Patents by Inventor David P. Sagi

David P. Sagi 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).

  • Pedal-powered four-wheel vehicle
    Patent number: 5511809
    Abstract: The present invention is a pedal-powered two-rider four-wheel vehicle which has a general configuration of two bicycles attached in a side-by-side relationship. The four-wheel vehicle includes four mechanisms which are utilized to construct the present invention: (a) a "king-pin" front-wheel steering system; (b) a differential axle; (c) an intermediate driving shaft; and (d) a unified brake system.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: April 30, 1996
    Inventor: David P. Sagi