Patents by Inventor Qingian Zeng

Qingian Zeng 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 car assembly having an adjustable platform
    Patent number: 7810611
    Abstract: An elevator car assembly (14) includes a frame (28) having a horizontal plank beam (36) beneath a platform assembly (34). A plurality of braces (44) support the platform assembly (34) relative to the frame. The braces (44) include at least one slot associated with a fastener (58, 60) to facilitate adjusting a position of the platform assembly (34) relative to the frame. Adjusting the position of the platform assembly (34) allows for leveling the car frame assembly in an economical manner that does not require the introduction of weights or other expensive balancing measures.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: October 12, 2010
    Assignee: Otis Elevator Company
    Inventors: Qingian Zeng, Patricia A. Derwinski, Bryan R. Siewert
  • Elevator car assembly having an adjustable platform
    Publication number: 20070089936
    Abstract: An elevator car assembly (14) includes a frame (28) having a horizontal plank beam (36) beneath a platform assembly (34). A plurality of braces (44) support the platform assembly (34) relative to the frame. The braces (44) include at least one slot associated with a fastener (58, 60) to facilitate adjusting a position of the platform assembly (34) relative to the frame. Adjusting the position of the platform assembly (34) allows for leveling the car frame assembly in an economical manner that does not require the introduction of weights or other expensive balancing measures.
    Type: Application
    Filed: November 17, 2003
    Publication date: April 26, 2007
    Inventors: Qingian Zeng, Patricia Derwinski, Bryan Siewert