Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof
Preparation and its use of derivatization reagent for detecting L-carnitine or D-carnitine
Data output apparatus and data output method
Portable gaming device and gaming system combining both physical and virtual play elements
Apparatus and method of preventing signal delay in display device
Methods and systems for dynamic spectrum arbitrage
Documentation roadmaps and community networking for developers on large projects
  Randomly Featured Patents
Data storage device with an arrangement for receiving a transportable, card-shaped or disk-shaped data storage unit so that the data storage unit is inaccessible in an operating position
Centrifugal filter device
Discharge lamp operation apparatus
Anti-theft locking device for a vehicle steering wheel
Semi-automated cryostat
Infinitely variable positive mechanical transmissions
Domino-mahjong style connector
Method and apparatus for de-interlacing video
Printer for an electronic calculator
Toilet seat retainer