Walking truck
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The walking truck was an experimental quadruped robot made by General Electric in 1968. It was designed by Ralph Mosher to help infantry carry equipment over rough terrain.
The stepping of the robot was controlled by a human pushing the pedals with his feet. The complex movements within a leg and between legs when moving was controlled by a computer (Wickelgren, 1996). The robot weighted 3000 pounds and could walk up to 4 miles a hour.