Patents by Inventor Tung-Ping Hung

Tung-Ping Hung 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: 4802681
    Abstract: An improved wheelbarrow is disclosed which has a body with a foldable rear section and stable front section, a rack, and front wheels fixed on both ends of a wheel axle. The wheel axle is supported at both its sides with a flexing case which provides elastic movement to the wheel axle by means of a spring and a pushing plate. A braking device for the front wheels is also disclosed, as well as auxiliary rear wheels. The wheelbarrow has three different configuration and is capable of safe movement while reducing the amount of force necessary for its use.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: February 7, 1989
    Inventor: Tung-Ping Hung