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
Code conversion apparatus, code conversion method, and computer product
Turbulence sensor and blade condition sensor system
Systems and methods for adaptive error thresholds or adaptive modulation schemes based on atmospheric conditions
Digital video disc player
Use of a high-oleic and high-tocol diet in combination with a non-tocol antioxidant for improving animal meat quality
High voltage fast recovery trench diode
Critical word forwarding with adaptive prediction
  Randomly Featured Patents
Padded protective grating for a truck rear window
Methods and systems of electronic message derivation
Process for making SnO
Method and apparatus for reading analog values stored in floating gate nand structures
Concrete foundation form screw and method of use
Mobile pre-etched data carrier and an optical tracking device using such a carrier
Method for statistics management
Bun for hamburgers or the like
Continuous plating method of filament bundle and apparatus therefor