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
Methods of forming semiconductor devices having diffusion regions of reduced width
Plants and seeds of corn variety CV092363
Stereoscopic editing for video production, post-production and display adaptation
Method and apparatus for internet on-line insurance policy service
Prioritizing application data for transmission in a wireless user device
Digital watermark embedding apparatus, digital watermark embedding method, and digital watermark detection apparatus
Communication system and time synchronization method
  Randomly Featured Patents
Selectively transforming a multi-dimensional array
Methods for forming self-aligned conductive pillars on interconnects
CFAR receiver apparatus for detecting a signal in noise
Recording medium
Piezoelectric element and method of manufacturing the same
Video card game machine
Interspinous spacer
Electrochemical gas sensor with passage for receiving gas
Dialing system
Automated activity detection using supervised learning