Patents by Inventor Dongming Tan
Dongming Tan 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: 11873832Abstract: A hub assembly for construction of a fan includes a hub plate having a front face, a rear face, and an annular surface extending between the front face and the rear face. The hub plate defines a hub assembly axis extending through the front face and the rear face which is configured to coincide with the fan axis. The hub assembly further includes a plurality of elongated root sections that are circumferentially spaced apart and extend radially from the annular surface. The elongated root sections have a substantially circular cross-section. The hub plate and the plurality of elongated spokes are unitarily formed.Type: GrantFiled: May 13, 2022Date of Patent: January 16, 2024Assignee: Caterpillar Inc.Inventors: Bradley P. Wrage, Dongming Tan, Adam C. Grove, Neil A. Terry
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Patent number: 11656037Abstract: A support assembly for attaching a heat exchanger to a frame of a machine. The support assembly includes a clip configured to at least partially surround a perimeter of a tube member of the heat exchanger. The clip includes a first end portion and a second end portion configured to engage the first end portion to hold the support assembly around the tube member in a closed position. The first end portion includes a laterally-extending projection and a laterally facing surface spaced apart from the projection by a recessed area. The second end portion defines a recess configured to receive a portion of the projection.Type: GrantFiled: May 17, 2019Date of Patent: May 23, 2023Assignee: Caterpillar Inc.Inventor: Dongming Tan
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Publication number: 20220268295Abstract: A hub assembly for construction of a fan includes a hub plate having a front face, a rear face, and an annular surface extending between the front face and the rear face. The hub plate defines a hub assembly axis extending through the front face and the rear face which is configured to coincide with the fan axis. The hub assembly further includes a plurality of elongated root sections that are circumferentially spaced apart and extend radially from the annular surface. The elongated root sections have a substantially circular cross-section. The hub plate and the plurality of elongated spokes are unitarily formed.Type: ApplicationFiled: May 13, 2022Publication date: August 25, 2022Applicant: Caterpillar Inc.Inventors: Bradley P. Wrage, Dongming Tan, Adam C. Grove, Neil A. Terry
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Patent number: 11346361Abstract: A hub assembly for construction of a fan includes a hub plate having a front face, a rear face, and an annular surface extending between the front face and the rear face. The hub plate defines a hub assembly axis extending through the front face and the rear face which is configured to coincide with the fan axis. The hub assembly further includes a plurality of elongated root sections that are circumferentially spaced apart and extend radially from the annular surface. The elongated root sections have a substantially circular cross-section. The hub plate and the plurality of elongated spokes are unitarily formed.Type: GrantFiled: August 10, 2020Date of Patent: May 31, 2022Inventors: Bradley P. Wrage, Dongming Tan, Adam C. Grove, Neil A. Terry
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Publication number: 20220042519Abstract: A hub assembly for construction of a fan includes a hub plate having a front face, a rear face, and an annular surface extending between the front face and the rear face. The hub plate defines a hub assembly axis extending through the front face and the rear face which is configured to coincide with the fan axis. The hub assembly further includes a plurality of elongated root sections that are circumferentially spaced apart and extend radially from the annular surface. The elongated root sections have a substantially circular cross-section. The hub plate and the plurality of elongated spokes are unitarily formed.Type: ApplicationFiled: August 10, 2020Publication date: February 10, 2022Applicant: Caterpillar Inc.Inventors: Bradley P. Wrage, Dongming Tan, Adam C. Grove, Neil A. Terry
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Patent number: 11230964Abstract: A machine system includes a compressor, and a cooler having an inlet tank to receive compressed air from the compressor, and a header assembly attached to the inlet tank and including a plurality of cooling tubes supported in the header and each having an external heat exchange surface exposed to a flow of cooling air. The cooler further includes a plurality of graphite pack seals each extending peripherally around one of the cooling tubes, and a clamping assembly clamping the pack seals against the header to squeeze the pack seals into sealing contact with the cooling tubes and the header.Type: GrantFiled: April 20, 2020Date of Patent: January 25, 2022Assignee: Caterpillar Inc.Inventors: Dongming Tan, James McCoy Voelker, Sharath Kumar Reddy Challa, Jianlong Xu
