Patents by Inventor Yangsun Lee

Yangsun Lee 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).

  • Patent number: 7229128
    Abstract: Collapsible furniture includes a frame structure configured to support weight, including a plurality of scissor members configured to fold and a plurality of upright members, each coupled to at least two of the scissor members. The collapsible furniture also includes a lock mechanism coupled to at least two of the scissor members and at least one of the upright members, configured to secure the collapsible furniture in a deployed position. In one aspect, the lock mechanism includes a housing, slidingly coupled to an upright member, configured to couple at least two of the scissor members to the upright member, a button member slidingly coupled to the housing, configured to extend through an opening on inner surface of the housing into the upright member when in a depressed position, and to extend outside outer surface of the housing when in an extended position, a spring plate, and a spring. Advantages of the invention include providing a safety feature in use of the collapsible furniture.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: June 12, 2007
    Assignee: North Pole Limited
    Inventor: Yangsun Lee
  • Publication number: 20060054753
    Abstract: Collapsible furniture includes a frame structure configured to support weight, including a plurality of scissor members configured to fold and a plurality of upright members, each coupled to at least two of the scissor members. The collapsible furniture also includes a lock mechanism coupled to at least two of the scissor members and at least one of the upright members, configured to secure the collapsible furniture in a deployed position. In one aspect, the lock mechanism includes a housing, slidingly coupled to an upright member, configured to couple at least two of the scissor members to the upright member, a button member slidingly coupled to the housing, configured to extend through an opening on inner surface of the housing into the upright member when in a depressed position, and to extend outside outer surface of the housing when in an extended position, a spring plate, and a spring. Advantages of the invention include providing a safety feature in use of the collapsible furniture.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 16, 2006
    Inventor: Yangsun Lee