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
Disk-based storage device having read channel memory that is selectively accessible to disk controller
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Signal apparatus for facilitating safe backup of vehicles
Mesa-shaped piezoelectric resonator element
Methods, devices and software applications for facilitating a development of a computer program
Laser protection polymeric materials
  Randomly Featured Patents
Pattern matching for large vocabulary speech recognition systems
Self-priming liquid dispenser
Pinch-grip zipper
Rotation sensor
Adjustable tooling pin for a card test fixture
Television program transmission verification method and apparatus
Private label purchase card acceptance systems and methods
Enhancement of the efficacy of nifedipine by deuteration
Method of fabricating mounted multiple semiconductor dies in a package
Bi-porous Raney-nickel electrode