(under the class definition) Subject matter wherein a gear transmission* is provided to drive parallel vehicle wheels at different relative speeds to effect turning of the vehicle and such means either regulates or is regulated by an engine*.
SEE OR SEARCH CLASS
180, Motor Vehicles,
6.2+, for steering by driving combined with significant vehicle structure.
475, Planetary Gear Transmission Systems or Components,
18+, for gearing of that type used for steering by driving.
