Patents by Inventor Gui LI

Gui LI 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).

  • SURFACE FLATNESS TESTING DEVICE AND METHOD THEREOF
    Publication number: 20080225280
    Abstract: An exemplary surface flatness testing device (10) includes a light emitting unit (11), a light receiving unit (12), a platform (13), an adjusting unit (14) and a processing unit (15). The light receiving unit faces the light emitting unit. The platform is located between the light emitting unit and the light receiving unit, which is configured for holding a workpiece (18) having a testing surface (181). The adjusting unit is disposed between the light emitting unit and the light receiving unit. The adjusting unit and the testing surface of the workpiece are controlling light from the light emitting unit to the light receiving unit. The processing unit is configured for processing signals from the light receiving unit. The present invention also provides a surface flatness testing method.
    Type: Application
    Filed: August 28, 2007
    Publication date: September 18, 2008
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventors: SHUN JIANG, GUI-LI DONG