HAL (the Hybrid Assistive Limb) is a powered exoskeleton suit currently in development by Tsukuba University in Japan. There are currently two prototypes: HAL-3 (restoring of the leg function) and HAL-5 (a full-body exoskeleton for the arms, legs, and torso). HAL-5 is currently capable of allowing the operator to lift and carry about five times…

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