Patents by Inventor Robert Parrish
Robert Parrish 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: 11920217Abstract: A titanium alloy for additive manufacturing that includes 5.5 to 6.5 wt % aluminum (Al); 3.0 to 4.5 wt % vanadium (V); 1.0 to 2.0 wt % molybdenum (Mo); 0.3 to 1.5 wt % iron (Fe); 0.3 to 1.5 wt % chromium (Cr); 0.05 to 0.5 wt % zirconium (Zr); 0.2 to 0.3 wt % oxygen (O); maximum of 0.05 wt % nitrogen (N); maximum of 0.08 wt % carbon (C); maximum of 0.25 wt % silicon (Si); and balance titanium, wherein a value of an aluminum structural equivalent [Al]eq ranges from 7.5 to 9.5 wt %, and is defined by the following equation: [Al]eq=[Al]+[O]×10+[Zr]/6, and wherein a value of a molybdenum structural equivalent [Mo]eq ranges from 6.0 to 8.5 wt %, and is defined by the following equation: [Mo]eq=[Mo]+[V]/1.5+[Cr]×1.25+[Fe]×2.5.Type: GrantFiled: August 31, 2018Date of Patent: March 5, 2024Assignees: The Boeing Company, VSMPO-AVISMA CorporationInventors: Natalia Mitropolskaya, Robert Briggs, Catherine Parrish, Arash Ghabchi, Matthew Crill, Michael Leder, Igor Puzakov, Alexey Zaitsev, Natalia Tarenkova
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Patent number: 11614158Abstract: A hydraulic gerotor pump for an automatic transmission may comprise a housing and a gear set rotatably disposed within the housing. The gear set may comprise an inner gear and an outer gear having radially opposed intermeshing teeth that together define a plurality of circumferentially disposed variable volume pumping chambers therebetween. The housing may be made of a first aluminum-based material, and the inner gear and the outer gear of the gear set may be made of a second aluminum-based material. The linear coefficient of thermal expansion of the first aluminum-based material may be substantially the same as that of the second aluminum-based material.Type: GrantFiled: July 13, 2020Date of Patent: March 28, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Wenying Yang, Zhe Li, Abir R. Das, Chad M. Huls, Anil K. Sachdev
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Patent number: 11542948Abstract: A scavenging centrifugal baffle pump. The scavenging centrifugal baffle pump includes a main pump, which includes a pump housing. The scavenging centrifugal baffle pump further includes a baffle connected to the main pump housing and defines defining an interior volume. The scavenging centrifugal baffle pump also includes a gear coupled to the main pump at least partially located in the interior volume of the baffle, a reservoir defined in the interior volume of the baffle, an inlet defined in the baffle adjacent to the reservoir and an elongate passage defined by the baffle.Type: GrantFiled: April 29, 2019Date of Patent: January 3, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Samuel Sherman
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Publication number: 20220083013Abstract: Coordinated control systems and methods of controlling an actual process are provided. The coordinated control systems and methods of controlling an actual process utilize a nonlinear dynamic model, where measured disturbing variables are incorporated into the nonlinear dynamic model, and predictive controller calculations.Type: ApplicationFiled: January 29, 2020Publication date: March 17, 2022Applicant: Dow Global Technologies LLCInventors: John Roberts Parrish, Donald Alexander Morrow, JR., Mark Louis Nelson
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Patent number: 11242019Abstract: A cooling and lubrication system for a motor vehicle drive unit includes a drive unit sump, a first mechanically-driven pump, a second mechanically-driven pump, and an oil/air separator reservoir, among other possible components. The drive unit sump holds drive unit fluid. The first mechanically-driven pump fluidly communicates with the drive unit sump, and the second mechanically-driven pump fluidly communicates with the drive unit sump. The oil/air separator reservoir resides downstream of the first mechanically-driven pump and resides downstream of the second mechanically-driven pump.Type: GrantFiled: October 10, 2018Date of Patent: February 8, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Nathaniel J. Diroff, Vijay A. Neelakantan
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Publication number: 20220010874Abstract: A hydraulic gerotor pump for an automatic transmission may comprise a housing and a gear set rotatably disposed within the housing. The gear set may comprise an inner gear and an outer gear having radially opposed intermeshing teeth that together define a plurality of circumferentially disposed variable volume pumping chambers therebetween. The housing may be made of a first aluminum-based material, and the inner gear and the outer gear of the gear set may be made of a second aluminum-based material. The linear coefficient of thermal expansion of the first aluminum-based material may be substantially the same as that of the second aluminum-based material.Type: ApplicationFiled: July 13, 2020Publication date: January 13, 2022Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Wenying Yang, Zhe Li, Abir R. Das, Chad M. Huls, Anil K. Sachdev
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Patent number: 10895257Abstract: A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.Type: GrantFiled: February 13, 2018Date of Patent: January 19, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Michael P. Fannin, Ted T. Selever
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Patent number: 10837329Abstract: A fluid management system, or flow control system, for an automotive propulsion system is provided. The system includes a housing defining a sump configured to collect a volume of liquid and gaseous fluid and a pump configured to pump fluid from the sump. The pump defines a pump inlet and a pump outlet. A conduit is in fluid communication with the pump outlet. A passive valve is disposed within the conduit, the conduit defining a conduit outlet downstream of the passive valve, and the conduit further defining an orifice between the pump and the passive valve. The passive valve allows hydraulic fluid to flow past the valve, while substantially preventing air from flowing past the passive valve. The air is instead bled out through the orifice, along with some of the hydraulic fluid.Type: GrantFiled: November 16, 2017Date of Patent: November 17, 2020Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Robert Parrish, Vijay A Neelakantan, Michael A Fisher, David J Varda
