It might sound like a futuristic invention, but Sanyo presented its washing-machine for humans way back in 1970. Officially named Ultrasonic Bath, this human washing machine was introduced as a concept at the 1970 World Expo in Osaka.
It was about 2 meters tall and the bather had to use a ladder to get in. After the desired water temperature was set, the 15-minutes-washing process would begin. First a 5-minutes pre-rinse cycle, spraying the baither with jets of hot water. After that the pod-shaped washing-machine filled up with water and a 3-minute massage-bath began.
The soothing massage was supposed to stimulate blood circulation while cleaning your body. A 2-minutes rinse process followerd, and finally a 5-minutes drying program, in which warm air blasted the user, while infrared and ultraviolet light killed any remaining bacteria.
