Patent ID: 7861651

Claim:
A device for keeping a plurality of fountain solution spray nozzles in a printing press spray beam clean, the device comprising: (a) a plurality of separate covers, each of which is configured to surround a single spray nozzle; (b) the cover comprising a sleeve constructed to extend from the spray nozzle, and an end plate, wherein the sleeve and the end plate define an internal area within the cover and an external area outside the cover; (c) the sleeve comprising a drainage hole and a hole for supplying compressed air to the internal area; (d) the end plate comprising an opening within the end plate sized to maintain an overpressure region within the internal area and sized to allow a spray from the spray nozzle to leave the internal area without changing the spray; (e) wherein when compressed air is provided through the sleeve hole to create an overpressure of compressed air in the internal area relative to the external area of the cover, and when the spray is provided from the spray nozzle, both the spray and the compressed air leave the internal area of the cover through the opening in the end plate without the spray being changed by either the end plate or the compressed air.