Patents by Inventor Dong Fei

Dong Fei 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).

  • Publication number: 20130000407
    Abstract: An inspection system for integral seals includes an ultrasonic transducer configured to ultrasonically scan an integral seal having a rubber sealing member attached to a seal carrier, and a transducer positioning mechanism defining a plurality of translational degrees of freedom and a rotational degree of freedom. An electronic control unit is coupled with the ultrasonic transducer, and may be configured to store data indicative of a defect in the integral seal responsive to a reflection pattern defined by ultrasound reflected by the rubber sealing member and the seal carrier. Related methodology is also disclosed.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Applicant: CATERPILLAR, INC
    Inventors: Dong Fei, Douglas Rebinsky, Colm Flannery
  • Publication number: 20120318134
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Application
    Filed: August 27, 2012
    Publication date: December 20, 2012
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Patent number: 8250902
    Abstract: A system and method for measuring aeration of a liquid in a liquid channel operates by sending an ultrasonic wave into a liquid channel, receiving a signal corresponding to the echo from the liquid channel and calculating a level of aeration of the liquid in the liquid channel based on the reflected signal.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: August 28, 2012
    Assignee: Caterpillar Inc.
    Inventors: Mohamed I. Daoud, Dong Fei
  • Patent number: 8252093
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: August 28, 2012
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Publication number: 20100300557
    Abstract: A system and method for measuring aeration of a liquid in a liquid channel operates by sending an ultrasonic wave into a liquid channel, receiving a signal corresponding to the echo from the liquid channel and calculating a level of aeration of the liquid in the liquid channel based on the reflected signal.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 2, 2010
    Applicant: Caterpillar Inc.
    Inventors: Dong Fei, Mohamed I. Daoud
  • Patent number: 7837750
    Abstract: A method for cleaning a diesel particulate filter includes a step of coupling an acoustic generator directly to the diesel particulate filter via a support fixture. Ash deposited within the diesel particulate filter is dislodged with acoustic energy deposited by the acoustic generator. The ash may fall clear of the diesel particulate filter under the action of gravity and/or via pressurized air flow.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: November 23, 2010
    Assignee: Caterpillar Inc
    Inventors: Jade Katinas, Dong Fei, Jamie Frisch, Jeremy Trethewey, Douglas Rebinsky, Nan Yang
  • Patent number: 7805997
    Abstract: An on-machine inspection method for detecting whether a shaft of a transmission system has failed uses a test probe from flaw detection apparatus to discover echo signals with known peaks corresponding to defined weakened portions in the shaft. The test probe is then moved to prescribed angular distances about an end face of the shaft to obtain the echo signals.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: October 5, 2010
    Assignee: Caterpillar Inc
    Inventors: Linxiao Yu, Gary P. Shandley, Ginger Cunningham, Dong Fei, Douglas A. Rebinsky
  • Patent number: 7748256
    Abstract: A system for determining acceptability of torsional dampers for service in a machine system includes a fixture, an ultrasonic scanner and an indicating device configured to indicate at least one of acceptability and unacceptability of a torsional damper based upon receipt of a signal from the scanner. A nondestructive testing method for a torsional vibration damper includes scanning a torsional vibration damper with ultrasonic energy, and determining a test value for the damper indicative of a viscosity of fluid sealed within a housing of the damper based on receiving transmitted ultrasonic energy. Receipt of ultrasonic energy may be used to determine the flow rate of fluid within the damper by indicating a time for fluid to flow to fill a void within the damper. The system and method may be implemented in a remanufacturing or salvaging process for torsional vibration dampers.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: July 6, 2010
    Assignee: Caterpillar Inc.
    Inventors: Linxiao Yu, Douglas A. Rebinsky, Dong Fei
  • Patent number: 7698945
    Abstract: A method of detecting an internal flaw in a particulate filter includes a step of coupling ultrasonic transducer with the particulate filter. The method also includes a step of moving at least one of the ultrasonic transducer and the particulate filter relative to the other. Consistent coupling of the ultrasonic transducer with the particulate filter is maintained during the moving step. Ultrasonic energy is transmitted from the ultrasonic transducer through a majority of a volume of the particulate filter. The method also includes a step of determining if the particulate filter includes an internal flaw using the ultrasonic energy.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: April 20, 2010
    Assignee: Caterpillar Inc.
    Inventors: Dong Fei, Jade Katinas, Leonard G. Wheat, Linxiao Yu, Douglas A. Rebinsky
  • Publication number: 20090317299
    Abstract: An ultraviolet sensor arrangement detects the amount of sulfur in a fuel of an internal combustion engine by emitting an ultraviolet light field in the presence of the fuel. A detector is disposed to detect a responsive amount of fluorescent light and provide a sensing signal indicative of the amount of sulfur in the fuel. A filter (or filters) receives the sensing signal and provides a filtered sensing signal to a sensing circuit.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Applicant: Caterpillar Inc.
    Inventors: Douglas A. Rebinsky, Dong Fei, Svetlana M. Zemskova
  • Publication number: 20090260441
    Abstract: An on-machine inspection method for detecting whether a shaft of a transmission system has failed uses a test probe from flaw detection apparatus to discover echo signals with known peaks corresponding to defined weakened portions in the shaft. The test probe is then moved to prescribed angular distances about an end face of the shaft to obtain the echo signals.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Applicant: CATERPILLAR INC.
