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).
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Publication number: 20130000407Abstract: 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: ApplicationFiled: June 29, 2011Publication date: January 3, 2013Applicant: CATERPILLAR, INCInventors: Dong Fei, Douglas Rebinsky, Colm Flannery
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Publication number: 20120318134Abstract: 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: ApplicationFiled: August 27, 2012Publication date: December 20, 2012Inventors: 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
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Patent number: 8250902Abstract: 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: GrantFiled: May 27, 2009Date of Patent: August 28, 2012Assignee: Caterpillar Inc.Inventors: Mohamed I. Daoud, Dong Fei
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Patent number: 8252093Abstract: 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: GrantFiled: July 29, 2008Date of Patent: August 28, 2012Inventors: 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
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Publication number: 20100300557Abstract: 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: ApplicationFiled: May 27, 2009Publication date: December 2, 2010Applicant: Caterpillar Inc.Inventors: Dong Fei, Mohamed I. Daoud
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Patent number: 7837750Abstract: 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: GrantFiled: July 17, 2007Date of Patent: November 23, 2010Assignee: Caterpillar IncInventors: Jade Katinas, Dong Fei, Jamie Frisch, Jeremy Trethewey, Douglas Rebinsky, Nan Yang
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Patent number: 7805997Abstract: 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: GrantFiled: April 21, 2008Date of Patent: October 5, 2010Assignee: Caterpillar IncInventors: Linxiao Yu, Gary P. Shandley, Ginger Cunningham, Dong Fei, Douglas A. Rebinsky
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Patent number: 7748256Abstract: 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: GrantFiled: July 3, 2007Date of Patent: July 6, 2010Assignee: Caterpillar Inc.Inventors: Linxiao Yu, Douglas A. Rebinsky, Dong Fei
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Patent number: 7698945Abstract: 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: GrantFiled: November 8, 2007Date of Patent: April 20, 2010Assignee: Caterpillar Inc.Inventors: Dong Fei, Jade Katinas, Leonard G. Wheat, Linxiao Yu, Douglas A. Rebinsky
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Publication number: 20090317299Abstract: 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: ApplicationFiled: June 24, 2008Publication date: December 24, 2009Applicant: Caterpillar Inc.Inventors: Douglas A. Rebinsky, Dong Fei, Svetlana M. Zemskova
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Publication number: 20090260441Abstract: 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: ApplicationFiled: April 21, 2008Publication date: October 22, 2009Applicant: CATERPILLAR INC.Inventors: Linxiao Yu, Gary P. Shandley, Ginger Cunningham, Dong Fei, Douglas A. Rebinsky
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Patent number: 7575715Abstract: 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: GrantFiled: May 22, 2003Date of Patent: August 18, 2009Assignee: Nanyang Technological UniversityInventors: David Tee Liang, Joo Hwa Tay, Tuti Mariana Lim, Dong Fei Li
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Publication number: 20090120189Abstract: 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: ApplicationFiled: November 8, 2007Publication date: May 14, 2009Inventors: Dong Fei, Jade Katinas, Leonard G. Wheat, Linxiao Yu, Douglas A. Rebinsky
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Publication number: 20090020136Abstract: 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: ApplicationFiled: July 17, 2007Publication date: January 22, 2009Inventors: Jade Katinas, Dong Fei, Jamie Frisch, Jeremy Trethewey, Douglas Rebinsky, Nan Yang
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Publication number: 20090007629Abstract: 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: ApplicationFiled: July 3, 2007Publication date: January 8, 2009Inventors: Linxiao Yu, Douglas A. Rebinsky, Dong Fei
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Patent number: 7462222Abstract: 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: GrantFiled: October 5, 2004Date of Patent: December 9, 2008Assignee: Caterpillar Inc.Inventors: Cheryl L. Sellers, Daniel S. Nordyke, Richard A. Crandell, Gregory Tomlins, Dong Fei, Alexander Panov, William H. Lane, Craig F. Habeger
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Patent number: 7419532Abstract: 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: GrantFiled: February 28, 2006Date of Patent: September 2, 2008Assignee: Caterpillar Inc.Inventors: Cheryl L. Sellers, Richard A. Crandell, Dong Fei, Jeremy Trethewey, Natalie N. Vanderspiegel
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Patent number: 7410529Abstract: 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: GrantFiled: May 27, 2005Date of Patent: August 12, 2008Assignee: 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
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Patent number: 7384455Abstract: 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: GrantFiled: October 31, 2005Date of Patent: June 10, 2008Assignee: 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
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Publication number: 20080017238Abstract: 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: ApplicationFiled: July 21, 2006Publication date: January 24, 2008Inventors: Dong Fei, Mahmoud A. Taher, Bao Feng, Leonard George Wheat, Beth Ann Howe