Acoustic resonance chamber

Kolb, Lowell; Tolle, Charles; Williams, Nathan; Ash, Jason

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Title: Acoustic resonance chamber

Abstract

A system for determining gas characteristics at high altitudes in embodiments of the present invention may have one or more of the following features: (a) a high-altitude balloon having one or more of the following features: (a) a balloon, (b) a balloonsat operably coupled to the balloon, (c) an air path chamber wherein gas at a high altitude can occupy the air path chamber, (d) a first speaker located on a substrate within the air path chamber, wherein the first speaker takes an electrical signal input and creates a first sound wave, and (e) a second speaker located on the substrate facing opposite of the first speaker located outside of the air path chamber, wherein the second speaker takes the electrical signal and creates a second sound wave.

Inventors:: Kolb, Lowell; Tolle, Charles; Williams, Nathan; Ash, Jason

Issue Date:: 2023-10-24

Research Org.:: Univ. of South Dakota, Vermillion, SD (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 2293761

Patent Number(s):: 11796510

Application Number:: 17/246,093

Assignee:: South Dakota Board of Regents (Pierre, SD)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Show more

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2291/011 - Velocity or travel time
G01N2291/014 - Resonance or resonant frequency
G01N2291/021 - Gases
G01N2291/02881 - Temperature
G01N2291/102 - one emitter, one receiver
G01N29/024 - by measuring propagation velocity or propagation time of acoustic waves
G01N29/036 - by measuring frequency or resonance of acoustic waves
G01N29/222 - {Constructional or flow details for analysing fluids
G01N29/2437 - {Piezoelectric probes}

Show less

DOE Contract Number:: NNX10AL27H

Resource Type:: Patent

Resource Relation:: Patent File Date: 04/30/2021

Country of Publication:: United States

Language:: English

Citation Formats


                    Kolb, Lowell, Tolle, Charles, Williams, Nathan, and Ash, Jason. Acoustic resonance chamber.  United States: N. p., 2023. 
        Web.

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                    Kolb, Lowell, Tolle, Charles, Williams, Nathan, & Ash, Jason. Acoustic resonance chamber.  United States.

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                    Kolb, Lowell, Tolle, Charles, Williams, Nathan, and Ash, Jason. Tue .  
        "Acoustic resonance chamber".  United States.  https://www.osti.gov/servlets/purl/2293761.

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@article{osti_2293761,

  title        = {Acoustic resonance chamber},

  author       = {Kolb, Lowell and Tolle, Charles and Williams, Nathan and Ash, Jason},

  abstractNote = {A system for determining gas characteristics at high altitudes in embodiments of the present invention may have one or more of the following features: (a) a high-altitude balloon having one or more of the following features: (a) a balloon, (b) a balloonsat operably coupled to the balloon, (c) an air path chamber wherein gas at a high altitude can occupy the air path chamber, (d) a first speaker located on a substrate within the air path chamber, wherein the first speaker takes an electrical signal input and creates a first sound wave, and (e) a second speaker located on the substrate facing opposite of the first speaker located outside of the air path chamber, wherein the second speaker takes the electrical signal and creates a second sound wave.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2023},

  month        = {10}

}

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Works referenced in this record:

Method and means for measuring temperature using acoustical resonators
patent, November 1980

Thompson, John H.; Gannon, Jr., George F.; Geil, Fred G.
US Patent Document 4,233,843
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4233843

Calibration of Seismic Streamers in a Helmholz Resonator
patent, May 1993

Bjelland, Cato; Langeland, Jan-Age
US Patent Document 5,210,718
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5210718

Temperature Measuring Apparatus
patent, November 1965

Miller, Park H.
US Patent Document 3,214,976
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3214976

Estimating combustor flame temperature based on frequency of combustor dynamics transverse mode
patent, December 2005

Mick, Warren James; Gleeson, Eamon; Ziminsky, Willy Steve
US Patent Document 6,979,118
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6979118

