Patents by Inventor Shaofan Zeng

Shaofan Zeng 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).

  • Semi-trailer support loading nut
    Patent number: 8622677
    Abstract: A semi-trailer leg loading nut includes a screwed hole provided on a nut column and connecting two ends of the nut. Said nut is a two-layered structure formed of a top layer and an under layer or a three-layered structure formed of a top layer, an intermediate layer and an under layer. The outer outline of at least two layers of the nut is a square with the same cutting angle. The side length of the two layers of squares is equal. The outer outline projection of the two layers of squares overlap with each other along the column axis direction. The outer outline projection of the other layer is within the overlapped projection of the two layers along the column axis direction. A funneled oil cup or an oil groove is provided on the top layer of the nut and communicates with the screwed hole. A bottom of the under layer of the nut is plane and is pressed on a loading plate in a quadrate pipe to transfer load.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: January 7, 2014
    Assignee: Guangdong Fuwa Engineering Manufacturing Co., Ltd.
    Inventors: Zhiqiang Wu, Shaofan Zeng, Xiangyong Zhong
  • Semi-Trailer Support Loading Nut
    Publication number: 20110188968
    Abstract: A semi-trailer leg loading nut includes a screwed hole provided on a nut column and connecting two ends of the nut. Said nut is a two-layered structure formed of a top layer and an under layer or a three-layered structure formed of a top layer, an intermediate layer and an under layer. The outer outline of at least two layers of the nut is a square with the same cutting angle. The side length of the two layers of squares is equal. The outer outline projection of the two layers of squares overlap with each other along the column axis direction. The outer outline projection of the other layer is within the overlapped projection of the two layers along the column axis direction. A funneled oil cup or an oil groove is provided on the top layer of the nut and communicates with the screwed hole. A bottom of the under layer of the nut is plane and is pressed on a loading plate in a quadrate pipe to transfer load.
    Type: Application
    Filed: May 23, 2008
    Publication date: August 4, 2011
    Applicant: GUANGDONG FUWA ENGINEERING MANUFACTURING CO., LTD.
    Inventors: Zhiqiang Wu, Shaofan Zeng, Xiangyong Zhong
  • Nut for semi-trailer leg
    Patent number: D592493
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: May 19, 2009
    Assignee: Guangdong Fuwa Engineering Manufacturing Co., Ltd.
    Inventors: Zhiqiang Wu, Shaofan Zeng, Xiangyong Zhong
  • Semi-trailer leg
    Patent number: D636297
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: April 19, 2011
    Assignee: Guangdong Fuwa Engineering Manufacturing Co., Ltd.
    Inventors: Zhiqiang Wu, Shaofan Zeng, Xiangyong Zhong