Patents by Inventor Joseph Kuan-tan Chen

Joseph Kuan-tan Chen 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: 6237734
    Abstract: The present invention relates to a multi-purpose traveling luggage which comprises a case body with an associated cover at front and a backboard in the back. When the luggage is positioned in an erect position, the outer comers at the bottom of the associated cover has two caster wheels and the lower portion of the backboard is connected to a pair of leg supports. The lower portions of the leg supports comprise a pair of leg wheels, and the upper portions of the leg supports are connected to the outer edges at the midportion of the backboard. There is a pair of drive rod members having their lower portions connected to the lower outer edges of the backboard and their upper portions connected to each other by a connecting rod member. The drive rod members are connected to the leg supports through the engagement of elongated scissor grooves on the leg supports and scissor pins on the drive rod members.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: May 29, 2001
    Inventor: Joseph Kuan-tan Chen