Patent ID: 7107725

Claim:
A swivel joint apparatus for supplying utilities to a rotating building rotatable about a central axis, comprising: a first, fixed member for securing to a fixed base of a rotating building to extend co-axially with the central axis of rotation of the building, the first member having a plurality of annular chambers each having an annular opening directed away from the first member; a second member rotatably mounted on the first member for securing to a portion of the rotating building, the second member extending over the chamber openings in the first member to form rotating wall portions closing the respective chambers; a plurality of seals between the first and second member for sealing the chambers; the first member having a first set of ports connected to the respective chambers for connection to fixed utility lines in the base of the building; and the rotatable member having a second set of ports connected to the respective chambers for connection of utility fluids to and from the rotating part of the building.