Patents by Inventor Tzyh-Suenn Chia

Tzyh-Suenn Chia 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).

  • Numeral lock with changeable unlocking numbers
    Patent number: 5186032
    Abstract: The numeral lock with changeable combinations includes a housing, handle members disposed on opposite sides of the housing, a slider member mounted in the housing, a plurality of adjustable dial members provided on the housing for changing the combination of the numeral lock, and a plurality of notches or numbers provided on the housing circumferentially spaced about the dial members. The adjustable dial members can be set to an unlocking position to open the numeral lock. A setting knob mounted on the housing can be pulled outwardly to change the positions of the adjustable dial members for changing the combination of the numeral lock.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: February 16, 1993
    Inventor: Tzyh-Suenn Chia