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
Shipping container explosives and contraband detection system using nuclear quadrupole resonance
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
Packet transmission system and fault recovery method
Biodegradable aliphatic-aromatic copolyester for use in nonwoven webs
Quantitative oxygen imaging systems and methods using echo-based single point imaging
Broadband optical network apparatus and method
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
  Randomly Featured Patents
Automatic power transmission of automotive vehicle
Heated roller for control of soil-borne pests such as nematodes, pathogens, fungus, and weeds
Vehicle driveline differential with improved efficiency during vehicle cold starts
Method for reducing cross-talk induced source synchronous bus clock jitter
Method for supporting the design of semiconductor integrated circuit and system using the same method
Accumulator having rotary drive
Coleopteran-resistant transgenic plants and methods of their production
Apparatus for measuring wheel rim displacements
Processes for the production of hydrogenated products
Obtaining or sending information to a device on a network by a client apparatus