Patents by Inventor Mark A. Davis

Mark A. Davis 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: 12145569
    Abstract: Methods and systems are provided for an electric drive train of a hybrid electric vehicle (HEV). In one example, the electric drive train may include a four-node planetary gear set with a first motor coupled to a first input node, a second motor coupled to a second input node and an engine coupled to a third input node of the planetary gear set. The third node is positioned between the first and second input nodes. Torque delivered to each input node is summed at an output node of the four-node planetary gear set.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: November 19, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Jeffrey M. David, Travis J. Miller, Mark A. Davis
  • Patent number: 12130169
    Abstract: Systems for estimating an axle load of a vehicle wherein axle load is estimated in response to an angle between two components of an axle. The angle may change as weight is added to or removed from the axle such that axle load may be determined as a function of the angle.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: October 29, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Mark A. Davis, Anthony N. Passero, Stoyan I. Stoychev
  • Patent number: 12117078
    Abstract: Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes a first barrel cam including a first cam track; a second barrel cam arranged coaxially with the first barrel cam and including a second cam track; a first motor configured to drive the first barrel cam independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: October 15, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Travis J. Miller, Michael D. Cook, Jordan M. Houser, George A. Willford, Mark A. Davis
  • Patent number: 11987117
    Abstract: Methods and systems for an electric drive assembly are provided herein. In one example, an electric drive system is provided that includes two multi-motor drive units with associated planetary gear reductions that have asymmetric gear ratios. The planetary gear reduction in each drive unit includes a ring gear and a sun gear that are rotationally coupled to a pair of motors and a carrier rotationally coupled to an output gear that interfaces with a gear reduction of an axle assembly.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: May 21, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Jeffrey M. David, Mark A. Davis, Darren J. Ziskovsky, Aaron D. Gries, Jordan M. Houser
  • Patent number: 11927263
    Abstract: Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes a first barrel cam including a first cam track; a second barrel cam arranged coaxially with the first barrel cam and including a second cam track; a first motor configured to drive the first barrel cam independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: March 12, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Michael D. Cook, Mark A. Davis, Jordan M. Houser, Travis J. Miller, George A. Willford
  • Patent number: 11884161
    Abstract: Methods and systems are provided for an electric drive train of a vehicle. In one example, a method may include operating a first motor of a set of motors in a torque control mode at a first speed while operating a second motor of the set of motors in a speed control mode at a second speed. The second speed may be determined based on the first speed and torque may be summed at an output node of a planetary gear set coupled to each of the set of motors.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: January 30, 2024
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Jeffrey M. David, Travis J. Miller, Mark A. Davis
  • Patent number: 11850946
    Abstract: Methods and systems for an electric drive assembly are provided herein. In one example, a method for operation of an electric drive system is provided that includes coordinating operation of a first electric drive unit and a second electric drive unit based on a first power request. In the system, each of the first and second electric drive units include a planetary gear reduction that delivers power from a pair of motors to a set of axle shafts, and the planetary gear reductions have asymmetric gear ratios.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: December 26, 2023
    Assignee: DANA HEAVY VEHICLE SYSTEMS GROUP, LLC
    Inventors: Jeffrey M. David, Mark A. Davis, Darren J. Ziskovsky, Aaron D. Gries, Jordan M. Houser
  • Patent number: 11692626
    Abstract: Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes a first barrel cam including a first cam track; a second barrel cam arranged coaxially with the first barrel cam and including a second cam track; a first motor configured to drive the first barrel cam independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: July 4, 2023
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Travis J. Miller, Michael D. Cook, Jordan M. Houser, George A. Willford, Mark A. Davis
  • Patent number: 11673463
    Abstract: Methods and systems for an electric motor system are provided. In one example, a motor system is provided which comprises a first electric machine rotationally coupled to a second electric machine by a planetary gear set that has three components: a ring gear, a sun gear, and a carrier with a plurality of planet gears. In the system, the first electric machine varies in size from the second electric machine and one of the planetary assembly components is permanently grounded.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 13, 2023
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Langston H. Corn, Mark A. Davis, Jordan M. Houser, Darren J. Ziskovsky
  • Patent number: 11530747
    Abstract: Various methods and systems are provided for a shift assembly for a vehicle transmission. In one example, a shift assembly for a transmission includes a first barrel cam including a first cam track; a second barrel cam arranged coaxially with the first barrel cam and including a second cam track; a first motor configured to drive the first barrel cam independent of the second barrel cam; and a second motor configured to drive the second barrel cam independent of the first barrel cam.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: December 20, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Travis J. Miller, Michael D. Cook, Jordan M. Houser, George A. Willford, Mark A. Davis
  • Patent number: 11529869
