Patent ID: 6655476
Filing Date: 2003-12-02
Classification: E21B

Abstract:
An earth boring bit for boring a hole having a predetermined depth into the earth, comprising:(a) a cylindrical drum for being mounted for rotation on the end of a boom of a mobile machine and connected to and rotated by a power supply mounted on the boom, said drum including an exterior for defining the diameter of the hole being bored and an interior adapted for receiving upturned earth therein as the hole is being bored; (b) a plate carried by said drum adjacent a lower end thereof for movement between a closed position for cooperating with the interior of the drum for retaining the upturned earth therein and an open position for dispensing the upturned earth out of the interior of the drum at a predetermined location away from the hole being bored; and (c) a cutting member carried on said plate for cutting the earth in a progressive slice and directing the earth into the drum, thereby boring the hole into the earth.