Patents by Inventor Li-Chuan Hsiao

Li-Chuan Hsiao 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: 4970881
    Abstract: The present disclosure is related to a code variable combination lock which is equipped with a code setting and locking assembly made up of a number of dial wheels having consecutive digits disposed thereon and a number of corresponding wheel sleeves which all are mounted on a lock core with a biasing spring and a stop member disposed at the end thereof. A push bracket having a latch hook disposed at the front end thereof is slidably engaged with the rightmost wheel sleeve. On the inner and outer surfaces of each wheel sleeve are disposed protrusions, and the inner wall of each dial wheel is provided with a plurality of spaced grooves.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: November 20, 1990
    Inventor: Li-Chuan Hsiao