B05B 12/1454

Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials {or several in selected proportions} to a {spray apparatus, e.g. to a} single spray outlet {separate units comprising both a material container and a spray device permanently connected thereto being removably attached to a part of the spray apparatus, e.g. to a robot arm}