Patents by Inventor Yizhao ZANG

Yizhao ZANG 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).

  • Patent number: 11260614
    Abstract: A venting device and a tire mold are disclosed for use in a tire vulcanization process. The venting device includes a core shaft and a sleeve sleeved over the core shaft, a venting passage is formed between the sleeve and the core shaft, the core shaft includes a shaft body, one end of the shaft body is connected to a shaft head, the other end of the shaft body is connected to a shaft end piece provided with a groove extending through the shaft end piece, and an end of the groove facing away from the shaft head is closed. The shaft end piece is used for axially stopping the shaft body, and the shaft end piece is further used for assembling the sleeve and the core shaft by contracting and springing back.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: March 1, 2022
    Assignee: HIMILE MECHANICAL SCIENCE AND TECHNOLOGY (SHANDONG) CO., LTD.
    Inventors: Wei Zhang, Wanli Wang, Ping Du, Riwen Sun, Jian Li, Lixin Feng, Yizhao Zang
  • Publication number: 20210394474
    Abstract: The present invention provides a venting device and a tire mold, which relates to a technical field of tire vulcanization process. A venting device provided by the present invention includes a core shaft and a sleeve sleeved over the core shaft, a venting passage is formed between the sleeve and the core shaft, the core shaft includes a shaft body, one end of the shaft body is connected to a shaft head, the other end of the shaft body is connected to a shaft end piece provided with a groove extending through the shaft end piece, and an end of the groove facing away from the shaft head is closed; the shaft end piece is used for axially stopping the shaft body, and the shaft end piece is further used for assembling the sleeve and the core shaft by contracting and springing back.
    Type: Application
    Filed: October 11, 2019
    Publication date: December 23, 2021
    Inventors: Wei ZHANG, Wanli WANG, Ping DU, Riwen SUN, Jian LI, Lixin FENG, Yizhao ZANG