Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method and apparatus for communication channel error rate estimation
Transport of multiple asynchronous data streams using higher order modulation
Methods and compositions for improved F-18 labeling of proteins, peptides and other molecules
Switchable solvents and methods of use thereof
Connector interface for a cable
Display system with mounting assemblies and associated methods
SIC semiconductor device and method for manufacturing the same
  Randomly Featured Patents
Bi-directional transceiver circuit
Beta-stable low-saturate, low trans, all purpose shortening
Method and charge coupled apparatus for algorithmic computations
Metal borides, carbides, nitrides, silicides, oxide materials and their method of preparation
Support for grinding thread cutting tools
Trestle-type reel carrier
Method and apparatus for correcting signal skew differentials between two interconnected devices
Processing apparatus with a chamber having therein a high-corrosion-resistant sprayed film
Cradle unit for printhead cartridge having movable connectors
Storage device