Abstract: A machine for coupling a plunger rod to a syringe assembly may include a carriage including a cradle having a seat portion sized to receive a syringe assembly and an aperture portion disposed above the seat portion and sized to receive a plunger rod. An actuating device may be operatively coupled to the carriage and adapted to move the cradle from a first position to a second position to couple the plunger rod to the syringe assembly. The carriage may be selected from separate and interchangeable first and second carriages, wherein the first carriage includes a cradle adapted to receive a syringe assembly of a first size and the second carriage including a cradle sized to receive a syringe assembly of a second size that is different from the first size.

Abstract: An apparatus is provided for ensuring the proper orientation of an electronic device within a rack slot. A constraint is added to one of a pair of rail assemblies and a corresponding constraint is added to the rack, the pair of constraints cooperating to allow the pair of rail assemblies to be installed only in the proper sides of the rack. Mounting holes are provided on the device and inner rails of the rail assemblies that allow the inner rail assemblies to be installed only on the proper sides of the device. A key and key slot combination is then provided in an inner rail and a middle rail of one rail assembly with the combination preventing the inner rail from being fully inserted into the incorrect middle rail. Thus, the correct orientation of the device is ensured by the pair of rail assemblies, the spacing of mounting holes in the device, and the rack constraint.