Patents by Inventor Liangrong Li

Liangrong 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).

  • Distributing valve for concrete pump and the concrete pump
    Patent number: 9188112
    Abstract: A distributing valve for a concrete pump and the concrete pump are provided, the distributing valve comprises a valve body (200) and a valve core (300), and a delivering cavity (213) is internally formed in the valve body (200) and is provided with a material inlet, a material outlet (212) and material suction openings (251,252). The material outlet (212) is communicated with a delivery pipe and the material suction opening (251,252) is communicated with a delivery cylinder (500). The valve core (300) is a L-shaped pipe formed by a first pipe section (310) and a second pipe section (320), and one end of the L-shaped pipe is connected with a hopper (600) and a revolution fitting surface is formed between the end face of the other end of the L-shaped pipe and the internal face of the valve body (200).
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: November 17, 2015
    Assignees: HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD., SANY HEAVY INDUSTRY CO., LTD.
    Inventors: Xiaogang Yi, Hong Zhu, Liangrong Li
  • DISTRIBUTING VALVE FOR CONCRETE PUMP AND THE CONCRETE PUMP
    Publication number: 20130034457
    Abstract: A distributing valve for a concrete pump and the concrete pump are provided, the distributing valve comprises a valve body (200) and a valve core (300), and a delivering cavity (213) is internally formed in the valve body (200) and is provided with a material inlet, a material outlet (212) and material suction openings (251,252). The material outlet (212) is communicated with a delivery pipe and the material suction opening (251,252) is communicated with a delivery cylinder (500). The valve core (300) is a L-shaped pipe formed by a first pipe section (310) and a second pipe section (320), and one end of the L-shaped pipe is connected with a hopper (600) and a revolution fitting surface is formed between the end face of the other end of the L-shaped pipe and the internal face of the valve body (200).
    Type: Application
    Filed: April 18, 2011
    Publication date: February 7, 2013
    Applicants: SANY HEAVY INDUSTRY CO., LTD., HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD.
    Inventors: Xiaogang Yi, Hong Zhu, Liangrong Li