(under the class definition) Pipes or pipe fittings having baffles or other means for changing the direction or rate of flow of fluid in the pipe or for governing the degree of turbulence of the flowing fluid.
SEE OR SEARCH CLASS
48, Gas: Heating and Illuminating,
180+, for conduits having mixing means for fuel gases.
110, Furnaces,
324+, for baffles or heat retainers structurally defined for engaging pipe structure.
137, Fluid Handling, appropriate subclasses for processes and apparatus having means for controlling the flow of fluid therein and multiple valves, per se, and particularly 98+, for baffles employed for securing self-proportioning flow, subclass 505+ for pressure regulators where the regulation is varied by the pressure in the pipe, subclass 574 for baffles employed to form plural compartments for serial flow, subclasses 610+ for deflectors forming a flow control device at the junction of a plurality of flow passages.
181, Acoustics,
212+, for similar structures in mufflers and sound filters.
251, Valves and Valve Actuation, appropriate subclasses for valves where the flow may be shut off, particularly
118+, (and the search notes thereto) for other fluid handling devices with baffles or other material guide structure.
406, Conveyors: Fluid Current,
92, for conduit having means to create whirling motion in a conveying fluid current; subclasses 155+ for proportional flow distributors; and subclasses 191+ for a conduit having a flow regulator or baffle therein, and some structural feature peculiar to the conveying of solids in a fluid current.
