Patents by Inventor ZULIN LIU

ZULIN LIU 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).

  • Hydraulic rotary side-swing elevator
    Patent number: 11598162
    Abstract: A hydraulic rotary side-swing elevator includes an elevator body, a side swing mechanism and a rotating mechanism. Rotatable shafts are arranged on left and right sides of the elevator body. An inner hinge and an outer hinge are respectively provided on the two rotatable shafts. An inner hinge driving structure includes an inner hinge opening and closing cylinder and an opening and closing cylinder fixing seat. An outer hinge driving structure includes an outer hinge locking cylinder and a locking cylinder fixing seat. The opening and closing cylinder fixing seat and the locking cylinder fixing seat are arranged on a rear side wall of the elevator body. A cylinder barrel part of the inner hinge opening and closing cylinder is hinged on the opening and closing cylinder fixing seat, and a piston part of the inner hinge opening and closing cylinder is hinged to the inner hinge.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: March 7, 2023
    Assignee: HUANGSHAN HUANENG PETROCHEMICAL MACHINERY CO., LTD.
    Inventors: Kang Wang, Yang Li, Zulin Liu, Kuan Tian, Yingxiang Dong, Xiaodong Zhang
  • HYDRAULIC ROTARY SIDE-SWING ELEVATOR
    Publication number: 20220136342
    Abstract: A hydraulic rotary side-swing elevator includes an elevator body, a side swing mechanism and a rotating mechanism. Rotatable shafts are arranged on left and right sides of the elevator body. An inner hinge and an outer hinge are respectively provided on the two rotatable shafts. An inner hinge driving structure includes an inner hinge opening and closing cylinder and an opening and closing cylinder fixing seat. An outer hinge driving structure includes an outer hinge locking cylinder and a locking cylinder fixing seat. The opening and closing cylinder fixing seat and the locking cylinder fixing seat are arranged on a rear side wall of the elevator body. A cylinder barrel part of the inner hinge opening and closing cylinder is hinged on the opening and closing cylinder fixing seat, and a piston part of the inner hinge opening and closing cylinder is hinged to the inner hinge.
    Type: Application
    Filed: November 2, 2021
    Publication date: May 5, 2022
    Applicant: Huangshan Huaneng Petrochemical Machinery Co., Ltd.
    Inventors: KANG WANG, YANG LI, ZULIN LIU, KUAN TIAN, YINGXIANG DONG, XIAODONG ZHANG