Patents by Inventor David O. Stalnaker

David O. Stalnaker 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: 11255755
    Abstract: A method of testing a tire is employed in an enclosed system having a drum enclosure connected to a tire enclosure by flexible bellows, the enclosed system configured such that a tire inside the tire enclosure abuts a drum inside the drum enclosure. The method includes rotating the drum at a first angular velocity, thereby causing the tire to rotate at the first angular velocity. The method further includes measuring a temperature at a first location adjacent the tire and blowing cool air into the tire enclosure when the measured temperature exceeds a predetermined temperature threshold. The method also includes measuring a humidity level at a second location and adding moisture in the tire enclosure when the measured humidity level falls below a predetermined humidity threshold.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: February 22, 2022
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Richard J. Macioce, Jr., Matthew J. Reda, David O. Stalnaker, Erik F. Knuth, Daniel M. Francis, Jr.
  • Publication number: 20210402832
    Abstract: A real time tire pressure sensing system includes sensors to collectively generate signals corresponding to a contained tire air temperature, a contained inflation pressure, and an ambient temperature associated with a tire mounted on a vehicle. A processor determines an effective tire inflation pressure based on the generated signals and further at least on a calculated moving average of the ambient temperature (e.g., over a defined time period such as 24 hours) and generates real time notifications associated with the determined effective tire inflation pressure to specified user interfaces. At least one sensor may be an inflation pressure sensor configured to generate event-based signals corresponding to detected changes per unit pressure. The processor may further generate real time feedback control signals to an automatic tire inflation device, based on the determined effective tire inflation pressure, or enable and prompt manual control of the tire inflation device via the user interface.
    Type: Application
    Filed: February 12, 2020
    Publication date: December 30, 2021
    Inventors: David O. Stalnaker, Robert Palmer, Kirk S. Rutherford, Cameron C. Martinez
  • Publication number: 20210364391
    Abstract: A method of testing a tire is employed in an enclosed system having a drum enclosure connected to a tire enclosure by flexible bellows, the enclosed system configured such that a tire inside the tire enclosure abuts a drum inside the drum enclosure. The method includes rotating the drum at a first angular velocity, thereby causing the tire to rotate at the first angular velocity. The method further includes measuring a temperature at a first location adjacent the tire and blowing cool air into the tire enclosure when the measured temperature exceeds a predetermined temperature threshold. The method also includes measuring a humidity level at a second location and adding moisture in the tire enclosure when the measured humidity level falls below a predetermined humidity threshold.
    Type: Application
    Filed: June 19, 2018
    Publication date: November 25, 2021
    Inventors: Richard J. Macioce, JR., Matthew J. Reda, David O. Stalnaker, Erik F. Knuth, Daniel M. Francis, JR.
  • Patent number: 10960716
    Abstract: A method includes obtaining simulated tire data for a simulated tire, simulated vehicle data for a simulated vehicle, and simulated test course data. The simulated tire data includes data to build a basic tire model. The simulated vehicle data includes data to build a basic vehicle model. The simulated test course data includes position-based course data in a horizontal plane and position-based course data in a vertical direction. The method further includes generating a tire load history from the basic tire model, the basic vehicle model, and the simulated test course data.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: March 30, 2021
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Ke Jun Xie, Erik F. Knuth, David O. Stalnaker, John L. Turner
  • Publication number: 20190219455
    Abstract: A tire having an indicator device that visually indicates exposure of the tire to a pre-selected temperature is provided, and an indicator device that may be positioned on a tire, for indicating that the tire has been exposed to a pre-selected temperature. The device includes expandable graphite dispersed within a pouch or binder. Also described is a method for detecting that a tire has been exposed to excessive temperature. The method includes providing a tire that includes at least one indicator device that contains a pouch or binder and expandable graphite dispersed in the pouch or binder. Visual inspection of the tire to detect a change in the appearance, shape, volume or texture of the indicator device can indicate that the tire has been exposed to a temperature that meets or exceeds a pre-selected temperature.