Photoacoustic device and process for multi-gas sensing
patent, August 1999

Wood, R. Andrew; Rezachek, Thomas M.; Hegel, Rudy R.
US Patent Document 5,933,245
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5933245

Method for Determining the Temperature Inside a Combustor
patent-application, April 2015

Schuermans, Bruno; Wassmer, Dominik
US Patent Application 14/496361; 20150089950
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20150089950

Apparatus and methods for performing acoustical measurements
patent, February 2001

Logue, Raymond C.; Sirota, Don N.; Lee, Patrick S.
US Patent Document 6,192,739
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6192739

Resonant cavity gas density sensor
patent, February 1995

Dames, Andrew
US Patent Document 5,386,714
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5386714

Measuring the speed of sound of a gas
patent, November 2002

Humphrey, Francis Alan; Byrne, David; Price, Barry Leonard
US Patent Document 6,481,288
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6481288

Aeroacoustic gas composition monitor
patent, May 1993

Shakkottai, Parthasarathy; Kwack, Eug Y.
US Patent Document 5,211,052
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5211052

Acoustic natural gas fuel sensor
patent, July 1996

Phillips, Scott; Lueptow, Richard M.
US Patent Document 5,537,854
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5537854

Method of measurement of bulk temperatures of gas in engine cylinders
patent, August 1979

Hickling, Robert; Hamburg, James A.; Feldmaier, Douglas A.
US Patent Document 4,164,867
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4164867

Meteorological Apparatus
patent, March 1960

Cavanagh, Robert Terrance; Deichert, Roibert William
US Patent Document 2928277
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/2928277

Method and system for measuring temperatures in combustion chambers
patent, March 1982

Tewes, Giesbert; Schmidt-Traub, Henner
US Patent Document 4,317,366
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4317366

Photoacoustic gas analyzer
patent, April 1989

Nexo, Sten A.; Christensen, Jorgen; Jorgensen, Ib
US Patent Document 4,818,882
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4818882

Borehole acoustic transmitter
patent, January 1990

Medlin, William L.; King, Gary
US Patent Document 4,890,687
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4890687

Detection means for the selective detection of gases, based on optical spectroscopy
patent, December 1985

Oehler, Oskar; Fries, Alexis
US Patent Document 4,557,603
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4557603

Apparatus for the photoacoustic detection of gases
patent, April 1988

Oehler, Oskar; Mosbach, Klaus; Seifert, Martin
US Patent Document 4,740,086
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4740086

Self-calibrating Sensor
patent-application, November 2008

Bonne, Ulrich; Tobias, Peter; Padmanabhan, Aravind
US Patent Application 11/803968; 20080282765
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080282765

Sonic gas pressure gauge
patent, September 1989

Tittmann, Bernhard R.; Richardson, John M.; Bulau, James R.
US Patent Document 4,869,097
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4869097

Method and apparatus for measuring acoustic parameters in liquids using cylindrical ultrasonic standing waves
patent, July 1996

Sarvazyan, Armen P.; Ponomarev, Viktor
US Patent Document 5,533,402
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5533402

Acoustic resonance phase locked photoacoustic spectrometer
patent, August 2003

Pilgrim, Jeffrey S.; Bomse, David S.; Silver, Joel A.
US Patent Document 6,608,683
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6608683

Temperature Sensor
patent, May 1967

Thompson, John H.; Skinner, Dale D.; Whittaker, Robert H.
US Patent Document 3318152
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3318152

Photo-acoustic detector
patent, September 1989

Fertig, Glenn H.
US Patent Document 4,866,681
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4866681

Programmable diffraction grating sensor
patent, February 2005

Hocker, G. Benjamin
US Patent Document 6,853,449
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6853449

Method and device in acoustic flow measurement for ensuring the operability of said measurement
patent, June 1995

Mayranen, Tarmo; Koukkari, Sauli
US Patent Document 5,421,212
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5421212

