Rotating turbo nozzles for use in car wash systems have a nozzle body with a hollow interior in which a nozzle member is rotated in unison with a fluid vortex created by pressurized fluid introduced into the interior of the nozzle body through passageways forming an acute angle with the hollow interior....http://www.google.de/patents/US7467637?utm_source=gb-gplus-sharePatent US7467637 - Fluid emitting nozzles for use with vehicle wash apparatus
