Abstract: Apparatus for cleaning long tubular instruments including an ultrasonically agitated sump containing cleaning solution into which the instrument to be cleaned is placed. A pump and filter arrangement is connected to an end of the instrument to impose a pulsating partial vacuum thereon and draw cleaning fluid through the full length of the instrument. The filtered cleaning solution is then returned to the sump.

Abstract: A wireless slip ring assembly includes inner and outer subassemblies mounted together for undergoing rotation relative to one another. The inner subassembly includes a sleeve composed of axially spaced annular slip rings and a printed circuitboard mounted within the sleeve having spaced longitudinal sides connected at longitudinal edges and spaced conductive paths defined on the longitudinal sides and extending to the edges. The conductive paths are spaced from interior sides of the slip rings except at the longitudinal edges of the circuitboard, where each conductive path is electrically and rigidly connected to one slip ring.

Abstract: A device for visually indicating the moisture content of a potted plant includes a housing defining opposing openings in which an elongated flexible visual moisture indicating member is disposed. A reciprocally moveable support member is operatively associated with the housing and is fixed to the indicating member so that movement of the support member between high and low positions responsively effects flexible downward and upward displacement, respectively, of the exposed portion of the indicating member extending exteriorly of the housing. In such a manner, the moisture content of a potted plant can be quickly ascertained by visual inspection of the relative positioning of the exposed indicator member portion.