(under the class definition) Apparatus having two or more discrete separators arranged one downstream of the other, at least two of the separators being of differing basic types.
(1) Note. Basic types of separators here included are, for example; expansion chambers, deflectors (fixed baffles, whirl chambers and moving members), filters (screens, porous mass or pad, cohesive sheet material), sorbers and the like.
(2) Note. The patents in these subclasses usually comprise separate and distinct diverse separating members. However, in subclass 335 indented hereunder will be found integral or connected deflectors and filters, usually a conical screen with an upstream deflector surface for the gas to first impinge upon and be deflected by the surface and then be screened or filtered through the foraminous member.
(3) Note. Concentrate collection receptacles or retainers provided with gas escape means and which serve to permit concentrate to be in part air borne to the said receptacle and therefore act as a secondary separator are not considered as separators for classification with serially arranged diverse separators under this definition, but as proper subject matter for subclass 428.
SEE OR SEARCH THIS CLASS, SUBCLASS:
342+, for serially arranged multiple similar separators.
