Patents by Inventor Wen-Hwan Chang

Wen-Hwan Chang 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: 6494470
    Abstract: A front wheel assembly for a scooter. The scooter has a head tube provided at a front end thereof, a stem extending through the head tube, and a handlebar provided on a top of the stem. The front wheel assembly has a seat mounted at a lower end of the stem. A longitudinal bar is pivotally mounted in the seat. A first wheel is provided at a front end of the longitudinal bar. An axle is pivotally provided at a rear end of the longitudinal bar. A pair of second wheels, one of the pair of wheels mounted at each end of the axle. Whereby, when a user turns the handlebar, the scooter can follow a twisting path.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: December 17, 2002
    Assignee: Tai E. International
    Inventor: Wen-Hwan Chang
  • Publication number: 20020167146
    Abstract: A front wheels assembly for a scooter is disclosed. The scooter has a head tube provided at a front end thereof, a stem extending through the head tube, and a handlebar provided on a top of the stem. The front wheels assembly has a seat mounted at a lower end of the stem. A longitudinal bar is pivotally mounted in the seat. A first wheel is provided at a front end of the longitudinal bar. An axle is pivotally provided at a rear end of the longitudinal bar. A pair of second wheels is respectively provided at both ends of the axle. Whereby, when a user turns the handlebar, the scooter can follow a twisting path.
    Type: Application
    Filed: May 11, 2001
    Publication date: November 14, 2002
    Inventor: Wen-Hwan Chang