(under subclass 591) Apparatus in which a gas is introduced at, about or downstream of an exit opening of the receptacle, the gas having intimate contact at some time with the molten metal.
(1) Note. The gas may cool, lubricate or otherwise enhance the dispensing of the molten metal. However, such a gas, if it should react with the molten metal or otherwise provide a claimed treatment, e.g., agitation, to the molten metal in the receptacle it would then be considered proper subject matter for classification in Class 266.
