Radiation shield swivel mount

Claim 1

A swivel mount for a radiation shield comprising an articulated support arm having at least two joined arm sections with one of said sections being a configured end arm section which is rotatably connected to the other arm section and hangs downward therefrom with an angled off-set at the lower end thereof which terminates in a substantially spherical bearing member which is disposed to hang vertically under the connection of said arm sections, said bearing member including a horizontal pin member extending through the center of said bearing member perpendicular to the longitudinal axis of a cantilevered end of said end arm section where said end arm section engages said bearing member, a radiation shield having a circular opening formed proximate the balance center thereof, a pair of clamping members disposed on opposite sides of the opening formed in said shield and trapping said bearing member of said end arm section therebetween, one of said clamping members having an aperture formed therein through which the support arm projects, said clamping members being interlocked by tie bolts, and bearing pads mounted between said clamping members and contacting said bearing member on opposite sides thereof with a variable pressure friction fit whereby said bearing can be partially rotated with respect to said clamping members and said shield can be positioned at variable orientations within the limits of rotation and angulation of said shield on said bearing member, said bearing pads being formed to provide a cavity to accommodate said pin which permits the shield to be rotated 360 degrees around said bearing member and said pin.