Patents by Inventor Ronald D. Bremner
Ronald D. Bremner 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: 12142967Abstract: An electric machine includes a housing, a stator assembly within the housing, a rotor assembly within the housing, and a dam assembly including a first dam element. The first dam element is arranged on one end of the electric machine. The first dam element includes an air inlet. The air inlet is configured to receive a supply of pressurized air.Type: GrantFiled: August 18, 2020Date of Patent: November 12, 2024Assignee: DEERE & COMPANYInventors: Ronald D. Bremner, Rainer Gugel, David Mueller
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Patent number: 11873826Abstract: An electric machine for a work vehicle including a housing, a stator assembly positioned inside the housing, and a rotor assembly rotatably connected to the housing via a bearing. The rotor assembly is positioned to form an air gap between the stator assembly and the rotor assembly. A front air dam is positioned at a first end of the housing and adjacent to the air gap. The front air dam includes an external barrier, an internal barrier, an opening in the internal barrier, and a passageway in the internal barrier. A fan is attached to the rotor assembly and positioned within the housing. The fan generates a first air flow towards the air gap and a second air flow through the passageway.Type: GrantFiled: January 10, 2022Date of Patent: January 16, 2024Assignee: DEERE & COMPANYInventor: Ronald D. Bremner
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Publication number: 20230332610Abstract: An electric machine for a work vehicle including a housing, a stator assembly positioned inside the housing, and a rotor assembly rotatably connected to the housing via a bearing. The rotor assembly is positioned to form an air gap between the stator assembly and the rotor assembly. A front air dam is positioned at a first end of the housing and adjacent to the air gap. The front air dam includes an external barrier, an internal barrier, an opening in the internal barrier, and a passageway in the internal barrier. A fan is attached to the rotor assembly and positioned within the housing. The fan generates a first air flow towards the air gap and a second air flow through the passageway.Type: ApplicationFiled: June 20, 2023Publication date: October 19, 2023Inventor: RONALD D. BREMNER
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Patent number: 11780000Abstract: A method of producing a parallel spiral core for casting a housing includes designing a half cylinder body in a model based on a desired shape of the housing, adding parallel spiral features to the body in the model, and producing data of the model based on the desired shape of the housing with the parallel spiral features. The data is then loaded into a machining tool, which then machines a pattern of the parallel spiral core out of material. The method also includes casting the parallel spiral core from the pattern such that the parallel spiral core comprises a core body and a parallel spiral formed on the core body, the parallel spiral winding circumferentially about the core body from a first end to a second end of the core body.Type: GrantFiled: April 29, 2020Date of Patent: October 10, 2023Assignee: DEERE & COMPANYInventor: Ronald D. Bremner
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Patent number: 11750059Abstract: An end shield for an electric machine is provided. The end shield includes a collar extending between a housing of the electric machine and an end coil. The collar includes one or more spray apertures for directing a fluid onto the end coil.Type: GrantFiled: February 7, 2020Date of Patent: September 5, 2023Assignee: Deere & CompanyInventor: Ronald D. Bremner
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Patent number: 11607948Abstract: A transmission includes an input assembly, an electric machine, a variator and a power shift assembly. The input assembly has directional clutches and is configured to receive rotational engine input power. The variator has only a single planetary set configured and combine to receive rotational input power from the electric machine and the input assembly. The power shift assembly is configured to receive rotational power from the variator, and it includes speed gears, range gears and power shift clutches and an output shaft. The power shift clutches are configured to dissipate energy from asynchronous gear meshing. The power shift assembly is configured to effect multiple different rotational power flows through to the output shaft that arise from meshing gears at each shift to effect a unique one of multiple gear ratios.Type: GrantFiled: December 22, 2021Date of Patent: March 21, 2023Assignee: DEERE & COMPANYInventors: Thomas G. Ore, Ronald D. Bremner, Michael A. Rehberg
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Publication number: 20220275805Abstract: An electric machine for a work vehicle including a housing, a stator assembly positioned inside the housing, and a rotor assembly rotatably connected to the housing via a bearing. The rotor assembly is positioned to form an air gap between the stator assembly and the rotor assembly. A front air dam is positioned at a first end of the housing and adjacent to the air gap. The front air dam includes an external barrier, an internal barrier, an opening in the internal barrier, and a passageway in the internal barrier. A fan is attached to the rotor assembly and positioned within the housing. The fan generates a first air flow towards the air gap and a second air flow through the passageway.Type: ApplicationFiled: January 10, 2022Publication date: September 1, 2022Inventor: RONALD D. BREMNER
