A skimmer for an installation confining a pool of water through which surface water exits from the installation. The skimmer has a hollow dome with openings in the sides of the dome. The skimmer has a tray with a perforate floor extending under the base of the dome. Surface water cascades through the...http://www.google.es/patents/US5328602?utm_source=gb-gplus-sharePatente US5328602 - Water skimmer