Resources Contact Us Home
Hydraulic borehole mining system

Image Number 7 for United States Patent #4401345.

A hydraulic underground mining system for operating through a small diameter borehole into a subterranean body. An elongated mining tool includes a liquid jet nozzle that is movable in a vertical direction along the length of the mining tool for forming a directed jet stream to impact material in the ore body and convert the material into a slurry. An orifice is positioned below the jet so that slurry flows into the orifice, the latter being connected to a jet pump which returns generated slurry to the surface. Suitable hydraulic power means are provided for operating the jet pump and for moving the jet stream in vertical and circular directions. Means for monitoring and controlling the progress of mining and the condition of components of the system are provided to monitor and control the system from a centralized location.

  Recently Added Patents
Mobile communication device monitoring systems and methods
Acceleration based mode switch
Recombinant negative strand virus RNA expression systems and vaccines
Multiple RF band operation in mobile devices
Chip on film (COF) package having test line for testing electrical function of chip and method for manufacturing same
Curved structural part made of composite material and a process for manufacturing such a part
Semiconductor device
  Randomly Featured Patents
Rotary chemical treater having stationary cleaning fluid nozzle
Knock down element wall structure
Folded-cascode amplifier arrangement with cascode load means
Encased position measuring instrument
Conical seismic anchor and drill bit for use with unreinforced masonry structures
Continuous ink jet printer print head
Hermetically scaled picture frame
Method of making gate turn off switch with anode short and buried base
Compositions and methods for polishing
Angle head with improved accessibility