US Patent 7861942 Sealed waterfall assembly

A waterfall assembly features a first, substantially hermetically sealed chamber adapted to contain a quantity of liquid. The first chamber includes at least one substantially vertical and transparent side having an internal surface, preferably with a plurality of protrusions. A pump or fluid transport device is in fluid communication with the first chamber and at least one nozzle/aperture disposed within the first chamber. The nozzle/aperture directs the liquid against at least a portion of the internal surface of the vertical side of the first chamber such that some of the liquid flows over the protrusions. A second chamber having a light source may be disposed beneath the first chamber for illuminating the first chamber.