1 janv. 1987 - The Mitsubishi Movemaster RM-501 Gripper is introduced. This robot gripper and arm was a small, commercially available industrial robot. It was used for tasks such as assembling products or handling chemicals. The arm, including the gripper, had six degrees of freedom and was driven by electric motors connected to the joints by belts. The arm could move fifteen inches per second, could lift 2.7 pounds, and was accurate within .02 of an inch.