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Patent number: 11420512Abstract: An integrated transmission includes a transmission housing having a first housing face through which the input shaft extends; a CVP housed within the housing; and a transmission assembly. The transmission assembly includes an input arrangement contained within the housing and having at least one input transmission component selectively coupling the engine power and the CVP power; a variator arrangement contained within the housing, configured to receive the engine and CVP power and to selectively transfer the engine power, CVP power, and a summing of engine and CVP power as variator output power; and a transmission gear arrangement contained within the transmission housing engaged with the variator arrangement and configured to provide a selective gear reduction for transmission to an output shaft that extends out of the transmission housing. The integrated transmission includes a power electronics apparatus arranged within or on the transmission housing and electrically coupled to the CVP.Type: GrantFiled: December 9, 2019Date of Patent: August 23, 2022Assignee: DEERE & COMPANYInventors: Stacy K. Worley, Ronald D. Bremner
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Publication number: 20220247274Abstract: An electric machine includes a housing, a stator assembly within the housing, a rotor assembly within the housing, and a dam assembly including a first dam element. The first dam element is arranged on one end of the electric machine. The first darn element includes an air inlet. The air inlet is configured to receive a supply of pressurized air.Type: ApplicationFiled: August 18, 2020Publication date: August 4, 2022Applicant: Deere & CompanyInventors: Ronald D. BREMNER, Rainer GUGEL, David MUELLER
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Publication number: 20210339309Abstract: A method of producing a parallel spiral core for casting a housing includes designing a half cylinder body in a model based on a desired shape of the housing, adding parallel spiral features to the body in the model, and producing data of the model based on the desired shape of the housing with the parallel spiral features. The data is then loaded into a machining tool, which then machines a pattern of the parallel spiral core out of material. The method also includes casting the parallel spiral core from the pattern such that the parallel spiral core comprises a core body and a parallel spiral formed on the core body, the parallel spiral winding circumferentially about the core body from a first end to a second end of the core body.Type: ApplicationFiled: April 29, 2020Publication date: November 4, 2021Inventor: Ronald D. Bremner
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Patent number: 11137052Abstract: A transmission assembly is provided for a work vehicle powertrain having an engine delivering engine power to an input shaft. The transmission assembly includes a transmission assembly housing having a first housing side through which the input shaft extends and a second housing side; a continuously variable power source (CVP) at least partially contained within the transmission assembly housing; an input arrangement contained within the transmission assembly housing and having at least one input transmission component; a variator contained within the transmission housing with a first variator side oriented toward the first housing side and a second variator side oriented toward the second housing side and configured to receive the engine power and the CVP power through the input arrangement on the second variator side; and a transmission gear arrangement contained within the transmission assembly housing for transmission of output power from the variator to an output shaft.Type: GrantFiled: August 29, 2019Date of Patent: October 5, 2021Assignee: Deere & CompanyInventors: Thomas G. Ore, David Mueller, Rainer Gugel, Ronald D. Bremner
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Publication number: 20210249929Abstract: An end shield for an electric machine is provided. The end shield includes a collar extending between a housing of the electric machine and an end coil. The collar includes one or more spray apertures for directing a fluid onto the end coil.Type: ApplicationFiled: February 7, 2020Publication date: August 12, 2021Applicant: Deere & CompanyInventor: Ronald D. Bremner
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Publication number: 20210170857Abstract: An integrated transmission includes a transmission housing having a first housing face through which the input shaft extends; a CVP housed within the housing; and a transmission assembly. The transmission assembly includes an input arrangement contained within the housing and having at least one input transmission component selectively coupling the engine power and the CVP power; a variator arrangement contained within the housing, configured to receive the engine and CVP power and to selectively transfer the engine power, CVP power, and a summing of engine and CVP power as variator output power; and a transmission gear arrangement contained within the transmission housing engaged with the variator arrangement and configured to provide a selective gear reduction for transmission to an output shaft that extends out of the transmission housing. The integrated transmission includes a power electronics apparatus arranged within or on the transmission housing and electrically coupled to the CVP.Type: ApplicationFiled: December 9, 2019Publication date: June 10, 2021Inventors: Stacy K. Worley, Ronald D. Bremner
