Abstract: A two-axis robot includes a vertical tubular post mounted for rotation about its vertical axis, with a vertically slidable shaft extending through the post. An arm on the upper end of the post projects radially outward and has a gripper assembly thereon with operable jaws for gripping a specimen tube. The robot is positioned between two reference locations, for retrieving a specimen tube from one reference location and transferring it to the other. The reference locations are located along a circle circumscribed by a central vertical axis of the gripper jaws as they swing about the rotational axis of the post.

Abstract: A transfer apparatus includes a shuttle depending from an overhead support with a pair of arms for receiving and shifting a specimen carrier from one conveyor to a second conveyor of a dual-conveyor track. The shuttle is operable to retain a specimen carrier along either the first or second conveyor and to release a specimen carrier along either the first or second conveyor. Sensors are located to detect the presence of a specimen carrier at each of the retention locations, and to confirm the release of a specimen carrier from the shuttle along each of the conveyors. A drive motor for moving the shuttle between the retention and release positions is electrically connected to a command module with a processor, for receiving instructions as to the position of the shuttle. The sensors are also connected to the processor to transmit detection data to the processor. A queue is positioned upstream of the shuttle and is electrically connected to the processor.

Abstract: A two-axis robot includes a vertical tubular post mounted for rotation about its vertical axis, with a vertically slidable shaft extending through the post. An arm on the upper end of the post projects radially outward and has a gripper assembly thereon with operable jaws for gripping a specimen tube. The robot is positioned between two reference locations, for retrieving a specimen tube from one reference location and transferring it to the other. The reference locations are located along a circle circumscribed by a central vertical axis of the gripper jaws as they swing about the rotational axis of the post.