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Method and apparatus for the cleaning of closed compartments

  • US 5,715,852 A
  • Filed: 09/30/1996
  • Issued: 02/10/1998
  • Est. Priority Date: 02/07/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for cleaning the inside surfaces of a tank comprising a nozzle lowered into the tank, a jet of fluid issuing from the nozzle for cleaning the inside surfaces of the tank, the nozzle being capable of being rotated around a first axis and being capable of being swivelled upward and downward in an oscillating movement around a second axis at right angles to the first axis in a predetermined manner, so that the jet of fluid is traversed around the first axis at the same time that the jet is moved upwards and downwards inside the tank, a turbine, driven by a stream of fluid, drive means connected to the turbine for rotating the nozzle, the drive means having a worm shaft, a worm wheel engaged with the worm shaft, a first stud provided on the worm wheel, a first pinion having a second stud thereon, a connecting link having a first link end in sliding engagement with the first stud on the worm wheel, a second link end in sliding engagement with the second stud on the first pinion such that rotation of the worm wheel moves the first pinion forwards and backwards, a rack having a first end and a second end, the first pinion being in engagement with the first end of the rack, a second pinion connected to the nozzle, the second end of the rack in engagement with the second pinion for effecting the swiveling upward and downward oscillating movement of the nozzle.

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