Patents by Inventor Steven R. Fliearman

Steven R. Fliearman 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: 11359352
    Abstract: A hydraulic system for a work vehicle has a first hydraulic circuit at a first nominal pressure and a second hydraulic circuit at a second nominal pressure different than the first nominal pressure. A dual-chamber hydraulic reservoir includes a first tank associated with the first hydraulic circuit and defining a first opening and a second tank associated with the second hydraulic circuit and defining a second opening. An exchange system has a particulate filter disposed within an exchange path between the first opening of the first tank and the second opening of the second tank. The exchange system is configured to resupply the first tank with hydraulic fluid from the second tank.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 14, 2022
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Michael J. Cliff
  • Patent number: 11326570
    Abstract: A combination starter-generator device includes a power transmission assembly with first and second planetary gear set stages. One or more of the planetary gear set stages includes an idler gear and a ring gear. A clutch arrangement is coupled to effect a delivery mode in which power flows in a first power flow direction and a generation mode in which power flows in a second power flow direction. In delivery mode, input power is received in the first rotational direction from the electric machine and output power is provided in the first rotational direction to the engine as the first power flow direction. In generation mode, one or more of the planetary gear set stages receives input power in the first rotational direction and outputs power in the first rotational direction to the electric machine as the second power flow direction.
    Type: Grant
    Filed: October 26, 2020
    Date of Patent: May 10, 2022
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Lisa R. Lloyd, Jeffrey S. Turner, Douglas S. Base
  • Publication number: 20220136530
    Abstract: Systems, methods, and apparatuses for operating a machine using energy stored in a compressed gas are disclosed. Energy stored in the compressed gas may be used to pressurize a fluid, such as transmission fluid, and the pressurized fluid may be used to effectuate an operation of the machine, such as a transmission, and the operation of the machine may involve shifting of the transmission. The gas may be compressed by a first fluid using a second fluid, and the two fluids are be prevented from being mixed together.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 5, 2022
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Publication number: 20220128023
    Abstract: A combination starter-generator device includes a power transmission assembly with first and second planetary gear set stages. One or more of the planetary gear set stages includes an idler gear and a ring gear. A clutch arrangement is coupled to effect a delivery mode in which power flows in a first power flow direction and a generation mode in which power flows in a second power flow direction. In delivery mode, input power is received in the first rotational direction from the electric machine and output power is provided in the first rotational direction to the engine as the first power flow direction. In generation mode, one or more of the planetary gear set stages receives input power in the first rotational direction and outputs power in the first rotational direction to the electric machine as the second power flow direction.
    Type: Application
    Filed: October 26, 2020
    Publication date: April 28, 2022
    Inventors: Steven R. Fliearman, Lisa R. Lloyd, Jeffrey S. Turner, Douglas S. Base
  • Publication number: 20220118848
    Abstract: A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening extending along a pivot axis and wheel end openings extending along associated wheel end axes. The tandem wheel housing is pivotally mounted to a chassis of the work vehicle about the pivot axis. A center sprocket is rotatably disposed within the tandem wheel housing. Wheel end assemblies are disposed at the wheel end openings and each includes a wheel end sprocket, a wheel end gear train, and a wheel end hub. A pair of reaction bars are being pivotally coupled at first ends to the chassis and at second ends to a component of the respective wheel end assembly. A pivot dampening system is positioned, at least in part, axially between the tandem wheel housing and either the chassis or the component of at least one of the wheel end assemblies. The pivot dampening system is configured to dampen the pivoting of the tandem wheel housing tandem wheel housing relative to the chassis.
    Type: Application
    Filed: October 20, 2020
    Publication date: April 21, 2022
    Inventors: Steven R. Fliearman, Prashant Shinde
  • Publication number: 20220111726
    Abstract: A tandem wheel assembly includes a tandem wheel housing having a center opening extending along a pivot axis, and wheel end openings extending along associated wheel axes. A pivot cage is configured to fixedly mount to a chassis of a vehicle and is disposed about the pivot axis at the center opening. A center sprocket is disposed within and rotatable with respect to the pivot cage. A wheel end assembly is disposed at each wheel end opening and has a wheel end sprocket, a wheel end gear train, and a wheel end hub. Each wheel end gear train is coupled for rotation by the wheel end sprocket and rotates the wheel end hub about the wheel end axis. A pair of reaction bars are pivotally coupled to the pivot cage at one end and to a component of the wheel end gear train at the other end.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 14, 2022
    Inventors: Steven R. Fliearman, Prashant Shinde
  • Publication number: 20220098827
    Abstract: A drive assembly for a work vehicle includes an electric machine input arrangement with a first electric machine configured to generate a first source of power, an electric machine input gear assembly configured to receive the first source of power from the first electric machine, and a second electric machine configured to generate a second source of power. The drive assembly further includes a combination gear arrangement coupled to selectively receive the first source of power from the electric machine input gear assembly and the second source of power from the second electric machine to produce a combined power; and an electric machine output arrangement configured to receive and transfer the combined power from the combination gear arrangement.
