Patents by Inventor Zheng Liang Liu

Zheng Liang 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).

  • Base for heat sink
    Patent number: 6864572
    Abstract: A heat sink base (10) includes a rectangular body (11) made of aluminum and a circular core (12) made of copper. The body defines a circular through opening (111). A diameter of the opening is slightly less than a diameter of the core. The core is attached within the body according to the following steps: a) pressing the core into the through opening of the body; b) stamping the core to cause it to plastically deform in radial directions and thereby become firmly combined with the body; and c) removing any burring of the core flowing out from the opening such that surfaces of the core and the body are coplanarly smooth.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: March 8, 2005
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Cheng Chi Lee, Xue Jin Fu, Zheng Liang Liu, Wen Qiu Deng
  • Base for heat sink
    Publication number: 20030037433
    Abstract: A heat sink base (10) includes a rectangular body (11) made of aluminum and a circular core (12) made of copper. The body defines a circular through opening (111). A diameter of the opening is slightly less than a diameter of the core. The core is attached within the body according to the following steps: a) pressing the core into the through opening of the body; b) stamping the core to cause it to plastically deform in radial directions and thereby become firmly combined with the body; and c) removing any burring of the core flowing out from the opening such that surfaces of the core and the body are coplanarly smooth.
    Type: Application
    Filed: August 24, 2001
    Publication date: February 27, 2003
    Inventors: Cheng Chi Lee, Xue Jin Fu, Zheng Liang Liu, Wen Qiu Deng