    Abstract: Methods and systems for an electric drive assembly are provided herein. In one example, an electric drive system is provided that includes two multi-motor drive units with associated planetary gear reductions that have asymmetric gear ratios. The planetary gear reduction in each drive unit includes a ring gear and a sun gear that are rotationally coupled to a pair of motors and a carrier rotationally coupled to an output gear that interfaces with a gear reduction of an axle assembly.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: December 20, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Jeffrey M. David, Mark A. Davis, Darren J. Ziskovsky, Aaron D. Gries, Jordan M. Houser
  • Patent number: 11519776
    Abstract: Methods and systems for estimating an axle load of a vehicle are described. In one example, a method is disclosed wherein axle load is estimated in response to an angle between two components of an axle. The angle may change as weight is added to or removed from the axle such that axle load may be determined as a function of the angle.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: December 6, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Mark A. Davis, Anthony N. Passero, Stoyan I. Stoychev
  • Patent number: 11420613
    Abstract: Methods and systems are provided for an electric drive train of a hybrid electric vehicle (HEV). In one example, the electric drive train may include a four-node planetary gear set with a first motor coupled to a first input node, a second motor coupled to a second input node and an engine coupled to a third input node of the planetary gear set. The third node is positioned between the first and second input nodes. Torque delivered to each input node is summed at an output node of the four-node planetary gear set.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: August 23, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Jeffrey M. David, Travis J. Miller, Mark A. Davis
  • Patent number: 10843723
    Abstract: A steer-by-wire steering system having an I-beam and a steering gear housing coupled therewith. An input shaft assembly may be at least partially disposed within the steering gear housing. A steering knuckle having a kingpin boss and an output shaft having a first end at least partially disposed within the kingpin boss. A second end of the output shaft at least partially disposed within the steering gear housing.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 24, 2020
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Mark A. Davis, Stoyan I. Stoychev
  • Patent number: 10731284
    Abstract: A laundry treating appliance having a cabinet, a wash tub located within the cabinet and defining an interior, a wash basket mounted within the wash tub and defining a laundry treating chamber. A clothes mover or agitator can be located within and rotatable relative to and/or with the wash basket having a cap removably mounted to the clothes mover. The cap includes a treating chemistry dispenser system.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: August 4, 2020
    Assignee: Whirlpool Corporation
    Inventors: Benjamin E. Alexander, Scott E. Carpenter, Mark A. Davis
  • Publication number: 20200055541
    Abstract: A steer-by-wire steering system having an I-beam and a steering gear housing coupled therewith. An input shaft assembly may be at least partially disposed within the steering gear housing. A steering knuckle having a kingpin boss and an output shaft having a first end at least partially disposed within the kingpin boss. A second end of the output shaft at least partially disposed within the steering gear housing.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 20, 2020
    Inventors: Mark A. Davis, Stoyan I. Stoychev
  • Patent number: 10494015
    Abstract: A steer-by-wire steering system having an I-beam and a steering gear housing coupled therewith. An input shaft assembly may be at least partially disposed within the steering gear housing. A steering knuckle having a kingpin boss and an output shaft having a first end at least partially disposed within the kingpin boss. A second end of the output shaft at least partially disposed within the steering gear housing.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: December 3, 2019
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Mark A. Davis, Stoyan I. Stoychev
  • Publication number: 20190270380
    Abstract: Provided herein is a tandem axle system including a top-mount forward axle assembly, a rear axle assembly and an intermediate drive shaft assembly.
    Type: Application
    Filed: June 29, 2018
    Publication date: September 5, 2019
    Inventors: Mark A. Davis, Steven G. Slesinski
  • Publication number: 20180319278
    Abstract: Provided herein in a method of disconnecting and connecting a tandem axle system, the method including the steps of: providing a tandem axle system including a primary clutch in driving engagement with a prime mover, an inter-axle differential and clutch assembly including an inter-axle differential and an inter-axle differential lock in selective driving engagement with the primary clutch, a forward axle assembly having a disconnect assembly, a rear axle assembly having a disconnect assembly, and a control system in communication with the inter-axle differential lock, the differential lock assembly, and the disconnect assemblies; disconnecting the disconnect assemblies of the forward and rear axle assemblies; engaging the inter-axle differential lock; disengaging the primary clutch; matching rotational speeds of the axle half shafts disconnect assemblies of the front and rear axle assemblies; connecting the disconnect assemblies of the forward and rear axle assemblies; and engaging the primary clutch.
    Type: Application
    Filed: May 2, 2018
    Publication date: November 8, 2018
    Inventors: Mark A. Davis, Steven G. Slesinski, George A. Willford
  • Publication number: 20180086376
    Abstract: A steer-by-wire steering system having an I-beam and a steering gear housing coupled therewith. An input shaft assembly may be at least partially disposed within the steering gear housing. A steering knuckle having a kingpin boss and an output shaft having a first end at least partially disposed within the kingpin boss. A second end of the output shaft at least partially disposed within the steering gear housing.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 29, 2018
    Inventors: Mark A. Davis, Stoyan I. Stoychev