    Type: Application
    Filed: September 25, 2020
    Publication date: March 31, 2022
    Inventors: Steven R. Fliearman, Jeffrey S. Turner, Douglas S. Base
  • Publication number: 20220064907
    Abstract: A hydraulic system for a work vehicle has a first hydraulic circuit at a first nominal pressure and a second hydraulic circuit at a second nominal pressure different than the first nominal pressure. A dual-chamber hydraulic reservoir includes a first tank associated with the first hydraulic circuit and defining a first opening and a second tank associated with the second hydraulic circuit and defining a second opening. An exchange system has a particulate filter disposed within an exchange path between the first opening of the first tank and the second opening of the second tank. The exchange system is configured to resupply the first tank with hydraulic fluid from the second tank.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 3, 2022
    Inventors: Steven R. Fliearman, Michael J. Cliff
  • Patent number: 11248681
    Abstract: A torsional fuse in a drivetrain system, an epicyclic gear system, and a method of operating a drivetrain system are provided. The epicyclic gear system includes a housing, a shaft configured to rotate relative to the housing, a sun gear being disposed concentric to the shaft, a plurality of planet gears disposed around the sun gear, a ring gear disposed around the plurality of planet gears, a carrier connecting the plurality of planet gears, and a torsional fuse defined by an interface between a first torsional fuse portion and a second torsional fuse portion, the torsional fuse being configured to allow rotation between the first torsional fuse portion and the second torsional fuse portion upon application of a threshold torque at the torsional fuse.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: February 15, 2022
    Assignee: DEERE & COMPANY
    Inventors: Douglas S. Base, Steven R. Fliearman
  • Publication number: 20220025614
    Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.
    Type: Application
    Filed: July 21, 2020
    Publication date: January 27, 2022
    Applicant: Deere & Company
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Patent number: 11230822
    Abstract: A hydraulic supply system provides hydraulic power to functional systems of a work vehicle and includes first and second hydraulic circuits. The first hydraulic circuit includes a first fluid pump operable to generate a first hydraulic fluid, a pressure storage reservoir coupled with the first fluid pump, and a first port coupled with the first fluid pump and with the pressure storage reservoir operable to store a reserve hydraulic fluid. The first port delivers a boost hydraulic fluid from the first circuit for use by the work vehicle to operate a first functional system of the work vehicle. The second hydraulic circuit includes a second fluid pump that generates a second hydraulic fluid, and a second port coupled with the second fluid pump delivers the second hydraulic fluid from the second hydraulic circuit for use by the work vehicle to operate a second functional system of the work vehicle.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: January 25, 2022
    Assignee: Deere & Company
    Inventors: Michael J. Cliff, Steven R. Fliearman
  • Publication number: 20220016975
    Abstract: A tandem wheel assembly for a work vehicle includes a tandem wheel housing having a center opening disposed about a pivot axis and first and second wheel end openings disposed about associated first and second wheel axes that are substantially parallel with the pivot axis. A center sprocket within the tandem wheel housing is rotatable about the pivot axis. First and second wheel end assemblies include first and second wheel end shafts, sprockets and housings. The first and second wheel end sprockets are mounted to the associated shafts and are aligned to engage the center sprocket with at least one chain which transfers rotation of the center sprocket about the pivot axis to rotate the first and second wheel end sprockets about the associated first and second wheel axes. The first and second wheel end housings support the first and second wheel end shafts for relative rotation about the associated first and second wheel axes.
