US Patent 7536831 Rotatable building

There is disclosed an apparatus having a base, a shaft, a swivel joint assembly and plural stories. The base is fixed relative to the ground. The shaft extends vertically through the apparatus. The shaft is mounted to the base. The swivel joint assembly is mounted in the base coaxially with the shaft. The swivel joint rotatably connects fixed utility lines extending into the base with corresponding utility lines secured within the apparatus. Each of the plural stories defines an enclosed living area and is rotatably supported, at least in part, via the shaft. Each story has a drive mechanism adapted to rotate the story about the shaft at a speed controllable within the story.