Patents by Inventor Rong J. Jan

Rong J. Jan 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: 4583536
    Abstract: A breathing apparatus for underwater swimming or diving comprising a ventilating pipe formed with a cylindrical chamber, a buoyancy block disposed into the cylindrical chamber, a plug force-fitted on the top of the cylindrical chamber, a sleeve force-fitted with the center hole of the plug, a rubber tubing connected with the lower end of the sleeve, a movable member having a notch, a cap threadedly engaged with the top of the ventilating pipe, a float body on which is mounted the ventilating pipe, a hose threadedly engaged with the ventilating pipe, and a mouthpiece threadedly engaged with the hose.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: April 22, 1986
    Inventor: Rong J. Jan