Patents by Inventor Long Hing Tang

Long Hing Tang 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).

  • Centrifugal pump with outlet flow passage of increasing cross-section
    Patent number: 8939719
    Abstract: A centrifugal pump includes a motor having an output shaft, a volute mounted at one side of the motor and an impeller which is located inside the volute and attached to the output shaft. The volute has an inlet arranged along the axial direction, an oulet arranged along the lateral direction and a flow channel arranged along the circumferential direction. The flow channel has a spiral shape. The cross-sectional area of the flow channel increases towards the outlet.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: January 27, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Ying Juan Wan, Long Hing Tang
  • CENTRIFUGAL PUMP
    Publication number: 20110129337
    Abstract: A centrifugal pump comprises: a motor having an output shaft, a volute mounted at one side of the motor and an impeller which is located inside the volute and attached to the output shaft. The volute has an inlet arranged along the axial direction, an outlet arranged along the lateral direction and a flow channel arranged along the circumferential direction. The flow channel has a spiral shape. The cross-sectional area of the flow channel increases towards the outlet.
    Type: Application
    Filed: November 24, 2010
    Publication date: June 2, 2011
    Inventors: Ying Juan WAN, Long Hing Tang