Patents by Inventor John Edward Stewardson

John Edward Stewardson 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: 6102415
    Abstract: The Inherently Stable Riding Platform is a platform supported by a suspension system including a pair of two wheeled caster action bogies, the rear bogie mounted to the platform by two ball-joints forming a single axis pivotal discipline and the front bogie mounted to the platform by five ball-joints; four joints arranged in pairs to form two separate elongated restraining linkages and a single supporting ball-joint; the five together forming a multi-axis pivotal discipline. The whole arrangement is inherently stable and steerable by positionings of the rider's body. Energy for propulsion is harnessed because a turning movement of the bogies results in the platform rising due to the pivotal discipline of the suspension geometry. Conversely, straightening of the bogies releases the energy.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: August 15, 2000
    Inventor: John Edward Stewardson