Patents by Inventor Tor P. Roberts

Tor P. Roberts 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: 5727644
    Abstract: An all-wheel steered vehicle in which all wheels are always parallel and have an equal role in steering the vehicle. It consists of a plurality of wheel assemblies capable of wheel rotation about the wheel's axis. The shaft of each wheel assembly (14) passes through bearings (16) such that the shaft is fastened to the chassis (15) but rotatable in its vertical axis. These wheel assemblies are attached to a common steering linkage (18) by lever arms(17). The steering linkage maintains the wheels in parallel, but allow the wheel assemblies to rotate simultaneously about their vertical axis. The vehicle body or seat (23) is rotatable about the center of the chassis. The vehicle body or seat is in linkage with the wheel assemblies such that a rotation of vehicle body or seat relative to the chassis causes a simultaneous and equal rotation of all the wheel assemblies about their vertical axis. That is, both the vehicle body or seat and all of the wheels are maintained parallel to one another.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: March 17, 1998
    Inventors: Brock F. Roberts, Tor P. Roberts