Abstract: A coupling or adapter assembly that serves as a transition device for interconnecting a fluid source, such as a fire hydrant, to a conduit, piping system or hose includes an adapter portion of generally cylindrical configuration having a fluid conveyance bore of non-uniform diameter extending therethrough and annular threads at opposed ends of the adapter portion. The annular threads at one end of the adapter portion are of a stepped threaded configuration in order to engage the inner annular double threaded configuration of a ring member that is externally threaded onto the adapter portion thereby binding the adapter portion to the ring member so that they function as an integral, one piece transition device interconnecting, for example, a fire hydrant to a Storz-type coupling of a hose or conduit.

Abstract: An air tunnel track interface attaches to a can testing apparatus for receiving cans from the output of the can testing apparatus and transferring them to a conveyor system. The air tunnel track interface comprises two parallel substantially U-shaped tracks each having an air chamber, a plurality of air louver jets and diverging ends, and a pair of parallel discharge plates each having diverging cutouts for mating with the diverging ends of the U-shaped tracks.

Abstract: A conveyor system for feeding containers along a path includes a pair of plenums located on opposite sides of the path. Each plenum has an inner wall which has apertures along the center thereof, with flanges extending from each wall to define chambers or guide channels that receive opposite ends of the container. The system further consists of rigid pneumatic conduits for delivering pressurized fluid from a centrifugal blower to the plenums. The pressurized fluid is introduced into the plenums and flows through the apertures to substantially suspend the containers in the chamber. The pneumatic conduits and the centrifugal blower are integrally associated with the dual plenums, thereby structurally enhancing the entire conveyor system.