A waterslide bowl has a fixed rider path from entrance to exit. The bowl comprises a trough which is made of a plurality of sets of trough sections, attached together, in which the trough sections of a given set are the same and nest together side-by-side, permitting the rider surface of the bowl to...http://www.google.fr/patents/US8192291?utm_source=gb-gplus-shareBrevet US8192291 - Waterslide bowl with troughs
