(under the class definition) Devices having cleaning means within the class definition contacting a surface under a body of liquid and also having means to cause a current of ambient liquid over the surface to dislodge or remove solids or sediment on the surface.
SEE OR SEARCH CLASS
137, Fluid Handling,
565.01+, for tank and pump combinations there provided for, and subclass 577.5 for tanks having traversing fluid supply conduits.
210, Liquid Purification or Separation,
241+, for separators having moving support means, and subclasses 523+ for gravitational separators having mechanical constituent movers.
