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










Image Number 14 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
Light barrier and method for detecting objects
Method for specifying control curve parameters for controlling climatic environmental conditions of climate-controlled enclosed spaces
Automatic actuator for breakers or switches
Lamination sheet
Gemstone
Automatic logical position adjustment of multiple screens
Variety corn line LIC7382
  Randomly Featured Patents
Dispensers for bags, and bags for use therein
Plural component proportioner
Makeup mirror
Method and apparatus for initializing operation of a disk drive
Resonant frequency separation for an actuator assembly of a disc drive
Compass with LED illumination
Ink jet paper coatings containing amine functional monomer grafted poly(vinyl alcohol)
Dual control system for tailings outlet of primary separation vessel in the hot water process for bituminuous sands
Accelerometer
Advanced defrost system