Patents by Inventor Bradford P. Liu

Bradford P. Liu 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).

  • Dual electric machine co-drive system with selective booster of electric machine
    Patent number: 10549624
    Abstract: A hybrid drivetrain for a vehicle may include a co-drive manipulator having a first input configured to be driven by an internal combustion engine, and a second input configured to be driven by a first electric machine. The hybrid drivetrain may also include a selective booster having first and second planetary gearsets, each of the first and second planetary gearsets having a rotating component secured for rotation with a rotatable shaft driven by the co-drive manipulator, such that a rotational input received at the second planetary gearset from a second electric machine selectively drives the output shaft with a plurality of gear ratios including at least a speed reduction gear ratio and a speed increasing gear ratio.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: February 4, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Bradford P. Liu
  • DUAL ELECTRIC MACHINE CO-DRIVE SYSTEM WITH SELECTIVE BOOSTER OF ELECTRIC MACHINE
    Publication number: 20190105980
    Abstract: A hybrid drivetrain for a vehicle may include a co-drive manipulator having a first input configured to be driven by an internal combustion engine, and a second input configured to be driven by a first electric machine. The hybrid drivetrain may also include a selective booster having first and second planetary gearsets, each of the first and second planetary gearsets having a rotating component secured for rotation with a rotatable shaft driven by the co-drive manipulator, such that a rotational input received at the second planetary gearset from a second electric machine selectively drives the output shaft with a plurality of gear ratios including at least a speed reduction gear ratio and a speed increasing gear ratio.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 11, 2019
    Inventor: Bradford P. Liu
  • Single-input and single-output hybrid system
    Patent number: 9469184
    Abstract: A hybrid assembly having a single input and a single output. The hybrid assembly is compactly packaged and achieves a wide range of gear ratios. The hybrid assembly may be used in a vehicle power train with or without an additional transmission.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: October 18, 2016
    Assignee: FCA US LLC
    Inventors: Bradford P Liu, Feisel Weslati
  • SINGLE-INPUT AND SINGLE-OUTPUT HYBRID SYSTEM
    Publication number: 20150328975
    Abstract: A hybrid assembly having a single input and a single output. The hybrid assembly is compactly packaged and achieves a wide range of gear ratios. The hybrid assembly may be used in a vehicle power train with or without an additional transmission.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventors: Bradford P. Liu, Feisel Weslati
  • Single input and single-output hybrid system
    Patent number: 9188201
    Abstract: A hybrid assembly for a vehicle is provided having a single input and a single output. The hybrid assembly is compactly packaged and achieves a wide range of gear ratios. The hybrid assembly may be used in a vehicle power train with or without an additional transmission.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: November 17, 2015
    Assignee: FCA US LLC
    Inventors: Bradford P. Liu, Feisel Weslati
  • Single input and single-output hybrid system
    Patent number: 8840501
    Abstract: A hybrid assembly having a single input and a single output is provided. The hybrid assembly may be operated in electronically variable, fixed gear, direct gear, and locked modes.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: September 23, 2014
    Assignee: Chrysler Group LLC
    Inventors: Bradford P. Liu, Feisel Weslati
  • SINGLE-INPUT AND SINGLE-OUTPUT HYBRID SYSTEM
    Publication number: 20140051537
    Abstract: A hybrid assembly for a vehicle is provided having a single input and a single output. The hybrid assembly is compactly packaged and achieves a wide range of gear ratios. The hybrid assembly may be used in a vehicle power train with or without an additional transmission.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: CHRYSLER GROUP LLC
    Inventors: Bradford P. Liu, Feisel Weslati
  • SINGLE-INPUT AND SINGLE-OUTPUT HYBRID SYSTEM
    Publication number: 20140051536
    Abstract: A hybrid assembly having a single input and a single output is provided. The hybrid assembly may be operated in electronically variable, fixed gear, direct gear, and locked modes.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: CHRYSLER GROUP LLC
    Inventors: Bradford P. Liu, Feisel Weslati