    Type: Application
    Filed: August 29, 2017
    Publication date: July 18, 2019
    Inventors: Wensheng Zhou, Francis J. Byrne, David O. Stalnaker, Robert Palmer
  • Publication number: 20180201077
    Abstract: A method includes obtaining simulated tire data for a simulated tire, simulated vehicle data for a simulated vehicle, and simulated test course data. The simulated tire data includes data to build a basic tire model. The simulated vehicle data includes data to build a basic vehicle model. The simulated test course data includes position-based course data in a horizontal plane and position-based course data in a vertical direction. The method further includes generating a tire load history from the basic tire model, the basic vehicle model, and the simulated test course data.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 19, 2018
    Inventors: Ke Jun Xie, Erik F. Knuth, David O. Stalnaker, John L. Turner
  • Patent number: 10024766
    Abstract: Various embodiments relate to methods, systems, devices, and non-transitory media for increasing repeatability and reliability of tire testing trials including one or more of the following: capturing position data from a position sensor, wherein the capture of the position data is indicative of alignment with the desired testing area along the first axis; determining whether the position data indicates that the testing wheel is aligned with the desired testing area along a second axis that is perpendicular to the first axis, and when the position data indicates that the testing wheel is aligned with the desired testing area along a second axis, effecting initiation of a testing event.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: July 17, 2018
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Sergio A. Botello, Jacob R. Kidney, Juan C. Dehoyos, Gregory A. Rasor, David O. Stalnaker
  • Publication number: 20170003199
    Abstract: Various embodiments relate to methods, systems, devices, and non-transitory media for increasing repeatability and reliability of tire testing trials including one or more of the following: capturing position data from a position sensor, wherein the capture of the position data is indicative of alignment with the desired testing area along the first axis; determining whether the position data indicates that the testing wheel is aligned with the desired testing area along a second axis that is perpendicular to the first axis, and when the position data indicates that the testing wheel is aligned with the desired testing area along a second axis, effecting initiation of a testing event.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 5, 2017
    Inventors: Sergio A. Botello, Jacob R. Kidney, Juan C. Dehoyos, Gregory A. Rasor, David O. Stalnaker
  • Patent number: 9428018
    Abstract: A method for reducing vehicle bias when testing a tire for use with a market segment of vehicles by creating a vehicle model that is scalable by vehicle weight. A market segment of vehicles is defined, at least one of a vehicle model parameter is defined, data is collected for the at least one vehicle model parameter from at least one vehicle in the market segment, the at least one vehicle model parameter is characterized through regression analysis as a function of total weight of a scalable vehicle model, the scalable vehicle model parameter is applied to a multibody vehicle dynamics simulation, at least one maneuver is applied to the scalable vehicle model, and the tire load histories generated by the multibody vehicle dynamics simulation are provided to a tire test machine to obtain tire wear data representative of the vehicles in the market segment.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: August 30, 2016
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: David O. Stalnaker, Ke Jun Xie, Erik F. Knuth, John L. Turner, Paul M. Neugebauer
  • Publication number: 20150057951
    Abstract: A method for reducing vehicle bias when testing a tire for use with a market segment of vehicles by creating a vehicle model that is scalable by vehicle weight. A market segment of vehicles is defined, at least one of a vehicle model parameter is defined, data is collected for the at least one vehicle model parameter from at least one vehicle in the market segment, the at least one vehicle model parameter is characterized through regression analysis as a function of total weight of a scalable vehicle model, the scalable vehicle model parameter is applied to a multibody vehicle dynamics simulation, at least one maneuver is applied to the scalable vehicle model, and the tire load histories generated by the multibody vehicle dynamics simulation are provided to a tire test machine to obtain tire wear data representative of the vehicles in the market segment.
    Type: Application
    Filed: October 31, 2014
    Publication date: February 26, 2015
    Inventors: David O. Stalnaker, Ke Jun Xie, Erik F. Knuth, John L. Turner, Paul M. Neugebauer
  • Publication number: 20140188406
    Abstract: Tire testing systems and methods are disclosed for indoor simulation testing of tires of a wide range of sizes on a scalable vehicle model (“SVM”).
    Type: Application
    Filed: October 2, 2013
    Publication date: July 3, 2014
    Applicant: Bridgestone Americas Tire Operations, LLC
    Inventors: David O. Stalnaker, Ke Jun Xie, Erik F. Knuth, John L. Turner, Paul M. Neugebauer
  • Patent number: 8555698
    Abstract: A method of fabricating a substantially rigid hardened wear surface for a tire tread wear testing apparatus is provided, the method comprising making a cast of a road surface on which tread wear of the tire is to be tested, providing a layer of adhesive mixed with at least one aggregate and configured for hardening to create the substantially rigid hardened wear surface, while the layer of adhesive is unhardened: (a) coating the layer of adhesive onto a road wheel of the tire tread wear testing apparatus, and (b) stamping an impression of the cast into the layer of epoxy adhesive for producing the wear surface adapted for emulating one or more surface roughness characteristics of the road surface.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: October 15, 2013
    Assignees: Bridgestone Americas Tire Operations, LLC, Bridgestone Corporation
    Inventors: Paul M. Neugebauer, Erik Knuth, David O. Stalnaker, Craig K. McClung, Alleva Lorenzo, Kurata Takayuki, Yukitake Kosuke, Hiroshi Egami, Alberto del Grosso
  • Patent number: 8347703
