US 4,583,242 AGranted

Apparatus for positioning a sample in a computerized axial tomographic scanner

AssigneeShell Oil Company

InventorsHarold J. Vinegar, Scott L. Wellington

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Abstract

An apparatus is provided for positioning a sample in the radiation field of a computerized axial tomographic scanner (CAT) for scanning by the CAT. The apparatus has a first support on a first side of the CAT and a second support on a second side of the CAT opposite the first side of the CAT. Both supports have respective guides and respective trolleys mounted upon their guides. The trolley on the first support is coupled to the second trolley by a suitable coupling so that movement of the first trolley by its motor causes similar movement of the second trolley, and the coupling with a sample mounted thereon passes through the radiation field of the CAT. A controller controls the motor to correctly position the sample as determined by a sample position sensor.

Claims11

Dependent claims

An apparatus for positioning a sample in a radiation field of a computerized axial tomographic scanner (CAT) for scanning by said CAT, said apparatus comprising:

a first support means positioned on a first side of said CAT having a first guide means;
a first trolley means having means for engaging said first guide means;
means for moving said first trolley means along said first guide means;
a second support means positioned on a second side of said CAT, said second side being opposite said first side and said second support means having a second guide means;
a second trolley means having means for engaging said second guide means;
means for coupling said first trolley means to said second trolley means such that movement of said first trolley means causes similar movement of said second trolley means, said coupling means passing through said radiation field of said CAT;
means attached to said coupling means for holding said sample;
means for sensing the position of said sample holding means;
and control means connected to said moving means and sensing means for controlling the positioning of said sample.

6 more elements

Dependencies are inferred from the claim text.