Abstract
Robots are expected to join in not only a great success in the industrial field but a public and a home places. However, in order to accept robots socially, when our life spaces are shared with them, it is essential that a safety is fully obtainable. In this paper, for the development of a safety and a relief biped robot, new design concept is created by applying the CDSS (Creative and inventive Design Support System). Moreover, demands of a safety and a relief for this robot are solved not as "Problem Solving by Trade-Off", but as "Contradiction Solving" by using CDSS. Therefore, we reported this creative and inventive thinking process and experiment to validate proposed idea by using simple prototype models.