Patents by Inventor Christopher George Larsen

Christopher George Larsen 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).

  • Patent number: 10788348
    Abstract: A method and apparatus for a flowmeter (5) is provided. The method comprises the steps of placing a material in a flow tube (130, 130?) while exciting a vibration mode of the flow tube (130, 130?). Exciting the vibration mode of the flow tube (130, 130?) comprises the steps of periodically driving a first driver (180L) with a first signal and periodically driving a second driver (180R) with a second signal, wherein the second driver (180R) is driven essentially in phase with the first driver (180L), but wherein the first driver's (180L) drive amplitude modulated signal reaches a maximum amplitude when the second driver's (180R) drive modulated signal reaches a minimal amplitude, and the first driver's (180L) drive amplitude modulated signal reaches a minimum amplitude when the second driver's (180R) drive amplitude modulated signal reaches a maximum amplitude.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: September 29, 2020
    Assignee: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J. Cunningham, Stuart J. Shelley
  • Publication number: 20200264024
    Abstract: A vibratory meter (5, 1600) configured to predict and reduce noise in the vibratory meter (5, 1600). The vibratory meter (5, 1600) includes a sensor assembly (10, 1610) and a meter electronics (20, 1620) in communication with the sensor assembly (10, 1610). The meter electronics (20, 1620) is configured to provide a drive signal to a sensor assembly (10, 1610), receive a sensor signal from the sensor assembly (10, 1610) having one or more components, and generate a signal to be applied to one of the sensor signal and the drive signal to compensate for the one or more components.
    Type: Application
    Filed: September 21, 2017
    Publication date: August 20, 2020
    Applicant: Micro Motion, Inc.
    Inventors: Matthew Joseph RENSING, Christopher George LARSEN
  • Publication number: 20200132529
    Abstract: A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) configured to vibrate the flowmeter assembly (10) in a primary vibration mode using the first and second drivers (180L, 180R), determine first and second primary triode currents (230) of the first and second drivers (180L, 180R) for the primary vibration mode and determining first and second primary mode response voltages (231) generated by the first and second pickoff sensors (170L, 170R) for the primary vibration mode, generate a meter stiffness value (216) using the first and second primary mode currents (230) and the first and second primary mode response voltages (231), and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216).
    Type: Application
    Filed: January 2, 2020
    Publication date: April 30, 2020
    Applicant: Micro Motion, Inc.
    Inventors: Matthew Joseph RENSING, Christopher George LARSEN, Timothy J. CUNNINGHAM
  • Patent number: 10612954
    Abstract: A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) configured to vibrate the flowmeter assembly (10) in a primary vibration mode using the first and second drivers (180L, 180R), determine first and second primary mode currents (230) of the first and second drivers (180L, 180R) for the primary vibration mode and determining first and second primary mode response voltages (231) generated by the first and second pickoff sensors (170L, 170R) for the primary vibration mode, generate a meter stiffness value (216) using the first and second primary mode currents (230) and the first and second primary mode response voltages (231), and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216).
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: April 7, 2020
    Assignee: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J Cunningham
  • Patent number: 10605647
    Abstract: A meter verification method for a vibratory flowmeter (5) is provided, comprising vibrating a sensor assembly (10) of the vibratory flowmeter (5) with a plurality of test tones in a vibration mode using a driver (180), wherein the plurality of test tones is applied substantially instantly, in the absence of a ramp function. A driver (180) current is determined, and response voltage of pickoff sensors (170L, 170R) are determined for the vibration mode. The instantaneous frequency of the pickoff sensor (170L, 170R) signals is measured, and a filter is applied to isolate the response at each of the plurality of test tones. The filter is also applied to the instantaneous frequency measurements. The same delay is applied to the frequency measurements and the response at each of the test tones. A meter stiffness value (216) is generated using the current (230) and the response voltage (231), and proper operation of the vibratory flowmeter (5) is verified using the meter stiffness value (216).