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Publication number: 20210324786Abstract: A machine system includes a compressor, and a cooler having an inlet tank to receive compressed air from the compressor, and a header assembly attached to the inlet tank and including a plurality of cooling tubes supported in the header and each having an external heat exchange surface exposed to a flow of cooling air. The cooler further includes a plurality of graphite pack seals each extending peripherally around one of the cooling tubes, and a clamping assembly clamping the pack seals against the header to squeeze the pack seals into sealing contact with the cooling tubes and the header.Type: ApplicationFiled: April 20, 2020Publication date: October 21, 2021Applicant: Caterpillar Inc.Inventors: Dongming Tan, James McCoy Voelker, Sharath Kumar Reddy Challa, Jianlong Xu
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Patent number: 11098965Abstract: A radiator includes a radiator frame, an array of tube assemblies each including a coolant tube and a tube clip supported in the radiator frame, and a lateral bump stop fitted between the array of tube assemblies and the radiator frame. The lateral bump stop includes cushions arranged in a staggered cushion pattern complementary to a staggered packing pattern of the tube assemblies with each of the cushions in contact with the tube clip of one of the tube assemblies.Type: GrantFiled: April 9, 2019Date of Patent: August 24, 2021Assignee: Caterpillar Inc.Inventors: Hussien A Albakhit, Virender Kumar, Jeffrey Joseph Speichinger, James McCoy Voelker, Fei Wang, Sudhakar Lakshminarayanan, Dongming Tan, Neil Alan Terry
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Patent number: 11047632Abstract: A support assembly for attaching a heat exchanger to a frame of a machine. The support assembly including a clip having one or more attachment features for attaching to the frame and a support member disposed between a first fin portion and a second fin portion of the heat exchanger. The support member disposed between the clip and the tube member to at least partially surrounds a perimeter of the tube member and form a seal therewith.Type: GrantFiled: January 24, 2019Date of Patent: June 29, 2021Assignee: Caterpillar Inc.Inventors: Dongming Tan, Virender Kumar
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Patent number: 11035615Abstract: A clip includes a body defining an exterior profile, and an adjustably sized aperture. The exterior profile defines at least one attachment feature and the body includes a surface defining the adjustably sized aperture and at least one stop member disposed in the adjustably sized aperture.Type: GrantFiled: August 23, 2018Date of Patent: June 15, 2021Assignee: Caterpillar Inc.Inventors: Dongming Tan, Susan Jill Toher
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Patent number: 11022077Abstract: An EGR cooler includes an elongated, stainless steel cooler housing with a first end having a stainless steel end plate and a second end opposite the first end, and an Inconel diffuser having an inlet end defining a gas inlet and an outlet end welded to the stainless steel end plate. The stainless steel end plate having a first thickness and the outlet end of the Inconel diffuser including a sidewall having a second thickness that is 50% or less of the first thickness.Type: GrantFiled: August 13, 2019Date of Patent: June 1, 2021Assignee: Caterpillar Inc.Inventors: Dongming Tan, Michael Pollard
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Publication number: 20210047989Abstract: An EGR cooler includes an elongated, stainless steel cooler housing with a first end having a stainless steel end plate and a second end opposite the first end, and an Inconel diffuser having an inlet end defining a gas inlet and an outlet end welded to the stainless steel end plate. The stainless steel end plate having a first thickness and the outlet end of the Inconel diffuser including a sidewall having a second thickness that is 50% or less of the first thickness.Type: ApplicationFiled: August 13, 2019Publication date: February 18, 2021Applicant: Caterpillar Inc.Inventors: Dongming Tan, Michael Pollard
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Publication number: 20200326143Abstract: A radiator includes a radiator frame, an array of tube assemblies each including a coolant tube and a tube clip supported in the radiator frame, and a lateral bump stop fitted between the array of tube assemblies and the radiator frame. The lateral bump stop includes cushions arranged in a staggered cushion pattern complementary to a staggered packing pattern of the tube assemblies with each of the cushions in contact with the tube clip of one of the tube assemblies.Type: ApplicationFiled: April 9, 2019Publication date: October 15, 2020Applicant: Caterpillar Inc.Inventors: Hussien A Albakhit, Virender Kumar, Jeffrey Joseph Speichinger, James McCoy Voelker, Fei Wang, Sudhakar Lakshminarayanan, Dongming Tan, Neil Alan Terry
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Publication number: 20200240722Abstract: A support assembly for attaching a heat exchanger to a frame of a machine. The support assembly including a clip having one or more attachment features for attaching to the frame and a support member disposed between a first fin portion and a second fin portion of the heat exchanger. The support member disposed between the clip and the tube member to at least partially surrounds a perimeter of the tube member and form a seal therewith.Type: ApplicationFiled: January 24, 2019Publication date: July 30, 2020Applicant: Caterpillar Inc.Inventors: Dongming Tan, Virender Kumar
