US Patent 7132082 Sample carrier having releasable locking mechanism

A sample carrier comprising a frame and one or more sample tube receiving structures pivotally connected to the frame. Each sample tube receiving structure includes a bottom member adapted to receive a plurality of sample tubes and a top member having a plurality of aligned apertures sized to receive sample tubes therethrough. The sample tube receiving structures can be releasably locked relative to a support wall of the frame, thereby substantially immobilizing sample tubes that are held by the sample carrier.