System and Method for Gas Analysis using Photoacoustic Spectroscopy
patent-application, January 2008

Riddle, Alfred
US Patent Application 11/485129; 20080011055
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080011055

Apparatus and method for characterizing semiconductor wafers during processing
patent, December 1999

Stanke, Fred E.; Khuri-Yakub, Butrus T.; Pham, Hung
US Patent Document 5,996,415
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5996415

Method for using sonic gas-fueled internal combustion engine control system
patent, December 1997

Beck, Niels J.
US Patent Document 5,697,346
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5697346

Apparatus and method for using the speed of sound in photoacoustic gas sensor measurements
patent, November 2012

Tobias, Peter
US Patent Document 8,312,758
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8312758

Method of and apparatus for measuring the molecular weight of a gas
patent, October 2016

Downie, Neil Alexander
US Patent Document 9,459,191
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/9459191

Method and apparatus for monitoring the content of binary gas mixtures
patent, October 1991

Douglas, David W.
US Patent Document 5,060,506
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5060506

Method and apparatus for fluid mixture monitoring, constituent analysis, and composition control
patent, October 1991

Urmson, John; Pearson, Anthony; Gidwani, Sanjay M.
US Patent Document 5,060,507
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5060507

Acoustic analysis of gas mixtures
patent, February 1995

Cadet, Gardy; Valdes, Jorge
US Patent Document 5,392,635
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5392635

Acoustic Wave Device used as RFID and as Sensor
patent-application, June 2007

Liu, James Z. T.
US Patent Application 11/311724; 20070139165
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20070139165

Method and apparatus for optoacoustic spectroscopy
patent, August 1979

Amer, Nabil M.
US Patent Document 4,163,382
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4163382

Vibration type gas densitometer
patent, February 2000

Nishino, Hiroshi; Suzuki, Junichi; Yasuda, Shigeo
US Patent Document 6,029,501
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6029501

Method and apparatus for determining a frequency at which a resonator resonates
patent, November 2001

Humphrey, Francis Alan; Byrne, David; Price, Barry Leonard
US Patent Document 6,318,180
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6318180

Chlorine Dioxide Sensor
patent-application, March 2007

Krafthefer, Brian C.; Rhodes, Michael L.; Gu, Yuandong
US Patent Application 11/465359; 2000070045128
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20070045128

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Similar Records

Title: Acoustic resonance chamber

Abstract

Citation Formats

Method and means for measuring temperature using acoustical resonators patent, November 1980

Calibration of Seismic Streamers in a Helmholz Resonator patent, May 1993

Temperature Measuring Apparatus patent, November 1965

Estimating combustor flame temperature based on frequency of combustor dynamics transverse mode patent, December 2005

Photoacoustic device and process for multi-gas sensing patent, August 1999

Method for Determining the Temperature Inside a Combustor patent-application, April 2015

Apparatus and methods for performing acoustical measurements patent, February 2001

Resonant cavity gas density sensor patent, February 1995

Measuring the speed of sound of a gas patent, November 2002

Aeroacoustic gas composition monitor patent, May 1993

Acoustic natural gas fuel sensor patent, July 1996

Method of measurement of bulk temperatures of gas in engine cylinders patent, August 1979

Meteorological Apparatus patent, March 1960

Method and system for measuring temperatures in combustion chambers patent, March 1982

Photoacoustic gas analyzer patent, April 1989

Borehole acoustic transmitter patent, January 1990

Detection means for the selective detection of gases, based on optical spectroscopy patent, December 1985

Apparatus for the photoacoustic detection of gases patent, April 1988

Self-calibrating Sensor patent-application, November 2008

Sonic gas pressure gauge patent, September 1989

Method and apparatus for measuring acoustic parameters in liquids using cylindrical ultrasonic standing waves patent, July 1996

