(under subclass 400) Subject matter in which there is provided motive means movable by the application of mechanical power (obtained, for example, from a power take-off mechanism) thereto to provide substantially all of the force required for guiding the vehicle, the initiating and/or remaining force being provided a vehicle operator in guiding the vehicle.
(1) Note. When the invention relates to steering gear and transmission mechanism for actuating it, the fact that a shaft rotating constantly in one direction supplies the power is regarded as evidence that the steering gear is driven by power.
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17, for steering by differential rotation of the wheels on opposite sides of the vehicle.
18, for steering by driving controlled by steering of this type.
