Patents by Inventor Duc Q. Phan

Duc Q. Phan 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 voltage-source inverter system and method
    Patent number: 8203236
    Abstract: Systems and methods are disclosed for a dual voltage-source inverter system. The systems and methods selectively couple a first voltage source and a second voltage source to an inverter via a controllable switch.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 19, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Gabriel Gallegos-Lopez, Milun Perisic, Silva Hiti, George John, Gregory S. Smith, Khiet Le, Duc Q. Phan
  • Damping mechanisms and motor assemblies
    Patent number: 7987952
    Abstract: Damping mechanisms and motor assemblies are provided. In an embodiment, by way of example only, a damping mechanism includes an end cap, a bearing retainer plate, a bearing damper ring, a bearing assembly, and first and second lateral dampers. The bearing damper ring is disposed in an annular cavity inwardly from an inner diameter surface of the end cap and has a radially inwardly-extending flange. The bearing assembly is disposed in the annular cavity radially inwardly relative to the bearing damper ring. The first lateral damper is disposed between a radially inwardly-extending wall of the end cap and the bearing damper ring. The second lateral damper is disposed between the bearing damper ring and the bearing retainer plate.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: August 2, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Duc Q. Phan, Khiet Le, Terence G. Ward, Yunqi Zheng, Gabriel Gallegos-Lopez, Dang Dinh Dang
  • DUAL VOLTAGE-SOURCE INVERTER SYSTEM AND METHOD
    Publication number: 20110115294
    Abstract: Systems and methods are disclosed for a dual voltage-source inverter system. The systems and methods selectively couple a first voltage source and a second voltage source to an inverter via a controllable switch.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 19, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: GABRIEL GALLEGOS-LOPEZ, MILUN PERISIC, SILVA HITI, GEORGE JOHN, GREGORY S. SMITH, KHIET LE, DUC Q. PHAN
  • DAMPING MECHANISMS AND MOTOR ASSEMBLIES
    Publication number: 20110095163
    Abstract: Damping mechanisms and motor assemblies are provided. In an embodiment, by way of example only, a damping mechanism includes an end cap, a bearing retainer plate, a bearing damper ring, a bearing assembly, and first and second lateral dampers. The bearing damper ring is disposed in an annular cavity inwardly from an inner diameter surface of the end cap and has a radially inwardly-extending flange. The bearing assembly is disposed in the annular cavity radially inwardly relative to the bearing damper ring. The first lateral damper is disposed between a radially inwardly-extending wall of the end cap and the bearing damper ring. The second lateral damper is disposed between the bearing damper ring and the bearing retainer plate.
    Type: Application
    Filed: October 28, 2009
    Publication date: April 28, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: DUC Q. PHAN, KHIET LE, TERENCE G. WARD, YUNQI ZHENG, GABRIEL GALLEGOS-LOPEZ, DANG DINH DANG