Resources Contact Us Home
Water jet system for trenching of pipelines

Image Number 13 for United States Patent #5288172.

A water jet system for trenching of a cable or a pipe below the floor of a river, lake, gulf or ocean bottom. Two opposed water jet legs are carried on a carriage forward of venturi tubes for disposing of the trenched bottom. The carriage includes a hydraulically powered track system for advancing along the length of the cable or pipeline. The water jets are a plurality of nozzles mounted in a rotating tube at different angular directions. When the nozzle tube rotates within the housing and the nozzles pass by different openings at different heights, the jets' high pressure water shoot forth. The high pressure action of the streams of water loosen the sediment below the floor of the body of water, which is subsequently carried away by air or water action through venturi tubes which are positioned behind the jet legs. The jet legs and carriage are positioned, controlled and powered from a work vessel on the surface of the water.

  Recently Added Patents
Semiconductor assembly and semiconductor package including a solder channel
Semiconductor memory device
Case for electronic device
System and method for multi-threaded MIMO OFDM channel equalizer
Mold for nanoimprinting, its production process, and processes for producing molded resin having fine concavo-convex structure on its surface and wire-grid polarizer
Canine iPS cells and method of producing same
Metal colloidal particles, metal colloid and use of metal colloid
  Randomly Featured Patents
Ultraviolet absorbing polymers comprising 2-hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles
Telephone switching circuit
Method of and apparatus for transferring extruded metal wire rings in protective tubs
MRI magnet system with vessel having composite first wall
Method and device for counting transmission times of data unit, transmission device, and computer program
Thiosulfate generation in situ in precious metal recovery
System for generating preview image data based on color components which have been entered frame-sequentially or in parallel
System for reconstructing prior versions of indexes using records indicating changes between successive versions of the indexes
Fully differential flash A/D converter