Patents by Inventor Antonio Chi-Shing Wu

Antonio Chi-Shing Wu 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).

  • Electro-mechanical latch relay
    Patent number: 6218918
    Abstract: A mechanical latch relay started by a current pulse is disclosed which comprises an electromagnetic generating unit, a connecting mechanism and a mechanical locking mechanism, and which can maintain the existing operation state when the current pulse starting the relay disappears, and it changes its operation state when another current pulse is provided, and then it keeps the operation state even if the pulse disappears so that it can provide a stable operation state of current on/off unnecessary to be provided with a current for a long time, which enables to provide an effective control for current on/off.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: April 17, 2001
    Assignee: Glorywin International Group Limited
    Inventors: Ian G. Mawston, Antonio Chi-Shing Wu