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Publication number: 20200340475Abstract: A scavenging centrifugal baffle pump includes a main pump including a pump housing, a gear external to the pump housing coupled to the main pump, a baffle connected to the main pump housing defining an interior volume, the gear at least partially located in the interior volume, a reservoir defined in the interior volume of the baffle, an inlet defined in the baffle adjacent to the reservoir, an opening defined in the baffle, wherein the opening exposes a portion of the gear, and an elongate passage defined by the baffle including an outlet, wherein the elongate passage connects the interior volume of the baffle with the outlet.Type: ApplicationFiled: April 29, 2019Publication date: October 29, 2020Inventors: Robert Parrish, Samuel Sherman
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Publication number: 20200114848Abstract: A cooling and lubrication system for a motor vehicle drive unit includes a drive unit sump, a first mechanically-driven pump, a second mechanically-driven pump, and an oil/air separator reservoir, among other possible components. The drive unit sump holds drive unit fluid. The first mechanically-driven pump fluidly communicates with the drive unit sump, and the second mechanically-driven pump fluidly communicates with the drive unit sump. The oil/air separator reservoir resides downstream of the first mechanically-driven pump and resides downstream of the second mechanically-driven pump.Type: ApplicationFiled: October 10, 2018Publication date: April 16, 2020Inventors: Robert Parrish, Nathaniel J. Diroff, Vijay A. Neelakantan
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Publication number: 20190249663Abstract: A gerotor pump assembly, and a system and method for operating a gerotor pump assembly, result in a lubrication strategy for operating in a loss-of-prime mode. An inner drive gear may be rotated in a first direction and in a second opposite direction about an axis of rotation. The inner drive gear has a number of projections extending outwardly therefrom. An outer driven gear surrounds the inner drive gear and defines a number of recessions along an inner surface configured to engage with the projections of the inner drive gear. The outer driven gear and the inner drive gear further define at least one dynamically-changing fluid cavity therebetween. The inner drive gear and the outer driven gear define an oil transfer volume clearance between a projection and a recession in a fully engaged position. Oil is maintained within the oil transfer volume clearance as the inner drive gear is rotated.Type: ApplicationFiled: February 13, 2018Publication date: August 15, 2019Inventors: Robert Parrish, Michael P. Fannin, Ted T. Selever
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Publication number: 20190145295Abstract: A fluid management system, or flow control system, for an automotive propulsion system is provided. The system includes a housing defining a sump configured to collect a volume of liquid and gaseous fluid and a pump configured to pump fluid from the sump. The pump defines a pump inlet and a pump outlet. A conduit is in fluid communication with the pump outlet. A passive valve is disposed within the conduit, the conduit defining a conduit outlet downstream of the passive valve, and the conduit further defining an orifice between the pump and the passive valve. The passive valve allows hydraulic fluid to flow past the valve, while substantially preventing air from flowing past the passive valve. The air is instead bled out through the orifice, along with some of the hydraulic fluid.Type: ApplicationFiled: November 16, 2017Publication date: May 16, 2019Inventors: Robert Parrish, Vijay A. Neelakantan, Michael A. Fisher, David J. Varda
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Publication number: 20190011046Abstract: A hydraulic assembly includes a pump that is bi-rotationally driven by an output shaft of a transmission or transaxle and a hydraulic circuit that includes a pressure actuated control valve and a plurality of check valves. The check valves are arranged so that, regardless of the direction of rotation of the pump, the suction side of the pump is always in fluid communication with a sump and the pressure side of the pump is always in fluid communication with one of the inlet ports of the spool valve. In one direction of rotation of the pump, pressure in a line is supplied to a control port of a control valve to translate a control element to connect an outlet of the pump to the fluid system of the transmission or transaxle. In the other direction of rotation, no pressure is supplied to the control port and the control element, biased by a spring, connects the other outlet of the pump to the fluid system of the transmission.Type: ApplicationFiled: July 5, 2017Publication date: January 10, 2019Inventors: Pete R. Garcia, Robert Parrish
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Publication number: 20160001123Abstract: A support lift for a physically disabled user, without additional assistance from another person, to access and use a rowing a machine is provided. The support lift may include a support line and a handle mounted above the seat of the rowing machine. Therefore, the user may grasp the handle and lower onto the seat of the rowing machine without assistance.Type: ApplicationFiled: July 1, 2014Publication date: January 7, 2016Inventor: Anthony Roberts Parrish, JR.