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Publication number: 20210062900Abstract: A transmission assembly is provided for a work vehicle powertrain having an engine delivering engine power to an input shaft. The transmission assembly includes a transmission assembly housing having a first housing side through which the input shaft extends and a second housing side; a continuously variable power source (CVP) at least partially contained within the transmission assembly housing; an input arrangement contained within the transmission assembly housing and having at least one input transmission component; a variator contained within the transmission housing with a first variator side oriented toward the first housing side and a second variator side oriented toward the second housing side and configured to receive the engine power and the CVP power through the input arrangement on the second variator side; and a transmission gear arrangement contained within the transmission assembly housing for transmission of output power from the variator to an output shaft.Type: ApplicationFiled: August 29, 2019Publication date: March 4, 2021Inventors: Thomas G. Ore, David Mueller, Rainer Gugel, Ronald D. Bremner
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Patent number: 9062761Abstract: A computer-implemented shifting method for a vehicle is described. The method is based upon, at least in part, identifying a reference output torque at an output shaft associated with a transmission of the vehicle. The method includes reducing a torque capacity of an off-going output clutch from a starting capacity and determining a torque load for the off-going output clutch. The method includes maintaining a first transition torque capacity during a first transition period after the determining of the torque load, and increasing a torque capacity of the on-coming output clutch to a second transition torque capacity. The method includes maintaining the second transition torque during a second transition period. The method includes reducing the torque capacity of the off-going output clutch to a first final torque capacity and increasing the torque capacity of the on-coming output clutch to a final torque capacity.Type: GrantFiled: October 17, 2013Date of Patent: June 23, 2015Assignee: Deere & CompanyInventor: Ronald D. Bremner
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Publication number: 20150112560Abstract: A computer-implemented shifting method for a vehicle is described. The method is based upon, at least in part, identifying a reference output torque at an output shaft associated with a transmission of the vehicle. The method includes reducing a torque capacity of an off-going output clutch from a starting capacity and determining a torque load for the off-going output clutch. The method includes maintaining a first transition torque capacity during a first transition period after the determining of the torque load, and increasing a torque capacity of the on-coming output clutch to a second transition torque capacity. The method includes maintaining the second transition torque during a second transition period. The method includes reducing the torque capacity of the off-going output clutch to a first final torque capacity and increasing the torque capacity of the on-coming output clutch to a final torque capacity.Type: ApplicationFiled: October 17, 2013Publication date: April 23, 2015Applicant: Deere & CompanyInventor: Ronald D. Bremner
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Patent number: 5613584Abstract: A control system for controlling multi-ratio vehicle transmission includes a speed select lever movable from a park position to selected gear ratio positions and a directional control lever having forward, neutral and reverse positions. A system is provided to cause the directional control lever to automatically move to its neutral position when the shift control lever is moved to its park position.Type: GrantFiled: November 14, 1995Date of Patent: March 25, 1997Assignee: Deere & CompanyInventors: Ronald D. Bremner, Bruce C. Newendorp, Patricia M. D'Alessandro
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Patent number: 5327978Abstract: A telescoping draft link assembly includes a hollow first tractor-coupled link and a second implement-coupled link slidably received by a channel in the first link. A pocket is formed in the first link next to the channel. A plate is pivotally mounted in the pocket and is pivotal from a release position wherein the plate is entirely received in the pocket to a locking position wherein at least a portion of the plate projects into the channel. The second link has a notch formed therein, an end of the notch forming a shoulder which is engageable with the plate to releasably hold the second link in the retracted position. A spring is biased to urge the plate towards its locking position and a knob is attached to the plate so that an operator may pivot the plate to a release position.Type: GrantFiled: January 27, 1993Date of Patent: July 12, 1994Assignee: Deere & CompanyInventor: Ronald D. Bremner