Patents by Inventor Tonj Liang

Tonj Liang 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).

  • Publication number: 20070222233
    Abstract: The present invention relates to a night latch in particular a night latch that includes a housing, tumbler, button, and a two resilient members. The housing of the present invention maintains the tumbler, button, and two resilient members. The housing also may have at least one protrusion located on its sidewall. The tumbler of the present invention has a pivoting member along with a means for housing a resilient member. In addition the tumbler of the present invention may have recess located on its front face. The tumbler also has at least one groove that co-acts with the protrusion on the sidewall. A first resilient member is used force the tumbler into an exposed position, and a second resilient member is used to keep the tumbler in a retracted position, via the co-action of the recess in the tumbler and a protrusion on the bottom portion of the button.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 27, 2007
    Inventors: Luke Liang, Tonj Liang, David Chen