Patents by Inventor Zhanghe Song

Zhanghe Song 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).

  • Electric motors having EMI reducing circuits and methods therefor
    Patent number: 8552615
    Abstract: An electric motor having a circuit for reducing electromagnetic interference (EMI) includes a field stack such as a stator, an armature including a shaft, a commutator mounted on the shaft, and an armature core electrically connected to the commutator, whereby the armature core is rotatably mounted within the field stack. The electric motor includes a brush assembly adapted to deliver electrical power to the commutator. The circuit includes a delta capacitor network and a conductive lead electrically interconnecting the delta capacitor network and the brush assembly. In one embodiment, the circuit includes motor field windings or coils, and a power source electrically interconnectable with the delta capacitor network and the motor field windings. In one embodiment, the motor is a universal motor.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: October 8, 2013
    Assignee: Black & Decker Inc.
    Inventors: Jiangang Zhao, Paik Gu, Zhanghe Song, Shengjian Liu
  • ELECTRIC MOTORS HAVING EMI REDUCING CIRCUITS AND METHODS THEREFOR
    Publication number: 20110018377
    Abstract: An electric motor having a circuit for reducing electromagnetic interference (EMI) includes a field stack such as a stator, an armature including a shaft, a commutator mounted on the shaft, and an armature core electrically connected to the commutator, whereby the armature core is rotatably mounted within the field stack. The electric motor includes a brush assembly adapted to deliver electrical power to the commutator. The circuit includes a delta capacitor network and a conductive lead electrically interconnecting the delta capacitor network and the brush assembly. In one embodiment, the circuit includes motor field windings or coils, and a power source electrically interconnectable with the delta capacitor network and the motor field windings. In one embodiment, the motor is a universal motor.
    Type: Application
    Filed: June 17, 2010
    Publication date: January 27, 2011
    Applicant: Black & Decker Inc.
    Inventors: Jiangang Zhao, Paik Gu, Zhanghe Song, Shengjian Liu