Resources Contact Us Home
Earth boring system

Image Number 16 for United States Patent #7293615.

An earth boring apparatus for sinking shafts and removing shaft material from the shaft, the apparatus having at least two decks; hydraulic means for allowing movement of the decks relative to one another; releasable anchoring means associated with the decks for engaging walls of the shaft to secure the apparatus in a stationary position; whereby the releasable anchoring means of one of the decks engages the wall while the releasable anchoring means of the other deck is released from the wall to allow motion of the other deck along the shaft, in cooperation with the hydraulic means. The apparatus also includes guide means for forcing a bucket for hoisting shaft material from the shaft along a predetermined path, and an in-stage cut-boom drill.

  Recently Added Patents
Rendering a web page using content communicated to a browser application from a process running on a client
Wireless communication terminal
Fluorescence standard, and the use thereof
Network gateway for time-critical and mission-critical networks
Mutant RB69 DNA polymerase
Thread partitioning in a multi-core environment
Selective seed layer treatment for feature plating
  Randomly Featured Patents
Transmission parking brake
Vibratory container for flocculation of the waste water obtained upon vibratory abrasive finishing
Method of and apparatus for encoding/decoding digital signal using linear quantization by sections
Solar night splitter and event timer
Footwear sole
Spirometer for medical purposes
Energy absorber for motor vehicle steering column
Programmable bias-generator for self-biasing a delay locked loop
Removable externally mounted bridge crane for shipping containers
Portable kitchen cabinet