Apparatus for selectively examining radioactive samples

Claim 1

Apparatus for retaining a plurality of sample containers of radioactive material and transporting one at a time to a detector for examination, comprising: a. a frame, b. a plurality of carriers movably disposed in spaced relationship on the frame, c. a plurality of holders, each (i) having a plurality of apertures along a longitudinal axis for retaining sample containers, and (ii) secured to and axially movable relative to one carrier, d. a transfer assembly for maintaining the carriers and holders spaced and parallel with respect to other carriers and holders, and for transporting the carriers and holders along a continuous generally elongated path having closely adjacent sides, with the carriers and holders on said sides of the path being correspondingly adjacent, the path also defining a discharge area to which each holder is transported, e. a shielded detector including an aperture for receiving one sample container at a time, and f. the transfer assembly further comprising means cooperating with each holder at the discharge area, for selectively moving each holder axially with respect to its carrier and a selected container to a discharge point for transport from the holder to said detector for examination thereof, and returning the container to its holder.