Patents by Inventor Yiwu DU

Yiwu DU 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).

  • Drum for simulating road surfaces
    Patent number: 9709464
    Abstract: The present invention provides a drum of a wheel tester, which is characterized in that an outer surface of the drum has cyclic corrugations parallel to a cross section of the drum, wherein the cyclic corrugation in one cycle on the outer surface is composed of a concave arc and a convex arc, both of which are tangential in ends and equal in diameter, and one cycle is 30 to 50 mm in length and 1 to 1.5 mm in depth. The drum is easy to machine, reduced in cost, increased in friction force and suitable for simulating various road surfaces.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: July 18, 2017
    Assignee: CITIC Dicastal CO., LTD
    Inventors: Chunhai Liu, Shide Li, Zhigao Yin, Qiang Liu, Hongwei Sheng, Yiwu Du, Yongning Wang, Zhihua Zhu, Changhai Li
  • DRUM FOR SIMULATING ROAD SURFACES
    Publication number: 20160231200
    Abstract: The present invention provides a drum of a wheel tester, which is characterized in that an outer surface of the drum has cyclic corrugations parallel to a cross section of the drum, wherein the cyclic corrugation in one cycle on the outer surface is composed of a concave arc and a convex arc, both of which are tangential in ends and equal in diameter, and one cycle is 30 to 50 mm in length and 1 to 1.5 mm in depth. The drum is easy to machine, reduced in cost, increased in friction force and suitable for simulating various road surfaces.
    Type: Application
    Filed: February 9, 2016
    Publication date: August 11, 2016
    Applicant: CITIC Dicastal CO., LTD
    Inventors: Chunhai LIU, Shide LI, Zhigao YIN, Qiang LIU, Hongwei SHENG, Yiwu DU, Yongning WANG, Zhihua ZHU, Changhai LI