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: March 31, 2020
    Assignee: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J. Cunningham
  • Publication number: 20180266864
    Abstract: A method and apparatus for a flowmeter (5) is provided. The method comprises the steps of placing a material in a flow tube (130, 130?) while exciting a vibration mode of the flow tube (130, 130?). Exciting the vibration mode of the flow tube (130, 130?) comprises the steps of periodically driving a first driver (180L) with a first signal and periodically driving a second driver (180R) with a second signal, wherein the second driver (180R) is driven essentially in phase with the first driver (180L), but wherein the first driver's (180L) drive amplitude modulated signal reaches a maximum amplitude when the second driver's (180R) drive modulated signal reaches a minimal amplitude, and the first driver's (180L) drive amplitude modulated signal reaches a minimum amplitude when the second driver's (180R) drive amplitude modulated signal reaches a maximum amplitude.
    Type: Application
    Filed: July 27, 2015
    Publication date: September 20, 2018
    Applicant: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J. Cunningham, Stuart J. Shelley
  • Publication number: 20180216987
    Abstract: A meter verification method for a vibratory flowmeter (5) is provided, comprising vibrating a sensor assembly (10) of the vibratory flowmeter (5) with a plurality of test tones in a vibration mode using a driver (180), wherein the plurality of test tones is applied substantially instantly, in the absence of a ramp function. A driver (180) current is determined, and response voltage of pickoff sensors (170L, 170R) are determined for the vibration mode. The instantaneous frequency of the pickoff sensor (170L, 170R) signals is measured, and a filter is applied to isolate the response at each of the plurality of test tones. The filter is also applied to the instantaneous frequency measurements. The same delay is applied to the frequency measurements and the response at each of the test tones. A meter stiffness value (216) is generated using the current (230) and the response voltage (231), and proper operation of the vibratory flowmeter (5) is verified using the meter stiffness value (216).
    Type: Application
    Filed: July 27, 2015
    Publication date: August 2, 2018
    Applicant: Micro Motion, Inc.
    Inventors: Matthew Joseph RENSING, Christopher George LARSEN, Timothy J. CUNNINGHAM
  • Patent number: 9851242
    Abstract: A combined driver and pick-off sensor component (200, 300) for a vibrating meter is provided. The combined driver and pick-off sensor component (200, 300) includes a magnet portion (104B) with at least a first magnet (211). The combined driver and pick-off sensor component (200, 300) further includes a coil portion (204A, 304A) receiving at least a portion of the first magnet (211). The coil portion (204A, 304A) includes a coil bobbin (220), a driver wire (221) wound around the coil bobbin (220), and a pick-off wire (222) wound around the coil bobbin (220).
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 26, 2017
    Assignee: Micro Motion, Inc.
    Inventors: Christopher George Larsen, Matthew Joseph Rensing, Amy Mai Nilsen, Roger Scott Loving
  • Publication number: 20160320227
    Abstract: A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) coupled to the first and second pickoff sensors (170L, 170R) and coupled to a driver (180), with the meter electronics (20) configured to: vibrate the flowmeter assembly (10) in a single mode using the driver (180), determine a single mode current (230) of the driver (180) and determine first and second response voltages (231) generated by the first and second pickoff sensors (170L, 170R), respectively, compute frequency response functions for the determined first and second response voltages (231) from the determined single mode current (230), fit the generated frequency response functions to a pole-residue model, and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216), residual flexibility (218), and the meter mass (240) in embodiments.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 3, 2016
    Applicant: Micro Motion, Inc.
    Inventors: Timothy J Cunningham, David J Kapolnek, Matthew J Rensing, Christopher George Larsen
  • Publication number: 20160116319
    Abstract: A vibratory flowmeter (5) for meter verification is provided, including meter electronics (20) configured to vibrate the flowmeter assembly (10) in a primary vibration mode using the first and second drivers (180L, 180R), determine first and second primary mode currents (230) of the first and second drivers (180L, 180R) for the primary vibration mode and determining first and second primary mode response voltages (231) generated by the first and second pickoff sensors (170L, 170R) for the primary vibration mode, generate a meter stiffness value (216) using the first and second primary mode currents (230) and the first and second primary mode response voltages (231), and verify proper operation of the vibratory flowmeter (5) using the meter stiffness value (216).
