Abstract: A gantry system is provided, the gantry system having a gantry cross member supported by at least two essentially parallel support beams supporting the cross member, the axis of movement of the cross member being essentially perpendicular to the at least two parallel support beams, at least two of the support beams each having a horizontal surface and a vertical surface, and at one point of along cross member, the cross member is operatively associated with one of the support beams through a fixed bogy and at another point, the cross member is operatively associated with another of the support beams through a spring bogy. The fixed bogy includes a frame supporting load carrying wheels vertically mounted and effective to roll along the horizontal surface of one of the support beams, and horizontal wheels are effective to roll along the vertical surface of one of the support beams.

Abstract: A multi passage swivel assembly provides fluid or gas flow while continuous or intermittent rotation occurs between a fixed inlet port and a rotating outlet port. The assembly contains a clearance control ring that compensates for dimensional change to allow high pressure operation.