Patents by Inventor Sylvestor Yen

Sylvestor Yen 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).

  • Collapsible axle for velocipede
    Publication number: 20100133021
    Abstract: A supporting member that carries at least 1 wheel and either rotates with the wheel to transmit mechanical power to and from it, and allows the wheel to rotate freely on it. The axle is an invention by itself and there is no prior art which has the axle attached to the housing. The axle and wheels can be removed and is therefore easier to ship. The axle can be used in a tricycle, trailer, caboose or any human or mechanical powered vehicle.
    Type: Application
    Filed: January 15, 2009
    Publication date: June 3, 2010
    Inventor: Sylvestor Yen