| 摘要 |
Relates to steering apparatus for trailers having pivoted wheels and towed by motor vehicles, the steering provision being a reversible electric motor carried by each such trailer. The power for the electric motor is derived from a battery or other source of electric power carried by the towing vehicle and the control of which is located in the towing vehicle and performed by the operator of the towing vehicle. An electric circuit is connected at one end to the battery in the towing vehicle and at the other end to the electric motor in the trailer. A three-position switch is incorporated in the circuit for controlling the operation of the motor and is preferably mounted on the steering column of the towing vehicle convenient to the operator. The electric motor is carried on the axle for a pair of pivoted wheels and acts through gearing to move a bar paralleling the axle in one or the opposite direction of its longitudinal dimension, the opposite ends of the bar being coupled to the pair of pivoted wheels to effect their turning movement in one or the opposite direction according to the direction of rotation of the motor.
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