Trailer

A trailer including a support frame, a steering axle, and first and second steering wheels, the trailer connectable to a tow vehicle having a forward gear and a reverse gear, comprising:

• a tie rod interconnecting each of the steering wheels;
• a linear actuator having an arm connected to the steering axle;
• means for moving the arm of the linear actuator between a first forward position providing a positive caster to the steering axle, and a second rearward position providing a negative caster to the steering axle in response to the shifting of the tow vehicle between the forward gear and the reverse gear;
• wherein the means for moving includes a power source, a reversible motor connected to the linear actuator, the motor rotatable in a first forward direction so as to move the arm of the linear actuator toward the first forward position and rotatable in a second rearward direction so as to move the arm of the linear actuator toward the second rearward position and a switch operatively connecting the power source and the reversible motor, the switch movable between a first forward position wherein the motor rotates in the first forward direction and a second rearward position wherein the motor rotates in a second rearward direction in response to the tow vehicle shifting between forward gear and reverse gear, a first proximity switch operatively connected to the motor, the first proximity switch preventing forward rotation of the motor when the tow vehicle is in forward gear and the arm of the linear actuator is in the forward position and a second proximity switch operatively connected to the motor, the second proximity switch preventing reverse rotation of the motor when the arm of the linear actuator is in the second rearward position and the tow vehicle is in reverse gear.