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Publication number: 20200240723Abstract: A support assembly for attaching a heat exchanger to a frame of a machine. The support assembly includes a clip configured to at least partially surround a perimeter of a tube member of the heat exchanger. The clip includes a first end portion and a second end portion configured to engage the first end portion to hold the support assembly around the tube member in a closed position. The first end portion includes a laterally-extending projection and a laterally facing surface spaced apart from the projection by a recessed area. The second end portion defines a recess configured to receive a portion of the projection.Type: ApplicationFiled: May 17, 2019Publication date: July 30, 2020Applicant: Caterpillar Inc.Inventor: Dongming Tan
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Publication number: 20200064073Abstract: A clip includes a body defining an exterior profile, and an adjustably sized aperture. The exterior profile defines at least one attachment feature and the body includes a surface defining the adjustably sized aperture and at least one stop member disposed in the adjustably sized aperture.Type: ApplicationFiled: August 23, 2018Publication date: February 27, 2020Applicant: Caterpillar Inc.Inventors: Dongming Tan, Susan Jill Toher
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Patent number: 10378426Abstract: A system for determining a remaining useful life of a cooling component operatively connected to a prime mover. A controller performs a thermal strain analysis that includes determining the power output of the prime mover based upon sensor signals, determining a temperature output of the prime mover based upon the power output, determining a temperature at each of the plurality of analysis locations based upon the temperature output, determining a temperature difference based upon the temperature at each respective one of the plurality of analysis locations, and determining a thermal strain based upon the temperature difference. The controller repeats the thermal strain analysis at time intervals over a period of time, determines an accumulated damage for the cooling component based upon the thermal strain from each thermal strain analysis, and determines a remaining useful life of the cooling component based upon the material characteristics and the accumulated damage.Type: GrantFiled: December 16, 2016Date of Patent: August 13, 2019Assignee: Caterpillar Inc.Inventors: Dongming Tan, Doug A. Long, Neil Terry, Anthony L. Deluca, Jianlong Xu, Rohit K. Paramatmuni, Joseph L. Kennedy, Michael J. Campagna
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Patent number: 10222130Abstract: A work machine heat exchanger is provided. The work machine heat exchanger includes an upstream tank having an inlet and a downstream tank having an outlet. The work machine heat exchanger also includes a first core and a second core, both coupled between the upstream and the downstream tank, and including a first inner side sheet and a second inner side sheet, respectively. The first and the second inner side sheet define an air gap between the first and the second core. A pair of supporting bars are stacked between the first and the second inner side sheet, and configured to retain the first and the second inner side sheet parallel to each other. A first supporting bar of the pair of supporting bars is attached to the upstream tank and a second supporting bar of the pair of supporting bars is attached to the downstream tank.Type: GrantFiled: August 8, 2016Date of Patent: March 5, 2019Assignee: Caterpillar Inc.Inventors: Joseph L. Kennedy, Dongming Tan
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Publication number: 20180171861Abstract: A system for determining a remaining useful life of a cooling component operatively connected to a prime mover. A controller performs a thermal strain analysis that includes determining the power output of the prime mover based upon sensor signals, determining a temperature output of the prime mover based upon the power output, determining a temperature at each of the plurality of analysis locations based upon the temperature output, determining a temperature difference based upon the temperature at each respective one of the plurality of analysis locations, and determining a thermal strain based upon the temperature difference. The controller repeats the thermal strain analysis at time intervals over a period of time, determines an accumulated damage for the cooling component based upon the thermal strain from each thermal strain analysis, and determines a remaining useful life of the cooling component based upon the material characteristics and the accumulated damage.Type: ApplicationFiled: December 16, 2016Publication date: June 21, 2018Applicant: Caterpillar Inc.Inventors: Dongming Tan, Doug A. Long, Neil Terry, Anthony L. Deluca, Jianlong Xu, Rohit K. Paramatmuni, Joseph L. Kennedy, Michael J. Campagna
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Publication number: 20180156230Abstract: A fan hub stiffener is provided. The stiffener occupies a gap between parallel fan hub plates to reduce or eliminate stress on the plates during operation. The stiffener may include a body and arms extending radially outward from the body and into the spaces between adjacent fan blades.Type: ApplicationFiled: December 6, 2016Publication date: June 7, 2018Applicant: Caterpillar Inc.Inventors: Joseph Kennedy, Nirag Sheth, Jianlong Xu, Dongming Tan, Neil Terry, Sumeeth Sivanagere, Haifeng Li