Patents by Inventor Lokshun Leung

Lokshun Leung 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).

  • Anti-fall device for a window sash
    Patent number: 8424246
    Abstract: An anti-fall device for a window sash comprises a window-sash fixing block, a window-frame fixing block, an elastic metal wire and a pipe. The elastic metal wire connects the window-sash fixing block and the window-frame fixing block. The window-sash fixing block is defined with a through hole into which the pipe is inserted. One end of the elastic metal wire is connected to the window-frame fixing block, and the other end of the elastic metal wire penetrates the through hole in the window-sash fixing block and enters the pipe. The end of the elastic metal wire, which penetrates the through hole, is fixed with a limiting block. The diameter of the limiting block is bigger than that of the through hole. The window-sash fixing block is fixed on the window sash, and the window-frame fixing block is fixed on the window frame.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: April 23, 2013
    Inventors: Lin Feng, Lokshun Leung
  • Anti-Fall Device for a Window Sash
    Publication number: 20100275516
    Abstract: An anti-fall device for a window sash comprises a window-sash fixing block, a window-frame fixing block, an elastic metal wire and a pipe. The elastic metal wire connects the window-sash fixing block and the window-frame fixing block. The window-sash fixing block is defined with a through hole into which the pipe is inserted. One end of the elastic metal wire is connected to the window-frame fixing block, and the other end of the elastic metal wire penetrates the through hole in the window-sash fixing block and enters the pipe. The end of the elastic metal wire, which penetrates the through hole, is fixed with a limiting block. The diameter of the limiting block is bigger than that of the through hole. The window-sash fixing block is fixed on the window sash, and the window-frame fixing block is fixed on the window frame.
    Type: Application
    Filed: November 5, 2007
    Publication date: November 4, 2010
    Inventor: Lokshun Leung