Patents by Inventor Zhangjun Wang

Zhangjun Wang 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).

  • Door handle lock and locking method
    Patent number: 11634933
    Abstract: A door handle lock and a locking method are provided. The door handle lock comprises a first lock body, a second lock body, and a locking part, and the locking part is engaged with a movable part to lock the first lock body, thus being difficult to unlock. The door handle lock is mounted within a rotation range of the door handle, and the rotation of the door handle is limited by the first lock body. Such a setting effectively prevents a child from unlocking without permission and then opening the door to escape, thus improving the security.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: April 25, 2023
    Inventor: Zhangjun Wang
  • DOOR HANDLE LOCK AND LOCKING METHOD
    Publication number: 20200392762
    Abstract: A door handle lock and a locking method are provided. The door handle lock comprises a first lock body, a second lock body, and a locking part, and the locking part is engaged with a movable part to lock the first lock body, thus being difficult to unlock. The door handle lock is mounted within a rotation range of the door handle, and the rotation of the door handle is limited by the first lock body. Such a setting effectively prevents a child from unlocking without permission and then opening the door to escape, thus improving the security.
    Type: Application
    Filed: September 30, 2019
    Publication date: December 17, 2020
    Inventor: Zhangjun Wang
  • Fixing device for windows and doors
    Patent number: D944635
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: March 1, 2022
    Inventors: Zhangjun Wang, Binhui Li