Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Lateral hole boring method and apparatus










Image Number 12 for United States Patent #4691788.

A lateral hole boring method whereby a lateral hole of a desired length is formed underground by repeatedly performing the following steps. A vertical hole is prepared, and a lateral hole boring apparatus equipped with a leading auger of a smaller length than the diameter of the vertical hole is lowered into the vertical hole to a predetermined position. The apparatus is manipulated from the ground level to advance and rotate the leading auger to bore a lateral hole. When the lateral hole has reached a predetermined length commensurate with the length of the leading auger, the advance movement of the leading auger is stopped, and the lateral hole boring apparatus is manipulated from the ground level to detach the leading auger therefrom, and is lifted above the vertical hole while leaving the leading auger in the lateral hole. A coupling auger of a smaller length than the diameter of the vertical hole is attached to the lateral hole boring apparatus outside the vertical hole, and the apparatus is lowered into the vertical hole again. Then, the lateral hole boring apparatus is manipulated from the ground level to couple the coupling auger to the leading auger left behind in the lateral hole.








 
 
  Recently Added Patents
Image forming apparatus and method for making density correction in a low resolution image based on edge determination
System, method and program recording medium for supply capacity estimation
Die packages and systems having the die packages
Glow in the dark swim goggle frame and band
Multipoint photonic doppler velocimetry using optical lens elements
Decentralized processing network
Detecting patterns of abuse in a virtual environment
  Randomly Featured Patents
Crown pad and head-protective helmet
Object-dispensing wearing apparel
Method of laser CVD seal a die edge
Nickel catalyst
Designer's triangle
Desktop camera
Electric power steering device
Apparatus for electrostatic paint spraying
Identification mark comprising an optically and electronically readable marking
Semiconductor device having a flash memory cell and fabrication method thereof