    Type: Application
    Filed: May 20, 2014
    Publication date: April 28, 2016
    Applicant: Micro Motion, Inc.
    Inventors: Matthew Joseph Rensing, Christopher George Larsen, Timothy J Cunningham
  • Patent number: 9182306
    Abstract: Systems and methods for measuring environmental conditions of a sensing location, where a sensor including a measuring surface and a wire coupled in tension to the measuring surface over which ultrasonic signals may be transmitted and sensed. Signal analysis of ultrasonic signals transmitted over the tensioned wire are analyzed to measure one or more environmental conditions acting on the measuring surface.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: November 10, 2015
    Assignee: Etegent Technologies, Ltd.
    Inventors: Richard Allan Roth, II, Christopher George Larsen, Stuart James Shelley, Logan Alexander Niehaus
  • Patent number: 9048521
    Abstract: A broadband waveguide incorporates various reflection suppression techniques to reduce reflections in signals communicated thereby. The waveguide includes one or more filaments that each include a first and second end. A first matrix may be configured proximate the first end(s) while a second matrix may be configured proximate an intermediate location between the first and second ends. A damping material may cover a portion of the filament(s) that extends from the second matrix to the second end(s) (including the second end(s) themselves) and/or the second end(s) of the filament(s) is/are shaped to at least partially suppress reflections of the signal therefrom. When configured with multiple filaments, at least two of the filaments may have differing lengths that extend from the second matrix and also operate to at least partially suppress reflections of a signal.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: June 2, 2015
    Assignee: Etegent Technologies, Ltd.
    Inventors: Christopher George Larsen, Richard Allan Roth, II, Stuart James Shelley, Aaron Collins Hacker, Adam Jacob Hehr
  • Publication number: 20140238140
    Abstract: A combined driver and pick-off sensor component (200, 300) for a vibrating meter is provided. The combined driver and pick-off sensor component (200, 300) includes a magnet portion (104B) with at least a first magnet (211). The combined driver and pick-off sensor component (200, 300) further includes a coil portion (204A, 304A) receiving at least a portion of the first magnet (211). The coil portion (204A, 304A) includes a coil bobbin (220), a driver wire (221) wound around the coil bobbin (220), and a pick-off wire (222) wound around the coil bobbin (220).
    Type: Application
    Filed: October 26, 2011
    Publication date: August 28, 2014
    Applicant: Micro Motion, Inc.
    Inventors: Christopher George Larsen, Matthew Joseph Rensing, Amy Mai Nilsen, Roger Scott Loving
  • Publication number: 20120325018
    Abstract: Systems and methods for measuring environmental conditions of a sensing location, where a sensor including a measuring surface and a wire coupled in tension to the measuring surface over which ultrasonic signals may be transmitted and sensed. Signal analysis of ultrasonic signals transmitted over the tensioned wire are analyzed to measure one or more environmental conditions acting on the measuring surface.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 27, 2012
    Applicant: ETEGENT TECHNOLOGIES LTD.
    Inventors: Richard Allan Roth, II, Christopher George Larsen, Stuart James Shelley, Logan Alexander Niehaus
  • Publication number: 20120242426
    Abstract: A broadband waveguide incorporates various reflection suppression techniques to reduce reflections in signals communicated thereby. The waveguide includes one or more filaments that each include a first and second end. A first matrix may be configured proximate the first end(s) while a second matrix may be configured proximate an intermediate location between the first and second ends. A damping material may cover a portion of the filament(s) that extends from the second matrix to the second end(s) (including the second end(s) themselves) and/or the second end(s) of the filament(s) is/are shaped to at least partially suppress reflections of the signal therefrom. When configured with multiple filaments, at least two of the filaments may have differing lengths that extend from the second matrix and also operate to at least partially suppress reflections of a signal.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 27, 2012
    Applicant: ETEGENT TECHNOLOGIES LTD.
    Inventors: Christopher George Larsen, Richard Allan Roth, II, Stuart James Shelley, Aaron Collins Hacker, Adam Jacob Hehr