Patents by Inventor Jefferson Y. Yang

Jefferson Y. Yang 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).

  • Dual-latching solenoid-actuated valve assembly
    Patent number: 5529281
    Abstract: A tube-type shutoff valve is electrically positioned to its open or closed position by a concentric electromagnetic solenoid. The valve is dual latching in that the armature of the solenoid maintains the sliding tube of the valve in an open or closed position by means of permanent magnets which are effective when current is not supplied to the solenoid. The valve may also be actuated manually.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: June 25, 1996
    Assignee: The United States of America as represented by the Administrator of National Aeronautics and Space
    Inventors: Myron J. Brudnicki, Jefferson Y. Yang