Abstract: A mist generating, self-contained room air humidifier ensures substantially complete evaporation of the mist introduced to an air flow drawn from a room environment prior to discharge back into the room by preferably providing a vertical column extending upwardly from the mist generator to the humidifier outlet and having sufficient height to allow complete evaporation.

Abstract: A humidifier for adding liquid from a mist source to a gas flow improves the evaporation of the liquid by reducing the quantity of larger water droplets from the mist introduced to the gas flow by slowing a diverted portion of the gas flow, routing the gas flow through a partitioned chamber and deflecting the gas flow from direct impact on the mist while catching splattered liquid droplets within the humidifier.

Abstract: An automatic vehicle cleaning system in which a spray bar is mounted on a trolley which moves on an overhead track around a vehicle stopped at a cleaning location. Rotating spray nozzles are mounted on the spray bar to spray the top and sides of the vehicle as the trolley advances around the vehicle. An indexing mechanism is provided for adjusting the spacing between the sides of the vehicle and the nozzles which spray the sides for accommodating different size vehicles with optimal cleaning efficiency. The spray bar may be indexed to any of four positions using two different length pneumatic or hydraulic cylinders connected end to end.