(under the class definition) Devices comprising means for
directing fluid outwardly into the well from a tubing or casing, said means comprising more than a mere opening in a wall and (1) acting to give a whirling or tangential motion to the fluid, or (2) positioned in a side wall of the tubing or casing rather than being an end opening, or (3) said means being capable of being projected from the tubing or casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
99, for junk retrieving means having nozzles for directing fluid outwardly from the junk catcher.
112, for eduction pumps with nozzles for spraying the well walls.
157+, for screens with washing points or shoes.
169, for receptacles having lateral ports for the discharge of fluid. SEE OR SEARCH CLASS
175, Boring or Penetrating the Earth,
424, for earth boring jetting or suction nozzles.
239, Fluid Sprinkling, Spraying, and Diffusing, appropriate subclasses for fluid spraying and discharging devices of general utility.
