(under subclass 78) Device which effects movement of product directly by means of one or more jets or streams of liquid or gaseous material.
(1) Note. The pressure of the fluid current may be superatmospheric or subatmospheric.
(2) Note. Fluid pressure means (blast or vacuum) which
function merely to push or pull product into contact with a mechanical product-moving or product-braking means do not constitute subject matter for this subclass. Original patents claiming such fluid blast devices will be placed in the subclass based on the nature either of the mechanical product-moving means or the mechanical product-braking means.
(3) Note. The Notes under the definition of subclass 402, below, include a comprehensive listing of subclasses in this class and in other classes which deal with material handling by fluid current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152, for a product-moving means with suction means for pressing product to the moving means. SEE OR SEARCH CLASS
198, Conveyors: Power-Driven,
428, 438, and 493 for a power-driven conveyor combined with means for impinging fluid on the conveyed load.
226, Advancing Material of Indeterminate Length,
97.1+, for means to advance material by fluid current.
