Patents by Inventor Stephen Zhao

Stephen Zhao 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).

  • Publication number: 20090071517
    Abstract: The present invention involves umbrella devices and methods for dual-function umbrellas that may combine a vertical-supported and inclined-suspended umbrella in one structure. A dual-function umbrella that may have vertical supporting and incline suspending structure may have a frame column, umbrella holder and a crank mechanism to position the umbrella holder; the umbrella holder may include a fixed umbrella bracket, moveable umbrella bracket, multiple umbrella ribs with one end pin-jointed to the fixed umbrella bracket, and multiple supporting ribs with opposite ends pin-jointed to the central part of a corresponding umbrella rib and the moveable umbrella bracket. The dual-function umbrella may also have a tilting bar and a cross bar wherein the frame column may be equipped with a moveable locking gear for locking the bottom end of the cross bar. The crank mechanism may be positioned at the cross bar bottom end.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventor: Stephen Zhao