Patents by Inventor Craig M. Wall
Craig M. Wall 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: 10830668Abstract: An engine vibration imager and method of testing engine stability. An accelerometer, mounted to an engine block, is configured to detect engine vibration and generate a signal indicative of detected vibration. An amplifier, electrically coupled to the accelerometer, is configured to amplify the signal indicative of detected vibration. A light indicator, electrically coupled to the amplifier, is configured to emit light upon receiving the amplified signal. The engine vibration imager also includes an indicator disk including timing marks on a first surface of the indicator disk. The indicator disk is rotatable by the crankshaft and light emitted from the light indicator is visible at the first surface of the indicator disk and indicates on the indicator disk a point in the combustion cycle in which engine vibration is detected.Type: GrantFiled: May 8, 2017Date of Patent: November 10, 2020Assignee: SOUTHWEST RESEARCH INSTITUTEInventors: Craig M. Wall, Peter M. Lee
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Patent number: 10190717Abstract: A method of damping pulsations produced by an engine or other driver, so that gas flow can more accurately be measured by a gas flow meter. A damping device is placed between the driver and the flow meter, and has an enclosed volume, an input tube, and an output tube. Particular dimensions of the damping device, namely the volume of the chamber and the diameter and length of the input tube, are calculated to result in a desired damping efficiency.Type: GrantFiled: August 29, 2017Date of Patent: January 29, 2019Assignee: SOUTHWEST RESEARCH INSTITUTEInventors: Craig M. Wall, Peter M. Lee, Nicholas J. Mueschke
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Publication number: 20180321112Abstract: An engine vibration imager and method of testing engine stability. An accelerometer, mounted to an engine block, is configured to detect engine vibration and generate a signal indicative of detected vibration. An amplifier, electrically coupled to the accelerometer, is configured to amplify the signal indicative of detected vibration. A light indicator, electrically coupled to the amplifier, is configured to emit light upon receiving the amplified signal. The engine vibration imager also includes an indicator disk including timing marks on a first surface of the indicator disk. The indicator disk is rotatable by the crankshaft and light emitted from the light indicator is visible at the first surface of the indicator disk and indicates on the indicator disk a point in the combustion cycle in which engine vibration is detected.Type: ApplicationFiled: May 8, 2017Publication date: November 8, 2018Inventors: Craig M. WALL, Peter M. LEE
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Patent number: 9660299Abstract: A method and system for strain-based estimation of the state of health of a battery, from an initial state to an aged state, is provided. A strain gauge is applied to the battery. A first strain measurement is performed on the battery, using the strain gauge, at a selected charge capacity of the battery and at the initial state of the battery. A second strain measurement is performed on the battery, using the strain gauge, at the selected charge capacity of the battery and at the aged state of the battery. The capacity degradation of the battery is estimated as the difference between the first and second strain measurements divided by the first strain measurement.Type: GrantFiled: December 10, 2013Date of Patent: May 23, 2017Assignee: SOUTHWEST RESEARCH INSTITUTEInventors: Jeff Qiang Xu, Joe Steiber, Craig M. Wall, Robert Smith, Cheuk Ng
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Publication number: 20150160302Abstract: A method and system for strain-based estimation of the state of health of a battery, from an initial state to an aged state, is provided. A strain gauge is applied to the battery. A first strain measurement is performed on the battery, using the strain gauge, at a selected charge capacity of the battery and at the initial state of the battery. A second strain measurement is performed on the battery, using the strain gauge, at the selected charge capacity of the battery and at the aged state of the battery. The capacity degradation of the battery is estimated as the difference between the first and second strain measurements divided by the first strain measurement.Type: ApplicationFiled: December 10, 2013Publication date: June 11, 2015Inventors: Jeff Qiang XU, Joe STEIBER, Craig M. WALL, Robert SMITH, Cheuk NG
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Patent number: 8050489Abstract: Methods and systems for the differential wear mapping of the surface of an object are described. The process involves establishing a radioactive wearing surface on the object through surface layer activation (SLA) and/or radioactive ion implantation (RII) and imaging the wearing surface with conformal photographic or x-ray film to produce a first autoradiograph providing a baseline profile of the wearing surface. After subjecting the object to wear during testing the wearing surface is again imaged with conformal photographic or x-ray film to produce a second autoradiograph providing a worn profile. The first and second autoradiographs of the wearing surface are digitized and compared to produce a differential wear map of the surface of the object.Type: GrantFiled: July 20, 2007Date of Patent: November 1, 2011Assignee: Southwest Research InstituteInventors: Douglas C. Eberle, Craig M. Wall, Martin B. Treuhaft
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Publication number: 20080019582Abstract: Methods and systems for the differential wear mapping of the surface of an object are described. The process involves establishing a radioactive wearing surface on the object through surface layer activation (SLA) and/or radioactive ion implantation (RII) and imaging the wearing surface with conformal photographic or x-ray film to produce a first autoradiograph providing a baseline profile of the wearing surface. After subjecting the object to wear during testing the wearing surface is again imaged with conformal photographic or x-ray film to produce a second autoradiograph providing a worn profile. The first and second autoradiographs of the wearing surface are digitized and compared to produce a differential wear map of the surface of the object.Type: ApplicationFiled: July 20, 2007Publication date: January 24, 2008Inventors: Douglas C. Eberle, Craig M. Wall, Martin B. Treuhaft
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Patent number: 6756141Abstract: A fuel cell includes an anode electrode, a cathode electrode, and a third electrode interposed between the anode and the cathode electrodes. The third electrode preferably includes an electrically conductive component. The third electrode preferably includes a metallic and a polymer grid and/or a conducting polymer. The third electrode may be used to control processes of the anode and/or the cathode electrodes. The third electrode may also be used to monitor the health of any component of the fuel cell.Type: GrantFiled: December 28, 2001Date of Patent: June 29, 2004Assignee: Southwest Research InstituteInventors: Michael A. Miller, Craig M. Wall
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Publication number: 20030022032Abstract: A fuel cell includes an anode electrode, a cathode electrode, and a third electrode interposed between the anode and the cathode electrodes. The third electrode preferably includes an electrically conductive component. The third electrode preferably includes a metallic and a polymer grid and/or a conducting polymer. The third electrode may be used to control processes of the anode and/or the cathode electrodes. The third electrode may also be used to monitor the health of any component of the fuel cell.Type: ApplicationFiled: December 28, 2001Publication date: January 30, 2003Applicant: SOUTHWEST RESEARCH INSTITUTEInventors: Michael A. Miller, Craig M. Wall