Patents Assigned to Yidong Wang
  • Safety angle cock
    Publication number: 20060255655
    Abstract: A safety angle cock air-bleeding in a multi-mode and having a ball core revolved in a single direction is of switch valves used in a train air brake system.
    Type: Application
    Filed: November 4, 2005
    Publication date: November 16, 2006
    Applicant: Yidong Wang
    Inventors: Yidong Wang, Shicheng Wang