Patents Assigned to Qingdao Nianxin Environment Tech Co., Ltd.
  • Longitudinal sleeper and damping railway system thereof
    Patent number: 8727229
    Abstract: A longitudinal sleeper and a damping railway system thereof are provided. The longitudinal sleeper comprises a pair of longitudinal prestressed concrete beams (1) respectively arranged under rails along a longitudinal direction of the rails, and concrete connection boards (2) transversely connected between the pair of the longitudinal prestressed concrete beams (1).
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: May 20, 2014
    Assignee: Qingdao Nianxin Environment Tech Co., Ltd.
    Inventors: Lin Qi, Jing Zeng
  • LONGITUDINAL SLEEPER AND DAMPING RAILWAY SYSTEM THEREOF
    Publication number: 20120286056
    Abstract: A longitudinal sleeper and a damping railway system thereof are provided. The longitudinal sleeper comprises a pair of longitudinal prestressed concrete beams (1) respectively arranged under rails along a longitudinal direction of the rails, and concrete connection boards (2) transversely connected between the pair of the longitudinal prestressed concrete beams (1).
    Type: Application
    Filed: January 25, 2011
    Publication date: November 15, 2012
    Applicant: Qingdao Nianxin Environment Tech Co., Ltd.
    Inventors: Lin Qi, Jing Zeng