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Publication number: 20060239401Abstract: A system and process for classifying a piece of material of unknown composition at high speeds, where the system connected to a power supply. The piece is irradiated with first x-rays from an x-ray source, causing the piece to fluoresce x-rays. The fluoresced x-rays are detected with an x-ray detector, and the piece of material is classified from the detected fluoresced x-rays. Detecting and classifying may be cumulatively performed in less than one second. An x-ray fluorescence spectrum of the piece of material may be determined from the detected fluoresced x-rays, and the detection of the fluoresced x-rays may be conditioned such that accurate determination of the x-ray fluorescence spectrum is not significantly compromised, slowed or complicated by extraneous x-rays. The piece of material may be classified by recognizing the spectral pattern of the determined x-ray fluorescence spectrum. The piece of material may be flattened prior to irradiation and detection.Type: ApplicationFiled: February 17, 2006Publication date: October 26, 2006Applicant: Spectramet, LLCInventors: Edward Sommer, Robert Parrish, David Spencer, Charles Roos
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Publication number: 20060013360Abstract: A system and process for classifying a piece of material of unknown composition at high speeds, where the system connected to a power supply. The piece is irradiated with first x-rays from an x-ray source, causing the piece to fluoresce x-rays. The fluoresced x-rays are detected with an x-ray detector, and the piece of material is classified from the detected fluoresced x-rays. Detecting and classifying may be cumulatively performed in less than one second. An x-ray fluorescence spectrum of the piece of material may be determined from the detected fluoresced x-rays, and the detection of the fluoresced x-rays may be conditioned such that accurate determination of the x-ray fluorescence spectrum is not significantly compromised, slowed or complicated by extraneous x-rays. The piece of material may be classified by recognizing the spectral pattern of the determined x-ray fluorescence spectrum. The piece of material may be flattened prior to irradiation and detection.Type: ApplicationFiled: September 22, 2005Publication date: January 19, 2006Inventors: Edward Sommer, Robert Parrish, David Spencer, Charles Roos
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Publication number: 20050078786Abstract: A system and process for classifying a piece of material of unknown composition at high speeds, where the system connected to a power supply. The piece is irradiated with first x-rays from an x-ray source, causing the piece to fluoresce x-rays. The fluoresced x-rays are detected with an x-ray detector, and the piece of material is classified from the detected fluoresced x-rays. Detecting and classifying may be cumulatively performed in less than one second. An x-ray fluorescence spectrum of the piece of material may be determined from the detected fluoresced x-rays, and the detection of the fluoresced x-rays may be conditioned such that accurate determination of the x-ray fluorescence spectrum is not significantly compromised, slowed or complicated by extraneous x-rays. The piece of material may be classified by recognizing the spectral pattern of the determined x-ray fluorescence spectrum. The piece of material may be flattened prior to irradiation and detection.Type: ApplicationFiled: October 19, 2004Publication date: April 14, 2005Inventors: Edward Sommer, Robert Parrish, David Spencer, Charles Roos
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Patent number: 6498220Abstract: A process is disclosed for removing particulate product from a fluidized bed reactor to optimize, within the constraints of the product removal cycle, conservation of gas in which the product is entrained. Data are compiled on the time required for equalizing pressure between product discharge tanks, and these data are used to determine the optimum times for various valves to be open. Product movement steps and equalization steps can be performed simultaneously.Type: GrantFiled: June 22, 2001Date of Patent: December 24, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Ivan Jeremy Hartley, Guadalupe Garcia Leal, John Roberts Parrish
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Patent number: 6472483Abstract: The liquid content of granular product removed from a fluidized bed polymerization reactor operating in the condensing mode is reduced or minimized by removing the product from a level in the fluidized bed which is about 0.21 to about 0.59 of its height while venting the product discharge tank to a point higher in the fluidized bed.Type: GrantFiled: February 28, 2000Date of Patent: October 29, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Mark Gregory Goode, Mark Williams Blood, Timothy Joseph Howley, Billy Jack Garner, Robert Darrell Olson, Ralph Niels Hesson, Thomas Walter Pilgrim, John Roberts Parrish
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Patent number: 6365681Abstract: In a polymerization reaction, an upset is anticipated and inhibited by monitoring at least one reaction condition and comparing it to the desired value or normal range for the condition as projected by a computer model for the variable or variables of the process. In a preferred variation, the process not only continuously adjusts the set point or range for an upset-significant variable such as temperature, but also utilizes the rate of change of such a variable as a harbinger of an upset.Type: GrantFiled: January 16, 2001Date of Patent: April 2, 2002Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Ivan Jeremy Hartley, John Roberts Parrish, Paul Kevin Samples, Darrell James Long