Patent ID: 8011602

Claim:
A system for automatically providing a substantially rectangular fluid distribution pattern, wherein the system comprises: a regulatory insert, wherein: the regulatory insert comprises a fluid supply opening configured to receive a fluid supply; the regulatory insert defines at least one insert-aperture; and the regulatory insert is configured to provide the fluid supply from the fluid supply opening to the at least one insert-aperture; an oscillating tube, wherein: the oscillating tube rotates about the regulatory insert; and the oscillating tube defines a plurality of tube-apertures, wherein the plurality of tube-apertures comprises a first tube aperture, and wherein the first tube-aperture is configured to pass over at least one insert-aperture to vary the distance an amount of fluid passing through the first tube-aperture is projected from at least one of the plurality of tube-apertures; wherein the at least one insert-aperture is configured to: at either extreme of an oscillation period of the oscillating tube's rotation: allow a greater flow rate to tube-apertures at opposite ends of the oscillating tube than a flow rate to a tube-aperture in a mid-section of the oscillating tube; and at a central portion of the oscillation period of the oscillating tube's rotation: allow a lesser flow rate to tube-apertures at opposite ends of the oscillating tube than the flow rate to the tube-aperture in the mid-section of the oscillating tube.