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 conveyor track drive includes a housing with a first continuous loop conveyor having a portion extending through the housing within a generally horizontal drive plane. The conveyor includes a first segment extending through the housing in the drive plane, then wraps around a portion of a drive sprocket, extends back upstream and around a portion of an idler sprocket and then includes a second segment transversely adjacent the first segment within the drive plane. A guide plate on the housing is positioned over the drive plane with a slot located to guide a specimen carrier from the first segment to the second segment at the point where the two segments are adjacent one another. A motor in the housing drives the drive sprocket to move the conveyor.

Abstract: The passive transfer guide of the present invention is positioned in a section of tangency between a first continuous loop conveyor and a second continuous loop conveyor, with a first guide lane for directing a specimen carrier from the first conveyor to the second conveyor, and a second guide lane for directing a specimen carrier from the second conveyor to the first conveyor. The guide includes a horizontally oriented “H”-shaped central member having a pair of upper legs, a pair of lower legs, and a cross-member connecting the upper and lower legs. The upper legs and an upper portion of the cross-member form one specimen carrier-directing lane, and the lower legs and a lower portion of the cross-member form the second carrier-directing lane.