Patent ID: 7815748

Claim:
An apparatus for cleaning the interior of stacked vessels with low head clearance by discharging a cleaning fluid, the apparatus comprising: a. a drive unit oriented along a first axis and rotatable in response to passage of a cleaning fluid therethrough; b. a hollow drive tube connected at a first end for being rotated by the drive unit, the hollow drive tube formed for transmitting fluid; c. a compound elbow having a first fluid transmitting channel and a second fluid transmitting channel, the first and second channels being isolated from one another; d. angular drive transmission means mounted rotatably within the compound elbow and connected to a second end of the hollow drive tube for being rotated thereby, whereas the fluid flows through the angular drive transmission means; e. a hollow driven tube connected at a first end for being rotated by the angular transmission means, the hollow driven tube formed for transmitting fluid; f. wherein the drive tube and the driven tube are in fluid communication with the first fluid transmitting channel within the elbow; and g. a rotatable housing oriented along a second axis that is at an angle to the first axis, the rotatable housing being in drive communication with a second end of the driven tube.