    Inventors: Linxiao Yu, Gary P. Shandley, Ginger Cunningham, Dong Fei, Douglas A. Rebinsky
  • Patent number: 7575715
    Abstract: A method for sterilizing medical devices, comprising the steps: producing a plurality of hydrogen surface-mixed diffusion flame; exposing the plurality of hydrogen surface-mixed diffusion flame to the medical devices for a predetermined period of time; and exposing the medical devices to the plurality of hydrogen surface-mixed diffusion flame at a predetermined distance; wherein the hydrogen surface mixed diffusion flame further produces free radicals for further sterilizing of the medical devices.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: August 18, 2009
    Assignee: Nanyang Technological University
    Inventors: David Tee Liang, Joo Hwa Tay, Tuti Mariana Lim, Dong Fei Li
  • Publication number: 20090120189
    Abstract: A method of detecting an internal flaw in a particulate filter includes a step of coupling ultrasonic transducer with the particulate filter. The method also includes a step of moving at least one of the ultrasonic transducer and the particulate filter relative to the other. Consistent coupling of the ultrasonic transducer with the particulate filter is maintained during the moving step. Ultrasonic energy is transmitted from the ultrasonic transducer through a majority of a volume of the particulate filter. The method also includes a step of determining if the particulate filter includes an internal flaw using the ultrasonic energy.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 14, 2009
    Inventors: Dong Fei, Jade Katinas, Leonard G. Wheat, Linxiao Yu, Douglas A. Rebinsky
  • Publication number: 20090020136
    Abstract: A method for cleaning a diesel particulate filter includes a step of coupling an acoustic generator directly to the diesel particulate filter via a support fixture. Ash deposited within the diesel particulate filter is dislodged with acoustic energy deposited by the acoustic generator. The ash may fall clear of the diesel particulate filter under the action of gravity and/or via pressurized air flow.
    Type: Application
    Filed: July 17, 2007
    Publication date: January 22, 2009
    Inventors: Jade Katinas, Dong Fei, Jamie Frisch, Jeremy Trethewey, Douglas Rebinsky, Nan Yang
  • Publication number: 20090007629
    Abstract: A system for determining acceptability of torsional dampers for service in a machine system includes a fixture, an ultrasonic scanner and an indicating device configured to indicate at least one of acceptability and unacceptability of a torsional damper based upon receipt of a signal from the scanner. A nondestructive testing method for a torsional vibration damper includes scanning a torsional vibration damper with ultrasonic energy, and determining a test value for the damper indicative of a viscosity of fluid sealed within a housing of the damper based on receiving transmitted ultrasonic energy. Receipt of ultrasonic energy may be used to determine the flow rate of fluid within the damper by indicating a time for fluid to flow to fill a void within the damper. The system and method may be implemented in a remanufacturing or salvaging process for torsional vibration dampers.
    Type: Application
    Filed: July 3, 2007
    Publication date: January 8, 2009
    Inventors: Linxiao Yu, Douglas A. Rebinsky, Dong Fei
  • Patent number: 7462222
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device includes a gas pressurization assembly. An element of the assembly is removably attachable to a first orifice of the filtering device. The system also includes a vacuum source fluidly connected to a second orifice of the filtering device.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: December 9, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Daniel S. Nordyke, Richard A. Crandell, Gregory Tomlins, Dong Fei, Alexander Panov, William H. Lane, Craig F. Habeger
  • Patent number: 7419532
    Abstract: According to an exemplary embodiment of the present disclosure, a method of loading a filtering device includes measuring a metric indicative of an initial loading of the filtering device and desirably positioning a quantity of matter proximate the filtering device. The method also includes applying a negative pressure to the filtering device such that at least a portion of the quantity of matter is drawn into the filtering device. The method further includes measuring a metric indicative of a final loading of the filtering device.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: September 2, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Richard A. Crandell, Dong Fei, Jeremy Trethewey, Natalie N. Vanderspiegel
  • Patent number: 7410529
    Abstract: According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of the filtering device without removing the filtering device from a work machine to which the filtering device is connected. The system also includes a heat source fluidly connected to the gas pressurization assembly.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: August 12, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl Lynn Sellers, David Thaler, Mark T. Grimm, Jeremy Trethewey, Natalie Noel Vanderspiegel, Richard A. Crandell, Dong Fei, Roger A. Hudson, Mark Alan Gasper, Herbert DaCosta, Eric Charles Fluga, Hemant Prasad Mallampalli, Bruce Frazier, Matthew Fletcher
  • Patent number: 7384455
    Abstract: According to an exemplary embodiment of the present disclosure, a method of detecting matter within a filtering device includes measuring a metric indicative of a first quantity of matter within the filtering device and removing a portion of the matter from the filtering device. The method also includes measuring a metric indicative of a second quantity of matter remaining within the filtering device.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: June 10, 2008
    Assignee: Caterpillar Inc.
    Inventors: Cheryl L. Sellers, Dong Fei, Jill R. Akers, Bappaditya Banerjee, Mark A. Gasper, Daniel S. Nordyke, Richard A. Crandell, Orlando Sellers, II, Christie S. Ragle, Ronald Silver, Julie M. Faas, Paul W. Park, Jeremy Trethewey
  • Publication number: 20080017238
    Abstract: A thermoelectric device includes a plurality of n-type thermoelectric elements and a plurality of p-type thermoelectric elements. These thermoelectric elements each have multiple end surfaces that are substantially parallel to each other, and include terminals attached to the end surfaces. The thermoelectric elements also include a support structure with an external surface covered by multiple layers of a thermoelectric material and a flexible substrate. The thermoelectric device also includes a plurality of conductive members which electrically interconnect the thermoelectric elements.
    Type: Application
    Filed: July 21, 2006
    Publication date: January 24, 2008
    Inventors: Dong Fei, Mahmoud A. Taher, Bao Feng, Leonard George Wheat, Beth Ann Howe