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
Non-intrusive processor tracing
Systems and methods for documenting medical findings of a physical examination
System and method for enhancing buyer and seller interaction during a group-buying sale
Coffee cup stationery tab
Image output method and device, and image display
Printing control method and printer for printing on a label
Active pulse blood constituent monitoring
  Randomly Featured Patents
Method for the cathodic prevention of reinforcement corrosion on damp and wet marine structures
Circuitry and method for selectively protecting the integrity of data stored within a range of addresses within a non-volatile semiconductor memory
Multivalent metal ion management for low sludge processes
Process for the production of esters
High-molecular, cross-linked polyvinyl butyrals, method for the production thereof and their use
Thin image sensor package
Method and apparatus for detecting liquid leaks
Stand alone swage apparatus
Photoelectric control device for gas burners
Voltage regulator circuit for a semiconductor memory device