Patents by Inventor Zhongji SUN

Zhongji SUN 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).

  • Hopper for powder bed fusion additive manufacturing
    Patent number: 10835956
    Abstract: A hopper for powder bed fusion additive manufacturing, the hopper comprising: a recoater having a volume for holding powder metal therein; the recoater having a dispensing opening for depositing therethrough powder metal from the volume, a divider dividing the volume into a first compartment and a second compartment and dividing the dispensing opening into a first opening portion and a second opening portion; and a first roller arranged in parallel with a second roller, the first roller provided at the first opening portion and the second roller provided at the second opening portion, a longitudinal axis of the first roller being perpendicular to direction of movement of the hopper during powder metal deposition; wherein rotation of the first roller and rotation of the second roller dispenses a first powder metal and a second powder metal from the first compartment and the second compartment respectively through the first opening portion and the second opening portion respectively, and wherein the first rolle
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: November 17, 2020
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Zhongji Sun, Swee Leong Sing, Chee Kai Chua, Zhonghong Alexander Liu
  • HOPPER FOR POWDER BED FUSION ADDITIVE MANUFACTURING
    Publication number: 20180354035
    Abstract: A hopper for powder bed fusion additive manufacturing, the hopper comprising: a recoater having a volume for holding powder metal therein; the recoater having a dispensing opening for depositing therethrough powder metal from the volume, a divider dividing the volume into a first compartment and a second compartment and dividing the dispensing opening into a first opening portion and a second opening portion; and a first roller arranged in parallel with a second roller, the first roller provided at the first opening portion and the second roller provided at the second opening portion, a longitudinal axis of the first roller being perpendicular to direction of movement of the hopper during powder metal deposition; wherein rotation of the first roller and rotation of the second roller dispenses a first powder metal and a second powder metal from the first compartment and the second compartment respectively through the first opening portion and the second opening portion respectively, and wherein the first rolle
    Type: Application
    Filed: July 25, 2016
    Publication date: December 13, 2018
    Inventors: Zhongji SUN, Swee Leong SING, Chee Kai CHUA, Zhonghong Alexander LIU