos CA

Assignee:

Measurex Corporation - Cupertino CA

International Classification:

G01L 504

US Classification:

73159, 73 73

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.

US Patent:

6466839, Oct 15, 2002

Filed:

Mar 14, 2000

Appl. No.:

09/525229

Inventors:

E. Michael Heaven - Vancouver, CA
Claud Hagart-Alexander - Vancouver, CA
Lee Chase - Los Gatos CA
John D. Goss - San Jose CA
David Watson - Etobicoke, CA

Assignee:

Honeywell-Measurex Corporation - Morristown NJ

International Classification:

G06F 766

US Classification:

700128, 700 52, 700 67, 700122, 700127, 700305, 162253, 162254, 162262

Abstract:

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.

US Patent:

6483325, Nov 19, 2002

Filed:

Jun 15, 2000

Appl. No.:

09/594593

Inventors:

Lee Chase - Los Gatos CA
John D. Goss - San Jose CA
Claud Hagart-Alexander - Vancouver, CA
Martin G. Clarke - N. Vancouver, CA
Graham V. Walford - Oakridge TN
Raymond Yu - Surrey, CA

Assignee:

Honeywell International Inc.

International Classification:

G01N 2702

US Classification:

324696, 324449, 162198

Abstract:

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. The determined measurement ratio is used to obtain a measurement of the water weight of the aqueous fibrous composition by using previously determined characterization data of the water weight vs.

US Patent:

59449551, Aug 31, 1999

Filed:

Jan 15, 1998

Appl. No.:

9/007733

Inventors:

David A. Bossen - Palo Alto CA
E. Michael Heaven - North Vancouver, CA
John D. Goss - San Jose CA

Assignee:

Honeywell-Measurex Corporation - Cupertino CA

International Classification:

D21F 106
D21F 108
D21F 700

US Classification:

162198

Abstract:

Apparatus and process for controlling the basis weight of paper produced in a papermaking machine are provided. In the papermaking process, a major portion of the paper stock flows through a first line that is controlled by a thick stock valve and a minor portion of the stock flow from the stuff box to the headbox is diverted through a second line that is regulated by a second valve (e. g. , vernier valve). The thick stock valve is controlled by the dry end basis weight and the second valve responsive to measurements of the basis weight of the wet stock at the wire. The second line and control valve along with the wet end basis weight measurements form a fine control loop with fast response time whereas the first line and control valve that is responsive to dry end basis weight measurements form a course control loop. The dual control loops enable fast and actual basis weight control.

US Patent:

46789154, Jul 7, 1987

Filed:

Mar 14, 1985

Appl. No.:

6/711880

Inventors:

John Dahlquist - Palo Alto CA
John Goss - San Jose CA
Gunnar Wennerberg - Cupertino CA

Assignee:

Measurex Corporation - Cupertino CA

International Classification:

G01N 2772
G01R 3300
G01F 2300

US Classification:

2503581

Abstract:

A system for measuring the values of a parameter of a sheet of material is provided. The system includes a head system with sensors mounted therein and a distance correction system to correct the measured parameter for variations in the distance between parts of the head system.

US Patent:

53151240, May 24, 1994

Filed:

Mar 20, 1992

Appl. No.:

7/856382

Inventors:

John D. Goss - San Jose CA
Steve Axelrod - Los Altos CA
Mathew Boissevain - Los Altos Hills CA
Philip M. Hegland - San Jose CA
Scott C. Wiley - Sunnyvale CA

Assignee:

Measurex Corporation - Cupertino CA

International Classification:

G21F 502

US Classification:

2504971

Abstract:

A nuclear gauge for making measurements of traveling webs in continuous sheet-making processes includes an enclosure, an encapsulated nuclear source, and a wheel-like member mounted in the enclosure means for carrying the encapsulated nuclear source between two angularly-displaced positions. The first of the angularly-displaced positions is the position where the encapsulated nuclear source makes measurements of a web that travels past the gauge and the second position is the location where the encapsulated nuclear source faces a sidewall of the enclosure means at a location remote from the first position. The nuclear gauge also has an aperture which is formed through the enclosure for providing a window through which the encapsuled nuclear source, when located in the first position, can emit radiation onto a web that travels past the window.

US Patent:

59284757, Jul 27, 1999

Filed:

Sep 18, 1997

Appl. No.:

8/933161

Inventors:

Lee Chase - Los Gatos CA
John D. Goss - San Jose CA
Graham V. Walford - Oakridge TN
John Preston - Los Altos CA

Assignee:

Honeywell-Measurex, Corporation - Cupertino CA

International Classification:

D21F 1100
G01R 2702

US Classification:

162198

Abstract:

A system and method that combine an array of fast under wire water weigh sensors with a scanning system provides an accurate measurement of the entire sheet down to 1 in. by 1 in. resolution. Because CD profiles are obtained instantaneously, MD and CD variations are completely decoupled, even if CD profiles are taken at longer intervals apart. The technique allows monitoring the basis weight of a sheet of material that is formed in a process that employs a de-watering machine that includes a water permeable moving fabric supporting wet stock and a dry end which technique includes the steps of: a) positioning an array of water weight sensor elements (array) underneath and adjacent to the fabric wherein the array is positioned in a cross direction to the moving fabric; b) positioning a scanning sensor at the dry end to measure the dry basis weight of the sheet of material; c) operating the machine and measuring the water weights of the sheet of material with the array and measuring the dry basis weight of the sheet of material with the scanning sensor at the dry end; d) developing a functional relationship between water weight of the sheet as measured by the array and the basis weight of the sheet which is formed after being substantially de-watered; end; and e) periodically, adjusting the functional relationship using readings from the scanning sensor to compensate for variations due to process parameters. The technique can further include the step of correlating positional readings of the scanning sensor with measurements from the corresponding element in the array to obtain separate calibration for each individual element of the array and step e comprises adjusting the functional relationship obtained in step d and the calibration obtained in to compensate for variations due to process parameters.

US Patent:

60802782, Jun 27, 2000

Filed:

Jan 27, 1998

Appl. No.:

9/013867

Inventors:

E. Michael Heaven - N. Vancouver, CA
Claud Hagart-Alexander - Vancouver, CA
Lee Chase - Los Gatos CA
John D. Goss - San Jose CA
David Watson - Etobicoke, CA

Assignee:

Honeywell-Measurex Corporation - Cupertino CA

International Classification:

D21F 1100

US Classification:

162198

Abstract:

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. The fast control information provided by the non-scanned water weight sensor can be used in a fast control loop which provides feedback information to wetstock source, headbox and forming elements and which can be used with a slower response control loop including a dry end sensor which provides a slower basis weight measurement and which controls system variables to compensate for larger basis weight fluctuations.