    Abstract: A tire testing apparatus that includes a test drum and at least one tire station. The test drum has an outer radial surface and a plurality of sectioned plates having outer radial test surfaces, wherein the plurality of sectioned plates mount on the outer radial surface of the test drum. The tire testing apparatus further includes at least one tire station having a selected tire with a tread, wherein the tread of the selected tire presses against the outer radial test surface of the plurality of sectional plates, and wherein the at least one tire station applies a force against the tread of the selected tire. Further, a tire testing method includes providing a selected tire having a circumferential tread and moving the selected tire against a rotating test drum having a plurality of sectional plates having a test surface.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: January 8, 2013
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Martin A. Yurjevich, David O. Stalnaker
  • Patent number: 8276441
    Abstract: A tire testing apparatus that includes a test drum and at least one tire station. The test drum has an outer radial surface and a plurality of sectioned plates having outer radial test surfaces, wherein the plurality of sectioned plates mount on the outer radial surface of the test drum. The tire testing apparatus further includes at least one tire station having a selected tire with a tread, wherein the tread of the selected tire presses against the outer radial test surface of the plurality of sectional plates, and wherein the at least one tire station applies a force against the tread of the selected tire. Further, a tire testing method includes providing a selected tire having a circumferential tread and moving the selected tire against a rotating test drum having a plurality of sectional plates having a test surface.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: October 2, 2012
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Martin A. Yurjevich, David O. Stalnaker
  • Publication number: 20120186324
    Abstract: A method of fabricating a substantially rigid hardened wear surface for a tire tread wear testing apparatus is provided, the method comprising making a cast of a road surface on which tread wear of the tire is to be tested, providing a layer of adhesive mixed with at least one aggregate and configured for hardening to create the substantially rigid hardened wear surface, while the layer of adhesive is unhardened: (a) coating the layer of adhesive onto a road wheel of the tire tread wear testing apparatus, and (b) stamping an impression of the cast into the layer of epoxy adhesive for producing the wear surface adapted for emulating one or more surface roughness characteristics of the road surface.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Applicants: Bridgestone Americas Tire Operations, LLC, Bridgestone Corporation
    Inventors: Paul Neugebauer, Erik Knuth, David O. Stalnaker, Craig K. McClung, Alleva Lorenzo, Kurata Takyuki, Yukitake Kosuke, Hiroshi Egami, Alberto DelGrosso
  • Patent number: 8196462
    Abstract: A method of tire testing comprising applying a drive torque to a tire and a wheel assembly about an axis of rotation to drive the tire and wheel assembly and a rotatable drum with the tire in rolling contact with the rotatable drum; controlling a load pressure of the tire against the rotatable drum; and adjusting a lateral position of the tire across a surface of the rotatable drum.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: June 12, 2012
    Assignees: Bridgestone Americas Tire Operations, LLC, Bridgestone Corporation
    Inventors: David O. Stalnaker, Takayuki Kurata
  • Publication number: 20110011170
    Abstract: A method of tire testing comprising applying a drive torque to a tire and a wheel assembly about an axis of rotation to drive the tire and wheel assembly and a rotatable drum with the tire in rolling contact with the rotatable drum; controlling a load pressure of the tire against the rotatable drum; and adjusting a lateral position of the tire across a surface of the rotatable drum.
    Type: Application
    Filed: June 26, 2008
    Publication date: January 20, 2011
    Applicants: BRIDGESTONE/FIRESTONE NORTH AMERICAN TIRE, LLC, BRIDGESTONE CORPORATION
    Inventors: David O. Stalnaker, Takayuki Kurata
  • Patent number: 7228732
    Abstract: A method of developing a set of input forces used to analyze tire wear includes the steps of characterizing a wear course by driving a vehicle over the wear course and measuring data related to a plurality of forces experienced by the vehicle. A vehicle characterization model for a target vehicle having at least one tire is developed. The vehicle characterization model is used to calculate force data that represents the forces that would be experienced by at least one tire of the characterized vehicle if the characterized vehicle were driven over the characterized wear test course in the first vehicle configuration. The force data is then used to analyze tire wear using a computer prediction technique or by running an indoor wear test on the tire.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 12, 2007
    Assignee: Bridgestone Firestone North American Tire, LLC
    Inventors: John L. Turner, David O. Stalnaker, James D. Ulmer, Erik F. Knuth
  • Patent number: 6804998
    Abstract: A method for indoor wear testing tires includes the steps of characterizing a vehicle and a wear test course and combining the characterized data to create input data for an indoor wear test machine. The input data allows the indoor wear test machine to accurately simulate an outdoor wear test course for the characterized vehicle. The method allows multiple wear test courses to be used with a single characterized vehicle and allows a single wear test course to be used with multiple characterized vehicles. The method allows tires to be wear tested in relatively short time periods in the controlled environment of the indoor laboratory. In addition, the method is relatively easy to set up and perform.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: October 19, 2004
    Assignee: Bridgestone/Firestone North American Tire, LLC
    Inventors: John L. Turner, David O. Stalnaker
  • Patent number: 6545750
    Abstract: A system (10) for measuring the dynamic orientation of the plane of a wheel (12) on a vehicle (14). The system (10) includes a test surface (16) which rotates with the wheel (12) and a orientation-determining device (18) which is unattached to the vehicle (14). The test surface (16) is positioned in a plane corresponding to the plane of the wheel (12) and the orientation-determining device (18) determines the orientation of the plane of the test surface (12) at a specific point of time while the vehicle is being driven. A processor (20) receives output signals from the orientation-determining device (18) and converts the output signals into data corresponding to the orientation of the wheel plane for the specific instant in time.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: April 8, 2003
    Assignee: Bridgestone/Firestone North American Tire, LLC
    Inventors: Vladimir Roth, David O. Stalnaker, Stanley J. Olesky, John L. Turner