Patents by Inventor Chi-bin Chang

Chi-bin Chang 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: 5647096
    Abstract: A retractable handle control mechanism including a movable control block mounted in a longitudinal hole on the transverse handgrip of the retractable handle and moved by a control knob, two beveled edged links connected between the beveled guide blocks of two release control rods, which are moved in the inner tubes, and the two opposite bevel edges of the movable control block, and return control spring means, whereby when the control knob is depressed to lower the movable control block, the links are moved outwards in reversed directions to force the bevel guide blocks of the release control rods downwards, causing the release control rods to release the respective latches from the sleeves for permitting the inner tubes to be moved by the transverse handgrip between the retracted position and the extended position.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: July 15, 1997
    Inventor: Chi-bin Chang