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).

  • Patent number: 12142967
    Abstract: 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: Grant
    Filed: August 18, 2020
    Date of Patent: November 12, 2024
    Assignee: DEERE & COMPANY
    Inventors: Ronald D. Bremner, Rainer Gugel, David Mueller
  • Patent number: 11873826
    Abstract: 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: Grant
    Filed: January 10, 2022
    Date of Patent: January 16, 2024
    Assignee: DEERE & COMPANY
    Inventor: Ronald D. Bremner
  • Publication number: 20230332610
    Abstract: 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: Application
    Filed: June 20, 2023
    Publication date: October 19, 2023
    Inventor: RONALD D. BREMNER
  • Patent number: 11780000
    Abstract: 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: Grant
    Filed: April 29, 2020
    Date of Patent: October 10, 2023
    Assignee: DEERE & COMPANY
    Inventor: Ronald D. Bremner
  • Patent number: 11750059
    Abstract: 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: Grant
    Filed: February 7, 2020
    Date of Patent: September 5, 2023
    Assignee: Deere & Company
    Inventor: Ronald D. Bremner
  • Patent number: 11607948
    Abstract: 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: Grant
    Filed: December 22, 2021
    Date of Patent: March 21, 2023
    Assignee: DEERE & COMPANY
    Inventors: Thomas G. Ore, Ronald D. Bremner, Michael A. Rehberg
  • Publication number: 20220275805
    Abstract: 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: Application
    Filed: January 10, 2022
    Publication date: September 1, 2022
    Inventor: RONALD D. BREMNER
  • Patent number: 11420512
    Abstract: 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: Grant
    Filed: December 9, 2019
    Date of Patent: August 23, 2022
    Assignee: DEERE & COMPANY
    Inventors: Stacy K. Worley, Ronald D. Bremner
  • Publication number: 20220247274
    Abstract: 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: Application
    Filed: August 18, 2020
    Publication date: August 4, 2022
    Applicant: Deere & Company
    Inventors: Ronald D. BREMNER, Rainer GUGEL, David MUELLER
  • Publication number: 20210339309
    Abstract: 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: Application
    Filed: April 29, 2020
    Publication date: November 4, 2021
    Inventor: Ronald D. Bremner
  • Patent number: 11137052
    Abstract: 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: Grant
    Filed: August 29, 2019
    Date of Patent: October 5, 2021
    Assignee: Deere & Company
    Inventors: Thomas G. Ore, David Mueller, Rainer Gugel, Ronald D. Bremner
  • Publication number: 20210249929
    Abstract: 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: Application
    Filed: February 7, 2020
    Publication date: August 12, 2021
    Applicant: Deere & Company
    Inventor: Ronald D. Bremner
  • Publication number: 20210170857
    Abstract: 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: Application
    Filed: December 9, 2019
    Publication date: June 10, 2021
    Inventors: Stacy K. Worley, Ronald D. Bremner
  • Publication number: 20210062900
    Abstract: 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: Application
    Filed: August 29, 2019
    Publication date: March 4, 2021
    Inventors: Thomas G. Ore, David Mueller, Rainer Gugel, Ronald D. Bremner
  • Patent number: 9062761
    Abstract: 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: Grant
    Filed: October 17, 2013
    Date of Patent: June 23, 2015
    Assignee: Deere & Company
    Inventor: Ronald D. Bremner
  • Publication number: 20150112560
    Abstract: 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: Application
    Filed: October 17, 2013
    Publication date: April 23, 2015
    Applicant: Deere & Company
    Inventor: Ronald D. Bremner
  • Patent number: 5613584
    Abstract: 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: Grant
    Filed: November 14, 1995
    Date of Patent: March 25, 1997
    Assignee: Deere & Company
    Inventors: Ronald D. Bremner, Bruce C. Newendorp, Patricia M. D'Alessandro
  • Patent number: 5327978
    Abstract: 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: Grant
    Filed: January 27, 1993
    Date of Patent: July 12, 1994
    Assignee: Deere & Company
    Inventor: Ronald D. Bremner