Pneumatic spring for legged walker

Over the years, scientists and artists alike have imagined walking mechanisms that mimic the natural gait of humans and animals. Only recently have engineers begun to unravel the mystery of animal locomotion. Several walking robots have been built in the past few years [1]. An ongoing research problem with these robots is their inefficiency. Whereas animal locomotion is quite efficient, our efforts to mimic it have not been, with a few notable exceptions [2]. In this paper, we present a design for efficient legged locomotion, and we show the initial concept demonstration.