Patents by Inventor Li Haiyun

Li Haiyun 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).

  • ELEVATOR GOVERNOR DEVICE
    Publication number: 20120006630
    Abstract: An exemplary elevator governor device includes a sheave that is configured to move responsive to movement of a rope that moves with an elevator car. A stop member selectively moves into an engaged position in which the stop member is positioned to engage a portion of the rope to prevent movement of the rope. The stop member has a generally cylindrical outer surface for engaging the rope.
    Type: Application
    Filed: June 12, 2009
    Publication date: January 12, 2012
    Inventors: Min Allan Wang, Li Haiyun