(under subclass 548) Apparatus in which the spray openings extend through a wall which is of concavo-convex form; i.e., the wall has a curvature about one or more axes (e.g., cylindrical or spherical).
(1) Note. The perforations in the terminal members must be arranged around the curved wall; e.g., at least two of the said openings must be spaced from each other circumferentially of the member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
559, for other outlet arrangements in a concavo-convex face or wall and see (1) Note in the definitions of subclass 558.