    Type: Application
    Filed: February 26, 2021
    Publication date: January 20, 2022
    Inventors: Steven R. Fliearman, Gordon E. Miller, Jackson Baca, Prashant Shinde
  • Patent number: 11193560
    Abstract: A drive assembly for a work vehicle includes a drive housing including a first housing element forming a reaction member; a drive shaft; a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element in the first rotation direction and in the second rotation direction; a first clutch arrangement including a first clutch ring and a second clutch ring; and a second clutch arrangement to interface with the planetary gear set to selectively effect a second rotation speed of the output element in the first rotation direction and in the second rotation direction. The first clutch ring is configured to effect a first rotation speed of the output element in the second rotation direction and the second clutch ring is configured to effect the first rotation speed of the output element in the first rotation direction.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: December 7, 2021
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Clayton G. Janasek, Lisa R. Lloyd
  • Publication number: 20210372503
    Abstract: A drive assembly for a work vehicle includes a drive housing including a first housing element forming a reaction member; a drive shaft; a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element in the first rotation direction and in the second rotation direction; a first clutch arrangement including a first clutch ring and a second clutch ring; and a second clutch arrangement to interface with the planetary gear set to selectively effect a second rotation speed of the output element in the first rotation direction and in the second rotation direction. The first clutch ring is configured to effect a first rotation speed of the output element in the second rotation direction and the second clutch ring is configured to effect the first rotation speed of the output element in the first rotation direction.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Inventors: Steven R. Fliearman, Clayton G. Janasek, Lisa R. Lloyd
  • Publication number: 20210372504
    Abstract: A bi-directional drive assembly for a work vehicle has a reaction member fixed with respect to or a part of a drive housing. A driveshaft is rotatable about a drive axis relative to the reaction member in a first rotation direction and alternatively in a second rotation direction. A planetary set is coupled to the drive shaft and configured to rotate an output hub in the first or second rotation direction. A clutch assembly is coupled to the reaction member and includes a first clutch and a second clutch. The first clutch is configured to interface the planetary set with the reaction member to effect a first rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction. The second clutch is configured to interface the planetary set with the reaction member to effect a second rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 2, 2021
    Inventors: Steven R. Fliearman, Lisa R. Lloyd
  • Patent number: 11156270
    Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine and a gear set configured to receive rotational input from the electric machine and the engine. The gear set includes a ring gear formed by a cylindrical base with a perimeter surface facing the engine and a circumferential row of castellations extending in a radial direction from the perimeter surface. The starter-generator device further includes a mounting arrangement comprising a drive plate configured to be secured to a crank shaft of the engine and a flex plate mounted to the drive plate. The flex plate includes a row of engagement apertures configured to receive the castellations of the ring gear to rotationally couple the ring gear to the engine via the mounting arrangement.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 26, 2021
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Lisa R. Lloyd
  • Publication number: 20210323616
    Abstract: A tandem wheel assembly or kit has a housing that includes a central chain box, a first wheel end casing, and a second wheel end casing. The central chain box has an internal volume extending between a first box end and a second box end, a unitary pivot portion having a box opening disposed about a pivot axis, a first box flange with a first box flange face and a second box flange with a second box flange face. The first wheel end casing has a first wheel end flange with a first wheel end flange face mateable with the first box flange face, a first wheel end opening, and defines a first length. The second wheel end casing has a second wheel end flange with a second wheel end flange face mateable with the second box flange face, a second wheel end opening, and defines a second length.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 21, 2021
    Inventors: Steven R. Fliearman, Jackson Baca, Prashant Shinde
  • Patent number: 11125319
    Abstract: A limited oil displacement system is positioned within a tandem housing of a tandem of a work vehicle. The tandem includes a tandem oil where a chain assembly is at least partially submerged. The limited oil displacement system may include one or more oil displacement unit used for displacing the tandem oil. The oil displacement unit has an upper portion and a lower portion coupled to and positioned under the upper portion. A volume of the upper portion is larger than a volume of the lower portion such that when the tandem of the work vehicle pivots about a lateral axis, the oil displacement unit displaces the tandem oil more than when the tandem of the work vehicle remains horizontally.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 21, 2021
    Assignee: Deere & Company
    Inventors: Prashant Shinde, Steven R. Fliearman, Isaiah Janzen
  • Patent number: 11060496
    Abstract: A combination starter-generator device is provided for a work vehicle having an engine. The starter-generator device includes an electric machine; and a gear set configured to receive rotational input from the electric machine and from the engine and to couple the electric machine and the engine in a first power flow direction and a second power flow direction. The gear set is configured to operate in one of multiple relatively high-torque, low-speed start gear ratios in the first power flow direction and a relatively low-torque, high-speed gear ratio in the second power flow direction.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: July 13, 2021
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Lisa R. Lloyd, Jeffrey S. Turner
  • Patent number: 11015662
    Abstract: A clutch assembly includes a housing, a rotational member configured to rotate relative to the housing about an axis, and a clutch pack coupled between the housing and the rotational member. The clutch pack is configured to regulate movement of the rotational member relative to the housing. The clutch pack includes a speed sensor ring coupled to the rotational member such that the speed sensor ring is configured to rotate with the rotational member about the axis. The clutch assembly includes a sensor in communication with the speed sensor ring. The sensor is configured to measure an angular velocity of the rotational member relative to the housing.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: May 25, 2021
    Assignee: DEERE & COMPANY
    Inventors: Steven R. Fliearman, Jeffrey S. Turner, Austin B. Stephens, Kevin M. Allen, Jacob E. Morris