Patents by Inventor Yip S. Shum

Yip S. Shum 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).

  • Keeper lock for a slide fastener
    Patent number: 4744230
    Abstract: A key-operated locking mechanism for the keeper of a zipper closure for a bank bag or the like, in which the keeper swings fully between the closure and release positions about an axis which is parallel to the axis of the zipper. In addition, the keeper and housing for the locking mechanism are provided with cooperating latch means which permits closure of the keeper, independently of any locking means.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: May 17, 1988
    Inventor: Yip S. Shum