Patents by Inventor You-Ching Feng

You-Ching Feng 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).

  • Inertial air cleaner
    Patent number: 4569687
    Abstract: An inertial air cleaner characterized by comprising an intake pipe, a first air chamber, a second air chamber, a third air chamber, a first funnel-shaped air disturber, a second funnel-shaped air disturber, a first dust chamber, a second dust chamber and an exhaust pipe, and being capable of making the intake smoke or air with carbon rotate therein, and effectively removing the carbon particles by centrifugal force without need of any filtering materials.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: February 11, 1986
    Inventor: You-Ching Feng