Acoustic resonance phase locked photoacoustic spectrometer patent, August 2003

Temperature Sensor patent, May 1967

Photo-acoustic detector patent, September 1989

Programmable diffraction grating sensor patent, February 2005

Method and device in acoustic flow measurement for ensuring the operability of said measurement patent, June 1995

System and Method for Gas Analysis using Photoacoustic Spectroscopy patent-application, January 2008

Apparatus and method for characterizing semiconductor wafers during processing patent, December 1999

Method for using sonic gas-fueled internal combustion engine control system patent, December 1997

Apparatus and method for using the speed of sound in photoacoustic gas sensor measurements patent, November 2012

Method of and apparatus for measuring the molecular weight of a gas patent, October 2016

Method and apparatus for monitoring the content of binary gas mixtures patent, October 1991

Method and apparatus for fluid mixture monitoring, constituent analysis, and composition control patent, October 1991

Acoustic analysis of gas mixtures patent, February 1995

Acoustic Wave Device used as RFID and as Sensor patent-application, June 2007

Method and apparatus for optoacoustic spectroscopy patent, August 1979

Vibration type gas densitometer patent, February 2000

Method and apparatus for determining a frequency at which a resonator resonates patent, November 2001

Chlorine Dioxide Sensor patent-application, March 2007

Method and means for measuring temperature using acoustical resonators
patent, November 1980

Calibration of Seismic Streamers in a Helmholz Resonator
patent, May 1993

Temperature Measuring Apparatus
patent, November 1965

Estimating combustor flame temperature based on frequency of combustor dynamics transverse mode
patent, December 2005

Photoacoustic device and process for multi-gas sensing
patent, August 1999

Method for Determining the Temperature Inside a Combustor
patent-application, April 2015

Apparatus and methods for performing acoustical measurements
patent, February 2001

Resonant cavity gas density sensor
patent, February 1995

Measuring the speed of sound of a gas
patent, November 2002

Aeroacoustic gas composition monitor
patent, May 1993

Acoustic natural gas fuel sensor
patent, July 1996

Method of measurement of bulk temperatures of gas in engine cylinders
patent, August 1979

Meteorological Apparatus
patent, March 1960

Method and system for measuring temperatures in combustion chambers
patent, March 1982

Photoacoustic gas analyzer
patent, April 1989

Borehole acoustic transmitter
patent, January 1990

Detection means for the selective detection of gases, based on optical spectroscopy
patent, December 1985

Apparatus for the photoacoustic detection of gases
patent, April 1988

Self-calibrating Sensor
patent-application, November 2008

Sonic gas pressure gauge
patent, September 1989

Method and apparatus for measuring acoustic parameters in liquids using cylindrical ultrasonic standing waves
patent, July 1996

Acoustic resonance phase locked photoacoustic spectrometer
patent, August 2003

Temperature Sensor
patent, May 1967

Photo-acoustic detector
patent, September 1989

Programmable diffraction grating sensor
patent, February 2005

Method and device in acoustic flow measurement for ensuring the operability of said measurement
patent, June 1995

System and Method for Gas Analysis using Photoacoustic Spectroscopy
patent-application, January 2008

Apparatus and method for characterizing semiconductor wafers during processing
patent, December 1999

Method for using sonic gas-fueled internal combustion engine control system
patent, December 1997

Apparatus and method for using the speed of sound in photoacoustic gas sensor measurements
patent, November 2012

Method of and apparatus for measuring the molecular weight of a gas
patent, October 2016

Method and apparatus for monitoring the content of binary gas mixtures
patent, October 1991

Method and apparatus for fluid mixture monitoring, constituent analysis, and composition control
patent, October 1991

Acoustic analysis of gas mixtures
patent, February 1995

Acoustic Wave Device used as RFID and as Sensor
patent-application, June 2007

Method and apparatus for optoacoustic spectroscopy
patent, August 1979

Vibration type gas densitometer
patent, February 2000

Method and apparatus for determining a frequency at which a resonator resonates
patent, November 2001

Chlorine Dioxide Sensor
patent-application, March 2007