Siemens Gammasonics, Inc.

The Machlett Laboratories, Incorporated

Frank C Scribano

Werner J Haas

An X-ray table having a surface disposed in a plane defined by longitudinal and transverse axes and a column extending perpendicularly to such axes. The column includes a plurality of vertical tracks. A carriage is provided supporting a spot film device projecting over the table surface. The carriage comprises a plurality of bearing assemblies, corresponding to the plurality of tracks, for slidably mounting the carriage on the plurality of tracks of the column. Each bearing assembly comprises: a bearing plate mounted about a pivot point to a surface of the carriage; and, a plurality of opposing bearings rotatably mounted to the bearing plate and arranged to engage the corresponding one of the plurality of tracks on the column. Application of lateral force to the bearing plate of a first one of the bearing assemblies pivots the carriage about the pivot point of that bearing plate. Likewise, application of lateral force to the bearing plate of a second one of the bearing assemblies pivotes the carriage about the pivot point of that bearing plate. Thus, with such arrangement, the carriage is gimballed with respect to the column about the bearing assembly pivot points. The pivot points of the first and second bearing assemblies are disposed along the transverse and longitudinal axes, respectively. Hence the carriage, and the spot film device secured thereto, may be pivoted about the carriage with two degrees of freedom to level the spot film device with respect to the table surface along the longitudinal and transverse axes.

Spot film device leveling mechanism

An improved emission computerized tomography (ECT) drive mechanism for an Anger-type scintillation camera is disclosed. A support arm, carrying the camera head at one end and a counterweight at the other, is mounted on a universal joint and driven about the joint by a crank. The crank comprises an acme-type screw and the arm attaches to the crank at a point distant from the joint by means of an acme nut. The tilt angle of the arm is varied by varying the position of the acme nut on the acme screw.

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Western Springs, IL, United States of America

Frank C Scribano