An apparatus for cleaning vessels stacked on racks with a minimum of head clearance. The cleaning apparatus has a drive unit with a turbine wheel connected to a multi-stage gear train. The output motion of the gear train connects through an angular transmission within a fluid conveying elbow to a rotatable...http://www.google.de/patents/US7815748?utm_source=gb-gplus-sharePatent US7815748 - Apparatus for cleaning stacked vessels with low head clearance
