Patents by Inventor Shen-Yang Mao

Shen-Yang Mao 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: 20070284211
    Abstract: An electric hub having a clutch means is used in wheels of an electric wheelchair and includes a hub means, a clutch means and an elastic body. The hub means includes an outer hub and an inner hub provided in its interior. The end face on one side of the outer hub is provided with a first gear. A projecting shaft extends from one side of the inner hub to correspond to the first gear. One side of the hub means is connected to the clutch means. The clutch means includes a rotary assembly and a movable disk connected to the projecting shaft. The movable disk is movable relative to the axial direction of the projecting shaft. A mating second gear is provided to correspond to the first gear. The elastic body is provided between the inner hub and the movable disk to control the clutching operation between the outer hub and the movable disk.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: Cheng-Shing Tin, Shen-Yang Mao, Cheng-Wei Tsai