Patents by Inventor Fengwen XIN

Fengwen XIN 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).

  • Impact-resistant balanced hydro-cylinder with pressure relief and buffering protection
    Patent number: 11913479
    Abstract: An impact-resistant balanced hydro-cylinder with pressure relief and buffering protection comprises a cylinder body (11), a piston (13), a piston rod (14), and a first valve core (21) and a second valve core (51) slidable relative to the cylinder body (11). A closed first gas cavity (22) and a closed second gas cavity (52) are respectively formed between the two valve cores and inner walls of two opposite ends of the cylinder body (11). A closed first oil cavity (32) and a closed second oil cavity (42) are respectively formed between the two valve cores and two end faces of the piston (13). A through hole (33) for the first oil cavity and a through hole (43) for the second oil cavity are respectively provided in the positions on the cylinder body (11) corresponding to the first oil cavity (32) and the second oil cavity (42).
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: February 27, 2024
    Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Lirong Wan, Xuehui Yu, Dejian Ma, Jiantao Wang, Fengwen Xin, Zhaoji Li, Guoqing Qi, Baolong Chen
  • IMPACT-RESISTANT BALANCED HYDRO-CYLINDER WITH PRESSURE RELIEF AND BUFFERING PROTECTION
    Publication number: 20220412380
    Abstract: An impact-resistant balanced hydro-cylinder with pressure relief and buffering protection comprises a cylinder body (11), a piston (13), a piston rod (14), and a first valve core (21) and a second valve core (51) slidable relative to the cylinder body (11). A closed first gas cavity (22) and a closed second gas cavity (52) are respectively formed between the two valve cores and inner walls of two opposite ends of the cylinder body (11). A closed first oil cavity (32) and a closed second oil cavity (42) are respectively formed between the two valve cores and two end faces of the piston (13). A through hole (33) for the first oil cavity and a through hole (43) for the second oil cavity are respectively provided in the positions on the cylinder body (11) corresponding to the first oil cavity (32) and the second oil cavity (42).
    Type: Application
    Filed: April 30, 2021
    Publication date: December 29, 2022
    Inventors: Lirong WAN, Xuehui YU, Dejian MA, Jiantao WANG, Fengwen XIN, Zhaoji LI, Guoqing QI, Baolong CHEN