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Swivel joint apparatus and method for utility supply to a rotatable building
| Details |
Inventors: Johnstone, III, Albert E.; Ratliff, Frank W.;
Assignee: Johnstone, III; Al (La Mesa, CA); Johnstone; Janet L. (La Mesa, CA)
Primary Examiner: Friedman; Carl D.
Assistant Examiner: Horton; Yvonne M.
Attorney, Agent or Firm: Gordon & Rees LLP
A swivel joint apparatus for supplying utilities to a rotating building rotatable about a central axis has an inner, fixed spindle for securing to a fixed base of the building to extend co-axially with a central axis of rotation of the building, and an outer casing rotatably mounted on the spindle for securing to the rotatable part of the building. The spindle has a series of spaced annular flanges defining a series of annular chambers and at least one ring seal mounted on the peripheral edge of each flange for rotatable sealing engagement with the outer casing so that the casing forms an outer wall of each of the annular chambers. A lower end wall of the spindle has a plurality of ports for connection to fixed utility lines in the base for fluid supply to and from the building, each port connected through the spindle to a respective annular chamber. The outer casing has a series of axially spaced ports for connection to respective utility lines in the rotatable part of the building, the ports including at least one port communicating with each of the annular chambers. |
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DETAILED DESCRIPTION It is an object of the present invention to provide a new and improved swivel joint apparatus and method for supplying utilities to a rotatable building.
According to one aspect of the present invention, a swivel joint apparatus is provided for supplying utilities to a rotating building rotatable about a central axis, which comprises an inner, fixed spindle for securing to a fixed base of the rotatable building to extend co-axially with a central axis of rotation of the building, the spindle having a series of spaced, outwardly projecting annular flanges defining a series of annular chambers between each adjacent pair of flanges, each flange having an outer peripheral edge and at least one ring seal mounted on the peripheral edge of each flange, the flanges having a predetermined outer diameter, and an outer casing rotatably mounted on the spindle for securing to part of the rotating building, the casing having an inner diameter substantially equal to the outer diameter of the flanges, the casing forming an outer wall of each of the annular chambers and being in rotatable sealing engagement with each of the ring seals to seal the chambers.
The spindle has a lower end wall with a plurality of ports for connection to fixed utility lines in the fixed base of the building for fluid supply to and from the building, and a bore extending from each port through the spindle to a respective annular chamber, with each chamber being connected to at least one port in the lower end wall.
The outer casing has a series of axially spaced ports including at least one port communicating with each of the annular chambers.
In an exemplary embodiment of the invention, each flange has an outwardly directed, annular sensor chamber spaced outwardly from the ring seal, the outer casing has a plurality of holes including at least one hole aligned with each of the sensor chambers, and a plurality of fluid sensors are mounted in the outer casing to project through the respective holes to sense any leakage of fluid past any of the seals
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